Version 3.34.1

FossilOrigin-Name: 10e20c0b43500cfb9bbc0eaa061c57514f715d87238f4d835880cd846b9ebd1f
Fix an issue with sha3_query() when the first argument contains blank
2021-01-20 14:10:07 +00:00 · 2021-01-19 20:38:13 +00:00 · 2021-01-19 20:17:46 +00:00 · 2021-01-19 20:09:44 +00:00 · 2021-01-19 20:04:37 +00:00 · 2020-12-16 13:20:15 +00:00
569 changed files with 12906 additions and 104388 deletions
@@ -165,7 +165,6 @@ LTINSTALL = $(LIBTOOL) --mode=install $(INSTALL)
 ###############################################################################

 USE_AMALGAMATION = @USE_AMALGAMATION@
-AMALGAMATION_LINE_MACROS = @AMALGAMATION_LINE_MACROS@

 # Object files for the SQLite library (non-amalgamation).
 #
@@ -180,7 +179,7 @@ LIBOBJS0 = alter.lo analyze.lo attach.lo auth.lo \
         fts3_unicode.lo fts3_unicode2.lo fts3_write.lo \
 	 fts5.lo \
         func.lo global.lo hash.lo \
-         icu.lo insert.lo json.lo legacy.lo loadext.lo \
+         icu.lo insert.lo json1.lo legacy.lo loadext.lo \
         main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \
         memdb.lo memjournal.lo \
         mutex.lo mutex_noop.lo mutex_unix.lo mutex_w32.lo \
@@ -234,7 +233,6 @@ SRC = \
  $(TOP)/src/hash.h \
  $(TOP)/src/hwtime.h \
  $(TOP)/src/insert.c \
-  $(TOP)/src/json.c \
  $(TOP)/src/legacy.c \
  $(TOP)/src/loadext.c \
  $(TOP)/src/main.c \
@@ -367,6 +365,7 @@ SRC += \
  $(TOP)/ext/rbu/sqlite3rbu.h \
  $(TOP)/ext/rbu/sqlite3rbu.c
 SRC += \
+  $(TOP)/ext/misc/json1.c \
  $(TOP)/ext/misc/stmt.c

 # Generated source code files
@@ -433,7 +432,7 @@ TESTSRC = \
  $(TOP)/ext/fts3/fts3_term.c \
  $(TOP)/ext/fts3/fts3_test.c  \
  $(TOP)/ext/session/test_session.c \
-  $(TOP)/ext/rbu/test_rbu.c 
+  $(TOP)/ext/rbu/test_rbu.c

 # Statically linked extensions
 #
@@ -441,7 +440,6 @@ TESTSRC += \
  $(TOP)/ext/expert/sqlite3expert.c \
  $(TOP)/ext/expert/test_expert.c \
  $(TOP)/ext/misc/amatch.c \
-  $(TOP)/ext/misc/appendvfs.c \
  $(TOP)/ext/misc/carray.c \
  $(TOP)/ext/misc/cksumvfs.c \
  $(TOP)/ext/misc/closure.c \
@@ -460,7 +458,6 @@ TESTSRC += \
  $(TOP)/ext/misc/normalize.c \
  $(TOP)/ext/misc/percentile.c \
  $(TOP)/ext/misc/prefixes.c \
-  $(TOP)/ext/misc/qpvtab.c \
  $(TOP)/ext/misc/regexp.c \
  $(TOP)/ext/misc/remember.c \
  $(TOP)/ext/misc/series.c \
@@ -469,8 +466,7 @@ TESTSRC += \
  $(TOP)/ext/misc/unionvtab.c \
  $(TOP)/ext/misc/wholenumber.c \
  $(TOP)/ext/misc/zipfile.c \
-  $(TOP)/ext/userauth/userauth.c \
-  $(TOP)/ext/rtree/test_rtreedoc.c
+  $(TOP)/ext/userauth/userauth.c

 # Source code to the library files needed by the test fixture
 #
@@ -524,8 +520,7 @@ TESTSRC2 = \
  $(TOP)/ext/fts3/fts3_write.c \
  $(TOP)/ext/async/sqlite3async.c \
  $(TOP)/ext/session/sqlite3session.c \
-  $(TOP)/ext/misc/stmt.c \
-  fts5.c
+  $(TOP)/ext/misc/stmt.c

 # Header files used by all library source files.
 #
@@ -609,7 +604,7 @@ TESTOPTS = --verbose=file --output=test-out.txt

 # Extra compiler options for various shell tools
 #
-SHELL_OPT = -DSQLITE_ENABLE_FTS4
+SHELL_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_FTS4
 #SHELL_OPT += -DSQLITE_ENABLE_FTS5
 SHELL_OPT += -DSQLITE_ENABLE_RTREE
 SHELL_OPT += -DSQLITE_ENABLE_EXPLAIN_COMMENTS
@@ -619,18 +614,20 @@ SHELL_OPT += -DSQLITE_ENABLE_DBPAGE_VTAB
 SHELL_OPT += -DSQLITE_ENABLE_DBSTAT_VTAB
 SHELL_OPT += -DSQLITE_ENABLE_BYTECODE_VTAB
 SHELL_OPT += -DSQLITE_ENABLE_OFFSET_SQL_FUNC
-FUZZERSHELL_OPT = 
-FUZZCHECK_OPT = -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_OSS_FUZZ
+SHELL_OPT += -DSQLITE_ENABLE_DESERIALIZE
+FUZZERSHELL_OPT = -DSQLITE_ENABLE_JSON1
+FUZZCHECK_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_OSS_FUZZ
 FUZZCHECK_OPT += -DSQLITE_MAX_MEMORY=50000000
 FUZZCHECK_OPT += -DSQLITE_PRINTF_PRECISION_LIMIT=1000
+FUZZCHECK_OPT += -DSQLITE_ENABLE_DESERIALIZE
 FUZZCHECK_OPT += -DSQLITE_ENABLE_FTS4
 FUZZCHECK_OPT += -DSQLITE_ENABLE_FTS3_PARENTHESIS
-FUZZCHECK_OPT += -DSQLITE_ENABLE_FTS5
+#FUZZCHECK_OPT += -DSQLITE_ENABLE_FTS5
 FUZZCHECK_OPT += -DSQLITE_ENABLE_RTREE
 FUZZCHECK_OPT += -DSQLITE_ENABLE_GEOPOLY
 FUZZCHECK_OPT += -DSQLITE_ENABLE_DBSTAT_VTAB
 FUZZCHECK_OPT += -DSQLITE_ENABLE_BYTECODE_VTAB
-FUZZCHECK_SRC = $(TOP)/test/fuzzcheck.c $(TOP)/test/ossfuzz.c $(TOP)/test/fuzzinvariants.c
+FUZZCHECK_SRC = $(TOP)/test/fuzzcheck.c $(TOP)/test/ossfuzz.c
 DBFUZZ_OPT =

 # This is the default Makefile target.  The objects listed here
@@ -696,6 +693,7 @@ dbfuzz$(TEXE):	$(TOP)/test/dbfuzz.c sqlite3.c sqlite3.h
 DBFUZZ2_OPTS = \
  -DSQLITE_THREADSAFE=0 \
  -DSQLITE_OMIT_LOAD_EXTENSION \
+  -DSQLITE_ENABLE_DESERIALIZE \
  -DSQLITE_DEBUG \
  -DSQLITE_ENABLE_DBSTAT_VTAB \
  -DSQLITE_ENABLE_BYTECODE_VTAB \
@@ -759,7 +757,7 @@ mptest:	mptester$(TEXE)
 	touch .target_source

 sqlite3.c:	.target_source $(TOP)/tool/mksqlite3c.tcl
-	$(TCLSH_CMD) $(TOP)/tool/mksqlite3c.tcl $(AMALGAMATION_LINE_MACROS)
+	$(TCLSH_CMD) $(TOP)/tool/mksqlite3c.tcl
 	cp tsrc/sqlite3ext.h .
 	cp $(TOP)/ext/session/sqlite3session.h .

@@ -874,9 +872,6 @@ hash.lo:	$(TOP)/src/hash.c $(HDR)
 insert.lo:	$(TOP)/src/insert.c $(HDR)
 	$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/insert.c

-json.lo:	$(TOP)/src/json.c
-	$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/json.c
-
 legacy.lo:	$(TOP)/src/legacy.c $(HDR)
 	$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/legacy.c

@@ -1092,7 +1087,6 @@ SHELL_SRC = \
        $(TOP)/ext/misc/decimal.c \
 	$(TOP)/ext/misc/fileio.c \
        $(TOP)/ext/misc/ieee754.c \
-        $(TOP)/ext/misc/regexp.c \
        $(TOP)/ext/misc/series.c \
 	$(TOP)/ext/misc/shathree.c \
 	$(TOP)/ext/misc/sqlar.c \
@@ -1180,6 +1174,9 @@ userauth.lo:	$(TOP)/ext/userauth/userauth.c $(HDR) $(EXTHDR)
 sqlite3session.lo:	$(TOP)/ext/session/sqlite3session.c $(HDR) $(EXTHDR)
 	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/session/sqlite3session.c

+json1.lo:	$(TOP)/ext/misc/json1.c
+	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/misc/json1.c
+
 stmt.lo:	$(TOP)/ext/misc/stmt.c
 	$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/misc/stmt.c

@@ -1236,6 +1233,7 @@ TESTFIXTURE_FLAGS += -DSQLITE_DEFAULT_PAGE_SIZE=1024
 TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_STMTVTAB
 TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_DBPAGE_VTAB
 TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_BYTECODE_VTAB
+TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_DESERIALIZE
 TESTFIXTURE_FLAGS += -DSQLITE_CKSUMVFS_STATIC

 TESTFIXTURE_SRC0 = $(TESTSRC2) libsqlite3.la
@@ -1252,10 +1250,7 @@ coretestprogs:	$(TESTPROGS)
 testprogs:	coretestprogs srcck1$(BEXE) fuzzcheck$(TEXE) sessionfuzz$(TEXE)

 # A very detailed test running most or all test cases
-fulltest:	alltest fuzztest
-
-# Run most or all tcl test cases
-alltest:	$(TESTPROGS)
+fulltest:	$(TESTPROGS) fuzztest
 	./testfixture$(TEXE) $(TOP)/test/all.test $(TESTOPTS)

 # Really really long testing
@@ -1272,7 +1267,7 @@ fuzztest:	fuzzcheck$(TEXE) $(FUZZDATA) sessionfuzz$(TEXE) $(TOP)/test/sessionfuz
 	./sessionfuzz$(TEXE) run $(TOP)/test/sessionfuzz-data1.db

 valgrindfuzz:	fuzzcheck$(TEXT) $(FUZZDATA) sessionfuzz$(TEXE) $(TOP)/test/sessionfuzz-data1.db
-	valgrind ./fuzzcheck$(TEXE) --cell-size-check --limit-mem 10M $(FUZZDATA)
+	valgrind ./fuzzcheck$(TEXE) --cell-size-check --limit-mem 10M --timeout 600 $(FUZZDATA)
 	valgrind ./sessionfuzz$(TEXE) run $(TOP)/test/sessionfuzz-data1.db

 # The veryquick.test TCL tests.
@@ -1383,9 +1378,6 @@ wordcount$(TEXE):	$(TOP)/test/wordcount.c sqlite3.lo
 speedtest1$(TEXE):	$(TOP)/test/speedtest1.c sqlite3.c
 	$(LTLINK) $(ST_OPT) -o $@ $(TOP)/test/speedtest1.c sqlite3.c $(TLIBS)

-startup$(TEXE):	$(TOP)/test/startup.c sqlite3.c
-	$(CC) -Os -g -DSQLITE_THREADSAFE=0 -o $@ $(TOP)/test/startup.c sqlite3.c $(TLIBS)
-
 KV_OPT += -DSQLITE_DIRECT_OVERFLOW_READ

 kvtest$(TEXE):	$(TOP)/test/kvtest.c sqlite3.c
@@ -1434,9 +1426,6 @@ threadtest3$(TEXE): sqlite3.lo $(THREADTEST3_SRC)
 threadtest: threadtest3$(TEXE)
 	./threadtest3$(TEXE)

-threadtest5: sqlite3.c $(TOP)/test/threadtest5.c
-	$(LTLINK) $(TOP)/test/threadtest5.c sqlite3.c -o $@ $(TLIBS)
-
 releasetest:
 	$(TCLSH_CMD) $(TOP)/test/releasetest.tcl

@@ -1490,7 +1479,6 @@ clean:
 	rm -f sqldiff sqldiff.exe
 	rm -f dbhash dbhash.exe
 	rm -f fts5.* fts5parse.*
-	rm -f threadtest5

 distclean:	clean
 	rm -f config.h config.log config.status libtool Makefile sqlite3.pc
@@ -1512,134 +1500,3 @@ sqlite3.def: $(REAL_LIBOBJ)
 sqlite3.dll: $(REAL_LIBOBJ) sqlite3.def
 	$(TCC) -shared -o $@ sqlite3.def \
 		-Wl,"--strip-all" $(REAL_LIBOBJ)
-
-
-#
-# fiddle/wasm section
-#
-fiddle_dir = ext/fiddle
-fiddle_dir_abs = $(TOP)/$(fiddle_dir)
-# ^^^ some emcc opts require absolute paths
-fiddle_html = $(fiddle_dir)/fiddle.html
-fiddle_module_js = $(fiddle_dir)/fiddle-module.js
-sqlite3_wasm_js = $(fiddle_dir)/sqlite3.js
-sqlite3_wasm = $(fiddle_dir)/sqlite3.wasm
-#emcc_opt = -O0
-#emcc_opt = -O1
-#emcc_opt = -O2
-#emcc_opt = -O3
-emcc_opt = -Oz
-emcc_flags = $(emcc_opt) -sALLOW_TABLE_GROWTH -sSTRICT_JS \
-        -sENVIRONMENT=web -sMODULARIZE \
-        -sEXPORTED_RUNTIME_METHODS=@$(fiddle_dir_abs)/EXPORTED_RUNTIME_METHODS \
-        -sDYNAMIC_EXECUTION=0 \
-        -I. $(SHELL_OPT)
-$(fiddle_module_js): Makefile sqlite3.c shell.c \
-    $(fiddle_dir)/EXPORTED_RUNTIME_METHODS \
-    $(fiddle_dir)/EXPORTED_FUNCTIONS.fiddle
-	emcc -o $@ $(emcc_flags) \
-        -sEXPORT_NAME=initFiddleModule \
-        -sEXPORTED_FUNCTIONS=@$(fiddle_dir_abs)/EXPORTED_FUNCTIONS.fiddle \
-        sqlite3.c shell.c
-	gzip < $@ > $@.gz
-	gzip < $(fiddle_dir)/fiddle-module.wasm > $(fiddle_dir)/fiddle-module.wasm.gz
-$(sqlite3_wasm_js): Makefile sqlite3.c \
-    $(fiddle_dir)/sqlite3-api.js \
-    $(fiddle_dir)/EXPORTED_RUNTIME_METHODS \
-    $(fiddle_dir)/EXPORTED_FUNCTIONS.sqlite3-api
-	emcc -o $@ $(emcc_flags) \
-        -sEXPORT_NAME=initSqlite3Module \
-        -sEXPORTED_FUNCTIONS=@$(fiddle_dir_abs)/EXPORTED_FUNCTIONS.sqlite3-api \
-        --post-js=$(fiddle_dir)/sqlite3-api.js \
-        --no-entry \
-        sqlite3.c
-	gzip < $@ > $@.gz
-	gzip < $(sqlite3_wasm) > $(sqlite3_wasm).gz
-	gzip < $(fiddle_dir)/sqlite3-api.js > $(fiddle_dir)/sqlite3-api.js.gz
-$(fiddle_dir)/fiddle.js.gz: $(fiddle_dir)/fiddle.js
-	gzip < $< > $@
-$(fiddle_dir)/sqlite3-api.js.gz: $(fiddle_dir)/sqlite3-api.js
-	gzip < $< > $@
-
-fiddle_generated = $(fiddle_module_js) $(fiddle_module_js).gz \
-                   $(fiddle_dir)/fiddle-module.wasm \
-                   $(fiddle_dir)/fiddle-module.wasm.gz \
-                   $(fiddle_dir)/fiddle.js.gz
-sqlite3_wasm_generated = \
-                   $(sqlite3_wasm) $(sqlite3_wasm).gz \
-                   $(sqlite3_wasm_js) $(sqlite3_wasm_js).gz \
-                   $(fiddle_dir)/sqlite3.js.gz \
-                   $(fiddle_dir)/sqlite3-api.js.gz
-
-clean-wasm:
-	rm -f $(fiddle_generated) $(sqlite3_wasm_generated)
-clean: clean-wasm
-fiddle: $(fiddle_module_js) $(fiddle_dir)/fiddle.js.gz
-sqlite3-wasm: $(sqlite3_wasm_js)
-wasm: fiddle sqlite3-wasm
-########################################################################
-# Explanation of the emcc build flags follows. Full docs for these can
-# be found at:
-#
-#  https://github.com/emscripten-core/emscripten/blob/main/src/settings.js
-#
-# -sENVIRONMENT=web: elides bootstrap code related to non-web JS
-#  environments like node.js. Removing this makes the output a tiny
-#  tick larger but hypothetically makes it more portable to
-#  non-browser JS environments.
-#
-# -sMODULARIZE: changes how the generated code is structured to avoid
-#  declaring a global Module object and instead installing a function
-#  which loads and initialized the module. The function is named...
-#
-# -sEXPORT_NAME=jsFunctionName (see -sMODULARIZE)
-#
-# -sEXPORTED_RUNTIME_METHODS=@/absolute/path/to/file: a file
-#  containing a list of emscripten-supplied APIs, one per line, which
-#  must be exported into the generated JS. Must be an absolute path!
-#
-# -sEXPORTED_FUNCTIONS=@/absolute/path/to/file: a file containing a
-#  list of C functions, one per line, which must be exported via wasm
-#  so they're visible to JS. C symbols names in that file must all
-#  start with an underscore for reasons known only to the emcc
-#  developers. e.g., _sqlite3_open_v2 and _sqlite3_finalize. Must be
-#  an absolute path!
-#
-# -sSTRICT_JS ensures that the emitted JS code includes the 'use
-#  strict' option. Note that -sSTRICT is more broadly-scoped and
-#  results in build errors.
-#
-# -sALLOW_TABLE_GROWTH is required for (at a minimum) the UDF-binding
-#  feature.
-#
-# -sDYNAMIC_EXECUTION=0 disables eval() and the Function constructor.
-#  If the build runs without these, it's preferable to use this flag
-#  because certain execution environments disallow those constructs.
-#  This flag is not strictly necessary, however.
-#
-# -sWASM_BIGINT is UNTESTED but "should" allow the int64-using C APIs
-#  to work with JS/wasm, insofar as the JS environment supports the
-#  BigInt type. That support requires an extremely recent browser:
-#  Safari didn't get that support until late 2020.
-#
-# --no-entry: for compiling library code with no main(). If this is
-#  not supplied and the code has a main(), it is called as part of the
-#  module init process. Note that main() is #if'd out of shell.c
-#  (renamed) when building in wasm mode.
-#
-# --pre-js/--post-js=FILE relative or absolute paths to JS files to
-#  prepend/append to the emcc-generated bootstrapping JS. It's
-#  easier/faster to develop with separate JS files (reduces rebuilding
-#  requirements) but certain configurations, namely -sMODULARIZE, may
-#  require using at least a --pre-js file. They can be used
-#  individually and need not be paired.
-#
-# -O0..-O3 and -Oz: optimization levels affect not only C-style
-#  optimization but whether or not the resulting generated JS code
-#  gets minified. -O0 compiles _much_ more quickly than -O3 or -Oz,
-#  and doesn't minimize any JS code, so is recommended for
-#  development. -O3 or -Oz are recommended for deployment, but
-#  primarily because -Oz will shrink the wasm file notably. JS-side
-#  minification makes little difference in terms of overall
-#  distributable size.
-########################################################################
@@ -235,9 +235,8 @@ DEBUG = 0
 !ENDIF

 # <<mark>>
-# By default, use --linemacros=1 argument to the mksqlite3c.tcl tool, which
-# is used to build the amalgamation. This can be turned off to ease debug
-# of the amalgamation away from the source tree.
+# Disable use of the --linemacros argument to the mksqlite3c.tcl tool, which
+# is used to build the amalgamation.
 #
 !IFNDEF NO_LINEMACROS
 NO_LINEMACROS = 0
@@ -363,10 +362,12 @@ SQLITE_TCL_DEP =
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_FTS3=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_RTREE=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_GEOPOLY=1
+OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_JSON1=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_STMTVTAB=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DBPAGE_VTAB=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DBSTAT_VTAB=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_BYTECODE_VTAB=1
+OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DESERIALIZE=1
 !ENDIF
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
 !ENDIF
@@ -379,9 +380,6 @@ OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_SESSION=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_PREUPDATE_HOOK=1
 !ENDIF

-# Always enable math functions on Windows
-OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_MATH_FUNCTIONS
-
 # Should the rbu extension be enabled?  If so, add compilation options
 # to enable it.
 #
@@ -579,17 +577,17 @@ RCC = $(RC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) -I$(TOP)\src $(RCOPTS) $(RCCOPTS)
 #
 !IF $(USE_STDCALL)!=0 || $(FOR_WIN10)!=0
 !IF "$(PLATFORM)"=="x86"
-CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
-SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
 # <<mark>>
-TEST_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
+TEST_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
 # <</mark>>
 !ELSE
 !IFNDEF PLATFORM
-CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
-SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
 # <<mark>>
-TEST_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
+TEST_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
 # <</mark>>
 !ELSE
 CORE_CCONV_OPTS =
@@ -788,9 +786,9 @@ MKSQLITE3C_TOOL = $(TOP)\tool\mksqlite3c.tcl

 !IFNDEF MKSQLITE3C_ARGS
 !IF $(DEBUG)>1 && $(NO_LINEMACROS)==0
-MKSQLITE3C_ARGS = --linemacros=1
+MKSQLITE3C_ARGS = --linemacros
 !ELSE
-MKSQLITE3C_ARGS = --linemacros=0
+MKSQLITE3C_ARGS =
 !ENDIF
 !IF $(USE_STDCALL)!=0 || $(FOR_WIN10)!=0
 MKSQLITE3C_ARGS = $(MKSQLITE3C_ARGS) --useapicall
@@ -1247,7 +1245,7 @@ LIBOBJS0 = vdbe.lo parse.lo alter.lo analyze.lo attach.lo auth.lo \
         fts3_tokenize_vtab.lo fts3_unicode.lo fts3_unicode2.lo fts3_write.lo \
         fts5.lo \
         func.lo global.lo hash.lo \
-         icu.lo insert.lo json.lo legacy.lo loadext.lo \
+         icu.lo insert.lo json1.lo legacy.lo loadext.lo \
         main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \
         memdb.lo memjournal.lo \
         mutex.lo mutex_noop.lo mutex_unix.lo mutex_w32.lo \
@@ -1314,7 +1312,6 @@ SRC00 = \
  $(TOP)\src\global.c \
  $(TOP)\src\hash.c \
  $(TOP)\src\insert.c \
-  $(TOP)\src\json.c \
  $(TOP)\src\legacy.c \
  $(TOP)\src\loadext.c \
  $(TOP)\src\main.c \
@@ -1445,6 +1442,7 @@ SRC07 = \
  $(TOP)\ext\rtree\rtree.c \
  $(TOP)\ext\session\sqlite3session.c \
  $(TOP)\ext\rbu\sqlite3rbu.c \
+  $(TOP)\ext\misc\json1.c \
  $(TOP)\ext\misc\stmt.c

 # Extension header files, part 1.
@@ -1551,7 +1549,7 @@ TESTSRC = \
  $(TOP)\ext\fts3\fts3_term.c \
  $(TOP)\ext\fts3\fts3_test.c \
  $(TOP)\ext\rbu\test_rbu.c \
-  $(TOP)\ext\session\test_session.c 
+  $(TOP)\ext\session\test_session.c

 # Statically linked extensions.
 #
@@ -1559,7 +1557,6 @@ TESTEXT = \
  $(TOP)\ext\expert\sqlite3expert.c \
  $(TOP)\ext\expert\test_expert.c \
  $(TOP)\ext\misc\amatch.c \
-  $(TOP)\ext\misc\appendvfs.c \
  $(TOP)\ext\misc\carray.c \
  $(TOP)\ext\misc\cksumvfs.c \
  $(TOP)\ext\misc\closure.c \
@@ -1578,16 +1575,13 @@ TESTEXT = \
  $(TOP)\ext\misc\normalize.c \
  $(TOP)\ext\misc\percentile.c \
  $(TOP)\ext\misc\prefixes.c \
-  $(TOP)\ext\misc\qpvtab.c \
  $(TOP)\ext\misc\regexp.c \
  $(TOP)\ext\misc\remember.c \
  $(TOP)\ext\misc\series.c \
  $(TOP)\ext\misc\spellfix.c \
  $(TOP)\ext\misc\totype.c \
  $(TOP)\ext\misc\unionvtab.c \
-  $(TOP)\ext\misc\wholenumber.c \
-  $(TOP)\ext\rtree\test_rtreedoc.c \
-  fts5.c
+  $(TOP)\ext\misc\wholenumber.c

 # If use of zlib is enabled, add the "zipfile.c" source file.
 #
@@ -1690,22 +1684,23 @@ FUZZDATA = \
 SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_FTS4=1
 SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_EXPLAIN_COMMENTS=1
 SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_OFFSET_SQL_FUNC=1
+SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_DESERIALIZE=1
 !ENDIF

 # <<mark>>
 # Extra compiler options for various test tools.
 #
-MPTESTER_COMPILE_OPTS = -DSQLITE_ENABLE_FTS5
-FUZZERSHELL_COMPILE_OPTS =
-FUZZCHECK_OPTS = -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_OSS_FUZZ -DSQLITE_MAX_MEMORY=50000000 -DSQLITE_PRINTF_PRECISION_LIMIT=1000
+MPTESTER_COMPILE_OPTS = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_FTS5
+FUZZERSHELL_COMPILE_OPTS = -DSQLITE_ENABLE_JSON1
+FUZZCHECK_OPTS = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_OSS_FUZZ -DSQLITE_MAX_MEMORY=50000000 -DSQLITE_PRINTF_PRECISION_LIMIT=1000
+FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_DESERIALIZE
 FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_FTS4
-FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_FTS5
 FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_RTREE
 FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_GEOPOLY
 FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_DBSTAT_VTAB
 FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_BYTECODE_VTAB

-FUZZCHECK_SRC = $(TOP)\test\fuzzcheck.c $(TOP)\test\ossfuzz.c $(TOP)\test\fuzzinvariants.c
+FUZZCHECK_SRC = $(TOP)\test\fuzzcheck.c $(TOP)\test\ossfuzz.c
 OSSSHELL_SRC = $(TOP)\test\ossshell.c $(TOP)\test\ossfuzz.c
 DBFUZZ_COMPILE_OPTS = -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION
 KV_COMPILE_OPTS = -DSQLITE_THREADSAFE=0 -DSQLITE_DIRECT_OVERFLOW_READ
@@ -1990,9 +1985,6 @@ hash.lo:	$(TOP)\src\hash.c $(HDR)
 insert.lo:	$(TOP)\src\insert.c $(HDR)
 	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\insert.c

-json.lo:	$(TOP)\src\json.c $(HDR)
-	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\json.c
-
 legacy.lo:	$(TOP)\src\legacy.c $(HDR)
 	$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\legacy.c

@@ -2214,11 +2206,10 @@ SHELL_SRC = \
 	$(TOP)\src\shell.c.in \
 	$(TOP)\ext\misc\appendvfs.c \
 	$(TOP)\ext\misc\completion.c \
-	$(TOP)\ext\misc\decimal.c \
+        $(TOP)\ext\misc\decimal.c \
 	$(TOP)\ext\misc\fileio.c \
-	$(TOP)\ext\misc\ieee754.c \
-	$(TOP)\ext\misc\regexp.c \
-	$(TOP)\ext\misc\series.c \
+        $(TOP)\ext\misc\ieee754.c \
+        $(TOP)\ext\misc\series.c \
 	$(TOP)\ext\misc\shathree.c \
 	$(TOP)\ext\misc\uint.c \
 	$(TOP)\ext\expert\sqlite3expert.c \
@@ -2301,6 +2292,9 @@ fts3_unicode2.lo:	$(TOP)\ext\fts3\fts3_unicode2.c $(HDR) $(EXTHDR)
 fts3_write.lo:	$(TOP)\ext\fts3\fts3_write.c $(HDR) $(EXTHDR)
 	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_write.c

+json1.lo:	$(TOP)\ext\misc\json1.c $(HDR) $(EXTHDR)
+	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\misc\json1.c
+
 stmt.lo:	$(TOP)\ext\misc\stmt.c $(HDR) $(EXTHDR)
 	$(LTCOMPILE) $(CORE_COMPILE_OPTS) $(NO_WARN) -DSQLITE_CORE -c $(TOP)\ext\misc\stmt.c

@@ -2392,6 +2386,8 @@ TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_DEFAULT_PAGE_SIZE=1024
 TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_STMTVTAB=1
 TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_DBPAGE_VTAB=1
 TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_BYTECODE_VTAB=1
+TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_JSON1=1
+TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_DESERIALIZE=1
 TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_CKSUMVFS_STATIC=1
 TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) $(TEST_CCONV_OPTS)

@@ -2437,9 +2433,7 @@ coretestprogs:	$(TESTPROGS)

 testprogs:	coretestprogs srcck1.exe fuzzcheck.exe sessionfuzz.exe

-fulltest:	alltest fuzztest
-
-alltest:	$(TESTPROGS)
+fulltest:	$(TESTPROGS) fuzztest
 	@set PATH=$(LIBTCLPATH);$(PATH)
 	.\testfixture.exe $(TOP)\test\all.test $(TESTOPTS)

@@ -2467,11 +2461,7 @@ quicktest:	testfixture.exe sourcetest
 # This is the common case.  Run many tests that do not take too long,
 # including fuzzcheck, sqlite3_analyzer, and sqldiff tests.
 #
-test:	$(TESTPROGS) sourcetest fuzztest tcltest
-
-# The veryquick.test TCL tests.
-#
-tcltest: testfixture.exe
+test:	$(TESTPROGS) sourcetest fuzztest
 	@set PATH=$(LIBTCLPATH);$(PATH)
 	.\testfixture.exe $(TOP)\test\veryquick.test $(TESTOPTS)

@@ -2593,17 +2583,6 @@ rbu.exe:	$(TOP)\ext\rbu\rbu.c $(TOP)\ext\rbu\sqlite3rbu.c $(SQLITE3C) $(SQLITE3H
 	$(LTLINK) $(NO_WARN) -DSQLITE_ENABLE_RBU \
 		$(TOP)\ext\rbu\rbu.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

-THREADTEST3_SRC = \
-  $(TOP)\test\threadtest3.c \
-  $(TOP)\test\tt3_checkpoint.c \
-  $(TOP)\test\tt3_index.c \
-  $(TOP)\test\tt3_vacuum.c \
-  $(TOP)\test\tt3_stress.c \
-  $(TOP)\test\tt3_lookaside1.c
-
-threadtest3.exe: $(THREADTEST3_SRC) $(TOP)\src\test_multiplex.c $(SQLITE3C) $(SQLITE3H)
-	$(LTLINK) $(NO_WARN) $(TOP)\test\threadtest3.c $(TOP)\src\test_multiplex.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)
-
 LSMDIR=$(TOP)\ext\lsm1
 !INCLUDE $(LSMDIR)\Makefile.msc

@@ -2641,7 +2620,7 @@ clean:
 	del /Q sqlite-*-output.vsix 2>NUL
 	del /Q fuzzershell.exe fuzzcheck.exe sqldiff.exe dbhash.exe 2>NUL
 	del /Q sqltclsh.* 2>NUL
-	del /Q dbfuzz.exe sessionfuzz.exe threadtest3.exe 2>NUL
+	del /Q dbfuzz.exe sessionfuzz.exe 2>NUL
 	del /Q kvtest.exe ossshell.exe scrub.exe 2>NUL
 	del /Q showshm.exe sqlite3_checker.* sqlite3_expert.exe 2>NUL
 	del /Q fts5.* fts5parse.* 2>NUL
@@ -1,7 +1,7 @@
 <h1 align="center">SQLite Source Repository</h1>

-This repository contains the complete source code for the
-[SQLite database engine](https://sqlite.org/).  Some test scripts
+This repository contains the complete source code for the 
+[SQLite database engine](https://sqlite.org/).  Some test scripts 
 are also included.  However, many other test scripts
 and most of the documentation are managed separately.

@@ -15,7 +15,7 @@ The [Fossil repository](https://sqlite.org/src/timeline) contains the urtext.
 If you are reading this on GitHub or some other Git repository or service,
 then you are looking at a mirror.  The names of check-ins and
 other artifacts in a Git mirror are different from the official
-names for those objects.  The official names for check-ins are
+names for those objects.  The offical names for check-ins are
 found in a footer on the check-in comment for authorized mirrors.
 The official check-in name can also be seen in the `manifest.uuid` file
 in the root of the tree.  Always use the official name, not  the
@@ -30,7 +30,7 @@ verify its integrity, there are hints on how to do that in the
 If you do not want to use Fossil, you can download tarballs or ZIP
 archives or [SQLite archives](https://sqlite.org/cli.html#sqlar) as follows:

-  *  Latest trunk check-in as
+  *  Lastest trunk check-in as
     [Tarball](https://www.sqlite.org/src/tarball/sqlite.tar.gz),
     [ZIP-archive](https://www.sqlite.org/src/zip/sqlite.zip), or
     [SQLite-archive](https://www.sqlite.org/src/sqlar/sqlite.sqlar).
@@ -47,28 +47,28 @@ archives or [SQLite archives](https://sqlite.org/cli.html#sqlar) as follows:
     then click on the "Tarball" or "ZIP Archive" links on the information
     page.

-If you do want to use Fossil to check out the source tree,
+If you do want to use Fossil to check out the source tree, 
 first install Fossil version 2.0 or later.
 (Source tarballs and precompiled binaries available
 [here](https://www.fossil-scm.org/fossil/uv/download.html).  Fossil is
-a stand-alone program.  To install, simply download or build the single
+a stand-alone program.  To install, simply download or build the single 
 executable file and put that file someplace on your $PATH.)
 Then run commands like this:

-        mkdir -p ~/sqlite ~/Fossils
+        mkdir ~/sqlite
        cd ~/sqlite
-        fossil clone https://www.sqlite.org/src ~/Fossils/sqlite.fossil
-        fossil open ~/Fossils/sqlite.fossil
-
+        fossil clone https://www.sqlite.org/src sqlite.fossil
+        fossil open sqlite.fossil
+    
 After setting up a repository using the steps above, you can always
-update to the latest version using:
+update to the lastest version using:

        fossil update trunk   ;# latest trunk check-in
        fossil update release ;# latest official release

 Or type "fossil ui" to get a web-based user interface.

-## Compiling for Unix-like systems
+## Compiling

 First create a directory in which to place
 the build products.  It is recommended, but not required, that the
@@ -94,22 +94,22 @@ script does not work out for you, there is a generic makefile named
 can copy and edit to suit your needs.  Comments on the generic makefile
 show what changes are needed.

-## Using MSVC for Windows systems
+## Using MSVC

 On Windows, all applicable build products can be compiled with MSVC.
 First open the command prompt window associated with the desired compiler
 version (e.g. "Developer Command Prompt for VS2013").  Next, use NMAKE
 with the provided "Makefile.msc" to build one of the supported targets.

-For example, from the parent directory of the source subtree named "sqlite":
+For example:

        mkdir bld
        cd bld
-        nmake /f ..\sqlite\Makefile.msc TOP=..\sqlite
-        nmake /f ..\sqlite\Makefile.msc sqlite3.c TOP=..\sqlite
-        nmake /f ..\sqlite\Makefile.msc sqlite3.dll TOP=..\sqlite
-        nmake /f ..\sqlite\Makefile.msc sqlite3.exe TOP=..\sqlite
-        nmake /f ..\sqlite\Makefile.msc test TOP=..\sqlite
+        nmake /f Makefile.msc TOP=..\sqlite
+        nmake /f Makefile.msc sqlite3.c TOP=..\sqlite
+        nmake /f Makefile.msc sqlite3.dll TOP=..\sqlite
+        nmake /f Makefile.msc sqlite3.exe TOP=..\sqlite
+        nmake /f Makefile.msc test TOP=..\sqlite

 There are several build options that can be set via the NMAKE command
 line.  For example, to build for WinRT, simply add "FOR_WINRT=1" argument
@@ -136,7 +136,7 @@ the "tclsqlite.c" file which implements the
 extension and only later escaped to the wild as an independent library.)

 Test scripts and programs are found in the **test/** subdirectory.
-Additional test code is found in other source repositories.
+Addtional test code is found in other source repositories.
 See [How SQLite Is Tested](http://www.sqlite.org/testing.html) for
 additional information.

@@ -170,7 +170,7 @@ at just the right spots. Note that comment text in the sqlite3.h file is
 used to generate much of the SQLite API documentation.  The Tcl scripts
 used to generate that documentation are in a separate source repository.

-The SQL language parser is **parse.c** which is generated from a grammar in
+The SQL language parser is **parse.c** which is generate from a grammar in
 the src/parse.y file.  The conversion of "parse.y" into "parse.c" is done
 by the [lemon](./doc/lemon.html) LALR(1) parser generator.  The source code
 for lemon is at tool/lemon.c.  Lemon uses the tool/lempar.c file as a
@@ -180,7 +180,7 @@ generates parse.c.

 The **opcodes.h** header file contains macros that define the numbers
 corresponding to opcodes in the "VDBE" virtual machine.  The opcodes.h
-file is generated by scanning the src/vdbe.c source file.  The
+file is generated by the scanning the src/vdbe.c source file.  The
 Tcl script at ./mkopcodeh.tcl does this scan and generates opcodes.h.
 A second Tcl script, ./mkopcodec.tcl, then scans opcodes.h to generate
 the **opcodes.c** source file, which contains a reverse mapping from
@@ -237,7 +237,7 @@ prepared statements, the description of
 [how transactions work](http://www.sqlite.org/atomiccommit.html), and
 the [overview of the query planner](http://www.sqlite.org/optoverview.html).

-Years of effort have gone into optimizing SQLite, both
+Years of effort have gone into optimizating SQLite, both
 for small size and high performance.  And optimizations tend to result in
 complex code.  So there is a lot of complexity in the current SQLite
 implementation.  It will not be the easiest library in the world to hack.
@@ -294,11 +294,11 @@ Key files:
     building the "testfixture.exe" program.  The testfixture.exe program is
     an enhanced Tcl shell.  The testfixture.exe program runs scripts in the
     test/ folder to validate the core SQLite code.  The testfixture program
-     (and some other test programs too) is built and run when you type
+     (and some other test programs too) is build and run when you type
     "make test".

  *  **ext/misc/json1.c** - This file implements the various JSON functions
-     that are built into SQLite.
+     that are build into SQLite.

 There are many other source files.  Each has a succinct header comment that
 describes its purpose and role within the larger system.
@@ -307,13 +307,11 @@ describes its purpose and role within the larger system.
 ## Verifying Code Authenticity

 The `manifest` file at the root directory of the source tree
-contains either a SHA3-256 hash (for newer files) or a SHA1 hash (for
+contains either a SHA3-256 hash (for newer files) or a SHA1 hash (for 
 older files) for every source file in the repository.
-The name of the version of the entire source tree is just the
-SHA3-256 hash of the `manifest` file itself, possibly with the
-last line of that file omitted if the last line begins with
-"`# Remove this line`".
-The `manifest.uuid` file should contain the SHA3-256 hash of the
+The SHA3-256 hash of the `manifest`
+file itself is the official name of the version of the source tree that you
+have. The `manifest.uuid` file should contain the SHA3-256 hash of the
 `manifest` file. If all of the above hash comparisons are correct, then
 you can be confident that your source tree is authentic and unadulterated.

@@ -1 +1 @@
-3.39.0
+3.34.1
@@ -285,10 +285,12 @@ SQLITE3EXEPDB = /pdb:sqlite3sh.pdb
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_FTS3=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_RTREE=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_GEOPOLY=1
+OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_JSON1=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_STMTVTAB=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DBPAGE_VTAB=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DBSTAT_VTAB=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_BYTECODE_VTAB=1
+OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DESERIALIZE=1
 !ENDIF
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
 !ENDIF
@@ -301,9 +303,6 @@ OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_SESSION=1
 OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_PREUPDATE_HOOK=1
 !ENDIF

-# Always enable math functions on Windows
-OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_MATH_FUNCTIONS
-
 # Should the rbu extension be enabled?  If so, add compilation options
 # to enable it.
 #
@@ -501,12 +500,12 @@ RCC = $(RC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) $(RCOPTS) $(RCCOPTS)
 #
 !IF $(USE_STDCALL)!=0 || $(FOR_WIN10)!=0
 !IF "$(PLATFORM)"=="x86"
-CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
-SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
 !ELSE
 !IFNDEF PLATFORM
-CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
-SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
+SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
 !ELSE
 CORE_CCONV_OPTS =
 SHELL_CCONV_OPTS =
@@ -958,6 +957,7 @@ LIBRESOBJS =
 SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_FTS4=1
 SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_EXPLAIN_COMMENTS=1
 SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_OFFSET_SQL_FUNC=1
+SHELL_COMPILE_OPTS = $(SHELL_COMPILE_OPTS) -DSQLITE_ENABLE_DESERIALIZE=1
 !ENDIF


@@ -105,7 +105,7 @@ may be specified in this manner as some require the amalgamation to be built
 with them enabled (see http://www.sqlite.org/compile.html). For example, the
 following will work:

-  "OPTS=-DSQLITE_ENABLE_STAT4=1 -DSQLITE_OMIT_JSON=1"
+  "OPTS=-DSQLITE_ENABLE_STAT4=1 -DSQLITE_ENABLE_JSON1=1"

 However, the following will not compile unless the amalgamation was built
 with it enabled:
@@ -87,9 +87,7 @@ AC_SUBST(READLINE_LIBS)
 AC_ARG_ENABLE(threadsafe, [AS_HELP_STRING(
  [--enable-threadsafe], [build a thread-safe library [default=yes]])], 
  [], [enable_threadsafe=yes])
-if test x"$enable_threadsafe" == "xno"; then
-  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_THREADSAFE=0"
-else
+if test x"$enable_threadsafe" != "xno"; then
  BUILD_CFLAGS="$BUILD_CFLAGS -D_REENTRANT=1 -DSQLITE_THREADSAFE=1"
  AC_SEARCH_LIBS(pthread_create, pthread)
  AC_SEARCH_LIBS(pthread_mutexattr_init, pthread)
@@ -111,34 +109,14 @@ AC_MSG_CHECKING([for whether to support dynamic extensions])
 AC_MSG_RESULT($enable_dynamic_extensions)
 #-----------------------------------------------------------------------

-#-----------------------------------------------------------------------
-#   --enable-math
-#
-AC_ARG_ENABLE(math, [AS_HELP_STRING(
-  [--enable-math], [SQL math functions [default=yes]])],
-  [], [enable_math=yes])
-AC_MSG_CHECKING([SQL math functions])
-if test x"$enable_math" = "xyes"; then
-  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_MATH_FUNCTIONS"
-  AC_MSG_RESULT([enabled])
-  AC_SEARCH_LIBS(ceil, m)
-else
-  AC_MSG_RESULT([disabled])
-fi
-#-----------------------------------------------------------------------
-
 #-----------------------------------------------------------------------
 #   --enable-fts4
 #
 AC_ARG_ENABLE(fts4, [AS_HELP_STRING(
  [--enable-fts4], [include fts4 support [default=yes]])], 
  [], [enable_fts4=yes])
-AC_MSG_CHECKING([FTS4 extension])
 if test x"$enable_fts4" = "xyes"; then
  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_FTS4"
-  AC_MSG_RESULT([enabled])
-else
-  AC_MSG_RESULT([disabled])
 fi
 #-----------------------------------------------------------------------

@@ -148,12 +126,8 @@ fi
 AC_ARG_ENABLE(fts3, [AS_HELP_STRING(
  [--enable-fts3], [include fts3 support [default=no]])], 
  [], [])
-AC_MSG_CHECKING([FTS3 extension])
 if test x"$enable_fts3" = "xyes" -a x"$enable_fts4" = "xno"; then
  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_FTS3"
-  AC_MSG_RESULT([enabled])
-else
-  AC_MSG_RESULT([disabled])
 fi
 #-----------------------------------------------------------------------

@@ -163,13 +137,20 @@ fi
 AC_ARG_ENABLE(fts5, [AS_HELP_STRING(
  [--enable-fts5], [include fts5 support [default=yes]])], 
  [], [enable_fts5=yes])
-AC_MSG_CHECKING([FTS5 extension])
 if test x"$enable_fts5" = "xyes"; then
-  AC_MSG_RESULT([enabled])
  AC_SEARCH_LIBS(log, m)
  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_FTS5"
-else
-  AC_MSG_RESULT([disabled])
+fi
+#-----------------------------------------------------------------------
+
+#-----------------------------------------------------------------------
+#   --enable-json1
+#
+AC_ARG_ENABLE(json1, [AS_HELP_STRING(
+  [--enable-json1], [include json1 support [default=yes]])], 
+  [],[enable_json1=yes])
+if test x"$enable_json1" = "xyes"; then
+  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_JSON1"
 fi
 #-----------------------------------------------------------------------

@@ -179,12 +160,8 @@ fi
 AC_ARG_ENABLE(rtree, [AS_HELP_STRING(
  [--enable-rtree], [include rtree support [default=yes]])], 
  [], [enable_rtree=yes])
-AC_MSG_CHECKING([RTREE extension])
 if test x"$enable_rtree" = "xyes"; then
  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_RTREE -DSQLITE_ENABLE_GEOPOLY"
-  AC_MSG_RESULT([enabled])
-else
-  AC_MSG_RESULT([disabled])
 fi
 #-----------------------------------------------------------------------

@@ -194,12 +171,8 @@ fi
 AC_ARG_ENABLE(session, [AS_HELP_STRING(
  [--enable-session], [enable the session extension [default=no]])], 
  [], [])
-AC_MSG_CHECKING([Session extension])
 if test x"$enable_session" = "xyes"; then
  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_ENABLE_SESSION -DSQLITE_ENABLE_PREUPDATE_HOOK"
-  AC_MSG_RESULT([enabled])
-else
-  AC_MSG_RESULT([disabled])
 fi
 #-----------------------------------------------------------------------

@@ -209,13 +182,9 @@ fi
 AC_ARG_ENABLE(debug, [AS_HELP_STRING(
  [--enable-debug], [build with debugging features enabled [default=no]])], 
  [], [])
-AC_MSG_CHECKING([Build type])
 if test x"$enable_debug" = "xyes"; then
  BUILD_CFLAGS="$BUILD_CFLAGS -DSQLITE_DEBUG -DSQLITE_ENABLE_SELECTTRACE -DSQLITE_ENABLE_WHERETRACE"
  CFLAGS="-g -O0"
-  AC_MSG_RESULT([debug])
-else
-  AC_MSG_RESULT([release])
 fi
 #-----------------------------------------------------------------------

@@ -14,10 +14,13 @@

 #define _CRT_SECURE_NO_DEPRECATE
 #include <windows.h>
-#ifdef _MSC_VER
+#define NO_SHLWAPI_GDI
+#define NO_SHLWAPI_STREAM
+#define NO_SHLWAPI_REG
+#include <shlwapi.h>
 #pragma comment (lib, "user32.lib")
 #pragma comment (lib, "kernel32.lib")
-#endif
+#pragma comment (lib, "shlwapi.lib")
 #include <stdio.h>
 #include <math.h>

@@ -36,15 +39,15 @@
 #endif


+
 /* protos */

 static int CheckForCompilerFeature(const char *option);
-static int CheckForLinkerFeature(char **options, int count);
+static int CheckForLinkerFeature(const char *option);
 static int IsIn(const char *string, const char *substring);
 static int SubstituteFile(const char *substs, const char *filename);
 static int QualifyPath(const char *path);
-static int LocateDependency(const char *keyfile);
-static const char *GetVersionFromFile(const char *filename, const char *match, int numdots);
+static const char *GetVersionFromFile(const char *filename, const char *match);
 static DWORD WINAPI ReadFromPipe(LPVOID args);

 /* globals */
@@ -56,8 +59,8 @@ typedef struct {
    char buffer[STATICBUFFERSIZE];
 } pipeinfo;

-pipeinfo Out = {INVALID_HANDLE_VALUE, ""};
-pipeinfo Err = {INVALID_HANDLE_VALUE, ""};
+pipeinfo Out = {INVALID_HANDLE_VALUE, '\0'};
+pipeinfo Err = {INVALID_HANDLE_VALUE, '\0'};

 /*
 * exitcodes: 0 == no, 1 == yes, 2 == error
@@ -71,7 +74,6 @@ main(
    char msg[300];
    DWORD dwWritten;
    int chars;
-    const char *s;

    /*
     * Make sure children (cl.exe and link.exe) are kept quiet.
@@ -100,16 +102,16 @@ main(
 	    }
 	    return CheckForCompilerFeature(argv[2]);
 	case 'l':
-	    if (argc < 3) {
+	    if (argc != 3) {
 		chars = snprintf(msg, sizeof(msg) - 1,
-	       		"usage: %s -l <linker option> ?<mandatory option> ...?\n"
+	       		"usage: %s -l <linker option>\n"
 			"Tests for whether link.exe supports an option\n"
 			"exitcodes: 0 == no, 1 == yes, 2 == error\n", argv[0]);
 		WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
 			&dwWritten, NULL);
 		return 2;
 	    }
-	    return CheckForLinkerFeature(&argv[2], argc-2);
+	    return CheckForLinkerFeature(argv[2]);
 	case 'f':
 	    if (argc == 2) {
 		chars = snprintf(msg, sizeof(msg) - 1,
@@ -151,13 +153,8 @@ main(
 		    &dwWritten, NULL);
 		return 0;
 	    }
-	    s = GetVersionFromFile(argv[2], argv[3], *(argv[1]+2) - '0');
-	    if (s && *s) {
-		printf("%s\n", s);
-		return 0;
-	    } else
-		return 1; /* Version not found. Return non-0 exit code */
-
+	    printf("%s\n", GetVersionFromFile(argv[2], argv[3]));
+	    return 0;
 	case 'Q':
 	    if (argc != 3) {
 		chars = snprintf(msg, sizeof(msg) - 1,
@@ -169,18 +166,6 @@ main(
 		return 2;
 	    }
 	    return QualifyPath(argv[2]);
-
-	case 'L':
-	    if (argc != 3) {
-		chars = snprintf(msg, sizeof(msg) - 1,
-		    "usage: %s -L keypath\n"
-		    "Emit the fully qualified path of directory containing keypath\n"
-		    "exitcodes: 0 == success, 1 == not found, 2 == error\n", argv[0]);
-		WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
-		    &dwWritten, NULL);
-		return 2;
-	    }
-	    return LocateDependency(argv[2]);
 	}
    }
    chars = snprintf(msg, sizeof(msg) - 1,
@@ -275,7 +260,7 @@ CheckForCompilerFeature(
 		"Tried to launch: \"%s\", but got error [%u]: ", cmdline, err);

 	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS|
-		FORMAT_MESSAGE_MAX_WIDTH_MASK, 0L, err, 0, (LPSTR)&msg[chars],
+		FORMAT_MESSAGE_MAX_WIDTH_MASK, 0L, err, 0, (LPVOID)&msg[chars],
 		(300-chars), 0);
 	WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, lstrlen(msg), &err,NULL);
 	return 2;
@@ -328,8 +313,7 @@ CheckForCompilerFeature(

 static int
 CheckForLinkerFeature(
-    char **options,
-    int count)
+    const char *option)
 {
    STARTUPINFO si;
    PROCESS_INFORMATION pi;
@@ -338,8 +322,7 @@ CheckForLinkerFeature(
    char msg[300];
    BOOL ok;
    HANDLE hProcess, h, pipeThreads[2];
-    int i;
-    char cmdline[255];
+    char cmdline[100];

    hProcess = GetCurrentProcess();

@@ -385,11 +368,7 @@ CheckForLinkerFeature(
     * Append our option for testing.
     */

-    for (i = 0; i < count; i++) {
-	lstrcat(cmdline, " \"");
-	lstrcat(cmdline, options[i]);
-	lstrcat(cmdline, "\"");
-    }
+    lstrcat(cmdline, option);

    ok = CreateProcess(
 	    NULL,	    /* Module name. */
@@ -409,7 +388,7 @@ CheckForLinkerFeature(
 		"Tried to launch: \"%s\", but got error [%u]: ", cmdline, err);

 	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS|
-		FORMAT_MESSAGE_MAX_WIDTH_MASK, 0L, err, 0, (LPSTR)&msg[chars],
+		FORMAT_MESSAGE_MAX_WIDTH_MASK, 0L, err, 0, (LPVOID)&msg[chars],
 		(300-chars), 0);
 	WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, lstrlen(msg), &err,NULL);
 	return 2;
@@ -454,9 +433,7 @@ CheckForLinkerFeature(
    return !(strstr(Out.buffer, "LNK1117") != NULL ||
 	    strstr(Err.buffer, "LNK1117") != NULL ||
 	    strstr(Out.buffer, "LNK4044") != NULL ||
-	    strstr(Err.buffer, "LNK4044") != NULL ||
-	    strstr(Out.buffer, "LNK4224") != NULL ||
-	    strstr(Err.buffer, "LNK4224") != NULL);
+	    strstr(Err.buffer, "LNK4044") != NULL);
 }

 static DWORD WINAPI
@@ -502,9 +479,9 @@ IsIn(
 static const char *
 GetVersionFromFile(
    const char *filename,
-    const char *match,
-    int numdots)
+    const char *match)
 {
+    size_t cbBuffer = 100;
    static char szBuffer[100];
    char *szResult = NULL;
    FILE *fp = fopen(filename, "rt");
@@ -514,17 +491,16 @@ GetVersionFromFile(
 	 * Read data until we see our match string.
 	 */

-	while (fgets(szBuffer, sizeof(szBuffer), fp) != NULL) {
+	while (fgets(szBuffer, cbBuffer, fp) != NULL) {
 	    LPSTR p, q;

 	    p = strstr(szBuffer, match);
 	    if (p != NULL) {
 		/*
-		 * Skip to first digit after the match.
+		 * Skip to first digit.
 		 */

-		p += strlen(match);
-		while (*p && !isdigit((unsigned char)*p)) {
+		while (*p && !isdigit(*p)) {
 		    ++p;
 		}

@@ -533,13 +509,13 @@ GetVersionFromFile(
 		 */

 		q = p;
-		while (*q && (strchr("0123456789.ab", *q)) && (((!strchr(".ab", *q)
-			    && !strchr("ab", q[-1])) || --numdots))) {
+		while (*q && (isalnum(*q) || *q == '.')) {
 		    ++q;
 		}

-		*q = 0;
-		szResult = p;
+		memcpy(szBuffer, p, q - p);
+		szBuffer[q-p] = 0;
+		szResult = szBuffer;
 		break;
 	    }
 	}
@@ -562,7 +538,7 @@ typedef struct list_item_t {
 static list_item_t *
 list_insert(list_item_t **listPtrPtr, const char *key, const char *value)
 {
-    list_item_t *itemPtr = (list_item_t *)malloc(sizeof(list_item_t));
+    list_item_t *itemPtr = malloc(sizeof(list_item_t));
    if (itemPtr) {
 	itemPtr->key = strdup(key);
 	itemPtr->value = strdup(value);
@@ -611,7 +587,9 @@ SubstituteFile(
    const char *substitutions,
    const char *filename)
 {
+    size_t cbBuffer = 1024;
    static char szBuffer[1024], szCopy[1024];
+    char *szResult = NULL;
    list_item_t *substPtr = NULL;
    FILE *fp, *sp;

@@ -624,7 +602,7 @@ SubstituteFile(

 	sp = fopen(substitutions, "rt");
 	if (sp != NULL) {
-	    while (fgets(szBuffer, sizeof(szBuffer), sp) != NULL) {
+	    while (fgets(szBuffer, cbBuffer, sp) != NULL) {
 		unsigned char *ks, *ke, *vs, *ve;
 		ks = (unsigned char*)szBuffer;
 		while (ks && *ks && isspace(*ks)) ++ks;
@@ -641,7 +619,7 @@ SubstituteFile(
 	}

 	/* debug: dump the list */
-#ifndef NDEBUG
+#ifdef _DEBUG
 	{
 	    int n = 0;
 	    list_item_t *p = NULL;
@@ -650,12 +628,12 @@ SubstituteFile(
 	    }
 	}
 #endif
-
+	
 	/*
 	 * Run the substitutions over each line of the input
 	 */
-
-	while (fgets(szBuffer, sizeof(szBuffer), fp) != NULL) {
+	
+	while (fgets(szBuffer, cbBuffer, fp) != NULL) {
 	    list_item_t *p = NULL;
 	    for (p = substPtr; p != NULL; p = p->nextPtr) {
 		char *m = strstr(szBuffer, p->key);
@@ -672,26 +650,15 @@ SubstituteFile(
 		    memcpy(szBuffer, szCopy, sizeof(szCopy));
 		}
 	    }
-	    printf("%s", szBuffer);
+	    printf(szBuffer);
 	}
-
+	
 	list_free(&substPtr);
    }
    fclose(fp);
    return 0;
 }

-BOOL FileExists(LPCTSTR szPath)
-{
-#ifndef INVALID_FILE_ATTRIBUTES
-    #define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
-#endif
-    DWORD pathAttr = GetFileAttributes(szPath);
-    return (pathAttr != INVALID_FILE_ATTRIBUTES &&
-	    !(pathAttr & FILE_ATTRIBUTE_DIRECTORY));
-}
-
-
 /*
 * QualifyPath --
 *
@@ -705,105 +672,17 @@ QualifyPath(
    const char *szPath)
 {
    char szCwd[MAX_PATH + 1];
-
-    GetFullPathName(szPath, sizeof(szCwd)-1, szCwd, NULL);
+    char szTmp[MAX_PATH + 1];
+    char *p;
+    GetCurrentDirectory(MAX_PATH, szCwd);
+    while ((p = strchr(szPath, '/')) && *p)
+	*p = '\\';
+    PathCombine(szTmp, szCwd, szPath);
+    PathCanonicalize(szCwd, szTmp);
    printf("%s\n", szCwd);
    return 0;
 }

-/*
- * Implements LocateDependency for a single directory. See that command
- * for an explanation.
- * Returns 0 if found after printing the directory.
- * Returns 1 if not found but no errors.
- * Returns 2 on any kind of error
- * Basically, these are used as exit codes for the process.
- */
-static int LocateDependencyHelper(const char *dir, const char *keypath)
-{
-    HANDLE hSearch;
-    char path[MAX_PATH+1];
-    size_t dirlen;
-    int keylen, ret;
-    WIN32_FIND_DATA finfo;
-
-    if (dir == NULL || keypath == NULL)
-	return 2; /* Have no real error reporting mechanism into nmake */
-    dirlen = strlen(dir);
-    if ((dirlen + 3) > sizeof(path))
-	return 2;
-    strncpy(path, dir, dirlen);
-    strncpy(path+dirlen, "\\*", 3);	/* Including terminating \0 */
-    keylen = strlen(keypath);
-
-#if 0 /* This function is not available in Visual C++ 6 */
-    /*
-     * Use numerics 0 -> FindExInfoStandard,
-     * 1 -> FindExSearchLimitToDirectories,
-     * as these are not defined in Visual C++ 6
-     */
-    hSearch = FindFirstFileEx(path, 0, &finfo, 1, NULL, 0);
-#else
-    hSearch = FindFirstFile(path, &finfo);
-#endif
-    if (hSearch == INVALID_HANDLE_VALUE)
-	return 1; /* Not found */
-
-    /* Loop through all subdirs checking if the keypath is under there */
-    ret = 1; /* Assume not found */
-    do {
-	int sublen;
-	/*
-	 * We need to check it is a directory despite the
-	 * FindExSearchLimitToDirectories in the above call. See SDK docs
-	 */
-	if ((finfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
-	    continue;
-	sublen = strlen(finfo.cFileName);
-	if ((dirlen+1+sublen+1+keylen+1) > sizeof(path))
-	    continue;		/* Path does not fit, assume not matched */
-	strncpy(path+dirlen+1, finfo.cFileName, sublen);
-	path[dirlen+1+sublen] = '\\';
-	strncpy(path+dirlen+1+sublen+1, keypath, keylen+1);
-	if (FileExists(path)) {
-	    /* Found a match, print to stdout */
-	    path[dirlen+1+sublen] = '\0';
-	    QualifyPath(path);
-	    ret = 0;
-	    break;
-	}
-    } while (FindNextFile(hSearch, &finfo));
-    FindClose(hSearch);
-    return ret;
-}
-
-/*
- * LocateDependency --
- *
- *	Locates a dependency for a package.
- *        keypath - a relative path within the package directory
- *          that is used to confirm it is the correct directory.
- *	The search path for the package directory is currently only
- *      the parent and grandparent of the current working directory.
- *      If found, the command prints
- *         name_DIRPATH=<full path of located directory>
- *      and returns 0. If not found, does not print anything and returns 1.
- */
-static int LocateDependency(const char *keypath)
-{
-    size_t i;
-    int ret;
-    static const char *paths[] = {"..", "..\\..", "..\\..\\.."};
-
-    for (i = 0; i < (sizeof(paths)/sizeof(paths[0])); ++i) {
-	ret = LocateDependencyHelper(paths[i], keypath);
-	if (ret == 0)
-	    return ret;
-    }
-    return ret;
-}
-
-
 /*
 * Local variables:
 *   mode: c
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for sqlite 3.39.0.
+# Generated by GNU Autoconf 2.69 for sqlite 3.34.1.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -726,8 +726,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='sqlite'
 PACKAGE_TARNAME='sqlite'
-PACKAGE_VERSION='3.39.0'
-PACKAGE_STRING='sqlite 3.39.0'
+PACKAGE_VERSION='3.34.1'
+PACKAGE_STRING='sqlite 3.34.1'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''

@@ -770,7 +770,6 @@ ac_includes_default="\
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 BUILD_CFLAGS
-AMALGAMATION_LINE_MACROS
 USE_GCOV
 OPT_FEATURE_FLAGS
 HAVE_ZLIB
@@ -904,14 +903,13 @@ with_readline_inc
 enable_debug
 enable_amalgamation
 enable_load_extension
-enable_math
-enable_json
-enable_all
 enable_memsys5
 enable_memsys3
+enable_all
 enable_fts3
 enable_fts4
 enable_fts5
+enable_json1
 enable_update_limit
 enable_geopoly
 enable_rtree
@@ -1468,7 +1466,7 @@ if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
-\`configure' configures sqlite 3.39.0 to adapt to many kinds of systems.
+\`configure' configures sqlite 3.34.1 to adapt to many kinds of systems.

 Usage: $0 [OPTION]... [VAR=VALUE]...

@@ -1533,7 +1531,7 @@ fi

 if test -n "$ac_init_help"; then
  case $ac_init_help in
-     short | recursive ) echo "Configuration of sqlite 3.39.0:";;
+     short | recursive ) echo "Configuration of sqlite 3.34.1:";;
   esac
  cat <<\_ACEOF

@@ -1559,14 +1557,13 @@ Optional Features:
                          separately
  --disable-load-extension
                          Disable loading of external extensions
-  --disable-math          Disable math functions
-  --disable-json          Disable JSON functions
-  --enable-all            Enable FTS4, FTS5, Geopoly, RTree, Sessions
  --enable-memsys5        Enable MEMSYS5
  --enable-memsys3        Enable MEMSYS3
+  --enable-all            Enable FTS4, FTS5, Geopoly, JSON, RTree, Sessions
  --enable-fts3           Enable the FTS3 extension
  --enable-fts4           Enable the FTS4 extension
  --enable-fts5           Enable the FTS5 extension
+  --enable-json1          Enable the JSON1 extension
  --enable-update-limit   Enable the UPDATE/DELETE LIMIT clause
  --enable-geopoly        Enable the GEOPOLY extension
  --enable-rtree          Enable the RTREE extension
@@ -1661,7 +1658,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
  cat <<\_ACEOF
-sqlite configure 3.39.0
+sqlite configure 3.34.1
 generated by GNU Autoconf 2.69

 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2080,7 +2077,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.

-It was created by sqlite $as_me 3.39.0, which was
+It was created by sqlite $as_me 3.34.1, which was
 generated by GNU Autoconf 2.69.  Invocation command line was

  $ $0 $@
@@ -3938,13 +3935,13 @@ if ${lt_cv_nm_interface+:} false; then :
 else
  lt_cv_nm_interface="BSD nm"
  echo "int some_variable = 0;" > conftest.$ac_ext
-  (eval echo "\"\$as_me:3941: $ac_compile\"" >&5)
+  (eval echo "\"\$as_me:3938: $ac_compile\"" >&5)
  (eval "$ac_compile" 2>conftest.err)
  cat conftest.err >&5
-  (eval echo "\"\$as_me:3944: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval echo "\"\$as_me:3941: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
  cat conftest.err >&5
-  (eval echo "\"\$as_me:3947: output\"" >&5)
+  (eval echo "\"\$as_me:3944: output\"" >&5)
  cat conftest.out >&5
  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
    lt_cv_nm_interface="MS dumpbin"
@@ -5150,7 +5147,7 @@ ia64-*-hpux*)
  ;;
 *-*-irix6*)
  # Find out which ABI we are using.
-  echo '#line 5153 "configure"' > conftest.$ac_ext
+  echo '#line 5150 "configure"' > conftest.$ac_ext
  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
@@ -6675,11 +6672,11 @@ else
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6678: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6675: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>conftest.err)
   ac_status=$?
   cat conftest.err >&5
-   echo "$as_me:6682: \$? = $ac_status" >&5
+   echo "$as_me:6679: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s "$ac_outfile"; then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings other than the usual output.
@@ -7014,11 +7011,11 @@ else
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:7017: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:7014: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>conftest.err)
   ac_status=$?
   cat conftest.err >&5
-   echo "$as_me:7021: \$? = $ac_status" >&5
+   echo "$as_me:7018: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s "$ac_outfile"; then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings other than the usual output.
@@ -7119,11 +7116,11 @@ else
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:7122: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:7119: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>out/conftest.err)
   ac_status=$?
   cat out/conftest.err >&5
-   echo "$as_me:7126: \$? = $ac_status" >&5
+   echo "$as_me:7123: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s out/conftest2.$ac_objext
   then
     # The compiler can only warn and ignore the option if not recognized
@@ -7174,11 +7171,11 @@ else
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:7177: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:7174: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>out/conftest.err)
   ac_status=$?
   cat out/conftest.err >&5
-   echo "$as_me:7181: \$? = $ac_status" >&5
+   echo "$as_me:7178: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s out/conftest2.$ac_objext
   then
     # The compiler can only warn and ignore the option if not recognized
@@ -9554,7 +9551,7 @@ else
  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
  lt_status=$lt_dlunknown
  cat > conftest.$ac_ext <<_LT_EOF
-#line 9557 "configure"
+#line 9554 "configure"
 #include "confdefs.h"

 #if HAVE_DLFCN_H
@@ -9650,7 +9647,7 @@ else
  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
  lt_status=$lt_dlunknown
  cat > conftest.$ac_ext <<_LT_EOF
-#line 9653 "configure"
+#line 9650 "configure"
 #include "confdefs.h"

 #if HAVE_DLFCN_H
@@ -10367,10 +10364,8 @@ fi
 if test "x${TCLLIBDIR+set}" != "xset" ; then
  TCLLIBDIR='$(libdir)'
  for i in `echo 'puts stdout $auto_path' | ${TCLSH_CMD}` ; do
-    if test -d $i ; then
-      TCLLIBDIR=$i
-      break
-    fi
+    TCLLIBDIR=$i
+    break
  done
  TCLLIBDIR="${TCLLIBDIR}/sqlite3"
 fi
@@ -11252,16 +11247,10 @@ if test "${enable_debug+set}" = set; then :
  enableval=$enable_debug;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build type" >&5
-$as_echo_n "checking build type... " >&6; }
 if test "${enable_debug}" = "yes" ; then
  TARGET_DEBUG="-DSQLITE_DEBUG=1 -DSQLITE_ENABLE_SELECTTRACE -DSQLITE_ENABLE_WHERETRACE -O0"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: debug" >&5
-$as_echo "debug" >&6; }
 else
  TARGET_DEBUG="-DNDEBUG"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: release" >&5
-$as_echo "release" >&6; }
 fi


@@ -11422,109 +11411,6 @@ else
  OPT_FEATURE_FLAGS="-DSQLITE_OMIT_LOAD_EXTENSION=1"
 fi

-##########
-# Do we want to support math functions
-#
-# Check whether --enable-math was given.
-if test "${enable_math+set}" = set; then :
-  enableval=$enable_math;
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support math functions" >&5
-$as_echo_n "checking whether to support math functions... " >&6; }
-if test "$enable_math" = "no"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_MATH_FUNCTIONS"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing ceil" >&5
-$as_echo_n "checking for library containing ceil... " >&6; }
-if ${ac_cv_search_ceil+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char ceil ();
-int
-main ()
-{
-return ceil ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' m; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_ceil=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_ceil+:} false; then :
-  break
-fi
-done
-if ${ac_cv_search_ceil+:} false; then :
-
-else
-  ac_cv_search_ceil=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_ceil" >&5
-$as_echo "$ac_cv_search_ceil" >&6; }
-ac_res=$ac_cv_search_ceil
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-
-fi
-
-fi
-
-##########
-# Do we want to support JSON functions
-#
-# Check whether --enable-json was given.
-if test "${enable_json+set}" = set; then :
-  enableval=$enable_json;
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support JSON functions" >&5
-$as_echo_n "checking whether to support JSON functions... " >&6; }
-if test "$enable_json" = "no"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_OMIT_JSON"
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-fi
-
-########
-# The --enable-all argument is short-hand to enable
-# multiple extensions.
-# Check whether --enable-all was given.
-if test "${enable_all+set}" = set; then :
-  enableval=$enable_all;
-fi
-
-
 ##########
 # Do we want to support memsys3 and/or memsys5
 #
@@ -11559,6 +11445,15 @@ else
 $as_echo "no" >&6; }
 fi

+########
+# The --enable-extensions argument is short-hand to enable
+# multiple extensions.
+# Check whether --enable-all was given.
+if test "${enable_all+set}" = set; then :
+  enableval=$enable_all;
+fi
+
+
 #########
 # See whether we should enable Full Text Search extensions
 # Check whether --enable-fts3 was given.
@@ -11566,26 +11461,15 @@ if test "${enable_fts3+set}" = set; then :
  enableval=$enable_fts3;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support FTS3" >&5
-$as_echo_n "checking whether to support FTS3... " >&6; }
 if test "${enable_fts3}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_FTS3"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 fi
 # Check whether --enable-fts4 was given.
 if test "${enable_fts4+set}" = set; then :
  enableval=$enable_fts4;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support FTS4" >&5
-$as_echo_n "checking whether to support FTS4... " >&6; }
 if test "${enable_fts4}" = "yes" -o "${enable_all}" = "yes" ; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_FTS4"
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing log" >&5
 $as_echo_n "checking for library containing log... " >&6; }
@@ -11643,20 +11527,13 @@ if test "$ac_res" != no; then :

 fi

-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 fi
 # Check whether --enable-fts5 was given.
 if test "${enable_fts5+set}" = set; then :
  enableval=$enable_fts5;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support FTS5" >&5
-$as_echo_n "checking whether to support FTS5... " >&6; }
 if test "${enable_fts5}" = "yes" -o "${enable_all}" = "yes" ; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_FTS5"
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing log" >&5
 $as_echo_n "checking for library containing log... " >&6; }
@@ -11714,9 +11591,17 @@ if test "$ac_res" != no; then :

 fi

-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+fi
+
+#########
+# See whether we should enable JSON1
+# Check whether --enable-json1 was given.
+if test "${enable_json1+set}" = set; then :
+  enableval=$enable_json1;
+fi
+
+if test "${enable_json1}" = "yes" -o "${enable_all}" = "yes" ; then
+  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_JSON1"
 fi

 #########
@@ -11727,15 +11612,8 @@ if test "${enable_update_limit+set}" = set; then :
  enableval=$enable_update_limit;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support LIMIT on UPDATE and DELETE statements" >&5
-$as_echo_n "checking whether to support LIMIT on UPDATE and DELETE statements... " >&6; }
 if test "${enable_update_limit}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 fi

 #########
@@ -11747,16 +11625,9 @@ else
  enable_geopoly=no
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support GEOPOLY" >&5
-$as_echo_n "checking whether to support GEOPOLY... " >&6; }
 if test "${enable_geopoly}" = "yes" -o "${enable_all}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_GEOPOLY"
  enable_rtree=yes
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 fi

 #########
@@ -11766,15 +11637,8 @@ if test "${enable_rtree+set}" = set; then :
  enableval=$enable_rtree;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support RTREE" >&5
-$as_echo_n "checking whether to support RTREE... " >&6; }
 if test "${enable_rtree}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_RTREE"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 fi

 #########
@@ -11784,16 +11648,9 @@ if test "${enable_session+set}" = set; then :
  enableval=$enable_session;
 fi

-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to support SESSION" >&5
-$as_echo_n "checking whether to support SESSION... " >&6; }
 if test "${enable_session}" = "yes" -o "${enable_all}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_SESSION"
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_PREUPDATE_HOOK"
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 fi

 #########
@@ -11861,17 +11718,6 @@ else
 fi


-#########
-# Enable/disabled amalagamation line macros
-########
-AMALGAMATION_LINE_MACROS=--linemacros=0
-if test "${amalgamation_line_macros}" = "yes" ; then
-  AMALGAMATION_LINE_MACROS=--linemacros=1
-fi
-if test "${amalgamation_line_macros}" = "no" ; then
-  AMALGAMATION_LINE_MACROS=--linemacros=0
-fi
-

 #########
 # Output the config header
@@ -12390,7 +12236,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by sqlite $as_me 3.39.0, which was
+This file was extended by sqlite $as_me 3.34.1, which was
 generated by GNU Autoconf 2.69.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
@@ -12456,7 +12302,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-sqlite config.status 3.39.0
+sqlite config.status 3.34.1
 configured by $0, generated by GNU Autoconf 2.69,
  with options \\"\$ac_cs_config\\"

@@ -134,10 +134,8 @@ AC_ARG_VAR([TCLLIBDIR], [Where to install tcl plugin])
 if test "x${TCLLIBDIR+set}" != "xset" ; then
  TCLLIBDIR='$(libdir)'
  for i in `echo 'puts stdout $auto_path' | ${TCLSH_CMD}` ; do
-    if test -d $i ; then
-      TCLLIBDIR=$i
-      break
-    fi
+    TCLLIBDIR=$i
+    break
  done
  TCLLIBDIR="${TCLLIBDIR}/sqlite3"
 fi
@@ -555,13 +553,10 @@ AC_SEARCH_LIBS(fdatasync, [rt])
 #########
 # check for debug enabled
 AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug],[enable debugging & verbose explain]))
-AC_MSG_CHECKING([build type])
 if test "${enable_debug}" = "yes" ; then
  TARGET_DEBUG="-DSQLITE_DEBUG=1 -DSQLITE_ENABLE_SELECTTRACE -DSQLITE_ENABLE_WHERETRACE -O0"
-  AC_MSG_RESULT([debug])
 else
  TARGET_DEBUG="-DNDEBUG"
-  AC_MSG_RESULT([release])
 fi
 AC_SUBST(TARGET_DEBUG)

@@ -591,39 +586,6 @@ else
  OPT_FEATURE_FLAGS="-DSQLITE_OMIT_LOAD_EXTENSION=1"
 fi

-##########
-# Do we want to support math functions
-#
-AC_ARG_ENABLE(math, 
-AC_HELP_STRING([--disable-math],[Disable math functions]))
-AC_MSG_CHECKING([whether to support math functions])
-if test "$enable_math" = "no"; then
-  AC_MSG_RESULT([no])
-else
-  AC_MSG_RESULT([yes])
-  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_MATH_FUNCTIONS"
-  AC_SEARCH_LIBS(ceil, m)
-fi
-
-##########
-# Do we want to support JSON functions
-#
-AC_ARG_ENABLE(json, 
-AC_HELP_STRING([--disable-json],[Disable JSON functions]))
-AC_MSG_CHECKING([whether to support JSON functions])
-if test "$enable_json" = "no"; then
-  AC_MSG_RESULT([no])
-  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_OMIT_JSON"
-else
-  AC_MSG_RESULT([yes])
-fi
-
-########
-# The --enable-all argument is short-hand to enable
-# multiple extensions.
-AC_ARG_ENABLE(all, AC_HELP_STRING([--enable-all],
-      [Enable FTS4, FTS5, Geopoly, RTree, Sessions]))
-
 ##########
 # Do we want to support memsys3 and/or memsys5
 #
@@ -646,36 +608,37 @@ else
  AC_MSG_RESULT([no])
 fi

+########
+# The --enable-extensions argument is short-hand to enable
+# multiple extensions.
+AC_ARG_ENABLE(all, AC_HELP_STRING([--enable-all],
+      [Enable FTS4, FTS5, Geopoly, JSON, RTree, Sessions]))
+
 #########
 # See whether we should enable Full Text Search extensions
 AC_ARG_ENABLE(fts3, AC_HELP_STRING([--enable-fts3],
      [Enable the FTS3 extension]))
-AC_MSG_CHECKING([whether to support FTS3])
 if test "${enable_fts3}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_FTS3"
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
 fi
 AC_ARG_ENABLE(fts4, AC_HELP_STRING([--enable-fts4],
      [Enable the FTS4 extension]))
-AC_MSG_CHECKING([whether to support FTS4])
 if test "${enable_fts4}" = "yes" -o "${enable_all}" = "yes" ; then
-  AC_MSG_RESULT([yes])
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_FTS4"
  AC_SEARCH_LIBS([log],[m])
-else
-  AC_MSG_RESULT([no])
 fi
 AC_ARG_ENABLE(fts5, AC_HELP_STRING([--enable-fts5],
      [Enable the FTS5 extension]))
-AC_MSG_CHECKING([whether to support FTS5])
 if test "${enable_fts5}" = "yes" -o "${enable_all}" = "yes" ; then
-  AC_MSG_RESULT([yes])
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_FTS5"
  AC_SEARCH_LIBS([log],[m])
-else
-  AC_MSG_RESULT([no])
+fi
+
+#########
+# See whether we should enable JSON1
+AC_ARG_ENABLE(json1, AC_HELP_STRING([--enable-json1],[Enable the JSON1 extension]))
+if test "${enable_json1}" = "yes" -o "${enable_all}" = "yes" ; then
+  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_JSON1"
 fi

 #########
@@ -683,12 +646,8 @@ fi
 # statements.
 AC_ARG_ENABLE(update-limit, AC_HELP_STRING([--enable-update-limit],
      [Enable the UPDATE/DELETE LIMIT clause]))
-AC_MSG_CHECKING([whether to support LIMIT on UPDATE and DELETE statements])
 if test "${enable_update_limit}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT"
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
 fi

 #########
@@ -696,38 +655,26 @@ fi
 AC_ARG_ENABLE(geopoly, AC_HELP_STRING([--enable-geopoly],
      [Enable the GEOPOLY extension]),
      [enable_geopoly=yes],[enable_geopoly=no])
-AC_MSG_CHECKING([whether to support GEOPOLY])
 if test "${enable_geopoly}" = "yes" -o "${enable_all}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_GEOPOLY"
  enable_rtree=yes
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
 fi

 #########
 # See whether we should enable RTREE
 AC_ARG_ENABLE(rtree, AC_HELP_STRING([--enable-rtree],
      [Enable the RTREE extension]))
-AC_MSG_CHECKING([whether to support RTREE])
 if test "${enable_rtree}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_RTREE"
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
 fi

 #########
 # See whether we should enable the SESSION extension
 AC_ARG_ENABLE(session, AC_HELP_STRING([--enable-session],
      [Enable the SESSION extension]))
-AC_MSG_CHECKING([whether to support SESSION])
 if test "${enable_session}" = "yes" -o "${enable_all}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_SESSION"
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_PREUPDATE_HOOK"
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
 fi

 #########
@@ -792,17 +739,6 @@ else
 fi
 AC_SUBST(USE_GCOV)

-#########
-# Enable/disabled amalagamation line macros
-########
-AMALGAMATION_LINE_MACROS=--linemacros=0
-if test "${amalgamation_line_macros}" = "yes" ; then
-  AMALGAMATION_LINE_MACROS=--linemacros=1
-fi
-if test "${amalgamation_line_macros}" = "no" ; then
-  AMALGAMATION_LINE_MACROS=--linemacros=0
-fi
-AC_SUBST(AMALGAMATION_LINE_MACROS)

 #########
 # Output the config header
@@ -1,144 +0,0 @@
-# JSON Functions Enhancements (2022)
-
-This document summaries enhancements to the SQLite JSON support added in
-early 2022.
-
-## 1.0 Change summary:
-
-  1.  New **->** and **->>** operators that work like MySQL and PostgreSQL (PG).
-  2.  JSON functions are built-in rather than being an extension.  They
-      are included by default, but can be omitted using the
-      -DSQLITE_OMIT_JSON compile-time option.
-
-
-## 2.0 New operators **->** and **->>**
-
-The SQLite language adds two new binary operators **->** and **->>**.
-Both operators are similar to json_extract().  The left operand is
-JSON and the right operand is a JSON path expression (possibly abbreviated
-for compatibility with PG - see below).  So they are similar to a
-two-argument call to json_extract().
-
-The difference between -> and ->> (and json_extract()) is as follows:
-
-  *  The -> operator always returns JSON.
-
-  *  The ->> operator converts the answer into a primitive SQL datatype
-     such as TEXT, INTEGER, REAL, or NULL.  If a JSON object or array
-     is selected, that object or array is rendered as text.  If a JSON
-     value is selected, that value is converted into its corresponding
-     SQL type
-
-  *  The json_extract() interface returns JSON when a JSON object or
-     array is selected, or a primitive SQL datatype when a JSON value
-     is selected.  This is different from MySQL, in which json_extract()
-     always returns JSON, but the difference is retained because it has
-     worked that way for 6 years and changing it now would likely break
-     a lot of legacy code.
-
-In MySQL and PG, the ->> operator always returns TEXT (or NULL) and never
-INTEGER or REAL.  This is due to limitations in the type handling capabilities
-of those systems.  In MySQL and PG, the result type a function or operator
-may only depend on the type of its arguments, never the value of its arguments.
-But the underlying JSON type depends on the value of the JSON path
-expression, not the type of the JSON path expression (which is always TEXT).
-Hence, the result type of ->> in MySQL and PG is unable to vary according
-to the type of the JSON value being extracted.
-
-The type system in SQLite is more general.  Functions in SQLite are able
-to return different datatypes depending on the value of their arguments.
-So the ->> operator in SQLite is able to return TEXT, INTEGER, REAL, or NULL
-depending on the JSON type of the value being extracted.  This means that
-the behavior of the ->> is slightly different in SQLite versus MySQL and PG
-in that it will sometimes return INTEGER and REAL values, depending on its
-inputs.  It is possible to implement the ->> operator in SQLite so that it
-always operates exactly like MySQL and PG and always returns TEXT or NULL,
-but I have been unable to think of any situations where returning the
-actual JSON value this would cause problems, so I'm including the enhanced
-functionality in SQLite.
-
-The table below attempts to summarize the differences between the
-> and ->> operators and the json_extract() function, for SQLite, MySQL,
-and PG.  JSON values are shown using their SQL text representation but
-in a bold font.
-
-
-<table border=1 cellpadding=5 cellspacing=0>
-<tr><th>JSON<th>PATH<th>-&gt; operator<br>(all)<th>-&gt;&gt; operator<br>(MySQL/PG)
-    <th>-&gt;&gt; operator<br>(SQLite)<th>json_extract()<br>(SQLite)
-<tr><td> **'{"a":123}'**     <td>'$.a'<td> **'123'**     <td> '123'          <td> 123           <td> 123
-<tr><td> **'{"a":4.5}'**     <td>'$.a'<td> **'4.5'**     <td> '4.5'          <td> 4.5           <td> 4.5
-<tr><td> **'{"a":"xyz"}'**   <td>'$.a'<td> **'"xyz"'**   <td> 'xyz'          <td> 'xyz'         <td> 'xyz'
-<tr><td> **'{"a":null}'**    <td>'$.a'<td> **'null'**    <td> NULL           <td> NULL          <td> NULL
-<tr><td> **'{"a":[6,7,8]}'** <td>'$.a'<td> **'[6,7,8]'** <td> '[6,7,8]'      <td> '[6,7,8]'     <td> **'[6,7,8]'**
-<tr><td> **'{"a":{"x":9}}'** <td>'$.a'<td> **'{"x":9}'** <td> '{"x":9}'      <td> '{"x":9}'     <td> **'{"x":9}'**
-<tr><td> **'{"b":999}'**     <td>'$.a'<td> NULL          <td> NULL           <td> NULL          <td> NULL
-</table>
-
-Important points about the table above:
-
-  *  The -> operator always returns either JSON or NULL.
-
-  *  The ->> operator never returns JSON.  It always returns TEXT or NULL, or in the
-     case of SQLite, INTEGER or REAL.
-
-  *  The MySQL json_extract() function works exactly the same
-     as the MySQL -> operator.
-
-  *  The SQLite json_extract() operator works like -> for JSON objects and
-     arrays, and like ->> for JSON values.
-
-  *  The -> operator works the same for all systems.
-
-  *  The only difference in ->> between SQLite and other systems is that
-     when the JSON value is numeric, SQLite returns a numeric SQL value,
-     whereas the other systems return a text representation of the numeric
-     value.
-
-### 2.1 Abbreviated JSON path expressions for PG compatibility
-
-The table above always shows the full JSON path expression: '$.a'.  But
-PG does not accept this syntax.  PG only allows a single JSON object label
-name or a single integer array index.  In order to provide compatibility
-with PG, The -> and ->> operators in SQLite are extended to also support
-a JSON object label or an integer array index for the right-hand side
-operand, in addition to a full JSON path expression.
-
-Thus, a -> or ->> operator that works on MySQL will work in
-SQLite.  And a -> or ->> operator that works in PG will work in SQLite.
-But because SQLite supports the union of the disjoint capabilities of
-MySQL and PG, there will always be -> and ->> operators that work in
-SQLite that do not work in one of MySQL and PG.  This is an unavoidable
-consequence of the different syntax for -> and ->> in MySQL and PG.
-
-In the following table, assume that "value1" is a JSON object and
-"value2" is a JSON array.
-
-<table border=1 cellpadding=5 cellspacing=0>
-<tr><th>SQL expression     <th>Works in MySQL?<th>Works in PG?<th>Works in SQLite
-<tr><td>value1-&gt;'$.a'   <td> yes           <td>  no        <td> yes
-<tr><td>value1-&gt;'a'     <td> no            <td>  yes       <td> yes
-<tr><td>value2-&gt;'$[2]'  <td> yes           <td>  no        <td> yes
-<tr><td>value2-&gt;2       <td> no            <td>  yes       <td> yes
-</table>
-
-The abbreviated JSON path expressions only work for the -> and ->> operators
-in SQLite.  The json_extract() function, and all other built-in SQLite
-JSON functions, continue to require complete JSON path expressions for their
-PATH arguments.
-
-## 3.0 JSON moved into the core
-
-The JSON interface is now moved into the SQLite core.
-
-When originally written in 2015, the JSON functions were an extension
-that could be optionally included at compile-time, or loaded at run-time.
-The implementation was in a source file named ext/misc/json1.c in the
-source tree.  JSON functions were only compiled in if the
-DSQLITE_ENABLE_JSON1 compile-time option was used.
-
-After these enhancements, the JSON functions are now built-ins.
-The source file that implements the JSON functions is moved to src/json.c.
-No special compile-time options are needed to load JSON into the build.
-Instead, there is a new -DSQLITE_OMIT_JSON compile-time option to leave
-them out.
@@ -697,7 +697,6 @@ other than that, the order of directives in Lemon is arbitrary.</p>
 <li><tt><a href='#stack_size'>%stack_size</a></tt>
 <li><tt><a href='#start_symbol'>%start_symbol</a></tt>
 <li><tt><a href='#syntax_error'>%syntax_error</a></tt>
-<li><tt><a href='#token'>%token</a></tt>
 <li><tt><a href='#token_class'>%token_class</a></tt>
 <li><tt><a href='#token_destructor'>%token_destructor</a></tt>
 <li><tt><a href='#token_prefix'>%token_prefix</a></tt>
@@ -1078,39 +1077,16 @@ can choose a different start symbol using the
 <a id='syntax_error'></a>
 <h4>4.4.19 The <tt>%syntax_error</tt> directive</h4>

-<p>See <a href='#errors'>Error Processing</a>.</p>
-
-<a id='token'></a>
-<h4>4.4.20 The <tt>%token</tt> directive</h4>
-
-<p>Tokens are normally created automatically, the first time they are used.
-Any identifier that begins with an upper-case letter is a token.
-
-<p>Sometimes it is useful to declare tokens in advance, however.  The
-integer values assigned to each token determined by the order in which
-the tokens are seen.  So by declaring tokens in advance, it is possible to
-cause some tokens to have low-numbered values, which might be desirable in
-some grammers, or to have sequential values assigned to a sequence of
-related tokens.  For this reason, the %token directive is provided to
-declare tokens in advance.  The syntax is as follows:
-
-<blockquote>
-<tt>%token</tt> <i>TOKEN</i> <i>TOKEN...</i> <b>.</b>
-</blockquote></p>
-
-<p>The %token directive is followed by zero or more token symbols and
-terminated by a single ".".  Each token named is created if it does not
-already exist.  Tokens are created in order.
-
+<p>See <a href='#error_processing'>Error Processing</a>.</p>

 <a id='token_class'></a>
-<h4>4.4.21 The <tt>%token_class</tt> directive</h4>
+<h4>4.4.20 The <tt>%token_class</tt> directive</h4>

 <p>Undocumented.  Appears to be related to the MULTITERMINAL concept.
 <a href='http://sqlite.org/src/fdiff?v1=796930d5fc2036c7&v2=624b24c5dc048e09&sbs=0'>Implementation</a>.</p>

 <a id='token_destructor'></a>
-<h4>4.4.22 The <tt>%token_destructor</tt> directive</h4>
+<h4>4.4.21 The <tt>%token_destructor</tt> directive</h4>

 <p>The <tt>%destructor</tt> directive assigns a destructor to a non-terminal
 symbol.  (See the description of the
@@ -1126,7 +1102,7 @@ Other than that, the token destructor works just like the non-terminal
 destructors.</p>

 <a id='token_prefix'></a>
-<h4>4.4.23 The <tt>%token_prefix</tt> directive</h4>
+<h4>4.4.22 The <tt>%token_prefix</tt> directive</h4>

 <p>Lemon generates #defines that assign small integer constants
 to each terminal symbol in the grammar.  If desired, Lemon will
@@ -1153,7 +1129,7 @@ to each of the #defines it generates.</p>
 </pre>

 <a id='token_type'></a><a id='ptype'></a>
-<h4>4.4.24 The <tt>%token_type</tt> and <tt>%type</tt> directives</h4>
+<h4>4.4.23 The <tt>%token_type</tt> and <tt>%type</tt> directives</h4>

 <p>These directives are used to specify the data types for values
 on the parser's stack associated with terminal and non-terminal
@@ -1190,7 +1166,7 @@ entry parser stack will require 100K of heap space.  If you are willing
 and able to pay that price, fine.  You just need to know.</p>

 <a id='pwildcard'></a>
-<h4>4.4.25 The <tt>%wildcard</tt> directive</h4>
+<h4>4.4.24 The <tt>%wildcard</tt> directive</h4>

 <p>The <tt>%wildcard</tt> directive is followed by a single token name and a
 period.  This directive specifies that the identified token should
@@ -1200,7 +1176,7 @@ match any input token.</p>
 the wildcard token and some other token, the other token is always used.
 The wildcard token is only matched if there are no alternatives.</p>

-<a id='errors'></a>
+<a id='error_processing'></a>
 <h2>5.0 Error Processing</h2>

 <p>After extensive experimentation over several years, it has been
@@ -28,7 +28,6 @@ if {[info commands sqlite3_expert_new]==""} {
  return
 }

-
 set CLI [test_binary_name sqlite3]
 set CMD [test_binary_name sqlite3_expert]

@@ -103,7 +102,7 @@ do_setup_rec_test $tn.1 { CREATE TABLE t1(a, b, c) } {
  SELECT * FROM t1
 } {
  (no new indexes)
-  SCAN t1
+  SCAN TABLE t1
 }

 do_setup_rec_test $tn.2 {
@@ -112,7 +111,7 @@ do_setup_rec_test $tn.2 {
  SELECT * FROM t1 WHERE b>?;
 } {
  CREATE INDEX t1_idx_00000062 ON t1(b);
-  SEARCH t1 USING INDEX t1_idx_00000062 (b>?)
+  SEARCH TABLE t1 USING INDEX t1_idx_00000062 (b>?)
 }

 do_setup_rec_test $tn.3 {
@@ -121,7 +120,7 @@ do_setup_rec_test $tn.3 {
  SELECT * FROM t1 WHERE b COLLATE nocase BETWEEN ? AND ?
 } {
  CREATE INDEX t1_idx_3e094c27 ON t1(b COLLATE NOCASE);
-  SEARCH t1 USING INDEX t1_idx_3e094c27 (b>? AND b<?)
+  SEARCH TABLE t1 USING INDEX t1_idx_3e094c27 (b>? AND b<?)
 }

 do_setup_rec_test $tn.4 {
@@ -130,7 +129,7 @@ do_setup_rec_test $tn.4 {
  SELECT a FROM t1 ORDER BY b;
 } {
  CREATE INDEX t1_idx_00000062 ON t1(b);
-  SCAN t1 USING INDEX t1_idx_00000062
+  SCAN TABLE t1 USING INDEX t1_idx_00000062
 }

 do_setup_rec_test $tn.5 {
@@ -139,7 +138,7 @@ do_setup_rec_test $tn.5 {
  SELECT a FROM t1 WHERE a=? ORDER BY b;
 } {
  CREATE INDEX t1_idx_000123a7 ON t1(a, b);
-  SEARCH t1 USING COVERING INDEX t1_idx_000123a7 (a=?)
+  SEARCH TABLE t1 USING COVERING INDEX t1_idx_000123a7 (a=?)
 }

 if 0 {
@@ -149,7 +148,7 @@ do_setup_rec_test $tn.6 {
  SELECT min(a) FROM t1
 } {
  CREATE INDEX t1_idx_00000061 ON t1(a);
-  SEARCH t1 USING COVERING INDEX t1_idx_00000061
+  SEARCH TABLE t1 USING COVERING INDEX t1_idx_00000061
 }
 }

@@ -159,7 +158,7 @@ do_setup_rec_test $tn.7 {
  SELECT * FROM t1 ORDER BY a, b, c;
 } {
  CREATE INDEX t1_idx_033e95fe ON t1(a, b, c);
-  SCAN t1 USING COVERING INDEX t1_idx_033e95fe
+  SCAN TABLE t1 USING COVERING INDEX t1_idx_033e95fe
 }

 #do_setup_rec_test $tn.1.8 {
@@ -168,7 +167,7 @@ do_setup_rec_test $tn.7 {
 #  SELECT * FROM t1 ORDER BY a ASC, b COLLATE nocase DESC, c ASC;
 #} {
 #  CREATE INDEX t1_idx_5be6e222 ON t1(a, b COLLATE NOCASE DESC, c);
-#  0|0|0|SCAN t1 USING COVERING INDEX t1_idx_5be6e222
+#  0|0|0|SCAN TABLE t1 USING COVERING INDEX t1_idx_5be6e222
 #}

 do_setup_rec_test $tn.8.1 {
@@ -177,7 +176,7 @@ do_setup_rec_test $tn.8.1 {
  SELECT * FROM t1 WHERE a=?
 } {
  CREATE INDEX t1_idx_00000061 ON t1(a);
-  SEARCH t1 USING INDEX t1_idx_00000061 (a=?)
+  SEARCH TABLE t1 USING INDEX t1_idx_00000061 (a=?)
 }
 do_setup_rec_test $tn.8.2 {
  CREATE TABLE t1(a, b COLLATE nocase, c);
@@ -185,7 +184,7 @@ do_setup_rec_test $tn.8.2 {
  SELECT * FROM t1 ORDER BY a ASC, b DESC, c ASC;
 } {
  CREATE INDEX t1_idx_5cb97285 ON t1(a, b DESC, c);
-  SCAN t1 USING COVERING INDEX t1_idx_5cb97285
+  SCAN TABLE t1 USING COVERING INDEX t1_idx_5cb97285
 }


@@ -196,8 +195,8 @@ do_setup_rec_test $tn.9.1 {
 } {
  SELECT * FROM "t t" WHERE a=?
 } {
-  CREATE INDEX "t t_idx_00000061" ON "t t"(a);
-  SEARCH t t USING INDEX t t_idx_00000061 (a=?) 
+  CREATE INDEX 't t_idx_00000061' ON 't t'(a);
+  SEARCH TABLE t t USING INDEX t t_idx_00000061 (a=?) 
 }

 do_setup_rec_test $tn.9.2 {
@@ -205,8 +204,8 @@ do_setup_rec_test $tn.9.2 {
 } {
  SELECT * FROM "t t" WHERE b BETWEEN ? AND ?
 } {
-  CREATE INDEX "t t_idx_00000062" ON "t t"(b);
-  SEARCH t t USING INDEX t t_idx_00000062 (b>? AND b<?)
+  CREATE INDEX 't t_idx_00000062' ON 't t'(b);
+  SEARCH TABLE t t USING INDEX t t_idx_00000062 (b>? AND b<?)
 }

 # Columns with names that require quotes.
@@ -217,7 +216,7 @@ do_setup_rec_test $tn.10.1 {
  SELECT * FROM t3 WHERE "b b" = ?
 } {
  CREATE INDEX t3_idx_00050c52 ON t3('b b');
-  SEARCH t3 USING INDEX t3_idx_00050c52 (b b=?)
+  SEARCH TABLE t3 USING INDEX t3_idx_00050c52 (b b=?)
 }

 do_setup_rec_test $tn.10.2 {
@@ -226,7 +225,7 @@ do_setup_rec_test $tn.10.2 {
  SELECT * FROM t3 ORDER BY "b b"
 } {
  CREATE INDEX t3_idx_00050c52 ON t3('b b');
-  SCAN t3 USING INDEX t3_idx_00050c52
+  SCAN TABLE t3 USING INDEX t3_idx_00050c52
 }

 # Transitive constraints
@@ -239,8 +238,8 @@ do_setup_rec_test $tn.11.1 {
 } {
  CREATE INDEX t5_idx_000123a7 ON t5(a, b);
  CREATE INDEX t6_idx_00000063 ON t6(c);
-  SEARCH t6 USING INDEX t6_idx_00000063 (c=?) 
-  SEARCH t5 USING COVERING INDEX t5_idx_000123a7 (a=? AND b=?)
+  SEARCH TABLE t6 USING INDEX t6_idx_00000063 (c=?) 
+  SEARCH TABLE t5 USING COVERING INDEX t5_idx_000123a7 (a=? AND b=?)
 }

 # OR terms.
@@ -254,9 +253,9 @@ do_setup_rec_test $tn.12.1 {
  CREATE INDEX t7_idx_00000061 ON t7(a);
  MULTI-INDEX OR
    INDEX 1
-      SEARCH t7 USING INDEX t7_idx_00000061 (a=?) 
+      SEARCH TABLE t7 USING INDEX t7_idx_00000061 (a=?) 
    INDEX 2
-      SEARCH t7 USING INDEX t7_idx_00000062 (b=?)
+      SEARCH TABLE t7 USING INDEX t7_idx_00000062 (b=?)
 }

 # rowid terms.
@@ -267,7 +266,7 @@ do_setup_rec_test $tn.13.1 {
  SELECT * FROM t8 WHERE rowid=?
 } {
  (no new indexes)
-  SEARCH t8 USING INTEGER PRIMARY KEY (rowid=?)
+  SEARCH TABLE t8 USING INTEGER PRIMARY KEY (rowid=?)
 }
 do_setup_rec_test $tn.13.2 {
  CREATE TABLE t8(a, b);
@@ -275,7 +274,7 @@ do_setup_rec_test $tn.13.2 {
  SELECT * FROM t8 ORDER BY rowid
 } {
  (no new indexes)
-  SCAN t8
+  SCAN TABLE t8
 }
 do_setup_rec_test $tn.13.3 {
  CREATE TABLE t8(a, b);
@@ -283,7 +282,7 @@ do_setup_rec_test $tn.13.3 {
  SELECT * FROM t8 WHERE a=? ORDER BY rowid
 } {
  CREATE INDEX t8_idx_00000061 ON t8(a); 
-  SEARCH t8 USING INDEX t8_idx_00000061 (a=?)
+  SEARCH TABLE t8 USING INDEX t8_idx_00000061 (a=?)
 }

 # Triggers
@@ -298,7 +297,7 @@ do_setup_rec_test $tn.14 {
  INSERT INTO t9 VALUES(?, ?, ?);
 } {
  CREATE INDEX t10_idx_00000062 ON t10(b); 
-  SEARCH t10 USING INDEX t10_idx_00000062 (b=?)
+  SEARCH TABLE t10 USING INDEX t10_idx_00000062 (b=?)
 }

 do_setup_rec_test $tn.15 {
@@ -314,8 +313,8 @@ do_setup_rec_test $tn.15 {
  SELECT * FROM t2, t1 WHERE b=? AND d=? AND t2.rowid=t1.rowid
 } {
  CREATE INDEX t2_idx_00000064 ON t2(d);
-  SEARCH t2 USING INDEX t2_idx_00000064 (d=?) 
-  SEARCH t1 USING INTEGER PRIMARY KEY (rowid=?)
+  SEARCH TABLE t2 USING INDEX t2_idx_00000064 (d=?) 
+  SEARCH TABLE t1 USING INTEGER PRIMARY KEY (rowid=?)
 }

 do_setup_rec_test $tn.16 {
@@ -324,7 +323,7 @@ do_setup_rec_test $tn.16 {
  SELECT * FROM t1 WHERE b IS NOT NULL;
 } {
  (no new indexes)
-  SCAN t1
+  SCAN TABLE t1
 }

 do_setup_rec_test $tn.17.1 {
@@ -333,7 +332,7 @@ do_setup_rec_test $tn.17.1 {
  SELECT * FROM example WHERE a=?
 } {
  (no new indexes)
-  SEARCH example USING INDEX sqlite_autoindex_example_1 (A=?)
+  SEARCH TABLE example USING INDEX sqlite_autoindex_example_1 (A=?)
 }
 do_setup_rec_test $tn.17.2 {
  CREATE TABLE example (A INTEGER, B INTEGER, C INTEGER, PRIMARY KEY (A,B));
@@ -341,7 +340,7 @@ do_setup_rec_test $tn.17.2 {
  SELECT * FROM example WHERE b=?
 } {
  CREATE INDEX example_idx_00000042 ON example(B);
-  SEARCH example USING INDEX example_idx_00000042 (B=?)
+  SEARCH TABLE example USING INDEX example_idx_00000042 (B=?)
 }
 do_setup_rec_test $tn.17.3 {
  CREATE TABLE example (A INTEGER, B INTEGER, C INTEGER, PRIMARY KEY (A,B));
@@ -349,7 +348,7 @@ do_setup_rec_test $tn.17.3 {
  SELECT * FROM example WHERE a=? AND b=?
 } {
  (no new indexes)
-  SEARCH example USING INDEX sqlite_autoindex_example_1 (A=? AND B=?)
+  SEARCH TABLE example USING INDEX sqlite_autoindex_example_1 (A=? AND B=?)
 }
 do_setup_rec_test $tn.17.4 {
  CREATE TABLE example (A INTEGER, B INTEGER, C INTEGER, PRIMARY KEY (A,B));
@@ -357,7 +356,7 @@ do_setup_rec_test $tn.17.4 {
  SELECT * FROM example WHERE a=? AND b>?
 } {
  (no new indexes)
-  SEARCH example USING INDEX sqlite_autoindex_example_1 (A=? AND B>?)
+  SEARCH TABLE example USING INDEX sqlite_autoindex_example_1 (A=? AND B>?)
 }
 do_setup_rec_test $tn.17.5 {
  CREATE TABLE example (A INTEGER, B INTEGER, C INTEGER, PRIMARY KEY (A,B));
@@ -365,30 +364,7 @@ do_setup_rec_test $tn.17.5 {
  SELECT * FROM example WHERE a>? AND b=?
 } {
  CREATE INDEX example_idx_0000cb3f ON example(B, A);
-  SEARCH example USING INDEX example_idx_0000cb3f (B=? AND A>?)
-}
-
-do_setup_rec_test $tn.18.0 {
-  CREATE TABLE SomeObject (
-     a INTEGER PRIMARY KEY,
-     x TEXT GENERATED ALWAYS AS(HEX(a)) VIRTUAL
-  );
-} {
-  SELECT x FROM SomeObject;
-} {
-  (no new indexes)
-  SCAN SomeObject
-}
-do_setup_rec_test $tn.18.1 {
-  CREATE TABLE SomeObject (
-     a INTEGER PRIMARY KEY,
-     x TEXT GENERATED ALWAYS AS(HEX(a)) VIRTUAL
-  );
-} {
-  SELECT * FROM SomeObject WHERE x=?;
-} {
-  CREATE INDEX SomeObject_idx_00000078 ON SomeObject(x);
-  SEARCH SomeObject USING COVERING INDEX SomeObject_idx_00000078 (x=?)
+  SEARCH TABLE example USING INDEX example_idx_0000cb3f (B=? AND A>?)
 }

 }
@@ -454,4 +430,5 @@ do_execsql_test 5.3 {
  t2 t2_idx_0001295b {100 20 5}
 }

+
 finish_test
@@ -15,23 +15,6 @@
 #include <string.h>
 #include <stdio.h>

-#if !defined(SQLITE_AMALGAMATION)
-#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST)
-# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1
-#endif
-#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS)
-# define ALWAYS(X)      (1)
-# define NEVER(X)       (0)
-#elif !defined(NDEBUG)
-# define ALWAYS(X)      ((X)?1:(assert(0),0))
-# define NEVER(X)       ((X)?(assert(0),1):0)
-#else
-# define ALWAYS(X)      (X)
-# define NEVER(X)       (X)
-#endif
-#endif /* !defined(SQLITE_AMALGAMATION) */
-
-
 #ifndef SQLITE_OMIT_VIRTUALTABLE 

 typedef sqlite3_int64 i64;
@@ -697,31 +680,21 @@ static int idxGetTableInfo(
 ){
  sqlite3_stmt *p1 = 0;
  int nCol = 0;
-  int nTab;
-  int nByte;
+  int nTab = STRLEN(zTab);
+  int nByte = sizeof(IdxTable) + nTab + 1;
  IdxTable *pNew = 0;
  int rc, rc2;
  char *pCsr = 0;
  int nPk = 0;

-  *ppOut = 0;
-  if( zTab==0 ) return SQLITE_ERROR;
-  nTab = STRLEN(zTab);
-  nByte = sizeof(IdxTable) + nTab + 1;
-  rc = idxPrintfPrepareStmt(db, &p1, pzErrmsg, "PRAGMA table_xinfo=%Q", zTab);
+  rc = idxPrintfPrepareStmt(db, &p1, pzErrmsg, "PRAGMA table_info=%Q", zTab);
  while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(p1) ){
    const char *zCol = (const char*)sqlite3_column_text(p1, 1);
-    const char *zColSeq = 0;
-    if( zCol==0 ){
-      rc = SQLITE_ERROR;
-      break;
-    }
    nByte += 1 + STRLEN(zCol);
    rc = sqlite3_table_column_metadata(
-        db, "main", zTab, zCol, 0, &zColSeq, 0, 0, 0
+        db, "main", zTab, zCol, 0, &zCol, 0, 0, 0
    );
-    if( zColSeq==0 ) zColSeq = "binary";
-    nByte += 1 + STRLEN(zColSeq);
+    nByte += 1 + STRLEN(zCol);
    nCol++;
    nPk += (sqlite3_column_int(p1, 5)>0);
  }
@@ -741,23 +714,19 @@ static int idxGetTableInfo(
  nCol = 0;
  while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(p1) ){
    const char *zCol = (const char*)sqlite3_column_text(p1, 1);
-    const char *zColSeq = 0;
-    int nCopy;
-    if( zCol==0 ) continue;
-    nCopy = STRLEN(zCol) + 1;
+    int nCopy = STRLEN(zCol) + 1;
    pNew->aCol[nCol].zName = pCsr;
    pNew->aCol[nCol].iPk = (sqlite3_column_int(p1, 5)==1 && nPk==1);
    memcpy(pCsr, zCol, nCopy);
    pCsr += nCopy;

    rc = sqlite3_table_column_metadata(
-        db, "main", zTab, zCol, 0, &zColSeq, 0, 0, 0
+        db, "main", zTab, zCol, 0, &zCol, 0, 0, 0
    );
    if( rc==SQLITE_OK ){
-      if( zColSeq==0 ) zColSeq = "binary";
-      nCopy = STRLEN(zColSeq) + 1;
+      nCopy = STRLEN(zCol) + 1;
      pNew->aCol[nCol].zColl = pCsr;
-      memcpy(pCsr, zColSeq, nCopy);
+      memcpy(pCsr, zCol, nCopy);
      pCsr += nCopy;
    }

@@ -768,9 +737,9 @@ static int idxGetTableInfo(
  if( rc!=SQLITE_OK ){
    sqlite3_free(pNew);
    pNew = 0;
-  }else if( ALWAYS(pNew!=0) ){
+  }else{
    pNew->zName = pCsr;
-    if( ALWAYS(pNew->zName!=0) ) memcpy(pNew->zName, zTab, nTab+1);
+    memcpy(pNew->zName, zTab, nTab+1);
  }

  *ppOut = pNew;
@@ -896,7 +865,6 @@ static int idxFindCompatible(
    IdxConstraint *pT = pTail;
    sqlite3_stmt *pInfo = 0;
    const char *zIdx = (const char*)sqlite3_column_text(pIdxList, 1);
-    if( zIdx==0 ) continue;

    /* Zero the IdxConstraint.bFlag values in the pEq list */
    for(pIter=pEq; pIter; pIter=pIter->pLink) pIter->bFlag = 0;
@@ -942,19 +910,6 @@ static int idxFindCompatible(
  return 0;
 }

-/* Callback for sqlite3_exec() with query with leading count(*) column.
- * The first argument is expected to be an int*, referent to be incremented
- * if that leading column is not exactly '0'.
- */
-static int countNonzeros(void* pCount, int nc,
-                         char* azResults[], char* azColumns[]){
-  (void)azColumns;  /* Suppress unused parameter warning */
-  if( nc>0 && (azResults[0][0]!='0' || azResults[0][1]!=0) ){
-    *((int *)pCount) += 1;
-  }
-  return 0;
-}
-
 static int idxCreateFromCons(
  sqlite3expert *p,
  IdxScan *pScan,
@@ -981,40 +936,17 @@ static int idxCreateFromCons(
    if( rc==SQLITE_OK ){
      /* Hash the list of columns to come up with a name for the index */
      const char *zTable = pScan->pTab->zName;
-      int quoteTable = idxIdentifierRequiresQuotes(zTable);
-      char *zName = 0;          /* Index name */
-      int collisions = 0;
-      do{
-        int i;
-        char *zFind;
-        for(i=0; zCols[i]; i++){
-          h += ((h<<3) + zCols[i]);
-        }
-        sqlite3_free(zName);
-        zName = sqlite3_mprintf("%s_idx_%08x", zTable, h);
-        if( zName==0 ) break;
-        /* Is is unique among table, view and index names? */
-        zFmt = "SELECT count(*) FROM sqlite_schema WHERE name=%Q"
-          " AND type in ('index','table','view')";
-        zFind = sqlite3_mprintf(zFmt, zName);
-        i = 0;
-        rc = sqlite3_exec(dbm, zFind, countNonzeros, &i, 0);
-        assert(rc==SQLITE_OK);
-        sqlite3_free(zFind);
-        if( i==0 ){
-          collisions = 0;
-          break;
-        }
-        ++collisions;
-      }while( collisions<50 && zName!=0 );
-      if( collisions ){
-        /* This return means "Gave up trying to find a unique index name." */
-        rc = SQLITE_BUSY_TIMEOUT;
-      }else if( zName==0 ){
+      char *zName;                /* Index name */
+      int i;
+      for(i=0; zCols[i]; i++){
+        h += ((h<<3) + zCols[i]);
+      }
+      zName = sqlite3_mprintf("%s_idx_%08x", zTable, h);
+      if( zName==0 ){ 
        rc = SQLITE_NOMEM;
      }else{
-        if( quoteTable ){
-          zFmt = "CREATE INDEX \"%w\" ON \"%w\"(%s)";
+        if( idxIdentifierRequiresQuotes(zTable) ){
+          zFmt = "CREATE INDEX '%q' ON %Q(%s)";
        }else{
          zFmt = "CREATE INDEX %s ON %s(%s)";
        }
@@ -1023,11 +955,7 @@ static int idxCreateFromCons(
          rc = SQLITE_NOMEM;
        }else{
          rc = sqlite3_exec(dbm, zIdx, 0, 0, p->pzErrmsg);
-          if( rc!=SQLITE_OK ){
-            rc = SQLITE_BUSY_TIMEOUT;
-          }else{
-            idxHashAdd(&rc, &p->hIdx, zName, zIdx);
-          }
+          idxHashAdd(&rc, &p->hIdx, zName, zIdx);
        }
        sqlite3_free(zName);
        sqlite3_free(zIdx);
@@ -1179,7 +1107,7 @@ static void idxWriteFree(IdxWrite *pTab){
 ** runs all the queries to see which indexes they prefer, and populates
 ** IdxStatement.zIdx and IdxStatement.zEQP with the results.
 */
-static int idxFindIndexes(
+int idxFindIndexes(
  sqlite3expert *p,
  char **pzErr                         /* OUT: Error message (sqlite3_malloc) */
 ){
@@ -1308,7 +1236,6 @@ static int idxProcessOneTrigger(
  rc = idxPrintfPrepareStmt(p->db, &pSelect, pzErr, zSql, zTab, zTab);
  while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSelect) ){
    const char *zCreate = (const char*)sqlite3_column_text(pSelect, 0);
-    if( zCreate==0 ) continue;
    rc = sqlite3_exec(p->dbv, zCreate, 0, 0, pzErr);
  }
  idxFinalize(&rc, pSelect);
@@ -1411,9 +1338,8 @@ static int idxCreateVtabSchema(sqlite3expert *p, char **pzErrmsg){
    const char *zName = (const char*)sqlite3_column_text(pSchema, 1);
    const char *zSql = (const char*)sqlite3_column_text(pSchema, 2);

-    if( zType==0 || zName==0 ) continue;
    if( zType[0]=='v' || zType[1]=='r' ){
-      if( zSql ) rc = sqlite3_exec(p->dbv, zSql, 0, 0, pzErrmsg);
+      rc = sqlite3_exec(p->dbv, zSql, 0, 0, pzErrmsg);
    }else{
      IdxTable *pTab;
      rc = idxGetTableInfo(p->db, zName, &pTab, pzErrmsg);
@@ -1550,7 +1476,6 @@ static void idxRemFunc(
    case SQLITE_BLOB:
    case SQLITE_TEXT: {
      int nByte = sqlite3_value_bytes(argv[1]);
-      const void *pData = 0;
      if( nByte>pSlot->nByte ){
        char *zNew = (char*)sqlite3_realloc(pSlot->z, nByte*2);
        if( zNew==0 ){
@@ -1562,11 +1487,9 @@ static void idxRemFunc(
      }
      pSlot->n = nByte;
      if( pSlot->eType==SQLITE_BLOB ){
-        pData = sqlite3_value_blob(argv[1]);
-        if( pData ) memcpy(pSlot->z, pData, nByte);
+        memcpy(pSlot->z, sqlite3_value_blob(argv[1]), nByte);
      }else{
-        pData = sqlite3_value_text(argv[1]);
-        memcpy(pSlot->z, pData, nByte);
+        memcpy(pSlot->z, sqlite3_value_text(argv[1]), nByte);
      }
      break;
    }
@@ -1777,7 +1700,6 @@ static int idxPopulateStat1(sqlite3expert *p, char **pzErr){
    i64 iRowid = sqlite3_column_int64(pAllIndex, 0);
    const char *zTab = (const char*)sqlite3_column_text(pAllIndex, 1);
    const char *zIdx = (const char*)sqlite3_column_text(pAllIndex, 2);
-    if( zTab==0 || zIdx==0 ) continue;
    if( p->iSample<100 && iPrev!=iRowid ){
      samplectx.target = (double)p->iSample / 100.0;
      samplectx.iTarget = p->iSample;
@@ -1844,14 +1766,14 @@ sqlite3expert *sqlite3_expert_new(sqlite3 *db, char **pzErrmsg){

  /* Copy the entire schema of database [db] into [dbm]. */
  if( rc==SQLITE_OK ){
-    sqlite3_stmt *pSql = 0;
+    sqlite3_stmt *pSql;
    rc = idxPrintfPrepareStmt(pNew->db, &pSql, pzErrmsg, 
        "SELECT sql FROM sqlite_schema WHERE name NOT LIKE 'sqlite_%%'"
        " AND sql NOT LIKE 'CREATE VIRTUAL %%'"
    );
    while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSql) ){
      const char *zSql = (const char*)sqlite3_column_text(pSql, 0);
-      if( zSql ) rc = sqlite3_exec(pNew->dbm, zSql, 0, 0, pzErrmsg);
+      rc = sqlite3_exec(pNew->dbm, zSql, 0, 0, pzErrmsg);
    }
    idxFinalize(&rc, pSql);
  }
@@ -1957,10 +1879,6 @@ int sqlite3_expert_analyze(sqlite3expert *p, char **pzErr){
  /* Create candidate indexes within the in-memory database file */
  if( rc==SQLITE_OK ){
    rc = idxCreateCandidates(p);
-  }else if ( rc==SQLITE_BUSY_TIMEOUT ){
-    if( pzErr )
-      *pzErr = sqlite3_mprintf("Cannot find a unique index name to propose.");
-    return rc;
  }

  /* Generate the stat1 data */
@@ -1,7 +0,0 @@
-_fiddle_exec
-_fiddle_interrupt
-_fiddle_experiment
-_fiddle_the_db
-_fiddle_db_arg
-_fiddle_db_filename
-_fiddle_reset_db
@@ -1,51 +0,0 @@
-_sqlite3_bind_blob
-_sqlite3_bind_double
-_sqlite3_bind_int
-_sqlite3_bind_int64
-_sqlite3_bind_null
-_sqlite3_bind_parameter_count
-_sqlite3_bind_parameter_index
-_sqlite3_bind_text
-_sqlite3_changes
-_sqlite3_clear_bindings
-_sqlite3_close_v2
-_sqlite3_column_blob
-_sqlite3_column_bytes
-_sqlite3_column_count
-_sqlite3_column_count
-_sqlite3_column_double
-_sqlite3_column_int
-_sqlite3_column_int64
-_sqlite3_column_name
-_sqlite3_column_text
-_sqlite3_column_type
-_sqlite3_compileoption_get
-_sqlite3_compileoption_used
-_sqlite3_create_function_v2
-_sqlite3_data_count
-_sqlite3_db_filename
-_sqlite3_errmsg
-_sqlite3_exec
-_sqlite3_finalize
-_sqlite3_interrupt
-_sqlite3_libversion
-_sqlite3_open
-_sqlite3_open_v2
-_sqlite3_prepare_v2
-_sqlite3_prepare_v2
-_sqlite3_reset
-_sqlite3_result_blob
-_sqlite3_result_double
-_sqlite3_result_error
-_sqlite3_result_int
-_sqlite3_result_null
-_sqlite3_result_text
-_sqlite3_sourceid
-_sqlite3_sql
-_sqlite3_step
-_sqlite3_value_blob
-_sqlite3_value_bytes
-_sqlite3_value_double
-_sqlite3_value_text
-_sqlite3_value_type
-_free
@@ -1,14 +0,0 @@
-ALLOC_NORMAL
-FS
-UTF8ToString
-addFunction
-allocate
-allocateUTF8OnStack
-ccall
-cwrap
-getValue
-removeFunction
-setValue
-stackAlloc
-stackRestore
-stackSave
@@ -1,34 +0,0 @@
-# This GNU makefile exists primarily to simplify/speed up development
-# from emacs. It is not part of the canonical build process.
-default:
-	$(MAKE) -C ../.. wasm -e emcc_opt=-O0
-
-clean:
-	$(MAKE) -C ../../ clean-wasm
-
-fiddle_files = emscripten.css fiddle.html \
-             fiddle.js fiddle-module.js \
-             fiddle-module.wasm fiddle-worker.js \
-             $(wildcard *.wasm.gz) $(wildcard *.js.gz)
-
-# fiddle_remote is the remote destination for the fiddle app. It
-# must be a [user@]HOST:/path for rsync.
-# Note that the target "should probably" contain a symlink of
-# index.html -> fiddle.html.
-fiddle_remote ?=
-ifeq (,$(fiddle_remote))
-ifneq (,$(wildcard /home/stephan))
-  fiddle_remote = wh2:www/wh/sqlite3/.
-else ifneq (,$(wildcard /home/drh))
-  #fiddle_remote = if appropriate, add that user@host:/path here
-endif
-endif
-
-$(fiddle_files): default
-
-push-fiddle: $(fiddle_files)
-	@if [ x = "x$(fiddle_remote)" ]; then \
-		echo "fiddle_remote must be a [user@]HOST:/path for rsync"; \
-		exit 1; \
-	fi
-	rsync -va $(fiddle_files) $(fiddle_remote)
@@ -1,144 +0,0 @@
-/*
-  2022-05-22
-
-  The author disclaims copyright to this source code.  In place of a
-  legal notice, here is a blessing:
-
-  *   May you do good and not evil.
-  *   May you find forgiveness for yourself and forgive others.
-  *   May you share freely, never taking more than you give.
-
-  ***********************************************************************
-
-  This file contains bootstrapping code used by various test scripts
-  which live in this file's directory.
-*/
-(function(){
-    /* querySelectorAll() proxy */
-    const EAll = function(/*[element=document,] cssSelector*/){
-        return (arguments.length>1 ? arguments[0] : document)
-            .querySelectorAll(arguments[arguments.length-1]);
-    };
-    /* querySelector() proxy */
-    const E = function(/*[element=document,] cssSelector*/){
-        return (arguments.length>1 ? arguments[0] : document)
-            .querySelector(arguments[arguments.length-1]);
-    };
-
-    /**
-       Helpers for writing sqlite3-specific tests.
-    */
-    self/*window or worker*/.SqliteTestUtil = {
-        /** Running total of the number of tests run via
-            this API. */
-        counter: 0,
-        /**
-           If expr is a function, it is called and its result
-           is returned, coerced to a bool, else expr, coerced to
-           a bool, is returned.
-        */
-        toBool: function(expr){
-            return (expr instanceof Function) ? !!expr() : !!expr;
-        },
-        /** abort() if expr is false. If expr is a function, it
-            is called and its result is evaluated.
-        */
-        assert: function f(expr, msg){
-            if(!f._){
-                f._ = ('undefined'===typeof abort
-                       ? (msg)=>{throw new Error(msg)}
-                       : abort);
-            }
-            ++this.counter;
-            if(!this.toBool(expr)){
-                f._(msg || "Assertion failed.");
-            }
-            return this;
-        },
-        /** Identical to assert() but throws instead of calling
-            abort(). */
-        affirm: function(expr, msg){
-            ++this.counter;
-            if(!this.toBool(expr)) throw new Error(msg || "Affirmation failed.");
-            return this;
-        },
-        /** Calls f() and squelches any exception it throws. If it
-            does not throw, this function throws. */
-        mustThrow: function(f, msg){
-            ++this.counter;
-            let err;
-            try{ f(); } catch(e){err=e;}
-            if(!err) throw new Error(msg || "Expected exception.");
-            return this;
-        },
-        /** Throws if expr is truthy or expr is a function and expr()
-            returns truthy. */
-        throwIf: function(expr, msg){
-            ++this.counter;
-            if(this.toBool(expr)) throw new Error(msg || "throwIf() failed");
-            return this;
-        },
-        /** Throws if expr is falsy or expr is a function and expr()
-            returns falsy. */
-        throwUnless: function(expr, msg){
-            ++this.counter;
-            if(!this.toBool(expr)) throw new Error(msg || "throwUnless() failed");
-            return this;
-        }
-    };
-
-    
-    /**
-       This is a module object for use with the emscripten-installed
-       initSqlite3Module() factory function.
-    */
-    self.sqlite3TestModule = {
-        postRun: [
-            /* function(theModule){...} */
-        ],
-        //onRuntimeInitialized: function(){},
-        /* Proxy for C-side stdout output. */
-        print: function(){
-            console.log.apply(console, Array.prototype.slice.call(arguments));
-        },
-        /* Proxy for C-side stderr output. */
-        printErr: function(){
-            console.error.apply(console, Array.prototype.slice.call(arguments));
-        },
-        /**
-           Called by the module init bits to report loading
-           progress. It gets passed an empty argument when loading is
-           done (after onRuntimeInitialized() and any this.postRun
-           callbacks have been run).
-        */
-        setStatus: function f(text){
-            if(!f.last){
-                f.last = { text: '', step: 0 };
-                f.ui = {
-                    status: E('#module-status'),
-                    progress: E('#module-progress'),
-                    spinner: E('#module-spinner')
-                };
-            }
-            if(text === f.last.text) return;
-            f.last.text = text;
-            if(f.ui.progress){
-                f.ui.progress.value = f.last.step;
-                f.ui.progress.max = f.last.step + 1;
-            }
-            ++f.last.step;
-            if(text) {
-                f.ui.status.classList.remove('hidden');
-                f.ui.status.innerText = text;
-            }else{
-                if(f.ui.progress){
-                    f.ui.progress.remove();
-                    f.ui.spinner.remove();
-                    delete f.ui.progress;
-                    delete f.ui.spinner;
-                }
-                f.ui.status.classList.add('hidden');
-            }
-        }
-    };
-})(self/*window or worker*/);
@@ -1,24 +0,0 @@
-/* emcscript-related styling, used during the module load/intialization processes... */
-.emscripten { padding-right: 0; margin-left: auto; margin-right: auto; display: block; }
-div.emscripten { text-align: center; }
-div.emscripten_border { border: 1px solid black; }
-#module-spinner { overflow: visible; }
-#module-spinner > * {
-    margin-top: 1em;
-}
-.spinner {
-    height: 50px;
-    width: 50px;
-    margin: 0px auto;
-    animation: rotation 0.8s linear infinite;
-    border-left: 10px solid rgb(0,150,240);
-    border-right: 10px solid rgb(0,150,240);
-    border-bottom: 10px solid rgb(0,150,240);
-    border-top: 10px solid rgb(100,0,200);
-    border-radius: 100%;
-    background-color: rgb(200,100,250);
-}
-@keyframes rotation {
-    from {transform: rotate(0deg);}
-    to {transform: rotate(360deg);}
-}
@@ -1,301 +0,0 @@
-/*
-  2022-05-20
-
-  The author disclaims copyright to this source code.  In place of a
-  legal notice, here is a blessing:
-
-  *   May you do good and not evil.
-  *   May you find forgiveness for yourself and forgive others.
-  *   May you share freely, never taking more than you give.
-
-  ***********************************************************************
-
-  This is the JS Worker file for the sqlite3 fiddle app. It loads the
-  sqlite3 wasm module and offers access to the db via the Worker
-  message-passing interface.
-
-  Forewarning: this API is still very much Under Construction and
-  subject to any number of changes as experience reveals what those
-  need to be.
-
-  Because we can have only a single message handler, as opposed to an
-  arbitrary number of discrete event listeners like with DOM elements,
-  we have to define a lower-level message API. Messages abstractly
-  look like:
-
-  { type: string, data: type-specific value }
-
-  Where 'type' is used for dispatching and 'data' is a
-  'type'-dependent value.
-
-  The 'type' values expected by each side of the main/worker
-  connection vary. The types are described below but subject to
-  change at any time as this experiment evolves.
-
-  Workers-to-Main types
-
-  - stdout, stderr: indicate stdout/stderr output from the wasm
-    layer. The data property is the string of the output, noting
-    that the emscripten binding emits these one line at a time. Thus,
-    if a C-side puts() emits multiple lines in a single call, the JS
-    side will see that as multiple calls. Example:
-
-    {type:'stdout', data: 'Hi, world.'}
-
-  - module: Status text. This is intended to alert the main thread
-    about module loading status so that, e.g., the main thread can
-    update a progress widget and DTRT when the module is finished
-    loading and available for work. Status messages come in the form
-    
-    {type:'module', data:{
-        type:'status',
-        data: {text:string|null, step:1-based-integer}
-    }
-
-    with an incrementing step value for each subsequent message. When
-    the module loading is complete, a message with a text value of
-    null is posted.
-
-  - working: data='start'|'end'. Indicates that work is about to be
-    sent to the module or has just completed. This can be used, e.g.,
-    to disable UI elements which should not be activated while work
-    is pending. Example:
-
-    {type:'working', data:'start'}
-
-  Main-to-Worker types:
-
-  - shellExec: data=text to execute as if it had been entered in the
-    sqlite3 CLI shell app (as opposed to sqlite3_exec()). This event
-    causes the worker to emit a 'working' event (data='start') before
-    it starts and a 'working' event (data='end') when it finished. If
-    called while work is currently being executed it emits stderr
-    message instead of doing actual work, as the underlying db cannot
-    handle concurrent tasks. Example:
-
-    {type:'shellExec', data: 'select * from sqlite_master'}
-
-  - More TBD as the higher-level db layer develops.
-*/
-
-/*
-  Apparent browser(s) bug: console messages emitted may be duplicated
-  in the console, even though they're provably only run once. See:
-
-  https://stackoverflow.com/questions/49659464
-
-  Noting that it happens in Firefox as well as Chrome. Harmless but
-  annoying.
-*/
-"use strict";
-(function(){
-    /**
-       Posts a message in the form {type,data} unless passed more than 2
-       args, in which case it posts {type, data:[arg1...argN]}.
-    */
-    const wMsg = function(type,data){
-        postMessage({
-            type,
-            data: arguments.length<3
-                ? data
-                : Array.prototype.slice.call(arguments,1)
-        });
-    };
-
-    const stdout = function(){wMsg('stdout', Array.prototype.slice.call(arguments));};
-    const stderr = function(){wMsg('stderr', Array.prototype.slice.call(arguments));};
-
-    self.onerror = function(/*message, source, lineno, colno, error*/) {
-        const err = arguments[4];
-        if(err && 'ExitStatus'==err.name){
-            /* This is relevant for the sqlite3 shell binding but not the
-               lower-level binding. */
-            fiddleModule.isDead = true;
-            stderr("FATAL ERROR:", err.message);
-            stderr("Restarting the app requires reloading the page.");
-            wMsg('error', err);
-        }
-        console.error(err);
-        fiddleModule.setStatus('Exception thrown, see JavaScript console: '+err);
-    };
-
-    const Sqlite3Shell = {
-        /** Returns the name of the currently-opened db. */
-        dbFilename: function f(){
-            if(!f._) f._ = fiddleModule.cwrap('fiddle_db_filename', "string", ['string']);
-            return f._();
-        },
-        /**
-           Runs the given text through the shell as if it had been typed
-           in by a user. Fires a working/start event before it starts and
-           working/end event when it finishes.
-        */
-        exec: function f(sql){
-            if(!f._) f._ = fiddleModule.cwrap('fiddle_exec', null, ['string']);
-            if(fiddleModule.isDead){
-                stderr("shell module has exit()ed. Cannot run SQL.");
-                return;
-            }
-            wMsg('working','start');
-            try {
-                if(f._running){
-                    stderr('Cannot run multiple commands concurrently.');
-                }else{
-                    f._running = true;
-                    f._(sql);
-                }
-            } finally {
-                delete f._running;
-                wMsg('working','end');
-            }
-        },
-        resetDb: function f(){
-            if(!f._) f._ = fiddleModule.cwrap('fiddle_reset_db', null);
-            stdout("Resetting database.");
-            f._();
-            stdout("Reset",this.dbFilename());
-        },
-        /* Interrupt can't work: this Worker is tied up working, so won't get the
-           interrupt event which would be needed to perform the interrupt. */
-        interrupt: function f(){
-            if(!f._) f._ = fiddleModule.cwrap('fiddle_interrupt', null);
-            stdout("Requesting interrupt.");
-            f._();
-        }
-    };
-
-    self.onmessage = function f(ev){
-        ev = ev.data;
-        if(!f.cache){
-            f.cache = {
-                prevFilename: null
-            };
-        }
-        //console.debug("worker: onmessage.data",ev);
-        switch(ev.type){
-            case 'shellExec': Sqlite3Shell.exec(ev.data); return;
-            case 'db-reset': Sqlite3Shell.resetDb(); return;
-            case 'interrupt': Sqlite3Shell.interrupt(); return;
-                /** Triggers the export of the current db. Fires an
-                    event in the form:
-
-                    {type:'db-export',
-                    data:{
-                    filename: name of db,
-                    buffer: contents of the db file (Uint8Array),
-                    error: on error, a message string and no buffer property.
-                    }
-                    }
-                */
-            case 'db-export': {
-                const fn = Sqlite3Shell.dbFilename();
-                stdout("Exporting",fn+".");
-                const fn2 = fn ? fn.split(/[/\\]/).pop() : null;
-                try{
-                    if(!fn2) throw new Error("DB appears to be closed.");
-                    wMsg('db-export',{
-                        filename: fn2,
-                        buffer: fiddleModule.FS.readFile(fn, {encoding:"binary"})
-                    });
-                }catch(e){
-                    /* Post a failure message so that UI elements disabled
-                       during the export can be re-enabled. */
-                    wMsg('db-export',{
-                        filename: fn,
-                        error: e.message
-                    });
-                }
-                return;
-            }
-            case 'open': {
-                /* Expects: {
-                   buffer: ArrayBuffer | Uint8Array,
-                   filename: for logging/informational purposes only
-                   } */
-                const opt = ev.data;
-                let buffer = opt.buffer;
-                if(buffer instanceof Uint8Array){
-                }else if(buffer instanceof ArrayBuffer){
-                    buffer = new Uint8Array(buffer);
-                }else{
-                    stderr("'open' expects {buffer:Uint8Array} containing an uploaded db.");
-                    return;
-                }
-                const fn = (
-                    opt.filename
-                        ? opt.filename.split(/[/\\]/).pop().replace('"','_')
-                        : ("db-"+((Math.random() * 10000000) | 0)+
-                           "-"+((Math.random() * 10000000) | 0)+".sqlite3")
-                );
-                /* We cannot delete the existing db file until the new one
-                   is installed, which means that we risk overflowing our
-                   quota (if any) by having both the previous and current
-                   db briefly installed in the virtual filesystem. */
-                fiddleModule.FS.createDataFile("/", fn, buffer, true, true);
-                const oldName = Sqlite3Shell.dbFilename();
-                Sqlite3Shell.exec('.open "/'+fn+'"');
-                if(oldName && oldName !== fn){
-                    try{fiddleModule.FS.unlink(oldName);}
-                    catch(e){/*ignored*/}
-                }
-                stdout("Replaced DB with",fn+".");
-                return;
-            }
-        };
-        console.warn("Unknown fiddle-worker message type:",ev);
-    };
-   
-    /**
-       emscripten module for use with build mode -sMODULARIZE.
-    */
-    const fiddleModule = {
-        print: stdout,
-        printErr: stderr,
-        /**
-           Intercepts status updates from the emscripting module init
-           and fires worker events with a type of 'status' and a
-           payload of:
-
-           {
-           text: string | null, // null at end of load process
-           step: integer // starts at 1, increments 1 per call
-           }
-
-           We have no way of knowing in advance how many steps will
-           be processed/posted, so creating a "percentage done" view is
-           not really practical. One can be approximated by giving it a
-           current value of message.step and max value of message.step+1,
-           though.
-
-           When work is finished, a message with a text value of null is
-           submitted.
-
-           After a message with text==null is posted, the module may later
-           post messages about fatal problems, e.g. an exit() being
-           triggered, so it is recommended that UI elements for posting
-           status messages not be outright removed from the DOM when
-           text==null, and that they instead be hidden until/unless
-           text!=null.
-        */
-        setStatus: function f(text){
-            if(!f.last) f.last = { step: 0, text: '' };
-            else if(text === f.last.text) return;
-            f.last.text = text;
-            wMsg('module',{
-                type:'status',
-                data:{step: ++f.last.step, text: text||null}
-            });
-        }
-    };
-
-    importScripts('fiddle-module.js');
-    /**
-       initFiddleModule() is installed via fiddle-module.js due to
-       building with:
-
-       emcc ... -sMODULARIZE=1 -sEXPORT_NAME=initFiddleModule
-    */
-    initFiddleModule(fiddleModule).then(function(thisModule){
-        wMsg('fiddle-ready');
-    });
-})();
@@ -1,283 +0,0 @@
-<!doctype html>
-<html lang="en-us">
-  <head>
-    <meta charset="utf-8">
-    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-    <title>SQLite3 Fiddle</title>
-    <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
-    <!-- to add a togglable terminal-style view, uncomment the following
-         two lines and ensure that these files are on the web server. -->
-    <!--script src="jqterm/jqterm-bundle.min.js"></script>
-    <link rel="stylesheet" href="jqterm/jquery.terminal.min.css"/-->
-    <link rel="stylesheet" href="emscripten.css"/>
-    <style>
-      /* The following styles are for app-level use. */
-      :root {
-          --sqlite-blue: #044a64;
-          --textarea-color1: #044a64;
-          --textarea-color2: white;
-      }
-      textarea {
-          font-family: monospace;
-          flex: 1 1 auto;
-          background-color: var(--textarea-color1);
-          color: var(--textarea-color2);
-      }
-      textarea#input {
-          color: var(--textarea-color1);
-          background-color: var(--textarea-color2);
-      }
-      header {
-          display: flex;
-          justify-content: space-between;
-          align-items: center;
-          background-color: var(--sqlite-blue);
-          color: white;
-          font-size: 120%;
-          font-weight: bold;
-          border-radius: 0.25em;
-          padding: 0.2em 0.5em;
-      }
-      header > .powered-by {
-          font-size: 80%;
-      }
-      header a, header a:visited, header a:hover {
-          color: inherit;
-      }
-      #main-wrapper {
-          display: flex;
-          flex-direction: column-reverse;
-          flex: 1 1 auto;
-          margin: 0.5em 0;
-          overflow: hidden;
-      }
-      #main-wrapper.side-by-side {
-          flex-direction: row;
-      }
-      #main-wrapper.side-by-side > fieldset {
-          margin-left: 0.25em;
-          margin-right: 0.25em;
-      }
-      #main-wrapper:not(.side-by-side) > fieldset {
-          margin-bottom: 0.25em;
-      }
-      #main-wrapper.swapio {
-          flex-direction: column;
-      }
-      #main-wrapper.side-by-side.swapio {
-          flex-direction: row-reverse;
-      }
-      .zone-wrapper{
-          display: flex;
-          margin: 0;
-          flex: 1 1 0%;
-          border-radius: 0.5em;
-          min-width: inherit/*important: resolves inability to scroll fieldset child element!*/;
-          padding: 0.35em 0 0 0;
-      }
-      .zone-wrapper textarea {
-          border-radius: 0.5em;
-          flex: 1 1 auto;
-          /*min/max width resolve an inexplicable margin on the RHS.  The -1em
-            is for the padding, else we overlap the parent boundaries.*/
-          /*min-width: calc(100% - 1em);
-          max-width: calc(100% - 1em);
-          padding: 0 0.5em;*/
-      }
-
-      .zone-wrapper.input { flex: 10 1 auto; }
-      .zone-wrapper.output { flex: 20 1 auto; }
-      .zone-wrapper > div {
-          display:flex;
-          flex: 1 1 0%;
-      }
-      .zone-wrapper.output {}
-      .button-bar {
-          display: flex;
-          flex-wrap: wrap;
-          align-items: center;
-          align-content: space-between;
-          justify-content: flex-start;
-      }
-      .button-bar > * {
-          margin: 0.05em 0.5em 0.05em 0;
-          flex: 0 1 auto;
-          align-self: auto;
-      }
-      label[for] {
-          cursor: pointer;
-      }
-      .error {
-          color: red;
-          background-color: yellow;
-      }
-      .hidden, .initially-hidden {
-          position: absolute !important;
-          opacity: 0 !important;
-          pointer-events: none !important;
-          display: none !important;
-      }
-      fieldset {
-          border-radius: 0.5em;
-          border: 1px inset;
-          padding: 0.25em;
-      }
-      fieldset.options {
-          font-size: 80%;
-          margin-top: 0.5em;
-      }
-      fieldset:not(.options) > legend {
-          font-size: 80%;
-      }
-      fieldset.options > div {
-          display: flex;
-          flex-wrap: wrap;
-      }
-      fieldset button {
-          font-size: inherit;
-      }
-      fieldset.collapsible > legend > .fieldset-toggle::after {
-          content: " [hide]";
-          position: relative;
-      }
-      fieldset.collapsible.collapsed > legend > .fieldset-toggle::after {
-          content: " [show]";
-          position: relative;
-      }
-      span.labeled-input {
-          padding: 0.25em;
-          margin: 0.05em 0.25em;
-          border-radius: 0.25em;
-          white-space: nowrap;
-          background: #0002;
-          display: flex;
-          align-items: center;
-      }
-      span.labeled-input > *:nth-child(2) {
-          margin-left: 0.3em;
-      }
-      .center { text-align: center; }
-      body.terminal-mode {
-          max-height: calc(100% - 2em);
-          display: flex;
-          flex-direction: column;
-          align-items: stretch;
-      }
-      #view-terminal {}
-      .app-view {
-          flex: 20 1 auto;
-      }
-      #view-split {
-          display: flex;
-          flex-direction: column-reverse;
-      }
-    </style>
-  </head>
-  <body>
-    <header id='titlebar'>
-      <span>SQLite3 Fiddle</span>
-      <span class='powered-by'>Powered by
-        <a href='https://sqlite.org'>SQLite3</a></span>
-    </header>
-    <!-- emscripten bits -->
-    <figure id="module-spinner">
-      <div class="spinner"></div>
-      <div class='center'><strong>Initializing app...</strong></div>
-      <div class='center'>
-        On a slow internet connection this may take a moment.  If this
-        message displays for "a long time", intialization may have
-        failed and the JavaScript console may contain clues as to why.
-      </div>
-    </figure>
-    <div class="emscripten" id="module-status">Downloading...</div>
-    <div class="emscripten">
-      <progress value="0" max="100" id="module-progress" hidden='1'></progress>  
-    </div><!-- /emscripten bits -->
-
-    <div id='view-terminal' class='app-view hidden initially-hidden'>
-      This is a placeholder for a terminal-like view which is not in
-      the default build.
-    </div>
-
-    <div id='view-split' class='app-view initially-hidden'>
-      <fieldset class='options collapsible'>
-        <legend><button class='fieldset-toggle'>Options</button></legend>
-        <div class=''>
-          <span class='labeled-input'>
-            <input type='checkbox' id='opt-cb-sbs'
-                   data-csstgt='#main-wrapper'
-                   data-cssclass='side-by-side'
-                   data-config='sideBySide'>
-            <label for='opt-cb-sbs'>Side-by-side</label>
-          </span>
-          <span class='labeled-input'>
-            <input type='checkbox' id='opt-cb-swapio'
-                   data-csstgt='#main-wrapper'
-                   data-cssclass='swapio'
-                   data-config='swapInOut'>
-            <label for='opt-cb-swapio'>Swap in/out</label>
-          </span>
-          <span class='labeled-input'>
-            <input type='checkbox' id='opt-cb-autoscroll'
-                   data-config='autoScrollOutput'>
-            <label for='opt-cb-autoscroll'>Auto-scroll output</label>
-          </span>
-          <span class='labeled-input'>
-            <input type='checkbox' id='opt-cb-autoclear'
-                   data-config='autoClearOutput'>
-            <label for='opt-cb-autoclear'>Auto-clear output</label>
-          </span>
-          <span class='labeled-input'>
-            <input type='file' id='load-db' class='hidden'/>
-            <button id='btn-load-db'>Load DB...</button>
-          </span>
-          <span class='labeled-input'>
-            <button id='btn-export'>Download DB</button>
-          </span>
-          <span class='labeled-input'>
-            <button id='btn-reset'>Reset DB</button>
-          </span>
-        </div>
-      </fieldset><!-- .options -->
-      <div id='main-wrapper' class=''>
-        <fieldset class='zone-wrapper input'>
-          <legend><div class='button-bar'>
-            <button id='btn-shell-exec'>Run</button>
-            <button id='btn-clear'>Clear Input</button>
-            <!--button data-cmd='.help'>Help</button-->
-            <select id='select-examples'></select>
-          </div></legend>
-          <div><textarea id="input"
-                         placeholder="Shell input. Ctrl-enter/shift-enter runs it.">
-- ==================================================
-- Use ctrl-enter or shift-enter to execute sqlite3
-- shell commands and SQL.
-- If a subset of the text is currently selected,
-- only that part is executed.
-- ==================================================
-.nullvalue NULL
-.headers on
-</textarea></div>
-        </fieldset>
-        <fieldset class='zone-wrapper output'>
-          <legend><div class='button-bar'>
-            <button id='btn-clear-output'>Clear Output</button>
-            <button id='btn-interrupt' class='hidden' disabled>Interrupt</button>
-            <!-- interruption cannot work in the current configuration
-                 because we cannot send an interrupt message when work
-                 is currently underway. At that point the Worker is
-                 tied up and will not receive the message. -->
-          </div></legend>
-          <div><textarea id="output" readonly
-                         placeholder="Shell output."></textarea></div>
-        </fieldset>
-      </div>
-    </div> <!-- #view-split -->
-    <!-- Maintenance notes:
-
-        ... TODO... currently being refactored...
-
-    -->
-    <script src="fiddle.js"></script>
-  </body>
-</html>
@@ -1,809 +0,0 @@
-/*
-  2022-05-20
-
-  The author disclaims copyright to this source code.  In place of a
-  legal notice, here is a blessing:
-
-  *   May you do good and not evil.
-  *   May you find forgiveness for yourself and forgive others.
-  *   May you share freely, never taking more than you give.
-
-  ***********************************************************************
-
-  This is the main entry point for the sqlite3 fiddle app. It sets up the
-  various UI bits, loads a Worker for the db connection, and manages the
-  communication between the UI and worker.
-*/
-(function(){
-    'use strict';
-    /* Recall that the 'self' symbol, except where locally
-       overwritten, refers to the global window or worker object. */
-
-    const storage = (function(NS/*namespace object in which to store this module*/){
-        /* Pedantic licensing note: this code originated in the Fossil SCM
-           source tree, where it has a different license, but the person who
-           ported it into sqlite is the same one who wrote it for fossil. */
-        'use strict';
-        NS = NS||{};
-
-        /**
-           This module provides a basic wrapper around localStorage
-           or sessionStorage or a dummy proxy object if neither
-           of those are available.
-        */
-        const tryStorage = function f(obj){
-            if(!f.key) f.key = 'storage.access.check';
-            try{
-                obj.setItem(f.key, 'f');
-                const x = obj.getItem(f.key);
-                obj.removeItem(f.key);
-                if(x!=='f') throw new Error(f.key+" failed")
-                return obj;
-            }catch(e){
-                return undefined;
-            }
-        };
-
-        /** Internal storage impl for this module. */
-        const $storage =
-              tryStorage(window.localStorage)
-              || tryStorage(window.sessionStorage)
-              || tryStorage({
-                  // A basic dummy xyzStorage stand-in
-                  $$$:{},
-                  setItem: function(k,v){this.$$$[k]=v},
-                  getItem: function(k){
-                      return this.$$$.hasOwnProperty(k) ? this.$$$[k] : undefined;
-                  },
-                  removeItem: function(k){delete this.$$$[k]},
-                  clear: function(){this.$$$={}}
-              });
-
-        /**
-           For the dummy storage we need to differentiate between
-           $storage and its real property storage for hasOwnProperty()
-           to work properly...
-        */
-        const $storageHolder = $storage.hasOwnProperty('$$$') ? $storage.$$$ : $storage;
-
-        /**
-           A prefix which gets internally applied to all storage module
-           property keys so that localStorage and sessionStorage across the
-           same browser profile instance do not "leak" across multiple apps
-           being hosted by the same origin server. Such cross-polination is
-           still there but, with this key prefix applied, it won't be
-           immediately visible via the storage API.
-
-           With this in place we can justify using localStorage instead of
-           sessionStorage.
-
-           One implication of using localStorage and sessionStorage is that
-           their scope (the same "origin" and client application/profile)
-           allows multiple apps on the same origin to use the same
-           storage. Thus /appA/foo could then see changes made via
-           /appB/foo. The data do not cross user- or browser boundaries,
-           though, so it "might" arguably be called a
-           feature. storageKeyPrefix was added so that we can sandbox that
-           state for each separate app which shares an origin.
-
-           See: https://fossil-scm.org/forum/forumpost/4afc4d34de
-
-           Sidebar: it might seem odd to provide a key prefix and stick all
-           properties in the topmost level of the storage object. We do that
-           because adding a layer of object to sandbox each app would mean
-           (de)serializing that whole tree on every storage property change.
-           e.g. instead of storageObject.projectName.foo we have
-           storageObject[storageKeyPrefix+'foo']. That's soley for
-           efficiency's sake (in terms of battery life and
-           environment-internal storage-level effort).
-        */
-        const storageKeyPrefix = (
-            $storageHolder===$storage/*localStorage or sessionStorage*/
-                ? (
-                    (NS.config ?
-                     (NS.config.projectCode || NS.config.projectName
-                      || NS.config.shortProjectName)
-                     : false)
-                        || window.location.pathname
-                )+'::' : (
-                    '' /* transient storage */
-                )
-        );
-
-        /**
-           A proxy for localStorage or sessionStorage or a
-           page-instance-local proxy, if neither one is availble.
-
-           Which exact storage implementation is uses is unspecified, and
-           apps must not rely on it.
-        */
-        NS.storage = {
-            storageKeyPrefix: storageKeyPrefix,
-            /** Sets the storage key k to value v, implicitly converting
-                it to a string. */
-            set: (k,v)=>$storage.setItem(storageKeyPrefix+k,v),
-            /** Sets storage key k to JSON.stringify(v). */
-            setJSON: (k,v)=>$storage.setItem(storageKeyPrefix+k,JSON.stringify(v)),
-            /** Returns the value for the given storage key, or
-                dflt if the key is not found in the storage. */
-            get: (k,dflt)=>$storageHolder.hasOwnProperty(
-                storageKeyPrefix+k
-            ) ? $storage.getItem(storageKeyPrefix+k) : dflt,
-            /** Returns true if the given key has a value of "true".  If the
-                key is not found, it returns true if the boolean value of dflt
-                is "true". (Remember that JS persistent storage values are all
-                strings.) */
-            getBool: function(k,dflt){
-                return 'true'===this.get(k,''+(!!dflt));
-            },
-            /** Returns the JSON.parse()'d value of the given
-                storage key's value, or dflt is the key is not
-                found or JSON.parse() fails. */
-            getJSON: function f(k,dflt){
-                try {
-                    const x = this.get(k,f);
-                    return x===f ? dflt : JSON.parse(x);
-                }
-                catch(e){return dflt}
-            },
-            /** Returns true if the storage contains the given key,
-                else false. */
-            contains: (k)=>$storageHolder.hasOwnProperty(storageKeyPrefix+k),
-            /** Removes the given key from the storage. Returns this. */
-            remove: function(k){
-                $storage.removeItem(storageKeyPrefix+k);
-                return this;
-            },
-            /** Clears ALL keys from the storage. Returns this. */
-            clear: function(){
-                this.keys().forEach((k)=>$storage.removeItem(/*w/o prefix*/k));
-                return this;
-            },
-            /** Returns an array of all keys currently in the storage. */
-            keys: ()=>Object.keys($storageHolder).filter((v)=>(v||'').startsWith(storageKeyPrefix)),
-            /** Returns true if this storage is transient (only available
-                until the page is reloaded), indicating that fileStorage
-                and sessionStorage are unavailable. */
-            isTransient: ()=>$storageHolder!==$storage,
-            /** Returns a symbolic name for the current storage mechanism. */
-            storageImplName: function(){
-                if($storage===window.localStorage) return 'localStorage';
-                else if($storage===window.sessionStorage) return 'sessionStorage';
-                else return 'transient';
-            },
-
-            /**
-               Returns a brief help text string for the currently-selected
-               storage type.
-            */
-            storageHelpDescription: function(){
-                return {
-                    localStorage: "Browser-local persistent storage with an "+
-                        "unspecified long-term lifetime (survives closing the browser, "+
-                        "but maybe not a browser upgrade).",
-                    sessionStorage: "Storage local to this browser tab, "+
-                        "lost if this tab is closed.",
-                    "transient": "Transient storage local to this invocation of this page."
-                }[this.storageImplName()];
-            }
-        };
-        return NS.storage;
-    })({})/*storage API setup*/;
-
-
-    /** Name of the stored copy of SqliteFiddle.config. */
-    const configStorageKey = 'sqlite3-fiddle-config';
-
-    /**
-       The SqliteFiddle object is intended to be the primary
-       app-level object for the main-thread side of the sqlite
-       fiddle application. It uses a worker thread to load the
-       sqlite WASM module and communicate with it.
-    */
-    const SF/*local convenience alias*/
-    = window.SqliteFiddle/*canonical name*/ = {
-        /* Config options. */
-        config: {
-            /* If true, SqliteFiddle.echo() will auto-scroll the
-               output widget to the bottom when it receives output,
-               else it won't. */
-            autoScrollOutput: true,
-            /* If true, the output area will be cleared before each
-               command is run, else it will not. */
-            autoClearOutput: false,
-            /* If true, SqliteFiddle.echo() will echo its output to
-               the console, in addition to its normal output widget.
-               That slows it down but is useful for testing. */
-            echoToConsole: false,
-            /* If true, display input/output areas side-by-side. */
-            sideBySide: true,
-            /* If true, swap positions of the input/output areas. */
-            swapInOut: false
-        },
-        /**
-           Emits the given text, followed by a line break, to the
-           output widget.  If given more than one argument, they are
-           join()'d together with a space between each. As a special
-           case, if passed a single array, that array is used in place
-           of the arguments array (this is to facilitate receiving
-           lists of arguments via worker events).
-        */
-        echo: function f(text) {
-            /* Maintenance reminder: we currently require/expect a textarea
-               output element. It might be nice to extend this to behave
-               differently if the output element is a non-textarea element,
-               in which case it would need to append the given text as a TEXT
-               node and add a line break. */
-            if(!f._){
-                f._ = document.getElementById('output');
-                f._.value = ''; // clear browser cache
-            }
-            if(arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
-            else if(1===arguments.length && Array.isArray(text)) text = text.join(' ');
-            // These replacements are necessary if you render to raw HTML
-            //text = text.replace(/&/g, "&amp;");
-            //text = text.replace(/</g, "&lt;");
-            //text = text.replace(/>/g, "&gt;");
-            //text = text.replace('\n', '<br>', 'g');
-            if(null===text){/*special case: clear output*/
-                f._.value = '';
-                return;
-            }else if(this.echo._clearPending){
-                delete this.echo._clearPending;
-                f._.value = '';
-            }
-            if(this.config.echoToConsole) console.log(text);
-            if(this.jqTerm) this.jqTerm.echo(text);
-            f._.value += text + "\n";
-            if(this.config.autoScrollOutput){
-                f._.scrollTop = f._.scrollHeight;
-            }
-        },
-        _msgMap: {},
-        /** Adds a worker message handler for messages of the given
-            type. */
-        addMsgHandler: function f(type,callback){
-            if(Array.isArray(type)){
-                type.forEach((t)=>this.addMsgHandler(t, callback));
-                return this;
-            }
-            (this._msgMap.hasOwnProperty(type)
-             ? this._msgMap[type]
-             : (this._msgMap[type] = [])).push(callback);
-            return this;
-        },
-        /** Given a worker message, runs all handlers for msg.type. */
-        runMsgHandlers: function(msg){
-            const list = (this._msgMap.hasOwnProperty(msg.type)
-                          ? this._msgMap[msg.type] : false);
-            if(!list){
-                console.warn("No handlers found for message type:",msg);
-                return false;
-            }
-            //console.debug("runMsgHandlers",msg);
-            list.forEach((f)=>f(msg));
-            return true;
-        },
-        /** Removes all message handlers for the given message type. */
-        clearMsgHandlers: function(type){
-            delete this._msgMap[type];
-            return this;
-        },
-        /* Posts a message in the form {type, data} to the db worker. Returns this. */
-        wMsg: function(type,data){
-            this.worker.postMessage({type, data});
-            return this;
-        },
-        /**
-           Prompts for confirmation and, if accepted, deletes
-           all content and tables in the (transient) database.
-        */
-        resetDb: function(){
-            if(window.confirm("Really destroy all content and tables "
-                              +"in the (transient) db?")){
-                this.wMsg('db-reset');
-            }
-            return this;
-        },
-        /** Stores this object's config in the browser's storage. */
-        storeConfig: function(){
-            storage.setJSON(configStorageKey,this.config);
-        }
-    };
-
-    if(1){ /* Restore SF.config */
-        const storedConfig = storage.getJSON(configStorageKey);
-        if(storedConfig){
-            /* Copy all properties to SF.config which are currently in
-               storedConfig. We don't bother copying any other
-               properties: those have been removed from the app in the
-               meantime. */
-            Object.keys(SF.config).forEach(function(k){
-                if(storedConfig.hasOwnProperty(k)){
-                    SF.config[k] = storedConfig[k];
-                }
-            });
-        }
-    }
-
-    SF.worker = new Worker('fiddle-worker.js');
-    SF.worker.onmessage = (ev)=>SF.runMsgHandlers(ev.data);
-    SF.addMsgHandler(['stdout', 'stderr'], (ev)=>SF.echo(ev.data));
-
-    /* querySelectorAll() proxy */
-    const EAll = function(/*[element=document,] cssSelector*/){
-        return (arguments.length>1 ? arguments[0] : document)
-            .querySelectorAll(arguments[arguments.length-1]);
-    };
-    /* querySelector() proxy */
-    const E = function(/*[element=document,] cssSelector*/){
-        return (arguments.length>1 ? arguments[0] : document)
-            .querySelector(arguments[arguments.length-1]);
-    };
-
-    /** Handles status updates from the Module object. */
-    SF.addMsgHandler('module', function f(ev){
-        ev = ev.data;
-        if('status'!==ev.type){
-            console.warn("Unexpected module-type message:",ev);
-            return;
-        }
-        if(!f.ui){
-            f.ui = {
-                status: E('#module-status'),
-                progress: E('#module-progress'),
-                spinner: E('#module-spinner')
-            };
-        }
-        const msg = ev.data;
-        if(f.ui.progres){
-            progress.value = msg.step;
-            progress.max = msg.step + 1/*we don't know how many steps to expect*/;
-        }
-        if(1==msg.step){
-            f.ui.progress.classList.remove('hidden');
-            f.ui.spinner.classList.remove('hidden');
-        }
-        if(msg.text){
-            f.ui.status.classList.remove('hidden');
-            f.ui.status.innerText = msg.text;
-        }else{
-            if(f.ui.progress){
-                f.ui.progress.remove();
-                f.ui.spinner.remove();
-                delete f.ui.progress;
-                delete f.ui.spinner;
-            }
-            f.ui.status.classList.add('hidden');
-            /* The module can post messages about fatal problems,
-               e.g. an exit() being triggered or assertion failure,
-               after the last "load" message has arrived, so
-               leave f.ui.status and message listener intact. */
-        }
-    });
-
-    /**
-       The 'fiddle-ready' event is fired (with no payload) when the
-       wasm module has finished loading. Interestingly, that happens
-       _before_ the final module:status event */
-    SF.addMsgHandler('fiddle-ready', function(){
-        SF.clearMsgHandlers('fiddle-ready');
-        self.onSFLoaded();
-    });
-
-    /**
-       Performs all app initialization which must wait until after the
-       worker module is loaded. This function removes itself when it's
-       called.
-    */
-    self.onSFLoaded = function(){
-        delete this.onSFLoaded;
-        // Unhide all elements which start out hidden
-        EAll('.initially-hidden').forEach((e)=>e.classList.remove('initially-hidden'));
-        E('#btn-reset').addEventListener('click',()=>SF.resetDb());
-        const taInput = E('#input');
-        const btnClearIn = E('#btn-clear');
-        btnClearIn.addEventListener('click',function(){
-            taInput.value = '';
-        },false);
-        // Ctrl-enter and shift-enter both run the current SQL.
-        taInput.addEventListener('keydown',function(ev){
-            if((ev.ctrlKey || ev.shiftKey) && 13 === ev.keyCode){
-                ev.preventDefault();
-                ev.stopPropagation();
-                btnShellExec.click();
-            }
-        }, false);
-        const taOutput = E('#output');
-        const btnClearOut = E('#btn-clear-output');
-        btnClearOut.addEventListener('click',function(){
-            taOutput.value = '';
-            if(SF.jqTerm) SF.jqTerm.clear();
-        },false);
-        const btnShellExec = E('#btn-shell-exec');
-        btnShellExec.addEventListener('click',function(ev){
-            let sql;
-            ev.preventDefault();
-            if(taInput.selectionStart<taInput.selectionEnd){
-                sql = taInput.value.substring(taInput.selectionStart,taInput.selectionEnd).trim();
-            }else{
-                sql = taInput.value.trim();
-            }
-            if(sql) SF.dbExec(sql);
-        },false);
-
-        const btnInterrupt = E("#btn-interrupt");
-        //btnInterrupt.classList.add('hidden');
-        /** To be called immediately before work is sent to the
-            worker. Updates some UI elements. The 'working'/'end'
-            event will apply the inverse, undoing the bits this
-            function does. This impl is not in the 'working'/'start'
-            event handler because that event is given to us
-            asynchronously _after_ we need to have performed this
-            work.
-        */
-        const preStartWork = function f(){
-            if(!f._){
-                const title = E('title');
-                f._ = {
-                    btnLabel: btnShellExec.innerText,
-                    pageTitle: title,
-                    pageTitleOrig: title.innerText
-                };
-            }
-            f._.pageTitle.innerText = "[working...] "+f._.pageTitleOrig;
-            btnShellExec.setAttribute('disabled','disabled');
-            btnInterrupt.removeAttribute('disabled','disabled');
-        };
-
-        /* Sends the given text to the db module to evaluate as if it
-           had been entered in the sqlite3 CLI shell. If it's null or
-           empty, this is a no-op except that the very first call will
-           initialize the db and output an informational header. */
-        SF.dbExec = function f(sql){
-            if(this.config.autoClearOutput){
-                this.echo._clearPending = true;
-            }
-            preStartWork();
-            this.wMsg('shellExec',sql);
-        };
-
-        SF.addMsgHandler('working',function f(ev){
-            switch(ev.data){
-                case 'start': /* See notes in preStartWork(). */; return;
-                case 'end':
-                    preStartWork._.pageTitle.innerText = preStartWork._.pageTitleOrig;
-                    btnShellExec.innerText = preStartWork._.btnLabel;
-                    btnShellExec.removeAttribute('disabled');
-                    btnInterrupt.setAttribute('disabled','disabled');
-                    return;
-            }
-            console.warn("Unhandled 'working' event:",ev.data);
-        });
-
-        /* For each checkbox with data-csstgt, set up a handler which
-           toggles the given CSS class on the element matching
-           E(data-csstgt). */
-        EAll('input[type=checkbox][data-csstgt]')
-            .forEach(function(e){
-                const tgt = E(e.dataset.csstgt);
-                const cssClass = e.dataset.cssclass || 'error';
-                e.checked = tgt.classList.contains(cssClass);
-                e.addEventListener('change', function(){
-                    tgt.classList[
-                        this.checked ? 'add' : 'remove'
-                    ](cssClass)
-                }, false);
-            });
-        /* For each checkbox with data-config=X, set up a binding to
-           SF.config[X]. These must be set up AFTER data-csstgt
-           checkboxes so that those two states can be synced properly. */
-        EAll('input[type=checkbox][data-config]')
-            .forEach(function(e){
-                const confVal = !!SF.config[e.dataset.config];
-                if(e.checked !== confVal){
-                    /* Ensure that data-csstgt mappings (if any) get
-                       synced properly. */
-                    e.checked = confVal;
-                    e.dispatchEvent(new Event('change'));
-                }
-                e.addEventListener('change', function(){
-                    SF.config[this.dataset.config] = this.checked;
-                    SF.storeConfig();
-                }, false);
-            });
-        /* For each button with data-cmd=X, map a click handler which
-           calls SF.dbExec(X). */
-        const cmdClick = function(){SF.dbExec(this.dataset.cmd);};
-        EAll('button[data-cmd]').forEach(
-            e => e.addEventListener('click', cmdClick, false)
-        );
-
-        btnInterrupt.addEventListener('click',function(){
-            SF.wMsg('interrupt');
-        });
-
-        /** Initiate a download of the db. */
-        const btnExport = E('#btn-export');
-        const eLoadDb = E('#load-db');
-        const btnLoadDb = E('#btn-load-db');
-        btnLoadDb.addEventListener('click', ()=>eLoadDb.click());
-        /**
-           Enables (if passed true) or disables all UI elements which
-           "might," if timed "just right," interfere with an
-           in-progress db import/export/exec operation.
-        */
-        const enableMutatingElements = function f(enable){
-            if(!f._elems){
-                f._elems = [
-                    /* UI elements to disable while import/export are
-                       running. Normally the export is fast enough
-                       that this won't matter, but we really don't
-                       want to be reading (from outside of sqlite) the
-                       db when the user taps btnShellExec. */
-                    btnShellExec, btnExport, eLoadDb
-                ];
-            }
-            f._elems.forEach( enable
-                              ? (e)=>e.removeAttribute('disabled')
-                              : (e)=>e.setAttribute('disabled','disabled') );
-        };
-        btnExport.addEventListener('click',function(){
-            enableMutatingElements(false);
-            SF.wMsg('db-export');
-        });
-        SF.addMsgHandler('db-export', function(ev){
-            enableMutatingElements(true);
-            ev = ev.data;
-            if(ev.error){
-                SF.echo("Export failed:",ev.error);
-                return;
-            }
-            const blob = new Blob([ev.buffer], {type:"application/x-sqlite3"});
-            const a = document.createElement('a');
-            document.body.appendChild(a);
-            a.href = window.URL.createObjectURL(blob);
-            a.download = ev.filename;
-            a.addEventListener('click',function(){
-                setTimeout(function(){
-                    SF.echo("Exported (possibly auto-downloaded):",ev.filename);
-                    window.URL.revokeObjectURL(a.href);
-                    a.remove();
-                },500);
-            });
-            a.click();
-        });
-        /**
-           Handle load/import of an external db file.
-        */
-        eLoadDb.addEventListener('change',function(){
-            const f = this.files[0];
-            const r = new FileReader();
-            const status = {loaded: 0, total: 0};
-            enableMutatingElements(false);
-            r.addEventListener('loadstart', function(){
-                SF.echo("Loading",f.name,"...");
-            });
-            r.addEventListener('progress', function(ev){
-                SF.echo("Loading progress:",ev.loaded,"of",ev.total,"bytes.");
-            });
-            const that = this;
-            r.addEventListener('load', function(){
-                enableMutatingElements(true);
-                SF.echo("Loaded",f.name+". Opening db...");
-                SF.wMsg('open',{
-                    filename: f.name,
-                    buffer: this.result
-                });
-            });
-            r.addEventListener('error',function(){
-                enableMutatingElements(true);
-                SF.echo("Loading",f.name,"failed for unknown reasons.");
-            });
-            r.addEventListener('abort',function(){
-                enableMutatingElements(true);
-                SF.echo("Cancelled loading of",f.name+".");
-            });
-            r.readAsArrayBuffer(f);
-        });
-
-        EAll('fieldset.collapsible').forEach(function(fs){
-            const btnToggle = E(fs,'legend > .fieldset-toggle'),
-                  content = EAll(fs,':scope > div');
-            btnToggle.addEventListener('click', function(){
-                fs.classList.toggle('collapsed');
-                content.forEach((d)=>d.classList.toggle('hidden'));
-            }, false);
-        });
-
-        /**
-           Given a DOM element, this routine measures its "effective
-           height", which is the bounding top/bottom range of this element
-           and all of its children, recursively. For some DOM structure
-           cases, a parent may have a reported height of 0 even though
-           children have non-0 sizes.
-
-           Returns 0 if !e or if the element really has no height.
-        */
-        const effectiveHeight = function f(e){
-            if(!e) return 0;
-            if(!f.measure){
-                f.measure = function callee(e, depth){
-                    if(!e) return;
-                    const m = e.getBoundingClientRect();
-                    if(0===depth){
-                        callee.top = m.top;
-                        callee.bottom = m.bottom;
-                    }else{
-                        callee.top = m.top ? Math.min(callee.top, m.top) : callee.top;
-                        callee.bottom = Math.max(callee.bottom, m.bottom);
-                    }
-                    Array.prototype.forEach.call(e.children,(e)=>callee(e,depth+1));
-                    if(0===depth){
-                        //console.debug("measure() height:",e.className, callee.top, callee.bottom, (callee.bottom - callee.top));
-                        f.extra += callee.bottom - callee.top;
-                    }
-                    return f.extra;
-                };
-            }
-            f.extra = 0;
-            f.measure(e,0);
-            return f.extra;
-        };
-
-        /**
-           Returns a function, that, as long as it continues to be invoked,
-           will not be triggered. The function will be called after it stops
-           being called for N milliseconds. If `immediate` is passed, call
-           the callback immediately and hinder future invocations until at
-           least the given time has passed.
-
-           If passed only 1 argument, or passed a falsy 2nd argument,
-           the default wait time set in this function's $defaultDelay
-           property is used.
-
-           Source: underscore.js, by way of https://davidwalsh.name/javascript-debounce-function
-        */
-        const debounce = function f(func, wait, immediate) {
-            var timeout;
-            if(!wait) wait = f.$defaultDelay;
-            return function() {
-                const context = this, args = Array.prototype.slice.call(arguments);
-                const later = function() {
-                    timeout = undefined;
-                    if(!immediate) func.apply(context, args);
-                };
-                const callNow = immediate && !timeout;
-                clearTimeout(timeout);
-                timeout = setTimeout(later, wait);
-                if(callNow) func.apply(context, args);
-            };
-        };
-        debounce.$defaultDelay = 500 /*arbitrary*/;
-
-        const ForceResizeKludge = (function(){
-            /* Workaround for Safari mayhem regarding use of vh CSS
-               units....  We cannot use vh units to set the main view
-               size because Safari chokes on that, so we calculate
-               that height here. Larger than ~95% is too big for
-               Firefox on Android, causing the input area to move
-               off-screen. */
-            const appViews = EAll('.app-view');
-            const elemsToCount = [
-                /* Elements which we need to always count in the
-                   visible body size. */
-                E('body > header'),
-                E('body > footer')
-            ];
-            const resized = function f(){
-                if(f.$disabled) return;
-                const wh = window.innerHeight;
-                var ht;
-                var extra = 0;
-                elemsToCount.forEach((e)=>e ? extra += effectiveHeight(e) : false);
-                ht = wh - extra;
-                appViews.forEach(function(e){
-                    e.style.height =
-                        e.style.maxHeight = [
-                            "calc(", (ht>=100 ? ht : 100), "px",
-                            " - 2em"/*fudge value*/,")"
-                            /* ^^^^ hypothetically not needed, but both
-                               Chrome/FF on Linux will force scrollbars on the
-                               body if this value is too small. */
-                        ].join('');
-                });
-            };
-            resized.$disabled = true/*gets deleted when setup is finished*/;
-            window.addEventListener('resize', debounce(resized, 250), false);
-            return resized;
-        })();
-
-        /** Set up a selection list of examples */
-        (function(){
-            const xElem = E('#select-examples');
-            const examples = [
-                {name: "Help", sql:
-`-- ================================================
-- Use ctrl-enter or shift-enter to execute sqlite3
-- shell commands and SQL.
-- If a subset of the text is currently selected,
-- only that part is executed.
-- ================================================
-.help`},
-                {name: "Timer on", sql: ".timer on"},
-                {name: "Setup table T", sql:`.nullvalue NULL
-CREATE TABLE t(a,b);
-INSERT INTO t(a,b) VALUES('abc',123),('def',456),(NULL,789),('ghi',012);
-SELECT * FROM t;`},
-                {name: "Table list", sql: ".tables"},
-                {name: "Box Mode", sql: ".mode box"},
-                {name: "JSON Mode", sql: ".mode json"},
-                {name: "Mandlebrot", sql: `WITH RECURSIVE
-  xaxis(x) AS (VALUES(-2.0) UNION ALL SELECT x+0.05 FROM xaxis WHERE x<1.2),
-  yaxis(y) AS (VALUES(-1.0) UNION ALL SELECT y+0.1 FROM yaxis WHERE y<1.0),
-  m(iter, cx, cy, x, y) AS (
-    SELECT 0, x, y, 0.0, 0.0 FROM xaxis, yaxis
-    UNION ALL
-    SELECT iter+1, cx, cy, x*x-y*y + cx, 2.0*x*y + cy FROM m 
-     WHERE (x*x + y*y) < 4.0 AND iter<28
-  ),
-  m2(iter, cx, cy) AS (
-    SELECT max(iter), cx, cy FROM m GROUP BY cx, cy
-  ),
-  a(t) AS (
-    SELECT group_concat( substr(' .+*#', 1+min(iter/7,4), 1), '') 
-    FROM m2 GROUP BY cy
-  )
-SELECT group_concat(rtrim(t),x'0a') as Mandelbrot FROM a;`}
-            ];
-            const newOpt = function(lbl,val){
-                const o = document.createElement('option');
-                o.value = val;
-                if(!val) o.setAttribute('disabled',true);
-                o.appendChild(document.createTextNode(lbl));
-                xElem.appendChild(o);
-            };
-            newOpt("Examples (replaces input!)");
-            examples.forEach((o)=>newOpt(o.name, o.sql));
-            //xElem.setAttribute('disabled',true);
-            xElem.selectedIndex = 0;
-            xElem.addEventListener('change', function(){
-                taInput.value = '-- ' +
-                    this.selectedOptions[0].innerText +
-                    '\n' + this.value;
-                SF.dbExec(this.value);
-            });
-        })()/* example queries */;
-
-        SF.echo(null/*clear any output generated by the init process*/);
-        if(window.jQuery && window.jQuery.terminal){
-            /* Set up the terminal-style view... */
-            const eTerm = window.jQuery('#view-terminal').empty();
-            SF.jqTerm = eTerm.terminal(SF.dbExec.bind(SF),{
-                prompt: 'sqlite> ',
-                greetings: false /* note that the docs incorrectly call this 'greeting' */
-            });
-            /* Set up a button to toggle the views... */
-            const head = E('header#titlebar');
-            const btnToggleView = document.createElement('button');
-            btnToggleView.appendChild(document.createTextNode("Toggle View"));
-            head.appendChild(btnToggleView);
-            btnToggleView.addEventListener('click',function f(){
-                EAll('.app-view').forEach(e=>e.classList.toggle('hidden'));
-                if(document.body.classList.toggle('terminal-mode')){
-                    ForceResizeKludge();
-                }
-            }, false);
-            btnToggleView.click()/*default to terminal view*/;
-        }
-        SF.dbExec(null/*init the db and output the header*/);
-        SF.echo('This experimental app is provided in the hope that it',
-                'may prove interesting or useful but is not an officially',
-                'supported deliverable of the sqlite project. It is subject to',
-                'any number of changes or outright removal at any time.\n');
-        delete ForceResizeKludge.$disabled;
-        ForceResizeKludge();
-
-        btnShellExec.click();
-    }/*onSFLoaded()*/;
-})();
@@ -1,94 +0,0 @@
-This directory houses a "fiddle"-style application which embeds a
-[Web Assembly (WASM)](https://en.wikipedia.org/wiki/WebAssembly)
-build of the sqlite3 shell app into an HTML page, effectively running
-the shell in a client-side browser.
-
-It requires [emscripten][] and that the build environment be set up for
-emscripten. A mini-HOWTO for setting that up follows...
-
-First, install the Emscripten SDK, as documented
-[here](https://emscripten.org/docs/getting_started/downloads.html) and summarized
-below for Linux environments:
-
-```
-# Clone the emscripten repository:
-$ git clone https://github.com/emscripten-core/emsdk.git
-$ cd emsdk
-
-# Download and install the latest SDK tools:
-$ ./emsdk install latest
-
-# Make the "latest" SDK "active" for the current user:
-$ ./emsdk activate latest
-```
-
-Those parts only need to be run once. The following needs to be run for each
-shell instance which needs the `emcc` compiler:
-
-```
-# Activate PATH and other environment variables in the current terminal:
-$ source ./emsdk_env.sh
-
-$ which emcc
-/path/to/emsdk/upstream/emscripten/emcc
-```
-
-That `env` script needs to be sourced for building this application from the
-top of the sqlite3 build tree:
-
-```
-$ make fiddle
-```
-
-Or:
-
-```
-$ cd ext/fiddle
-$ make
-```
-
-That will generate the fiddle application under
-[ext/fiddle](/dir/ext/fiddle), as `fiddle.html`. That application
-cannot, due to XMLHttpRequest security limitations, run if the HTML
-file is opened directly in the browser (i.e. if it is opened using a
-`file://` URL), so it needs to be served via an HTTP server.  For
-example, using [althttpd][]:
-
-```
-$ cd ext/fiddle
-$ althttpd -debug 1 -jail 0 -port 9090 -root .
-```
-
-Then browse to `http://localhost:9090/fiddle.html`.
-
-Note that when serving this app via [althttpd][], it must be a version
-from 2022-05-17 or newer so that it recognizes the `.wasm` file
-extension and responds with the mimetype `application/wasm`, as the
-WASM loader is pedantic about that detail.
-
-# Known Quirks and Limitations
-
-Some "impedence mismatch" between C and WASM/JavaScript is to be
-expected.
-
-## No I/O
-
-sqlite3 shell commands which require file I/O or pipes are disabled in
-the WASM build.
-
-## `exit()` Triggered from C
-
-When C code calls `exit()`, as happens (for example) when running an
-"unsafe" command when safe mode is active, WASM's connection to the
-sqlite3 shell environment has no sensible choice but to shut down
-because `exit()` leaves it in a state we can no longer recover
-from. The JavaScript-side application attempts to recognize this and
-warn the user that restarting the application is necessary. Currently
-the only way to restart it is to reload the page. Restructuring the
-shell code such that it could be "rebooted" without restarting the
-JS app would require some invasive changes which are not currently
-on any TODO list but have not been entirely ruled out long-term.
-
-
-[emscripten]: https://emscripten.org
-[althttpd]: https://sqlite.org/althttpd
@@ -1,44 +0,0 @@
-/*
-  2022-05-23
-
-  The author disclaims copyright to this source code.  In place of a
-  legal notice, here is a blessing:
-
-  *   May you do good and not evil.
-  *   May you find forgiveness for yourself and forgive others.
-  *   May you share freely, never taking more than you give.
-
-  ***********************************************************************
-
-  This is a JS Worker file for the main sqlite3 api. It loads
-  sqlite3.js, initializes the module, and postMessage()'s a message
-  after the module is initialized:
-
-  {type: 'sqlite3-api', data: 'ready'}
-
-  This seemingly superfluous level of indirection is necessary when
-  loading sqlite3.js via a Worker. Loading sqlite3.js from the main
-  window thread elides the Worker-specific API. Instantiating a worker
-  with new Worker("sqlite.js") will not (cannot) call
-  initSqlite3Module() to initialize the module due to a
-  timing/order-of-operations conflict (and that symbol is not exported
-  in a way that a Worker loading it that way can see it).  Thus JS
-  code wanting to load the sqlite3 Worker-specific API needs to pass
-  _this_ file (or equivalent) to the Worker constructor and then
-  listen for an event in the form shown above in order to know when
-  the module has completed initialization. sqlite3.js will fire a
-  similar event, with data:'loaded' as the final step in its loading
-  process. Whether or not we _really_ need both 'loaded' and 'ready'
-  events is unclear, but they are currently separate events primarily
-  for the sake of clarity in the timing of when it's okay to use the
-  loaded module. At the time the 'loaded' event is fired, it's
-  possible (but unknown and unknowable) that the emscripten-generated
-  module-setup infrastructure still has work to do. Thus it is
-  hypothesized that client code is better off waiting for the 'ready'
-  even before using the API.
-*/
-"use strict";
-importScripts('sqlite3.js');
-initSqlite3Module().then(function(){
-    setTimeout(()=>self.postMessage({type:'sqlite3-api',data:'ready'}), 0);
-});
@@ -1,31 +0,0 @@
-textarea {
-    font-family: monospace;
-}
-header {
-    font-size: 130%;
-    font-weight: bold;
-}
-.hidden, .initially-hidden {
-    position: absolute !important;
-    opacity: 0 !important;
-    pointer-events: none !important;
-    display: none !important;
-}
-fieldset.options {
-    font-size: 75%;
-}
-fieldset > legend {
-    padding: 0 0.5em;
-}
-span.labeled-input {
-    padding: 0.25em;
-    margin: 0.25em 0.5em;
-    border-radius: 0.25em;
-    white-space: nowrap;
-    background: #0002;
-}
-.center { text-align: center; }
-.error {
-    color: red;
-    background-color: yellow;
-}
@@ -1,33 +0,0 @@
-<!doctype html>
-<html lang="en-us">
-  <head>
-    <meta charset="utf-8">
-    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-    <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
-    <link rel="stylesheet" href="emscripten.css"/>
-    <link rel="stylesheet" href="testing.css"/>
-    <title>sqlite3-api.js tests</title>
-    <style></style>
-  </head>
-  <body>
-    <header id='titlebar'><span>sqlite3-api.js tests</span></header>
-    <!-- emscripten bits -->
-    <figure id="module-spinner">
-      <div class="spinner"></div>
-      <div class='center'><strong>Initializing app...</strong></div>
-      <div class='center'>
-        On a slow internet connection this may take a moment.  If this
-        message displays for "a long time", intialization may have
-        failed and the JavaScript console may contain clues as to why.
-      </div>
-    </figure>
-    <div class="emscripten" id="module-status">Downloading...</div>
-    <div class="emscripten">
-      <progress value="0" max="100" id="module-progress" hidden='1'></progress>  
-    </div><!-- /emscripten bits -->
-    <div>Everything on this page happens in the dev console.</div>
-    <script src="sqlite3.js"></script>
-    <script src="SqliteTestUtil.js"></script>
-    <script src="testing1.js"></script>
-  </body>
-</html>
@@ -1,185 +0,0 @@
-/*
-  2022-05-22
-
-  The author disclaims copyright to this source code.  In place of a
-  legal notice, here is a blessing:
-
-  *   May you do good and not evil.
-  *   May you find forgiveness for yourself and forgive others.
-  *   May you share freely, never taking more than you give.
-
-  ***********************************************************************
-
-  A basic test script for sqlite3-api.js. This file must be run in
-  main JS thread and sqlite3.js must have been loaded before it.
-*/
-(function(){
-    const T = self.SqliteTestUtil;
-    const log = console.log.bind(console);
-
-    const assert = function(condition, text) {
-        if (!condition) {
-            throw new Error('Assertion failed' + (text ? ': ' + text : ''));
-        }
-    };
-
-    const test1 = function(db,sqlite3){
-        const api = sqlite3.api;
-        log("Basic sanity tests...");
-        T.assert(db._pDb);
-        let st = db.prepare("select 3 as a");
-        //log("statement =",st);
-        T.assert(st._pStmt)
-            .assert(!st._mayGet)
-            .assert('a' === st.getColumnName(0))
-            .assert(st === db._statements[st._pStmt])
-            .assert(1===st.columnCount)
-            .assert(0===st.parameterCount)
-            .mustThrow(()=>st.bind(1,null))
-            .assert(true===st.step())
-            .assert(3 === st.get(0))
-            .mustThrow(()=>st.get(1))
-            .mustThrow(()=>st.get(0,~api.SQLITE_INTEGER))
-            .assert(3 === st.get(0,api.SQLITE_INTEGER))
-            .assert(3 === st.getInt(0))
-            .assert('3' === st.get(0,api.SQLITE_TEXT))
-            .assert('3' === st.getString(0))
-            .assert(3.0 === st.get(0,api.SQLITE_FLOAT))
-            .assert(3.0 === st.getFloat(0))
-            .assert(st.get(0,api.SQLITE_BLOB) instanceof Uint8Array)
-            .assert(st.getBlob(0) instanceof Uint8Array)
-            .assert(3 === st.get([])[0])
-            .assert(3 === st.get({}).a)
-            .assert(3 === st.getJSON(0))
-            .assert(st._mayGet)
-            .assert(false===st.step())
-            .assert(!st._mayGet)
-        ;
-        let pId = st._pStmt;
-        st.finalize();
-        T.assert(!st._pStmt)
-            .assert(!db._statements[pId]);
-
-        let list = [];
-        db.exec({
-            sql:`CREATE TABLE t(a,b);
-INSERT INTO t(a,b) VALUES(1,2),(3,4),(?,?);`,
-            multi: true,
-            saveSql: list,
-            bind: [5,6]
-        });
-        T.assert(2 === list.length);
-        //log("Exec'd SQL:", list);
-        let counter = 0, colNames = [];
-        list.length = 0;
-        db.exec("SELECT a a, b b FROM t",{
-            rowMode: 'object',
-            resultRows: list,
-            columnNames: colNames,
-            callback: function(row,stmt){
-                ++counter;
-                T.assert(row.a%2 && row.a<6);
-            }
-        });
-        T.assert(2 === colNames.length)
-            .assert('a' === colNames[0])
-            .assert(3 === counter)
-            .assert(3 === list.length);
-        list.length = 0;
-        db.exec("SELECT a a, b b FROM t",{
-            rowMode: 'array',
-            callback: function(row,stmt){
-                ++counter;
-                T.assert(Array.isArray(row))
-                    .assert(0===row[1]%2 && row[1]<7);
-            }
-        });
-        T.assert(6 === counter);
-    };
-
-    const testUDF = function(db){
-        log("Testing UDF...");
-        db.createFunction("foo",function(a,b){return a+b});
-        T.assert(7===db.selectValue("select foo(3,4)")).
-            assert(5===db.selectValue("select foo(3,?)",2)).
-            assert(5===db.selectValue("select foo(?,?)",[1,4])).
-            assert(5===db.selectValue("select foo($a,$b)",{$a:0,$b:5}));
-        db.createFunction("bar", {
-            arity: -1,
-            callback: function(){
-                var rc = 0;
-                for(let i = 0; i < arguments.length; ++i) rc += arguments[i];
-                return rc;
-            }
-        });
-
-        log("Testing DB::selectValue() w/ UDF...");
-        T.assert(0===db.selectValue("select bar()")).
-            assert(1===db.selectValue("select bar(1)")).
-            assert(3===db.selectValue("select bar(1,2)")).
-            assert(-1===db.selectValue("select bar(1,2,-4)"));
-
-        const eqApprox = function(v1,v2,factor=0.05){
-            return v1>=(v2-factor) && v1<=(v2+factor);
-        };
-        
-        T.assert('hi' === db.selectValue("select ?",'hi')).
-            assert(null===db.selectValue("select null")).
-            assert(null === db.selectValue("select ?",null)).
-            assert(null === db.selectValue("select ?",[null])).
-            assert(null === db.selectValue("select $a",{$a:null})).
-            assert(eqApprox(3.1,db.selectValue("select 3.0 + 0.1")))
-        ;
-    };
-
-    const testAttach = function(db){
-        log("Testing ATTACH...");
-        db.exec({
-            sql:[
-                "attach 'foo.db' as foo",
-                "create table foo.bar(a)",
-                "insert into foo.bar(a) values(1),(2),(3)"
-            ].join(';'),
-            multi: true
-        });
-        T.assert(2===db.selectValue('select a from foo.bar where a>1 order by a'));
-        db.exec("detach foo");
-        T.mustThrow(()=>db.exec("select * from foo.bar"));
-    };
-
-    const runTests = function(Module){
-        T.assert(Module._free instanceof Function).
-            assert(Module.allocate instanceof Function).
-            assert(Module.addFunction instanceof Function).
-            assert(Module.removeFunction instanceof Function);
-        const sqlite3 = Module.sqlite3;
-        const api = sqlite3.api;
-        const oo = sqlite3.SQLite3;
-        console.log("Loaded module:",api.sqlite3_libversion(),
-                    api.sqlite3_sourceid());
-        log("Build options:",oo.compileOptionUsed());
-        const db = new oo.DB();
-        try {
-            log("DB:",db.filename);
-            [
-                test1, testUDF, testAttach
-            ].forEach((f)=>{
-                const t = T.counter;
-                f(db, sqlite3);
-                log("Test count:",T.counter - t);
-            });
-        }finally{
-            db.close();
-        }
-        log("Total Test count:",T.counter);
-    };
-
-    initSqlite3Module(self.sqlite3TestModule).then(function(theModule){
-        /** Use a timeout so that we are (hopefully) out from
-            under the module init stack when our setup gets
-            run. Just on principle, not because we _need_ to
-            be. */
-        //console.debug("theModule =",theModule);
-        setTimeout(()=>runTests(theModule), 0);
-    });
-})();
@@ -1,32 +0,0 @@
-<!doctype html>
-<html lang="en-us">
-  <head>
-    <meta charset="utf-8">
-    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-    <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
-    <link rel="stylesheet" href="emscripten.css"/>
-    <link rel="stylesheet" href="testing.css"/>
-    <title>sqlite3-worker.js tests</title>
-    <style></style>
-  </head>
-  <body>
-    <header id='titlebar'><span>sqlite3-worker.js tests</span></header>
-    <!-- emscripten bits -->
-    <figure id="module-spinner">
-      <div class="spinner"></div>
-      <div class='center'><strong>Initializing app...</strong></div>
-      <div class='center'>
-        On a slow internet connection this may take a moment.  If this
-        message displays for "a long time", intialization may have
-        failed and the JavaScript console may contain clues as to why.
-      </div>
-    </figure>
-    <div class="emscripten" id="module-status">Downloading...</div>
-    <div class="emscripten">
-      <progress value="0" max="100" id="module-progress" hidden='1'></progress>  
-    </div><!-- /emscripten bits -->
-    <div>Everything on this page happens in the dev console.</div>
-    <script src="testing-common.js"></script>
-    <script src="testing2.js"></script>
-  </body>
-</html>
@@ -1,235 +0,0 @@
-/*
-  2022-05-22
-
-  The author disclaims copyright to this source code.  In place of a
-  legal notice, here is a blessing:
-
-  *   May you do good and not evil.
-  *   May you find forgiveness for yourself and forgive others.
-  *   May you share freely, never taking more than you give.
-
-  ***********************************************************************
-
-  A basic test script for sqlite3-worker.js.
-*/
-(function(){
-    const T = self.SqliteTestUtil;
-    const SW = new Worker("sqlite3-worker.js");
-    /** Posts a worker message as {type:type, data:data}. */
-    const wMsg = function(type,data){
-        SW.postMessage({type, data});
-        return SW;
-    };
-    const log = console.log.bind(console);
-    const warn = console.warn.bind(console);
-    const error = console.error.bind(console);
-
-    SW.onerror = function(event){
-        error("onerror",event);
-    };
-
-    /**
-       A queue for callbacks which are to be run in response to async
-       DB commands. See the notes in runTests() for why we need
-       this. The event-handling plumbing of this file requires that
-       any DB command which includes a `messageId` property also have
-       a queued callback entry, as the existence of that property in
-       response payloads is how it knows whether or not to shift an
-       entry off of the queue.
-    */
-    const MsgHandlerQueue = {
-        queue: [],
-        id: 0,
-        push: function(type,callback){
-            this.queue.push(callback);
-            return type + '-' + (++this.id);
-        },
-        shift: function(){
-            return this.queue.shift();
-        }
-    };
-
-    const testCount = ()=>log("Total test count:",T.counter);
-
-    const runOneTest = function(eventType, eventData, callback){
-        T.assert(eventData && 'object'===typeof eventData);
-        /* ^^^ that is for the testing and messageId-related code, not
-           a hard requirement of all of the Worker-exposed APIs. */
-        eventData.messageId = MsgHandlerQueue.push(eventType,function(ev){
-            log("runOneTest",eventType,"result",ev.data);
-            if(callback instanceof Function){
-                callback(ev);
-                testCount();
-            }
-        });
-        wMsg(eventType, eventData);
-    };
-
-    /** Methods which map directly to onmessage() event.type keys.
-        They get passed the inbound event.data. */
-    const dbMsgHandler = {
-        open: function(ev){
-            log("open result",ev.data);
-        },
-        exec: function(ev){
-            log("exec result",ev.data);
-        },
-        export: function(ev){
-            log("exec result",ev.data);
-        },
-        error: function(ev){
-            error("ERROR from the worker:",ev.data);
-        },
-        resultRowTest1: function f(ev){
-            if(undefined === f.counter) f.counter = 0;
-            if(ev.data) ++f.counter;
-            //log("exec() result row:",ev.data);
-            T.assert(null===ev.data || 'number' === typeof ev.data.b);
-        }
-    };
-
-    const runTests = function(){
-        const mustNotReach = ()=>{
-            throw new Error("This is not supposed to be reached.");
-        };
-        /**
-           "The problem" now is that the test results are async. We
-           know, however, that the messages posted to the worker will
-           be processed in the order they are passed to it, so we can
-           create a queue of callbacks to handle them. The problem
-           with that approach is that it's not error-handling
-           friendly, in that an error can cause us to bypass a result
-           handler queue entry. We have to perform some extra
-           acrobatics to account for that.
-        */
-        runOneTest('open', {filename:'testing2.sqlite3'}, function(ev){
-            //log("open result",ev);
-            T.assert('testing2.sqlite3'===ev.data.filename)
-                .assert(ev.data.messageId);
-        });
-        runOneTest('exec',{
-            sql: ["create table t(a,b)",
-                  "insert into t(a,b) values(1,2),(3,4),(5,6)"
-                 ].join(';'),
-            multi: true,
-            resultRows: [], columnNames: []
-        }, function(ev){
-            ev = ev.data;
-            T.assert(0===ev.resultRows.length)
-                .assert(0===ev.columnNames.length);
-        });
-        runOneTest('exec',{
-            sql: 'select a a, b b from t order by a',
-            resultRows: [], columnNames: [],
-        }, function(ev){
-            ev = ev.data;
-            T.assert(3===ev.resultRows.length)
-                .assert(1===ev.resultRows[0][0])
-                .assert(6===ev.resultRows[2][1])
-                .assert(2===ev.columnNames.length)
-                .assert('b'===ev.columnNames[1]);
-        });
-        runOneTest('exec',{
-            sql: 'select a a, b b from t order by a',
-            resultRows: [], columnNames: [],
-            rowMode: 'object'
-        }, function(ev){
-            ev = ev.data;
-            T.assert(3===ev.resultRows.length)
-                .assert(1===ev.resultRows[0].a)
-                .assert(6===ev.resultRows[2].b)
-        });
-        runOneTest('exec',{sql:'intentional_error'}, mustNotReach);
-        // Ensure that the message-handler queue survives ^^^ that error...
-        runOneTest('exec',{
-            sql:'select 1',
-            resultRows: [],
-            //rowMode: 'array', // array is the default in the Worker interface
-        }, function(ev){
-            ev = ev.data;
-            T.assert(1 === ev.resultRows.length)
-                .assert(1 === ev.resultRows[0][0]);
-        });
-        runOneTest('exec',{
-            sql: 'select a a, b b from t order by a',
-            callback: 'resultRowTest1',
-            rowMode: 'object'
-        }, function(ev){
-            T.assert(3===dbMsgHandler.resultRowTest1.counter);
-            dbMsgHandler.resultRowTest1.counter = 0;
-        });
-        runOneTest('exec',{sql: 'delete from t where a>3'});
-        runOneTest('exec',{
-            sql: 'select count(a) from t',
-            resultRows: []
-        },function(ev){
-            ev = ev.data;
-            T.assert(1===ev.resultRows.length)
-                .assert(2===ev.resultRows[0][0]);
-        });
-        runOneTest('export',{}, function(ev){
-            ev = ev.data;
-            T.assert('string' === typeof ev.filename)
-                .assert(ev.buffer instanceof Uint8Array)
-                .assert(ev.buffer.length > 1024)
-                .assert('application/x-sqlite3' === ev.mimetype);
-        });
-
-        /***** close() tests must come last. *****/
-        runOneTest('close',{unlink:true},function(ev){
-            ev = ev.data;
-            T.assert('string' === typeof ev.filename);
-        });
-        runOneTest('close',{unlink:true},function(ev){
-            ev = ev.data;
-            T.assert(undefined === ev.filename);
-        });
-    };
-
-    SW.onmessage = function(ev){
-        if(!ev.data || 'object'!==typeof ev.data){
-            warn("Unknown sqlite3-worker message type:",ev);
-            return;
-        }
-        ev = ev.data/*expecting a nested object*/;
-        //log("main window onmessage:",ev);
-        if(ev.data && ev.data.messageId){
-            /* We're expecting a queued-up callback handler. */
-            const f = MsgHandlerQueue.shift();
-            if('error'===ev.type){
-                dbMsgHandler.error(ev);
-                return;
-            }
-            T.assert(f instanceof Function);
-            f(ev);
-            return;
-        }
-        switch(ev.type){
-            case 'sqlite3-api':
-                switch(ev.data){
-                    case 'loaded':
-                        log("Message:",ev); return;
-                    case 'ready':
-                        log("Message:",ev);
-                        self.sqlite3TestModule.setStatus(null);
-                        setTimeout(runTests, 0);
-                        return;
-                    default:
-                        warn("Unknown sqlite3-api message type:",ev);
-                        return;
-                }
-            default:
-                if(dbMsgHandler.hasOwnProperty(ev.type)){
-                    try{dbMsgHandler[ev.type](ev);}
-                    catch(err){
-                        error("Exception while handling db result message",
-                              ev,":",err);
-                    }
-                    return;
-                }
-                warn("Unknown sqlite3-api message type:",ev);
-        }
-    };
-
-    log("Init complete, but async init bits may still be running.");
-})();
@@ -308,26 +308,25 @@
  SQLITE_EXTENSION_INIT1
 #endif

-typedef struct Fts3HashWrapper Fts3HashWrapper;
-struct Fts3HashWrapper {
-  Fts3Hash hash;                  /* Hash table */
-  int nRef;                       /* Number of pointers to this object */
-};
-
 static int fts3EvalNext(Fts3Cursor *pCsr);
 static int fts3EvalStart(Fts3Cursor *pCsr);
 static int fts3TermSegReaderCursor(
    Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **);

+#ifndef SQLITE_AMALGAMATION
+# if defined(SQLITE_DEBUG)
+int sqlite3Fts3Always(int b) { assert( b ); return b; }
+int sqlite3Fts3Never(int b)  { assert( !b ); return b; }
+# endif
+#endif
+
 /*
 ** This variable is set to false when running tests for which the on disk
 ** structures should not be corrupt. Otherwise, true. If it is false, extra
 ** assert() conditions in the fts3 code are activated - conditions that are
 ** only true if it is guaranteed that the fts3 database is not corrupt.
 */
-#ifdef SQLITE_DEBUG
 int sqlite3_fts3_may_be_corrupt = 1;
-#endif

 /* 
 ** Write a 64-bit variable-length integer to memory starting at p[0].
@@ -1178,7 +1177,7 @@ static int fts3InitVtab(
  sqlite3_vtab **ppVTab,          /* Write the resulting vtab structure here */
  char **pzErr                    /* Write any error message here */
 ){
-  Fts3Hash *pHash = &((Fts3HashWrapper*)pAux)->hash;
+  Fts3Hash *pHash = (Fts3Hash *)pAux;
  Fts3Table *p = 0;               /* Pointer to allocated vtab */
  int rc = SQLITE_OK;             /* Return code */
  int i;                          /* Iterator variable */
@@ -1898,7 +1897,7 @@ static int fts3ScanInteriorNode(
  char *zBuffer = 0;              /* Buffer to load terms into */
  i64 nAlloc = 0;                 /* Size of allocated buffer */
  int isFirstTerm = 1;            /* True when processing first term on page */
-  u64 iChild;                     /* Block id of child node to descend to */
+  sqlite3_int64 iChild;           /* Block id of child node to descend to */
  int nBuffer = 0;                /* Total term size */

  /* Skip over the 'height' varint that occurs at the start of every 
@@ -1914,8 +1913,8 @@ static int fts3ScanInteriorNode(
  ** table, then there are always 20 bytes of zeroed padding following the
  ** nNode bytes of content (see sqlite3Fts3ReadBlock() for details).
  */
-  zCsr += sqlite3Fts3GetVarintU(zCsr, &iChild);
-  zCsr += sqlite3Fts3GetVarintU(zCsr, &iChild);
+  zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
+  zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
  if( zCsr>zEnd ){
    return FTS_CORRUPT_VTAB;
  }
@@ -1968,20 +1967,20 @@ static int fts3ScanInteriorNode(
    */
    cmp = memcmp(zTerm, zBuffer, (nBuffer>nTerm ? nTerm : nBuffer));
    if( piFirst && (cmp<0 || (cmp==0 && nBuffer>nTerm)) ){
-      *piFirst = (i64)iChild;
+      *piFirst = iChild;
      piFirst = 0;
    }

    if( piLast && cmp<0 ){
-      *piLast = (i64)iChild;
+      *piLast = iChild;
      piLast = 0;
    }

    iChild++;
  };

-  if( piFirst ) *piFirst = (i64)iChild;
-  if( piLast ) *piLast = (i64)iChild;
+  if( piFirst ) *piFirst = iChild;
+  if( piLast ) *piLast = iChild;

 finish_scan:
  sqlite3_free(zBuffer);
@@ -3587,20 +3586,14 @@ static int fts3SetHasStat(Fts3Table *p){
 */
 static int fts3BeginMethod(sqlite3_vtab *pVtab){
  Fts3Table *p = (Fts3Table*)pVtab;
-  int rc;
  UNUSED_PARAMETER(pVtab);
  assert( p->pSegments==0 );
  assert( p->nPendingData==0 );
  assert( p->inTransaction!=1 );
+  TESTONLY( p->inTransaction = 1 );
+  TESTONLY( p->mxSavepoint = -1; );
  p->nLeafAdd = 0;
-  rc = fts3SetHasStat(p);
-#ifdef SQLITE_DEBUG
-  if( rc==SQLITE_OK ){
-    p->inTransaction = 1;
-    p->mxSavepoint = -1;
-  }
-#endif
-  return rc;
+  return fts3SetHasStat(p);
 }

 /*
@@ -4013,12 +4006,9 @@ static const sqlite3_module fts3Module = {
 ** allocated for the tokenizer hash table.
 */
 static void hashDestroy(void *p){
-  Fts3HashWrapper *pHash = (Fts3HashWrapper *)p;
-  pHash->nRef--;
-  if( pHash->nRef<=0 ){
-    sqlite3Fts3HashClear(&pHash->hash);
-    sqlite3_free(pHash);
-  }
+  Fts3Hash *pHash = (Fts3Hash *)p;
+  sqlite3Fts3HashClear(pHash);
+  sqlite3_free(pHash);
 }

 /*
@@ -4048,7 +4038,7 @@ void sqlite3Fts3IcuTokenizerModule(sqlite3_tokenizer_module const**ppModule);
 */
 int sqlite3Fts3Init(sqlite3 *db){
  int rc = SQLITE_OK;
-  Fts3HashWrapper *pHash = 0;
+  Fts3Hash *pHash = 0;
  const sqlite3_tokenizer_module *pSimple = 0;
  const sqlite3_tokenizer_module *pPorter = 0;
 #ifndef SQLITE_DISABLE_FTS3_UNICODE
@@ -4076,24 +4066,23 @@ int sqlite3Fts3Init(sqlite3 *db){
  sqlite3Fts3PorterTokenizerModule(&pPorter);

  /* Allocate and initialize the hash-table used to store tokenizers. */
-  pHash = sqlite3_malloc(sizeof(Fts3HashWrapper));
+  pHash = sqlite3_malloc(sizeof(Fts3Hash));
  if( !pHash ){
    rc = SQLITE_NOMEM;
  }else{
-    sqlite3Fts3HashInit(&pHash->hash, FTS3_HASH_STRING, 1);
-    pHash->nRef = 0;
+    sqlite3Fts3HashInit(pHash, FTS3_HASH_STRING, 1);
  }

  /* Load the built-in tokenizers into the hash table */
  if( rc==SQLITE_OK ){
-    if( sqlite3Fts3HashInsert(&pHash->hash, "simple", 7, (void *)pSimple)
-     || sqlite3Fts3HashInsert(&pHash->hash, "porter", 7, (void *)pPorter) 
+    if( sqlite3Fts3HashInsert(pHash, "simple", 7, (void *)pSimple)
+     || sqlite3Fts3HashInsert(pHash, "porter", 7, (void *)pPorter) 

 #ifndef SQLITE_DISABLE_FTS3_UNICODE
-     || sqlite3Fts3HashInsert(&pHash->hash, "unicode61", 10, (void *)pUnicode) 
+     || sqlite3Fts3HashInsert(pHash, "unicode61", 10, (void *)pUnicode) 
 #endif
 #ifdef SQLITE_ENABLE_ICU
-     || (pIcu && sqlite3Fts3HashInsert(&pHash->hash, "icu", 4, (void *)pIcu))
+     || (pIcu && sqlite3Fts3HashInsert(pHash, "icu", 4, (void *)pIcu))
 #endif
    ){
      rc = SQLITE_NOMEM;
@@ -4102,7 +4091,7 @@ int sqlite3Fts3Init(sqlite3 *db){

 #ifdef SQLITE_TEST
  if( rc==SQLITE_OK ){
-    rc = sqlite3Fts3ExprInitTestInterface(db, &pHash->hash);
+    rc = sqlite3Fts3ExprInitTestInterface(db, pHash);
  }
 #endif

@@ -4111,26 +4100,23 @@ int sqlite3Fts3Init(sqlite3 *db){
  ** module with sqlite.
  */
  if( SQLITE_OK==rc 
-   && SQLITE_OK==(rc=sqlite3Fts3InitHashTable(db,&pHash->hash,"fts3_tokenizer"))
+   && SQLITE_OK==(rc = sqlite3Fts3InitHashTable(db, pHash, "fts3_tokenizer"))
   && SQLITE_OK==(rc = sqlite3_overload_function(db, "snippet", -1))
   && SQLITE_OK==(rc = sqlite3_overload_function(db, "offsets", 1))
   && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 1))
   && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 2))
   && SQLITE_OK==(rc = sqlite3_overload_function(db, "optimize", 1))
  ){
-    pHash->nRef++;
    rc = sqlite3_create_module_v2(
        db, "fts3", &fts3Module, (void *)pHash, hashDestroy
    );
    if( rc==SQLITE_OK ){
-      pHash->nRef++;
      rc = sqlite3_create_module_v2(
-          db, "fts4", &fts3Module, (void *)pHash, hashDestroy
+          db, "fts4", &fts3Module, (void *)pHash, 0
      );
    }
    if( rc==SQLITE_OK ){
-      pHash->nRef++;
-      rc = sqlite3Fts3InitTok(db, (void *)pHash, hashDestroy);
+      rc = sqlite3Fts3InitTok(db, (void *)pHash);
    }
    return rc;
  }
@@ -4139,7 +4125,7 @@ int sqlite3Fts3Init(sqlite3 *db){
  /* An error has occurred. Delete the hash table and return the error code. */
  assert( rc!=SQLITE_OK );
  if( pHash ){
-    sqlite3Fts3HashClear(&pHash->hash);
+    sqlite3Fts3HashClear(pHash);
    sqlite3_free(pHash);
  }
  return rc;
@@ -4486,7 +4472,7 @@ void sqlite3Fts3DoclistPrev(

  assert( nDoclist>0 );
  assert( *pbEof==0 );
-  assert_fts3_nc( p || *piDocid==0 );
+  assert( p || *piDocid==0 );
  assert( !p || (p>aDoclist && p<&aDoclist[nDoclist]) );

  if( p==0 ){
@@ -5136,15 +5122,16 @@ static int fts3EvalStart(Fts3Cursor *pCsr){
 #ifndef SQLITE_DISABLE_FTS4_DEFERRED
  if( rc==SQLITE_OK && nToken>1 && pTab->bFts4 ){
    Fts3TokenAndCost *aTC;
+    Fts3Expr **apOr;
    aTC = (Fts3TokenAndCost *)sqlite3_malloc64(
        sizeof(Fts3TokenAndCost) * nToken
      + sizeof(Fts3Expr *) * nOr * 2
    );
+    apOr = (Fts3Expr **)&aTC[nToken];

    if( !aTC ){
      rc = SQLITE_NOMEM;
    }else{
-      Fts3Expr **apOr = (Fts3Expr **)&aTC[nToken];
      int ii;
      Fts3TokenAndCost *pTC = aTC;
      Fts3Expr **ppOr = apOr;
@@ -5225,9 +5212,9 @@ static int fts3EvalNearTrim(
  );
  if( res ){
    nNew = (int)(pOut - pPhrase->doclist.pList) - 1;
-    assert_fts3_nc( nNew<=pPhrase->doclist.nList && nNew>0 );
-    if( nNew>=0 && nNew<=pPhrase->doclist.nList ){
+    if( nNew>=0 ){
      assert( pPhrase->doclist.pList[nNew]=='\0' );
+      assert( nNew<=pPhrase->doclist.nList && nNew>0 );
      memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew);
      pPhrase->doclist.nList = nNew;
    }
@@ -5350,8 +5337,8 @@ static void fts3EvalNextRow(
        Fts3Expr *pRight = pExpr->pRight;
        sqlite3_int64 iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid);

-        assert_fts3_nc( pLeft->bStart || pLeft->iDocid==pRight->iDocid );
-        assert_fts3_nc( pRight->bStart || pLeft->iDocid==pRight->iDocid );
+        assert( pLeft->bStart || pLeft->iDocid==pRight->iDocid );
+        assert( pRight->bStart || pLeft->iDocid==pRight->iDocid );

        if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){
          fts3EvalNextRow(pCsr, pLeft, pRc);
@@ -5989,9 +5976,6 @@ int sqlite3Fts3EvalPhrasePoslist(
        if( bEofSave==0 && pNear->iDocid==iDocid ) break;
      }
      assert( rc!=SQLITE_OK || pPhrase->bIncr==0 );
-      if( rc==SQLITE_OK && pNear->bEof!=bEofSave ){
-        rc = FTS_CORRUPT_VTAB;
-      }
    }
    if( bTreeEof ){
      while( rc==SQLITE_OK && !pNear->bEof ){
@@ -134,7 +134,7 @@ SQLITE_EXTENSION_INIT3
 ** is used for assert() conditions that are true only if it can be 
 ** guranteed that the database is not corrupt.
 */
-#ifdef SQLITE_DEBUG
+#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
 extern int sqlite3_fts3_may_be_corrupt;
 # define assert_fts3_nc(x) assert(sqlite3_fts3_may_be_corrupt || (x))
 #else
@@ -151,18 +151,17 @@ extern int sqlite3_fts3_may_be_corrupt;
 ** Macros indicating that conditional expressions are always true or
 ** false.
 */
-#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST)
-# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1
-#endif
-#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS)
-# define ALWAYS(X)      (1)
-# define NEVER(X)       (0)
-#elif !defined(NDEBUG)
-# define ALWAYS(X)      ((X)?1:(assert(0),0))
-# define NEVER(X)       ((X)?(assert(0),1):0)
+#ifdef SQLITE_COVERAGE_TEST
+# define ALWAYS(x) (1)
+# define NEVER(X)  (0)
+#elif defined(SQLITE_DEBUG)
+# define ALWAYS(x) sqlite3Fts3Always((x)!=0)
+# define NEVER(x) sqlite3Fts3Never((x)!=0)
+int sqlite3Fts3Always(int b);
+int sqlite3Fts3Never(int b);
 #else
-# define ALWAYS(X)      (X)
-# define NEVER(X)       (X)
+# define ALWAYS(x) (x)
+# define NEVER(x)  (x)
 #endif

 /*
@@ -621,7 +620,6 @@ void sqlite3Fts3ExprFree(Fts3Expr *);
 int sqlite3Fts3ExprInitTestInterface(sqlite3 *db, Fts3Hash*);
 int sqlite3Fts3InitTerm(sqlite3 *db);
 #endif
-void *sqlite3Fts3MallocZero(i64 nByte);

 int sqlite3Fts3OpenTokenizer(sqlite3_tokenizer *, int, const char *, int,
  sqlite3_tokenizer_cursor **
@@ -641,7 +639,7 @@ int sqlite3Fts3MsrOvfl(Fts3Cursor *, Fts3MultiSegReader *, int *);
 int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr);

 /* fts3_tokenize_vtab.c */
-int sqlite3Fts3InitTok(sqlite3*, Fts3Hash *, void(*xDestroy)(void*));
+int sqlite3Fts3InitTok(sqlite3*, Fts3Hash *);

 /* fts3_unicode2.c (functions generated by parsing unicode text files) */
 #ifndef SQLITE_DISABLE_FTS3_UNICODE
@@ -297,7 +297,6 @@ static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){
    if( fts3auxGrowStatArray(pCsr, 2) ) return SQLITE_NOMEM;
    memset(pCsr->aStat, 0, sizeof(struct Fts3auxColstats) * pCsr->nStat);
    iCol = 0;
-    rc = SQLITE_OK;

    while( i<nDoclist ){
      sqlite3_int64 v = 0;
@@ -341,10 +340,6 @@ static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){
        /* State 3. The integer just read is a column number. */
        default: assert( eState==3 );
          iCol = (int)v;
-          if( iCol<1 ){
-            rc = SQLITE_CORRUPT_VTAB;
-            break;
-          }
          if( fts3auxGrowStatArray(pCsr, iCol+2) ) return SQLITE_NOMEM;
          pCsr->aStat[iCol+1].nDoc++;
          eState = 2;
@@ -353,6 +348,7 @@ static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){
    }

    pCsr->iCol = 0;
+    rc = SQLITE_OK;
  }else{
    pCsr->isEof = 1;
  }
@@ -410,7 +406,6 @@ static int fts3auxFilterMethod(
  sqlite3Fts3SegReaderFinish(&pCsr->csr);
  sqlite3_free((void *)pCsr->filter.zTerm);
  sqlite3_free(pCsr->aStat);
-  sqlite3_free(pCsr->zStop);
  memset(&pCsr->csr, 0, ((u8*)&pCsr[1]) - (u8*)&pCsr->csr);

  pCsr->filter.flags = FTS3_SEGMENT_REQUIRE_POS|FTS3_SEGMENT_IGNORE_EMPTY;
@@ -122,7 +122,7 @@ static int fts3isspace(char c){
 ** zero the memory before returning a pointer to it. If unsuccessful, 
 ** return NULL.
 */
-void *sqlite3Fts3MallocZero(sqlite3_int64 nByte){
+static void *fts3MallocZero(sqlite3_int64 nByte){
  void *pRet = sqlite3_malloc64(nByte);
  if( pRet ) memset(pRet, 0, nByte);
  return pRet;
@@ -203,7 +203,7 @@ static int getNextToken(
    rc = pModule->xNext(pCursor, &zToken, &nToken, &iStart, &iEnd, &iPosition);
    if( rc==SQLITE_OK ){
      nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase) + nToken;
-      pRet = (Fts3Expr *)sqlite3Fts3MallocZero(nByte);
+      pRet = (Fts3Expr *)fts3MallocZero(nByte);
      if( !pRet ){
        rc = SQLITE_NOMEM;
      }else{
@@ -458,7 +458,7 @@ static int getNextNode(
      if( fts3isspace(cNext) 
       || cNext=='"' || cNext=='(' || cNext==')' || cNext==0
      ){
-        pRet = (Fts3Expr *)sqlite3Fts3MallocZero(sizeof(Fts3Expr));
+        pRet = (Fts3Expr *)fts3MallocZero(sizeof(Fts3Expr));
        if( !pRet ){
          return SQLITE_NOMEM;
        }
@@ -493,11 +493,6 @@ static int getNextNode(
    if( *zInput=='(' ){
      int nConsumed = 0;
      pParse->nNest++;
-#if !defined(SQLITE_MAX_EXPR_DEPTH)
-      if( pParse->nNest>1000 ) return SQLITE_ERROR;
-#elif SQLITE_MAX_EXPR_DEPTH>0
-      if( pParse->nNest>SQLITE_MAX_EXPR_DEPTH ) return SQLITE_ERROR;
-#endif
      rc = fts3ExprParse(pParse, zInput+1, nInput-1, ppExpr, &nConsumed);
      *pnConsumed = (int)(zInput - z) + 1 + nConsumed;
      return rc;
@@ -637,7 +632,7 @@ static int fts3ExprParse(
            && p->eType==FTSQUERY_PHRASE && pParse->isNot 
        ){
          /* Create an implicit NOT operator. */
-          Fts3Expr *pNot = sqlite3Fts3MallocZero(sizeof(Fts3Expr));
+          Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr));
          if( !pNot ){
            sqlite3Fts3ExprFree(p);
            rc = SQLITE_NOMEM;
@@ -671,7 +666,7 @@ static int fts3ExprParse(
            /* Insert an implicit AND operator. */
            Fts3Expr *pAnd;
            assert( pRet && pPrev );
-            pAnd = sqlite3Fts3MallocZero(sizeof(Fts3Expr));
+            pAnd = fts3MallocZero(sizeof(Fts3Expr));
            if( !pAnd ){
              sqlite3Fts3ExprFree(p);
              rc = SQLITE_NOMEM;
@@ -17,10 +17,6 @@
 #include <string.h>
 #include <assert.h>

-#ifndef SQLITE_AMALGAMATION
-typedef sqlite3_int64 i64;
-#endif
-
 /*
 ** Characters that may appear in the second argument to matchinfo().
 */
@@ -71,9 +67,9 @@ struct SnippetIter {
 struct SnippetPhrase {
  int nToken;                     /* Number of tokens in phrase */
  char *pList;                    /* Pointer to start of phrase position list */
-  i64 iHead;                      /* Next value in position list */
+  int iHead;                      /* Next value in position list */
  char *pHead;                    /* Position list data following iHead */
-  i64 iTail;                      /* Next value in trailing position list */
+  int iTail;                      /* Next value in trailing position list */
  char *pTail;                    /* Position list data following iTail */
 };

@@ -138,8 +134,9 @@ static MatchinfoBuffer *fts3MIBufferNew(size_t nElem, const char *zMatchinfo){
                           + sizeof(MatchinfoBuffer);
  sqlite3_int64 nStr = strlen(zMatchinfo);

-  pRet = sqlite3Fts3MallocZero(nByte + nStr+1);
+  pRet = sqlite3_malloc64(nByte + nStr+1);
  if( pRet ){
+    memset(pRet, 0, nByte);
    pRet->aMatchinfo[0] = (u8*)(&pRet->aMatchinfo[1]) - (u8*)pRet;
    pRet->aMatchinfo[1+nElem] = pRet->aMatchinfo[0]
                                      + sizeof(u32)*((int)nElem+1);
@@ -237,7 +234,7 @@ void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p){
 ** After it returns, *piPos contains the value of the next element of the
 ** list and *pp is advanced to the following varint.
 */
-static void fts3GetDeltaPosition(char **pp, i64 *piPos){
+static void fts3GetDeltaPosition(char **pp, int *piPos){
  int iVal;
  *pp += fts3GetVarint32(*pp, &iVal);
  *piPos += (iVal-2);
@@ -346,10 +343,10 @@ static int fts3ExprPhraseCount(Fts3Expr *pExpr){
 ** arguments so that it points to the first element with a value greater
 ** than or equal to parameter iNext.
 */
-static void fts3SnippetAdvance(char **ppIter, i64 *piIter, int iNext){
+static void fts3SnippetAdvance(char **ppIter, int *piIter, int iNext){
  char *pIter = *ppIter;
  if( pIter ){
-    i64 iIter = *piIter;
+    int iIter = *piIter;

    while( iIter<iNext ){
      if( 0==(*pIter & 0xFE) ){
@@ -432,7 +429,7 @@ static void fts3SnippetDetails(
    SnippetPhrase *pPhrase = &pIter->aPhrase[i];
    if( pPhrase->pTail ){
      char *pCsr = pPhrase->pTail;
-      i64 iCsr = pPhrase->iTail;
+      int iCsr = pPhrase->iTail;

      while( iCsr<(iStart+pIter->nSnippet) && iCsr>=iStart ){
        int j;
@@ -478,7 +475,7 @@ static int fts3SnippetFindPositions(Fts3Expr *pExpr, int iPhrase, void *ctx){
  rc = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol, &pCsr);
  assert( rc==SQLITE_OK || pCsr==0 );
  if( pCsr ){
-    i64 iFirst = 0;
+    int iFirst = 0;
    pPhrase->pList = pCsr;
    fts3GetDeltaPosition(&pCsr, &iFirst);
    if( iFirst<0 ){
@@ -543,10 +540,11 @@ static int fts3BestSnippet(
  ** the required space using malloc().
  */
  nByte = sizeof(SnippetPhrase) * nList;
-  sIter.aPhrase = (SnippetPhrase *)sqlite3Fts3MallocZero(nByte);
+  sIter.aPhrase = (SnippetPhrase *)sqlite3_malloc64(nByte);
  if( !sIter.aPhrase ){
    return SQLITE_NOMEM;
  }
+  memset(sIter.aPhrase, 0, nByte);

  /* Initialize the contents of the SnippetIter object. Then iterate through
  ** the set of phrases in the expression to populate the aPhrase[] array.
@@ -1110,12 +1108,10 @@ static int fts3MatchinfoLcsCb(
 ** position list for the next column.
 */
 static int fts3LcsIteratorAdvance(LcsIterator *pIter){
-  char *pRead;
+  char *pRead = pIter->pRead;
  sqlite3_int64 iRead;
  int rc = 0;

-  if( NEVER(pIter==0) ) return 1;
-  pRead = pIter->pRead;
  pRead += sqlite3Fts3GetVarint(pRead, &iRead);
  if( iRead==0 || iRead==1 ){
    pRead = 0;
@@ -1149,8 +1145,9 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){
  /* Allocate and populate the array of LcsIterator objects. The array
  ** contains one element for each matchable phrase in the query.
  **/
-  aIter = sqlite3Fts3MallocZero(sizeof(LcsIterator) * pCsr->nPhrase);
+  aIter = sqlite3_malloc64(sizeof(LcsIterator) * pCsr->nPhrase);
  if( !aIter ) return SQLITE_NOMEM;
+  memset(aIter, 0, sizeof(LcsIterator) * pCsr->nPhrase);
  (void)fts3ExprIterate(pCsr->pExpr, fts3MatchinfoLcsCb, (void*)aIter);

  for(i=0; i<pInfo->nPhrase; i++){
@@ -1542,8 +1539,8 @@ typedef struct TermOffsetCtx TermOffsetCtx;

 struct TermOffset {
  char *pList;                    /* Position-list */
-  i64 iPos;                       /* Position just read from pList */
-  i64 iOff;                       /* Offset of this term from read positions */
+  int iPos;                       /* Position just read from pList */
+  int iOff;                       /* Offset of this term from read positions */
 };

 struct TermOffsetCtx {
@@ -1562,7 +1559,7 @@ static int fts3ExprTermOffsetInit(Fts3Expr *pExpr, int iPhrase, void *ctx){
  int nTerm;                      /* Number of tokens in phrase */
  int iTerm;                      /* For looping through nTerm phrase terms */
  char *pList;                    /* Pointer to position list for phrase */
-  i64 iPos = 0;                   /* First position in position-list */
+  int iPos = 0;                   /* First position in position-list */
  int rc;

  UNUSED_PARAMETER(iPhrase);
@@ -1611,7 +1608,7 @@ void sqlite3Fts3Offsets(
  if( rc!=SQLITE_OK ) goto offsets_out;

  /* Allocate the array of TermOffset iterators. */
-  sCtx.aTerm = (TermOffset *)sqlite3Fts3MallocZero(sizeof(TermOffset)*nToken);
+  sCtx.aTerm = (TermOffset *)sqlite3_malloc64(sizeof(TermOffset)*nToken);
  if( 0==sCtx.aTerm ){
    rc = SQLITE_NOMEM;
    goto offsets_out;
@@ -1632,13 +1629,13 @@ void sqlite3Fts3Offsets(
    const char *zDoc;
    int nDoc;

-    /* Initialize the contents of sCtx.aTerm[] for column iCol. This 
-    ** operation may fail if the database contains corrupt records.
+    /* Initialize the contents of sCtx.aTerm[] for column iCol. There is 
+    ** no way that this operation can fail, so the return code from
+    ** fts3ExprIterate() can be discarded.
    */
    sCtx.iCol = iCol;
    sCtx.iTerm = 0;
-    rc = fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx);
-    if( rc!=SQLITE_OK ) goto offsets_out;
+    (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx);

    /* Retreive the text stored in column iCol. If an SQL NULL is stored 
    ** in column iCol, jump immediately to the next iteration of the loop.
@@ -585,7 +585,6 @@ static int SQLITE_TCLAPI fts3_may_be_corrupt(
  int objc,
  Tcl_Obj *CONST objv[]
 ){
-#ifdef SQLITE_DEBUG
  int bOld = sqlite3_fts3_may_be_corrupt;

  if( objc!=2 && objc!=1 ){
@@ -599,7 +598,6 @@ static int SQLITE_TCLAPI fts3_may_be_corrupt(
  }

  Tcl_SetObjResult(interp, Tcl_NewIntObj(bOld));
-#endif
  return TCL_OK;
 }

@@ -420,7 +420,7 @@ static int fts3tokRowidMethod(
 ** Register the fts3tok module with database connection db. Return SQLITE_OK
 ** if successful or an error code if sqlite3_create_module() fails.
 */
-int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash, void(*xDestroy)(void*)){
+int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){
  static const sqlite3_module fts3tok_module = {
     0,                           /* iVersion      */
     fts3tokConnectMethod,        /* xCreate       */
@@ -449,9 +449,7 @@ int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash, void(*xDestroy)(void*)){
  };
  int rc;                         /* Return code */

-  rc = sqlite3_create_module_v2(
-      db, "fts3tokenize", &fts3tok_module, (void*)pHash, xDestroy
-  );
+  rc = sqlite3_create_module(db, "fts3tokenize", &fts3tok_module, (void*)pHash);
  return rc;
 }

@@ -285,7 +285,6 @@ static int unicodeOpen(
  pCsr->aInput = (const unsigned char *)aInput;
  if( aInput==0 ){
    pCsr->nInput = 0;
-    pCsr->aInput = (const unsigned char*)"";
  }else if( nInput<0 ){
    pCsr->nInput = (int)strlen(aInput);
  }else{
@@ -1335,18 +1335,8 @@ static int fts3SegReaderNext(
        char *aCopy;
        PendingList *pList = (PendingList *)fts3HashData(pElem);
        int nCopy = pList->nData+1;
-
-        int nTerm = fts3HashKeysize(pElem);
-        if( (nTerm+1)>pReader->nTermAlloc ){
-          sqlite3_free(pReader->zTerm);
-          pReader->zTerm = (char*)sqlite3_malloc((nTerm+1)*2);
-          if( !pReader->zTerm ) return SQLITE_NOMEM;
-          pReader->nTermAlloc = (nTerm+1)*2;
-        }
-        memcpy(pReader->zTerm, fts3HashKey(pElem), nTerm);
-        pReader->zTerm[nTerm] = '\0';
-        pReader->nTerm = nTerm;
-
+        pReader->zTerm = (char *)fts3HashKey(pElem);
+        pReader->nTerm = fts3HashKeysize(pElem);
        aCopy = (char*)sqlite3_malloc(nCopy);
        if( !aCopy ) return SQLITE_NOMEM;
        memcpy(aCopy, pList->aData, nCopy);
@@ -1599,7 +1589,9 @@ int sqlite3Fts3MsrOvfl(
 */
 void sqlite3Fts3SegReaderFree(Fts3SegReader *pReader){
  if( pReader ){
-    sqlite3_free(pReader->zTerm);
+    if( !fts3SegReaderIsPending(pReader) ){
+      sqlite3_free(pReader->zTerm);
+    }
    if( !fts3SegReaderIsRootOnly(pReader) ){
      sqlite3_free(pReader->aNode);
    }
@@ -1815,7 +1807,7 @@ static int fts3SegReaderCmp(Fts3SegReader *pLhs, Fts3SegReader *pRhs){
  if( rc==0 ){
    rc = pRhs->iIdx - pLhs->iIdx;
  }
-  assert_fts3_nc( rc!=0 );
+  assert( rc!=0 );
  return rc;
 }

@@ -2011,8 +2003,8 @@ static int fts3PrefixCompress(
  int nNext                       /* Size of buffer zNext in bytes */
 ){
  int n;
-  for(n=0; n<nPrev && n<nNext && zPrev[n]==zNext[n]; n++);
-  assert_fts3_nc( n<nNext );
+  UNUSED_PARAMETER(nNext);
+  for(n=0; n<nPrev && zPrev[n]==zNext[n]; n++);
  return n;
 }

@@ -3011,7 +3003,7 @@ int sqlite3Fts3SegReaderStep(

          nByte = sqlite3Fts3VarintLen(iDelta) + (isRequirePos?nList+1:0);

-          rc = fts3GrowSegReaderBuffer(pCsr, nByte+nDoclist+FTS3_NODE_PADDING);
+          rc = fts3GrowSegReaderBuffer(pCsr, nByte+nDoclist);
          if( rc ) return rc;

          if( isFirst ){
@@ -3791,7 +3783,7 @@ static int nodeReaderNext(NodeReader *p){
      return FTS_CORRUPT_VTAB;
    }
    blobGrowBuffer(&p->term, nPrefix+nSuffix, &rc);
-    if( rc==SQLITE_OK && ALWAYS(p->term.a!=0) ){
+    if( rc==SQLITE_OK ){
      memcpy(&p->term.a[nPrefix], &p->aNode[p->iOff], nSuffix);
      p->term.n = nPrefix+nSuffix;
      p->iOff += nSuffix;
@@ -3899,8 +3891,6 @@ static int fts3IncrmergePush(
          pBlk->n += sqlite3Fts3PutVarint(&pBlk->a[pBlk->n], nPrefix);
        }
        pBlk->n += sqlite3Fts3PutVarint(&pBlk->a[pBlk->n], nSuffix);
-        assert( nPrefix+nSuffix<=nTerm );
-        assert( nPrefix>=0 );
        memcpy(&pBlk->a[pBlk->n], &zTerm[nPrefix], nSuffix);
        pBlk->n += nSuffix;

@@ -4023,7 +4013,6 @@ static int fts3IncrmergeAppend(
  pLeaf = &pWriter->aNodeWriter[0];
  nPrefix = fts3PrefixCompress(pLeaf->key.a, pLeaf->key.n, zTerm, nTerm);
  nSuffix = nTerm - nPrefix;
-  if(nSuffix<=0 ) return FTS_CORRUPT_VTAB;

  nSpace  = sqlite3Fts3VarintLen(nPrefix);
  nSpace += sqlite3Fts3VarintLen(nSuffix) + nSuffix;
@@ -4188,11 +4177,7 @@ static int fts3TermCmp(
  int nCmp = MIN(nLhs, nRhs);
  int res;

-  if( nCmp && ALWAYS(zLhs) && ALWAYS(zRhs) ){
-    res = memcmp(zLhs, zRhs, nCmp);
-  }else{
-    res = 0;
-  }
+  res = (nCmp ? memcmp(zLhs, zRhs, nCmp) : 0);
  if( res==0 ) res = nLhs - nRhs;

  return res;
@@ -4350,20 +4335,17 @@ static int fts3IncrmergeLoad(
          while( reader.aNode && rc==SQLITE_OK ) rc = nodeReaderNext(&reader);
          blobGrowBuffer(&pNode->key, reader.term.n, &rc);
          if( rc==SQLITE_OK ){
-            assert_fts3_nc( reader.term.n>0 || reader.aNode==0 );
-            if( reader.term.n>0 ){
-              memcpy(pNode->key.a, reader.term.a, reader.term.n);
-            }
+            memcpy(pNode->key.a, reader.term.a, reader.term.n);
            pNode->key.n = reader.term.n;
            if( i>0 ){
              char *aBlock = 0;
              int nBlock = 0;
              pNode = &pWriter->aNodeWriter[i-1];
              pNode->iBlock = reader.iChild;
-              rc = sqlite3Fts3ReadBlock(p, reader.iChild, &aBlock, &nBlock,0);
+              rc = sqlite3Fts3ReadBlock(p, reader.iChild, &aBlock, &nBlock, 0);
              blobGrowBuffer(&pNode->block, 
                  MAX(nBlock, p->nNodeSize)+FTS3_NODE_PADDING, &rc
-                  );
+              );
              if( rc==SQLITE_OK ){
                memcpy(pNode->block.a, aBlock, nBlock);
                pNode->block.n = nBlock;
@@ -4836,7 +4818,7 @@ static int fts3IncrmergeHintLoad(Fts3Table *p, Blob *pHint){
      if( aHint ){
        blobGrowBuffer(pHint, nHint, &rc);
        if( rc==SQLITE_OK ){
-          if( ALWAYS(pHint->a!=0) ) memcpy(pHint->a, aHint, nHint);
+          memcpy(pHint->a, aHint, nHint);
          pHint->n = nHint;
        }
      }
@@ -0,0 +1,115 @@
+#!/usr/bin/tclsh
+#
+# This script builds a single C code file holding all of FTS3 code.
+# The name of the output file is fts3amal.c.  To build this file,
+# first do:
+#
+#      make target_source
+#
+# The make target above moves all of the source code files into
+# a subdirectory named "tsrc".  (This script expects to find the files
+# there and will not work if they are not found.)
+#
+# After the "tsrc" directory has been created and populated, run
+# this script:
+#
+#      tclsh mkfts3amal.tcl
+#
+# The amalgamated FTS3 code will be written into fts3amal.c
+#
+
+# Open the output file and write a header comment at the beginning
+# of the file.
+#
+set out [open fts3amal.c w]
+set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1]
+puts $out [subst \
+{/******************************************************************************
+** This file is an amalgamation of separate C source files from the SQLite
+** Full Text Search extension 2 (fts3).  By combining all the individual C 
+** code  files into this single large file, the entire code can be compiled 
+** as a one translation unit.  This allows many compilers to do optimizations
+** that would not be possible if the files were compiled separately.  It also
+** makes the code easier to import into other projects.
+**
+** This amalgamation was generated on $today.
+*/}]
+
+# These are the header files used by FTS3.  The first time any of these 
+# files are seen in a #include statement in the C code, include the complete
+# text of the file in-line.  The file only needs to be included once.
+#
+foreach hdr {
+   fts3.h
+   fts3_hash.h
+   fts3_tokenizer.h
+   sqlite3.h
+   sqlite3ext.h
+} {
+  set available_hdr($hdr) 1
+}
+
+# 78 stars used for comment formatting.
+set s78 \
+{*****************************************************************************}
+
+# Insert a comment into the code
+#
+proc section_comment {text} {
+  global out s78
+  set n [string length $text]
+  set nstar [expr {60 - $n}]
+  set stars [string range $s78 0 $nstar]
+  puts $out "/************** $text $stars/"
+}
+
+# Read the source file named $filename and write it into the
+# sqlite3.c output file.  If any #include statements are seen,
+# process them approprately.
+#
+proc copy_file {filename} {
+  global seen_hdr available_hdr out
+  set tail [file tail $filename]
+  section_comment "Begin file $tail"
+  set in [open $filename r]
+  while {![eof $in]} {
+    set line [gets $in]
+    if {[regexp {^#\s*include\s+["<]([^">]+)[">]} $line all hdr]} {
+      if {[info exists available_hdr($hdr)]} {
+        if {$available_hdr($hdr)} {
+          section_comment "Include $hdr in the middle of $tail"
+          copy_file tsrc/$hdr
+          section_comment "Continuing where we left off in $tail"
+        }
+      } elseif {![info exists seen_hdr($hdr)]} {
+        set seen_hdr($hdr) 1
+        puts $out $line
+      }
+    } elseif {[regexp {^#ifdef __cplusplus} $line]} {
+      puts $out "#if 0"
+    } elseif {[regexp {^#line} $line]} {
+      # Skip #line directives.
+    } else {
+      puts $out $line
+    }
+  }
+  close $in
+  section_comment "End of $tail"
+}
+
+
+# Process the source files.  Process files containing commonly
+# used subroutines first in order to help the compiler find
+# inlining opportunities.
+#
+foreach file {
+   fts3.c
+   fts3_hash.c
+   fts3_porter.c
+   fts3_tokenizer.c
+   fts3_tokenizer1.c
+} {
+  copy_file tsrc/$file
+}
+
+close $out
@@ -35,20 +35,8 @@ typedef sqlite3_uint64 u64;
 #endif

 #define testcase(x)
-
-#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST)
-# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1
-#endif
-#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS)
-# define ALWAYS(X)      (1)
-# define NEVER(X)       (0)
-#elif !defined(NDEBUG)
-# define ALWAYS(X)      ((X)?1:(assert(0),0))
-# define NEVER(X)       ((X)?(assert(0),1):0)
-#else
-# define ALWAYS(X)      (X)
-# define NEVER(X)       (X)
-#endif
+#define ALWAYS(x) 1
+#define NEVER(x) 0

 #define MIN(x,y) (((x) < (y)) ? (x) : (y))
 #define MAX(x,y) (((x) > (y)) ? (x) : (y))
@@ -108,7 +96,7 @@ extern int sqlite3_fts5_may_be_corrupt;
 ** A version of memcmp() that does not cause asan errors if one of the pointer
 ** parameters is NULL and the number of bytes to compare is zero.
 */
-#define fts5Memcmp(s1, s2, n) ((n)<=0 ? 0 : memcmp((s1), (s2), (n)))
+#define fts5Memcmp(s1, s2, n) ((n)==0 ? 0 : memcmp((s1), (s2), (n)))

 /* Mark a function parameter as unused, to suppress nuisance compiler
 ** warnings. */
@@ -447,9 +435,6 @@ void sqlite3Fts5IndexCloseReader(Fts5Index*);
 */
 const char *sqlite3Fts5IterTerm(Fts5IndexIter*, int*);
 int sqlite3Fts5IterNextScan(Fts5IndexIter*);
-void *sqlite3Fts5StructureRef(Fts5Index*);
-void sqlite3Fts5StructureRelease(void*);
-int sqlite3Fts5StructureTest(Fts5Index*, void*);


 /*
@@ -66,6 +66,7 @@ void sqlite3Fts5BufferAppendBlob(
  u32 nData, 
  const u8 *pData
 ){
+  assert_nc( *pRc || nData>=0 );
  if( nData ){
    if( fts5BufferGrow(pRc, pBuf, nData) ) return;
    memcpy(&pBuf->p[pBuf->n], pData, nData);
@@ -175,7 +176,7 @@ int sqlite3Fts5PoslistNext64(
    return 1;  
  }else{
    i64 iOff = *piOff;
-    u32 iVal;
+    int iVal;
    fts5FastGetVarint32(a, i, iVal);
    if( iVal<=1 ){
      if( iVal==0 ){
@@ -184,19 +185,15 @@ int sqlite3Fts5PoslistNext64(
      }
      fts5FastGetVarint32(a, i, iVal);
      iOff = ((i64)iVal) << 32;
-      assert( iOff>=0 );
      fts5FastGetVarint32(a, i, iVal);
      if( iVal<2 ){
        /* This is a corrupt record. So stop parsing it here. */
        *piOff = -1;
        return 1;
      }
-      *piOff = iOff + ((iVal-2) & 0x7FFFFFFF);
-    }else{
-      *piOff = (iOff & (i64)0x7FFFFFFF<<32)+((iOff + (iVal-2)) & 0x7FFFFFFF);
    }
+    *piOff = iOff + ((iVal-2) & 0x7FFFFFFF);
    *pi = i;
-    assert_nc( *piOff>=iOff );
    return 0;
  }
 }
@@ -235,16 +232,14 @@ void sqlite3Fts5PoslistSafeAppend(
  i64 *piPrev, 
  i64 iPos
 ){
-  if( iPos>=*piPrev ){
-    static const i64 colmask = ((i64)(0x7FFFFFFF)) << 32;
-    if( (iPos & colmask) != (*piPrev & colmask) ){
-      pBuf->p[pBuf->n++] = 1;
-      pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos>>32));
-      *piPrev = (iPos & colmask);
-    }
-    pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos-*piPrev)+2);
-    *piPrev = iPos;
+  static const i64 colmask = ((i64)(0x7FFFFFFF)) << 32;
+  if( (iPos & colmask) != (*piPrev & colmask) ){
+    pBuf->p[pBuf->n++] = 1;
+    pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos>>32));
+    *piPrev = (iPos & colmask);
  }
+  pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos-*piPrev)+2);
+  *piPrev = iPos;
 }

 int sqlite3Fts5PoslistWriterAppend(
@@ -537,7 +537,7 @@ int sqlite3Fts5ConfigParse(

  nByte = nArg * (sizeof(char*) + sizeof(u8));
  pRet->azCol = (char**)sqlite3Fts5MallocZero(&rc, nByte);
-  pRet->abUnindexed = pRet->azCol ? (u8*)&pRet->azCol[nArg] : 0;
+  pRet->abUnindexed = (u8*)&pRet->azCol[nArg];
  pRet->zDb = sqlite3Fts5Strndup(&rc, azArg[1], -1);
  pRet->zName = sqlite3Fts5Strndup(&rc, azArg[2], -1);
  pRet->bColumnsize = 1;
@@ -562,7 +562,6 @@ int sqlite3Fts5ConfigParse(
    z = fts5ConfigSkipWhitespace(z);
    if( z && *z=='=' ){
      bOption = 1;
-      assert( zOne!=0 );
      z++;
      if( bMustBeCol ) z = 0;
    }
@@ -579,11 +578,7 @@ int sqlite3Fts5ConfigParse(
        rc = SQLITE_ERROR;
      }else{
        if( bOption ){
-          rc = fts5ConfigParseSpecial(pGlobal, pRet, 
-            ALWAYS(zOne)?zOne:"",
-            zTwo?zTwo:"",
-            pzErr
-          );
+          rc = fts5ConfigParseSpecial(pGlobal, pRet, zOne, zTwo?zTwo:"", pzErr);
        }else{
          rc = fts5ConfigParseColumn(pRet, zOne, zTwo, pzErr);
          zOne = 0;
@@ -135,7 +135,6 @@ void sqlite3Fts5ParseError(Fts5Parse *pParse, const char *zFmt, ...){
  va_list ap;
  va_start(ap, zFmt);
  if( pParse->rc==SQLITE_OK ){
-    assert( pParse->zErr==0 );
    pParse->zErr = sqlite3_vmprintf(zFmt, ap);
    pParse->rc = SQLITE_ERROR;
  }
@@ -434,7 +433,6 @@ static i64 fts5ExprSynonymRowid(Fts5ExprTerm *pTerm, int bDesc, int *pbEof){
  int bRetValid = 0;
  Fts5ExprTerm *p;

-  assert( pTerm );
  assert( pTerm->pSynonym );
  assert( bDesc==0 || bDesc==1 );
  for(p=pTerm; p; p=p->pSynonym){
@@ -1502,8 +1500,8 @@ int sqlite3Fts5ExprFirst(Fts5Expr *p, Fts5Index *pIdx, i64 iFirst, int bDesc){
  }

  /* If the iterator is not at a real match, skip forward until it is. */
-  while( pRoot->bNomatch && rc==SQLITE_OK ){
-    assert( pRoot->bEof==0 );
+  while( pRoot->bNomatch ){
+    assert( pRoot->bEof==0 && rc==SQLITE_OK );
    rc = fts5ExprNodeNext(p, pRoot, 0, 0);
  }
  return rc;
@@ -1627,9 +1625,6 @@ Fts5ExprNearset *sqlite3Fts5ParseNearset(
  }else{
    if( pRet->nPhrase>0 ){
      Fts5ExprPhrase *pLast = pRet->apPhrase[pRet->nPhrase-1];
-      assert( pParse!=0 );
-      assert( pParse->apPhrase!=0 );
-      assert( pParse->nPhrase>=2 );
      assert( pLast==pParse->apPhrase[pParse->nPhrase-2] );
      if( pPhrase->nTerm==0 ){
        fts5ExprPhraseFree(pPhrase);
@@ -1878,7 +1873,7 @@ int sqlite3Fts5ExprClonePhrase(
    sCtx.pPhrase = sqlite3Fts5MallocZero(&rc, sizeof(Fts5ExprPhrase));
  }

-  if( rc==SQLITE_OK && ALWAYS(sCtx.pPhrase) ){
+  if( rc==SQLITE_OK ){
    /* All the allocations succeeded. Put the expression object together. */
    pNew->pIndex = pExpr->pIndex;
    pNew->pConfig = pExpr->pConfig;
@@ -2149,8 +2144,9 @@ void sqlite3Fts5ParseSetColset(
 ){
  Fts5Colset *pFree = pColset;
  if( pParse->pConfig->eDetail==FTS5_DETAIL_NONE ){
-    sqlite3Fts5ParseError(pParse, 
-        "fts5: column queries are not supported (detail=none)"
+    pParse->rc = SQLITE_ERROR;
+    pParse->zErr = sqlite3_mprintf(
+      "fts5: column queries are not supported (detail=none)"
    );
  }else{
    fts5ParseSetColset(pParse, pExpr, pColset, &pFree);
@@ -2324,10 +2320,13 @@ Fts5ExprNode *sqlite3Fts5ParseNode(
                || pPhrase->nTerm>1
                || (pPhrase->nTerm>0 && pPhrase->aTerm[0].bFirst)
              ){
-              sqlite3Fts5ParseError(pParse, 
+              assert( pParse->rc==SQLITE_OK );
+              pParse->rc = SQLITE_ERROR;
+              assert( pParse->zErr==0 );
+              pParse->zErr = sqlite3_mprintf(
                  "fts5: %s queries are not supported (detail!=full)", 
                  pNear->nPhrase==1 ? "phrase": "NEAR"
-              );
+                  );
              sqlite3_free(pRet);
              pRet = 0;
            }
@@ -2413,7 +2412,6 @@ Fts5ExprNode *sqlite3Fts5ParseImplicitAnd(
  return pRet;
 }

-#ifdef SQLITE_TEST
 static char *fts5ExprTermPrint(Fts5ExprTerm *pTerm){
  sqlite3_int64 nByte = 0;
  Fts5ExprTerm *p;
@@ -2780,14 +2778,12 @@ static void fts5ExprFold(
    sqlite3_result_int(pCtx, sqlite3Fts5UnicodeFold(iCode, bRemoveDiacritics));
  }
 }
-#endif /* ifdef SQLITE_TEST */

 /*
 ** This is called during initialization to register the fts5_expr() scalar
 ** UDF with the SQLite handle passed as the only argument.
 */
 int sqlite3Fts5ExprInit(Fts5Global *pGlobal, sqlite3 *db){
-#ifdef SQLITE_TEST
  struct Fts5ExprFunc {
    const char *z;
    void (*x)(sqlite3_context*,int,sqlite3_value**);
@@ -2805,10 +2801,6 @@ int sqlite3Fts5ExprInit(Fts5Global *pGlobal, sqlite3 *db){
    struct Fts5ExprFunc *p = &aFunc[i];
    rc = sqlite3_create_function(db, p->z, -1, SQLITE_UTF8, pCtx, p->x, 0, 0);
  }
-#else
-  int rc = SQLITE_OK;
-  UNUSED_PARAM2(pGlobal,db);
-#endif

  /* Avoid warnings indicating that sqlite3Fts5ParserTrace() and
  ** sqlite3Fts5ParserFallback() are unused */
@@ -2859,15 +2851,6 @@ struct Fts5PoslistPopulator {
  int bMiss;
 };

-/*
-** Clear the position lists associated with all phrases in the expression
-** passed as the first argument. Argument bLive is true if the expression
-** might be pointing to a real entry, otherwise it has just been reset.
-**
-** At present this function is only used for detail=col and detail=none
-** fts5 tables. This implies that all phrases must be at most 1 token
-** in size, as phrase matches are not supported without detail=full.
-*/
 Fts5PoslistPopulator *sqlite3Fts5ExprClearPoslists(Fts5Expr *pExpr, int bLive){
  Fts5PoslistPopulator *pRet;
  pRet = sqlite3_malloc64(sizeof(Fts5PoslistPopulator)*pExpr->nPhrase);
@@ -2877,7 +2860,7 @@ Fts5PoslistPopulator *sqlite3Fts5ExprClearPoslists(Fts5Expr *pExpr, int bLive){
    for(i=0; i<pExpr->nPhrase; i++){
      Fts5Buffer *pBuf = &pExpr->apExprPhrase[i]->poslist;
      Fts5ExprNode *pNode = pExpr->apExprPhrase[i]->pNode;
-      assert( pExpr->apExprPhrase[i]->nTerm<=1 );
+      assert( pExpr->apExprPhrase[i]->nTerm==1 );
      if( bLive && 
          (pBuf->n==0 || pNode->iRowid!=pExpr->pRoot->iRowid || pNode->bEof)
      ){
@@ -356,7 +356,7 @@ int sqlite3Fts5HashWrite(
      p->bContent = 1;
    }else{
      /* Append a new column value, if necessary */
-      assert_nc( iCol>=p->iCol );
+      assert( iCol>=p->iCol );
      if( iCol!=p->iCol ){
        if( pHash->eDetail==FTS5_DETAIL_FULL ){
          pPtr[p->nData++] = 0x01;
@@ -22,9 +22,7 @@
 ** assert() conditions in the fts5 code are activated - conditions that are
 ** only true if it is guaranteed that the fts5 database is not corrupt.
 */
-#ifdef SQLITE_DEBUG
 int sqlite3_fts5_may_be_corrupt = 1;
-#endif


 typedef struct Fts5Auxdata Fts5Auxdata;
@@ -804,7 +802,7 @@ static int fts5SorterNext(Fts5Cursor *pCsr){
  rc = sqlite3_step(pSorter->pStmt);
  if( rc==SQLITE_DONE ){
    rc = SQLITE_OK;
-    CsrFlagSet(pCsr, FTS5CSR_EOF|FTS5CSR_REQUIRE_CONTENT);
+    CsrFlagSet(pCsr, FTS5CSR_EOF);
  }else if( rc==SQLITE_ROW ){
    const u8 *a;
    const u8 *aBlob;
@@ -1374,8 +1372,7 @@ static int fts5FilterMethod(
        pTab->pStorage, fts5StmtType(pCsr), &pCsr->pStmt, &pTab->p.base.zErrMsg
    );
    if( rc==SQLITE_OK ){
-      if( pRowidEq!=0 ){
-        assert( pCsr->ePlan==FTS5_PLAN_ROWID );
+      if( pCsr->ePlan==FTS5_PLAN_ROWID ){
        sqlite3_bind_value(pCsr->pStmt, 1, pRowidEq);
      }else{
        sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iFirstRowid);
@@ -1950,15 +1947,13 @@ static int fts5CacheInstArray(Fts5Cursor *pCsr){

        nInst++;
        if( nInst>=pCsr->nInstAlloc ){
-          int nNewSize = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32;
+          pCsr->nInstAlloc = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32;
          aInst = (int*)sqlite3_realloc64(
-              pCsr->aInst, nNewSize*sizeof(int)*3
+              pCsr->aInst, pCsr->nInstAlloc*sizeof(int)*3
              );
          if( aInst ){
            pCsr->aInst = aInst;
-            pCsr->nInstAlloc = nNewSize;
          }else{
-            nInst--;
            rc = SQLITE_NOMEM;
            break;
          }
@@ -2182,8 +2177,7 @@ static int fts5ApiPhraseFirst(
  int n;
  int rc = fts5CsrPoslist(pCsr, iPhrase, &pIter->a, &n);
  if( rc==SQLITE_OK ){
-    assert( pIter->a || n==0 );
-    pIter->b = (pIter->a ? &pIter->a[n] : 0);
+    pIter->b = &pIter->a[n];
    *piCol = 0;
    *piOff = 0;
    fts5ApiPhraseNext(pCtx, pIter, piCol, piOff);
@@ -2242,8 +2236,7 @@ static int fts5ApiPhraseFirstColumn(
      rc = sqlite3Fts5ExprPhraseCollist(pCsr->pExpr, iPhrase, &pIter->a, &n);
    }
    if( rc==SQLITE_OK ){
-      assert( pIter->a || n==0 );
-      pIter->b = (pIter->a ? &pIter->a[n] : 0);
+      pIter->b = &pIter->a[n];
      *piCol = 0;
      fts5ApiPhraseNextColumn(pCtx, pIter, piCol);
    }
@@ -2251,8 +2244,7 @@ static int fts5ApiPhraseFirstColumn(
    int n;
    rc = fts5CsrPoslist(pCsr, iPhrase, &pIter->a, &n);
    if( rc==SQLITE_OK ){
-      assert( pIter->a || n==0 );
-      pIter->b = (pIter->a ? &pIter->a[n] : 0);
+      pIter->b = &pIter->a[n];
      if( n<=0 ){
        *piCol = -1;
      }else if( pIter->a[0]==0x01 ){
@@ -2730,7 +2722,7 @@ int sqlite3Fts5GetTokenizer(
    *pzErr = sqlite3_mprintf("no such tokenizer: %s", azArg[0]);
  }else{
    rc = pMod->x.xCreate(
-        pMod->pUserData, (azArg?&azArg[1]:0), (nArg?nArg-1:0), &pConfig->pTok
+        pMod->pUserData, &azArg[1], (nArg?nArg-1:0), &pConfig->pTok
    );
    pConfig->pTokApi = &pMod->x;
    if( rc!=SQLITE_OK ){
@@ -417,16 +417,12 @@ static int fts5StorageDeleteFromIndex(
    if( pConfig->abUnindexed[iCol-1]==0 ){
      const char *zText;
      int nText;
-      assert( pSeek==0 || apVal==0 );
-      assert( pSeek!=0 || apVal!=0 );
      if( pSeek ){
        zText = (const char*)sqlite3_column_text(pSeek, iCol);
        nText = sqlite3_column_bytes(pSeek, iCol);
-      }else if( ALWAYS(apVal) ){
+      }else{
        zText = (const char*)sqlite3_value_text(apVal[iCol-1]);
        nText = sqlite3_value_bytes(apVal[iCol-1]);
-      }else{
-        continue;
      }
      ctx.szCol = 0;
      rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, 
@@ -1062,9 +1058,8 @@ int sqlite3Fts5StorageDocsize(Fts5Storage *p, i64 iRowid, int *aCol){

  assert( p->pConfig->bColumnsize );
  rc = fts5StorageGetStmt(p, FTS5_STMT_LOOKUP_DOCSIZE, &pLookup, 0);
-  if( pLookup ){
+  if( rc==SQLITE_OK ){
    int bCorrupt = 1;
-    assert( rc==SQLITE_OK );
    sqlite3_bind_int64(pLookup, 1, iRowid);
    if( SQLITE_ROW==sqlite3_step(pLookup) ){
      const u8 *aBlob = sqlite3_column_blob(pLookup, 0);
@@ -1077,8 +1072,6 @@ int sqlite3Fts5StorageDocsize(Fts5Storage *p, i64 iRowid, int *aCol){
    if( bCorrupt && rc==SQLITE_OK ){
      rc = FTS5_CORRUPT;
    }
-  }else{
-    assert( rc!=SQLITE_OK );
  }

  return rc;
@@ -29,9 +29,7 @@
 #include <string.h>
 #include <assert.h>

-#ifdef SQLITE_DEBUG
 extern int sqlite3_fts5_may_be_corrupt;
-#endif
 extern int sqlite3Fts5TestRegisterMatchinfo(sqlite3*);
 extern int sqlite3Fts5TestRegisterTok(sqlite3*, fts5_api*);

@@ -1013,7 +1011,6 @@ static int SQLITE_TCLAPI f5tMayBeCorrupt(
  int objc,
  Tcl_Obj *CONST objv[]
 ){
-#ifdef SQLITE_DEBUG
  int bOld = sqlite3_fts5_may_be_corrupt;

  if( objc!=2 && objc!=1 ){
@@ -1027,7 +1024,6 @@ static int SQLITE_TCLAPI f5tMayBeCorrupt(
  }

  Tcl_SetObjResult(interp, Tcl_NewIntObj(bOld));
-#endif
  return TCL_OK;
 }

@@ -211,7 +211,7 @@ static int fts5tokConnectMethod(

    rc = pApi->xFindTokenizer(pApi, zModule, &pTokCtx, &pTab->tok);
    if( rc==SQLITE_OK ){
-      const char **azArg = (nDequote>1 ? (const char **)&azDequote[1] : 0);
+      const char **azArg = (const char **)&azDequote[1];
      int nArg = nDequote>0 ? nDequote-1 : 0;
      rc = pTab->tok.xCreate(pTokCtx, azArg, nArg, &pTab->pTok);
    }
@@ -60,7 +60,6 @@ struct Fts5VocabCursor {

  int bEof;                       /* True if this cursor is at EOF */
  Fts5IndexIter *pIter;           /* Term/rowid iterator object */
-  void *pStruct;                  /* From sqlite3Fts5StructureRef() */

  int nLeTerm;                    /* Size of zLeTerm in bytes */
  char *zLeTerm;                  /* (term <= $zLeTerm) paramater, or NULL */
@@ -374,7 +373,7 @@ static int fts5VocabOpenMethod(
  }

  if( rc==SQLITE_OK ){
-    i64 nByte = pFts5->pConfig->nCol * sizeof(i64)*2 + sizeof(Fts5VocabCursor);
+    int nByte = pFts5->pConfig->nCol * sizeof(i64)*2 + sizeof(Fts5VocabCursor);
    pCsr = (Fts5VocabCursor*)sqlite3Fts5MallocZero(&rc, nByte);
  }

@@ -394,8 +393,6 @@ static int fts5VocabOpenMethod(
 static void fts5VocabResetCursor(Fts5VocabCursor *pCsr){
  pCsr->rowid = 0;
  sqlite3Fts5IterClose(pCsr->pIter);
-  sqlite3Fts5StructureRelease(pCsr->pStruct);
-  pCsr->pStruct = 0;
  pCsr->pIter = 0;
  sqlite3_free(pCsr->zLeTerm);
  pCsr->nLeTerm = -1;
@@ -473,11 +470,9 @@ static int fts5VocabInstanceNext(Fts5VocabCursor *pCsr){
 static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){
  Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor;
  Fts5VocabTable *pTab = (Fts5VocabTable*)pCursor->pVtab;
+  int rc = SQLITE_OK;
  int nCol = pCsr->pFts5->pConfig->nCol;
-  int rc;

-  rc = sqlite3Fts5StructureTest(pCsr->pFts5->pIndex, pCsr->pStruct);
-  if( rc!=SQLITE_OK ) return rc;
  pCsr->rowid++;

  if( pTab->eType==FTS5_VOCAB_INSTANCE ){
@@ -651,9 +646,6 @@ static int fts5VocabFilterMethod(
  if( rc==SQLITE_OK ){
    Fts5Index *pIndex = pCsr->pFts5->pIndex;
    rc = sqlite3Fts5IndexQuery(pIndex, zTerm, nTerm, f, 0, &pCsr->pIter);
-    if( rc==SQLITE_OK ){
-      pCsr->pStruct = sqlite3Fts5StructureRef(pIndex);
-    }
  }
  if( rc==SQLITE_OK && eType==FTS5_VOCAB_INSTANCE ){
    rc = fts5VocabInstanceNewTerm(pCsr);
@@ -165,7 +165,7 @@ do_execsql_test 4.0 {
 }

 do_execsql_test 5.0 {
-  CREATE VIRTUAL TABLE p1 USING fts5(a, b, detail=%DETAIL%);
+  CREATE VIRTUAL TABLE p1 USING fts5(a, b);
  INSERT INTO p1 VALUES(
    'x a a a a a a a a a a',
    'a a a a a a a a a a a a a a a a a a a x'
@@ -184,12 +184,6 @@ do_execsql_test 5.3 {
 do_execsql_test 5.4 {
  SELECT snippet(p1, 0, '[', NULL, '...', 6) FROM p1('x');
 } {{[x a a a a a...}}
-do_execsql_test 5.5 {
-  SELECT snippet(p1, 0, '[', NULL, '...', 6) FROM p1('x OR ""');
-} {{[x a a a a a...}}
-do_execsql_test 5.6 {
-  SELECT snippet(p1, 0, '[', NULL, '...', 6) FROM p1('x OR ' || x'DB');
-} {{[x a a a a a...}}

 } ;# foreach_detail_mode 

@@ -29,8 +29,6 @@ do_execsql_test 1.0 {
  INSERT INTO ttt SELECT a||a, b||b FROM ttt;   
 }

-expr srand(1)
-
 proc mutate {blob i} {
  set o [expr {$i % [string length $blob]}]
  set a [string range $blob 0 $o-1]
@@ -1,798 +0,0 @@
-# 2015 Apr 24
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-# This file tests that FTS5 handles corrupt databases (i.e. internal
-# inconsistencies in the backing tables) correctly. In this case 
-# "correctly" means without crashing.
-#
-
-source [file join [file dirname [info script]] fts5_common.tcl]
-set testprefix fts5corrupt3
-
-# If SQLITE_ENABLE_FTS5 is defined, omit this file.
-ifcapable !fts5 {
-  finish_test
-  return
-}
-sqlite3_fts5_may_be_corrupt 1
-database_may_be_corrupt
-
-#-------------------------------------------------------------------------
-# dbsqlfuzz crash-0f47112aa7520cf08c6a835a88fdff8c2a32a188
-#
-reset_db
-do_test 1.0 {
-  sqlite3 db {}
-  db deserialize [decode_hexdb {
-.open --hexdb
-| size 24576 pagesize 4096 filename crash-0f47112aa7520c.db
-| page 1 offset 0
-|      0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00   SQLite format 3.
-|     16: 10 00 01 01 00 40 20 20 00 00 00 00 00 00 00 00   .....@  ........
-|     96: 00 00 00 00 0d 00 00 00 06 0e 0f 00 0f aa 0f 53   ...............S
-|    112: 0e e8 0e 8b 0e 33 0e 0f 00 00 00 00 00 00 00 00   .....3..........
-|   3584: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 22   ................
-|   3600: 06 06 17 11 11 01 31 74 61 62 6c 65 62 62 62 62   ......1tablebbbb
-|   3616: 06 43 52 45 41 54 45 20 54 41 42 4c 45 20 62 62   .CREATE TABLE bb
-|   3632: 28 61 29 56 05 06 17 1f 1f 01 7d 74 61 62 6c 65   (a)V.......table
-|   3648: 74 31 5f 63 6f 6e 66 69 67 74 31 5f 63 6f 6e 66   t1_configt1_conf
-|   3664: 69 67 05 43 52 45 41 54 45 20 54 41 42 4c 45 20   ig.CREATE TABLE 
-|   3680: 27 74 31 5f 63 6f 6e 66 69 67 27 28 6b 20 50 52   't1_config'(k PR
-|   3696: 49 4d 41 52 59 20 4b 45 59 2c 20 76 29 20 57 49   IMARY KEY, v) WI
-|   3712: 54 48 4f 55 54 20 52 4f 57 49 44 5b 04 07 17 21   THOUT ROWID[...!
-|   3728: 21 01 81 01 74 61 62 6c 65 74 31 5f 64 6f 63 73   !...tablet1_docs
-|   3744: 69 7a 65 74 31 5f 64 6f 63 73 69 7a 65 04 43 52   izet1_docsize.CR
-|   3760: 45 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 64   EATE TABLE 't1_d
-|   3776: 6f 63 73 69 7a 65 27 28 69 64 20 49 4e 54 45 47   ocsize'(id INTEG
-|   3792: 45 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20   ER PRIMARY KEY, 
-|   3808: 73 7a 20 42 4c 4f 42 29 69 03 07 17 19 19 01 81   sz BLOB)i.......
-|   3824: 2d 74 61 62 6c 65 74 31 5f 69 64 78 74 31 5f 69   -tablet1_idxt1_i
-|   3840: 64 78 03 43 52 45 41 54 45 20 54 41 42 4c 45 20   dx.CREATE TABLE 
-|   3856: 27 74 31 5f 69 64 78 27 28 73 65 67 69 64 2c 20   't1_idx'(segid, 
-|   3872: 74 65 72 6d 2c 20 70 67 6e 6f 2c 20 50 52 49 4d   term, pgno, PRIM
-|   3888: 41 52 59 20 4b 45 59 28 73 65 67 69 64 2c 20 74   ARY KEY(segid, t
-|   3904: 65 72 6d 29 29 20 57 49 54 48 4f 55 54 20 52 4f   erm)) WITHOUT RO
-|   3920: 57 49 44 55 02 07 17 1b 1b 01 81 01 74 61 62 6c   WIDU........tabl
-|   3936: 65 74 31 5f 64 61 74 61 74 31 5f 64 61 74 61 02   et1_datat1_data.
-|   3952: 43 52 45 41 54 45 20 54 41 42 4c 45 20 27 74 31   CREATE TABLE 't1
-|   3968: 5f 64 61 74 61 27 28 69 64 20 49 4e 54 45 47 45   _data'(id INTEGE
-|   3984: 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 62   R PRIMARY KEY, b
-|   4000: 6c 6f 63 6b 20 42 4c 4f 42 29 54 01 07 17 11 11   lock BLOB)T.....
-|   4016: 08 81 15 74 61 62 6c 65 74 31 74 31 43 52 45 41   ...tablet1t1CREA
-|   4032: 54 45 20 56 49 52 54 55 41 4c 20 54 41 42 4c 45   TE VIRTUAL TABLE
-|   4048: 20 74 31 20 55 53 49 4e 47 20 66 74 73 35 28 61    t1 USING fts5(a
-|   4064: 2c 62 2c 70 72 65 66 69 78 3d 22 31 2c 32 2c 33   ,b,prefix=.1,2,3
-|   4080: 2c 34 22 2c 20 63 6f 6e 74 65 6e 74 3d 22 22 29   ,4., content=..)
-| page 2 offset 4096
-|      0: 0d 0b 6a 00 37 09 4c 02 0f e7 09 4c 0f c6 0f a4   ..j.7.L....L....
-|     16: 0f 88 0f 6d 0f 4b 0f 2c 0f 0e 0e ec 0e cd 0e ad   ...m.K.,........
-|     32: 0e 8e 0e 6c 0e 4b 0e 29 0e 08 0d e6 0d c4 0d b5   ...l.K.)........
-|     48: 0d 97 0d 76 0d 54 0d 31 0d 15 0c f3 0c d3 0c b5   ...v.T.1........
-|     64: 0c 95 0c 73 0c 54 0c 32 0c 10 0b ee 0b cc 0b b0   ...s.T.2........
-|     80: 0b 8d 0b 7e 0b 48 0b 2e 0b 0b 0a ef 00 00 00 00   ...~.H..........
-|   2368: 00 00 00 00 00 00 00 00 00 00 00 00 15 0a 03 00   ................
-|   2384: 30 00 00 00 01 01 03 35 00 03 01 11 12 02 01 12   0......5........
-|   2400: 03 01 11 1c 8c 80 80 80 80 10 03 00 3e 00 00 00   ............>...
-|   2416: 17 01 05 05 34 74 61 62 6c 03 02 03 01 04 77 68   ....4tabl.....wh
-|   2432: 65 72 03 02 06 09 1b 8c 80 80 80 80 0f 03 00 3c   er.............<
-|   2448: 00 00 00 16 05 34 66 74 73 34 03 02 02 01 04 6e   .....4fts4.....n
-|   2464: 75 6d 62 03 06 01 04 09 1b 8c 80 80 80 80 0e 03   umb.............
-|   2480: 00 3c 00 00 00 16 04 33 74 68 65 03 06 01 01 04   .<.....3the.....
-|   2496: 01 03 77 68 65 03 02 04 04 0a 1b 8c 80 80 80 80   ..whe...........
-|   2512: 0d 03 00 3c 00 00 00 16 04 33 6e 75 6d 03 06 01   ...<.....3num...
-|   2528: 01 05 01 03 74 61 62 03 02 03 04 0a 19 8c 80 80   ....tab.........
-|   2544: 80 80 0c 03 00 38 00 00 00 14 03 32 77 68 03 02   .....8.....2wh..
-|   2560: 04 00 04 33 66 74 73 03 02 02 04 07 18 8c 80 80   ...3fts.........
-|   2576: 80 80 0b 03 00 36 00 00 00 13 03 32 74 61 03 02   .....6.....2ta..
-|   2592: 03 02 01 68 03 06 01 01 04 04 07 1b 8c 80 80 80   ...h............
-|   2608: 80 0a 03 00 3c 00 00 00 16 03 32 6e 75 03 06 01   ....<.....2nu...
-|   2624: 01 05 01 02 6f 66 03 06 01 01 06 04 09 19 8c 80   ....of..........
-|   2640: 80 80 80 09 03 00 38 00 00 00 14 03 32 66 74 03   ......8.....2ft.
-|   2656: 02 02 01 02 69 73 03 06 01 01 03 04 07 18 8c 80   ....is..........
-|   2672: 80 80 80 08 03 00 36 00 00 00 13 02 31 74 03 08   ......6.....1t..
-|   2688: 03 01 01 04 01 01 77 03 02 04 04 09 1a 8c 80 80   ......w.........
-|   2704: 80 80 07 03 00 3a 00 00 00 15 02 31 6e 03 08 01   .....:.....1n...
-|   2720: 01 02 05 01 00 6f 03 06 01 01 06 04 09 18 8c 80   .....o..........
-|   2736: 80 80 80 06 03 00 36 00 00 00 03 04 02 31 66 03   ......6......1f.
-|   2752: 02 02 01 01 69 03 06 01 01 03 04 f6 1c 8c 80 80   ....i...........
-|   2768: 80 80 05 03 00 3e 00 00 00 17 04 30 74 68 65 03   .....>.....0the.
-|   2784: f6 01 01 04 01 05 77 68 65 72 65 03 02 04 0a 15   ......where.....
-|   2800: 8c 80 80 80 80 04 03 00 30 00 00 00 11 01 01 06   ........0.......
-|   2816: 06 30 74 61 62 6c 65 0f 42 03 07 1c 8c 81 80 80   .0table.B.......
-|   2832: 80 03 03 00 3e 00 00 00 17 07 30 6e 75 6d 62 65   ....>.....0numbe
-|   2848: 72 03 06 01 01 05 01 02 6f 66 03 06 04 0d 13 8c   r.......of......
-|   2864: 80 80 80 80 02 03 00 2c 00 00 00 0f 01 01 03 02   .......,........
-|   2880: 30 6e 03 06 01 01 02 07 1b 8c 80 80 80 80 01 03   0n..............
-|   2896: 00 3c 00 00 00 16 08 30 66 74 73 34 61 75 78 03   .<.....0fts4aux.
-|   2912: 02 02 01 02 69 73 03 06 04 0c 00 00 00 14 2a 00   ....is........*.
-|   2928: 00 00 01 01 02 24 00 02 01 01 12 02 01 12 08 88   .....$..........
-|   2944: 80 80 80 80 12 03 00 16 00 00 00 05 02 1c 88 80   ................
-|   2960: 80 80 80 11 03 00 3e 00 00 00 17 05 34 72 6f 77   ......>.....4row
-|   2976: 73 02 06 01 01 05 01 04 74 68 65 72 02 02 04 0b   s.......ther....
-|   2992: 15 88 80 80 80 80 10 03 00 30 00 00 00 11 02 01   .........0......
-|   3008: 01 07 05 34 62 65 74 77 02 02 04 08 1b 88 80 80   ...4betw........
-|   3024: 80 80 0f 03 00 3c 00 00 00 16 04 04 33 72 6f 77   .....<......3row
-|   3040: 02 06 01 01 05 01 03 74 68 65 02 08 05 0a 1b 88   .......the......
-|   3056: 80 80 80 80 0e 03 00 3c 00 00 00 16 01 01 02 04   .......<........
-|   3072: 33 61 72 65 02 02 03 01 03 62 65 74 02 02 07 08   3are.....bet....
-|   3088: 1b 88 80 80 80 80 0d 03 00 3c 00 00 00 16 13 32   .........<.....2
-|   3104: 74 68 02 08 02 01 01 07 00 04 33 61 6e 64 02 06   th........3and..
-|   3120: 04 0a 1b 88 80 80 80 80 0c 03 00 3c 00 00 00 16   ...........<....
-|   3136: 03 32 69 6e 02 06 01 01 06 01 02 72 6f 02 06 01   .2in.......ro...
-|   3152: 01 05 04 09 18 88 80 80 80 80 0b 03 00 36 00 00   .............6..
-|   3168: 00 13 02 03 32 61 72 02 02 03 01 02 62 65 02 02   ....2ar.....be..
-|   3184: 04 05 07 1b 88 80 80 80 80 0a 03 00 3c 00 9e 00   ............<...
-|   3200: 16 02 31 74 02 08 02 01 01 07 00 03 32 61 6e 02   ..1t........2an.
-|   3216: 06 01 01 04 09 19 88 80 80 80 80 09 03 00 38 00   ..............8.
-|   3232: 00 00 14 02 31 6e 02 06 01 01 03 01 01 72 02 06   ....1n.......r..
-|   3248: 01 01 05 04 08 17 88 80 80 80 80 08 03 00 34 00   ..............4.
-|   3264: 00 00 12 02 31 62 02 02 04 01 01 69 02 06 01 01   ....1b.....i....
-|   3280: 06 04 06 19 88 80 80 80 80 07 03 00 38 00 00 00   ............8...
-|   3296: 14 04 02 31 32 02 02 05 01 01 61 02 08 03 01 01   ...12.....a.....
-|   3312: 02 05 06 1b 88 80 80 80 80 06 03 00 3c 00 00 00   ............<...
-|   3328: 16 06 30 74 68 65 72 65 02 02 02 00 02 31 31 02   ..0there.....11.
-|   3344: 06 01 01 04 0a 15 88 80 80 80 80 05 03 00 30 00   ..............0.
-|   3360: 00 00 11 01 01 05 04 30 74 68 65 02 06 01 01 07   .......0the.....
-|   3376: 07 1c 88 80 80 80 80 04 03 00 3e 00 00 00 17 01   ..........>.....
-|   3392: 01 06 02 30 6e 02 06 01 01 03 01 04 72 6f 77 73   ...0n.......rows
-|   3408: 02 06 07 08 1b 88 80 80 80 80 03 03 00 3c 00 00   .............<..
-|   3424: 00 16 08 30 62 65 74 77 65 65 6e 02 02 04 01 02   ...0between.....
-|   3440: 69 6e 02 06 04 0c 1a 88 80 80 80 80 02 03 00 3a   in.............:
-|   3456: 00 00 00 15 04 30 61 6e 64 02 06 01 01 02 02 02   .....0and.......
-|   3472: 72 65 02 02 03 04 0a 17 88 80 80 80 80 01 03 00   re..............
-|   3488: 34 00 00 00 12 02 30 31 02 06 01 01 04 01 01 32   4.....01.......2
-|   3504: 02 02 05 04 08 08 84 80 80 80 80 12 03 00 16 00   ................
-|   3520: 00 00 05 04 1b 84 80 80 80 80 11 03 00 3c 00 00   .............<..
-|   3536: 00 16 05 34 74 61 62 6c 01 06 01 01 05 02 03 65   ...4tabl.......e
-|   3552: 72 6d 01 02 04 0b 1b 84 80 80 80 80 10 03 00 3c   rm.............<
-|   3568: 00 00 00 16 05 34 65 61 63 68 01 02 03 01 04 70   .....4each.....p
-|   3584: 72 65 73 01 02 05 04 08 1a 84 80 80 80 80 0f 03   res.............
-|   3600: 00 3a 00 00 00 15 04 33 74 65 72 01 02 04 02 02   .:.....3ter.....
-|   3616: 68 65 01 06 01 01 03 04 08 1b 84 80 80 80 80 0e   he..............
-|   3632: 03 00 3c 00 00 00 16 04 33 80 72 65 01 02 05 01   ..<.....3.re....
-|   3648: 03 74 61 62 01 06 01 01 05 04 08 1a 84 80 80 80   .tab............
-|   3664: 80 0d 03 00 3a 00 00 00 15 04 33 66 6f 72 01 02   ....:.....3for..
-|   3680: 02 02 02 74 73 01 06 01 01 04 04 08 1b 84 80 80   ...ts...........
-|   3696: 80 80 0c 03 00 3c 00 00 00 17 03 32 74 68 01 06   .....<.....2th..
-|   3712: 01 01 03 00 04 33 65 61 63 01 02 03 04 09 18 84   .....3eac.......
-|   3728: 80 80 80 80 0b 03 00 36 00 00 00 13 03 32 74 61   .......6.....2ta
-|   3744: 01 06 01 01 05 02 01 65 01 02 04 04 09 19 84 80   .......e........
-|   3760: 80 80 80 0a 03 00 38 00 00 00 14 03 32 69 6e 01   ......8.....2in.
-|   3776: 06 01 01 02 01 02 70 72 01 02 05 04 09 18 84 80   ......pr........
-|   3792: 80 80 80 09 03 00 36 00 00 00 13 03 32 66 6f 01   ......6.....2fo.
-|   3808: 02 02 02 01 74 01 06 01 01 04 04 07 1b 84 80 80   ....t...........
-|   3824: 80 80 08 03 00 3c 00 00 00 16 02 31 74 01 0a 04   .....<.....1t...
-|   3840: 01 01 03 04 00 03 32 65 61 01 02 03 04 0a 17 84   ......2ea.......
-|   3856: 80 80 80 80 07 03 00 34 00 00 00 12 02 31 69 01   .......4.....1i.
-|   3872: 06 01 01 02 01 01 70 01 02 05 04 08 18 84 80 80   ......p.........
-|   3888: 80 80 06 03 00 36 00 00 00 13 02 31 65 01 02 03   .....6.....1e...
-|   3904: 01 01 66 01 08 02 01 01 04 04 06 1b 84 80 80 80   ..f.............
-|   3920: 80 05 03 00 3c 00 00 00 16 05 30 74 65 72 6d 01   ....<.....0term.
-|   3936: 02 04 02 02 68 65 01 06 01 01 03 04 09 14 84 80   ....he..........
-|   3952: 80 80 80 04 03 00 2e 00 00 00 10 06 30 64 61 62   ............0dab
-|   3968: 6c 65 01 06 01 01 05 04 15 84 80 80 80 80 03 03   le..............
-|   3984: 00 30 00 00 00 11 02 08 30 70 72 65 73 65 6e 74   .0......0present
-|   4000: 01 02 05 05 1b 84 80 80 80 80 02 03 00 3c 00 00   .............<..
-|   4016: 00 16 04 30 66 74 73 01 06 01 01 04 01 02 69 6e   ...0fts.......in
-|   4032: 01 06 01 01 04 0a 1a 84 80 80 80 80 01 03 00 3a   ...............:
-|   4048: 00 00 00 15 05 30 65 61 63 68 01 02 03 01 13 66   .....0each.....f
-|   4064: 6f 72 01 02 02 04 09 06 01 03 00 12 03 0b 0f 00   or..............
-|   4080: 00 08 8c 80 80 80 80 11 03 00 16 00 00 00 05 04   ................
-| page 3 offset 8192
-|      0: 0a 00 00 00 32 0e 4f 00 0f fa 0f f1 0f e9 0f e1   ....2.O.........
-|     16: 0f d8 0f d1 0f c9 0f c1 0f b9 0f b1 0f a9 0f a0   ................
-|     32: 0f 98 0f 90 0f 87 0f 80 0f 78 0f 71 0f 68 0f 5f   .........x.q.h._
-|     48: 0f 56 0f 4d 0f 41 0f 38 0f 2f 0f 26 0f 1d 0f 13   .V.M.A.8./.&....
-|     64: 0f 0a 0f 01 0e f7 0e ee 0e e6 0e dd 0e d6 0e cd   ................
-|     80: 0e c3 0e ba 0e 00 00 00 00 00 00 00 00 00 00 00   ................
-|   3648: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08   ................
-|   3664: 04 01 10 01 03 34 74 20 07 04 01 0e 01 03 34 1e   .....4t ......4.
-|   3680: 09 04 01 12 01 03 33 74 68 1c 08 04 01 10 01 03   ......3th.......
-|   3696: 33 6e 1a 08 04 01 10 01 03 32 77 18 08 04 01 10   3n.......2w.....
-|   3712: 01 03 32 74 16 08 04 01 10 01 03 32 6e 14 07 04   ..2t.......2n...
-|   3728: 01 0e 01 03 32 12 08 04 01 10 01 03 31 74 10 08   ....2.......1t..
-|   3744: 04 01 10 01 03 31 6e 0e 07 04 01 0e 01 03 31 0c   .....1n.......1.
-|   3760: 09 04 01 12 01 03 30 74 68 0a 08 04 01 10 01 03   ......0th.......
-|   3776: 30 74 08 09 04 01 12 01 03 30 6e 75 06 08 04 01   0t.......0nu....
-|   3792: 10 01 03 30 6e 04 06 04 01 0c 01 03 02 08 04 01   ...0n...........
-|   3808: 10 01 02 34 72 22 07 04 01 0e 01 02 34 20 08 04   ...4r.......4 ..
-|   3824: 01 10 01 02 33 72 1e 09 04 01 12 01 02 33 61 72   ....3r.......3ar
-|   3840: 1c 08 04 01 10 01 02 32 74 1a 08 04 01 10 01 02   .......2t.......
-|   3856: 32 69 18 09 04 01 12 01 02 32 61 72 16 08 04 01   2i.......2ar....
-|   3872: 10 01 02 31 74 14 08 04 01 10 01 02 31 6e 12 08   ...1t.......1n..
-|   3888: 04 01 10 01 02 31 62 10 08 04 01 10 01 02 31 32   .....1b.......12
-|   3904: 0e 0b 04 01 16 01 02 30 74 68 65 72 0c 08 04 01   .......0ther....
-|   3920: 10 01 02 30 74 0a 08 04 01 10 01 02 30 6e 08 08   ...0t.......0n..
-|   3936: 14 01 10 01 02 30 62 06 08 04 01 10 01 02 30 61   .....0b.......0a
-|   3952: 04 06 04 01 0c 01 02 02 07 04 09 10 01 34 74 22   .............4t.
-|   3968: 06 04 09 0e 01 34 20 08 04 09 12 01 33 74 65 1e   .....4 .....3te.
-|   3984: 07 04 09 10 01 33 70 1c 07 04 09 10 01 33 66 1a   .....3p......3f.
-|   4000: 08 04 09 12 01 32 74 68 18 07 04 09 10 01 32 74   .....2th......2t
-|   4016: 16 01 64 09 10 01 32 69 14 07 04 09 10 01 32 66   ..d...2i......2f
-|   4032: 12 07 04 09 10 01 31 74 10 07 04 09 10 01 31 69   ......1t......1i
-|   4048: 0e 06 04 09 0e 01 31 0c 08 04 09 12 01 30 74 65   ......1......0te
-|   4064: 0a 06 04 09 10 01 30 74 08 07 04 09 10 01 30 70   ......0t......0p
-|   4080: 06 08 04 09 12 00 00 00 00 00 00 00 00 00 00 00   ................
-| page 4 offset 12288
-|   4064: 00 00 00 00 00 00 00 00 00 00 00 05 03 03 00 10   ................
-|   4080: 03 05 05 02 03 00 10 04 06 05 01 03 00 10 04 04   ................
-| page 5 offset 16384
-|      0: 0a 00 00 00 02 0f eb 00 0f eb 0f f4 00 00 00 00   ................
-|   4064: 00 00 00 00 00 00 00 00 00 00 00 08 03 15 01 70   ...............p
-|   4080: 67 73 7a 18 0b 03 1b 01 76 65 72 73 69 6f 6e 04   gsz.....version.
-| page 6 offset 20480
-|      0: 0d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
-|   4080: 00 00 03 03 02 01 03 03 02 02 01 00 00 00 00 00   ................
-| end crash-0f47112aa7520c.db
-  }]
-} {}
-
-do_catchsql_test 1.1 {
-  SELECT * FROM t1('R*') WHERE (a,b)<=(current_date,0) ORDER BY rowid DESC;
-} {1 {database disk image is malformed}}
-
-#-------------------------------------------------------------------------
-#
-reset_db
-do_test 2.0 {
-  sqlite3 db {}
-  db deserialize [decode_hexdb {
-
-.open --hexdb
-| size 24576 pagesize 4096 filename sql047467.txt.db
-| page 1 offset 0
-|      0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00   SQLite format 3.
-|     16: 10 00 01 01 00 40 20 20 00 00 00 00 00 00 00 00   .....@  ........
-|     96: 00 00 00 00 0d 00 00 00 06 0e 0f 00 0f aa 0f 53   ...............S
-|    112: 0e e8 0e 8b 0e 33 0e 0f 01 00 00 00 00 00 00 00   .....3..........
-|   3584: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 22   ................
-|   3600: 06 06 17 11 11 01 31 74 61 62 6c 65 62 62 62 62   ......1tablebbbb
-|   3616: 06 43 52 45 41 54 45 20 54 41 42 4c 45 20 62 62   .CREATE TABLE bb
-|   3632: 28 61 29 56 05 06 17 1f 1f 01 7d 74 61 62 6c 65   (a)V.......table
-|   3648: 74 31 5f 63 6f 6e 66 69 67 74 31 5f 63 6f 6e 66   t1_configt1_conf
-|   3664: 69 67 05 43 52 45 41 54 45 20 54 41 42 4c 45 20   ig.CREATE TABLE 
-|   3680: 27 74 31 5f 63 6f 6e 66 69 67 27 28 6b 20 50 52   't1_config'(k PR
-|   3696: 49 4d 41 52 59 20 4b 45 59 2c 20 76 29 20 57 49   IMARY KEY, v) WI
-|   3712: 54 48 4f 55 54 20 52 4f 57 49 44 5b 04 07 17 21   THOUT ROWID[...!
-|   3728: 21 01 81 01 74 61 62 6c 65 74 31 5f 64 6f 63 73   !...tablet1_docs
-|   3744: 69 7a 65 74 31 5f 64 6f 63 73 69 7a 65 04 43 52   izet1_docsize.CR
-|   3760: 45 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 64   EATE TABLE 't1_d
-|   3776: 6f 63 73 69 7a 65 27 28 69 64 20 49 4e 54 45 47   ocsize'(id INTEG
-|   3792: 45 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20   ER PRIMARY KEY, 
-|   3808: 73 7a 20 42 4c 4f 42 29 69 03 07 17 19 19 01 81   sz BLOB)i.......
-|   3824: 2d 74 61 62 6c 65 74 31 5f 69 64 78 74 31 5f 69   -tablet1_idxt1_i
-|   3840: 64 78 03 43 52 45 41 54 45 20 54 41 42 4c 45 20   dx.CREATE TABLE 
-|   3856: 27 74 31 5f 69 64 78 27 28 73 65 67 69 64 2c 20   't1_idx'(segid, 
-|   3872: 74 65 72 6d 2c 20 70 67 6e 6f 2c 20 50 52 49 4d   term, pgno, PRIM
-|   3888: 41 52 59 20 4b 45 59 28 73 65 67 69 64 2c 20 74   ARY KEY(segid, t
-|   3904: 65 72 6d 29 29 20 57 49 54 48 4f 55 54 20 52 4f   erm)) WITHOUT RO
-|   3920: 57 49 44 55 02 07 17 1b 1b 01 81 01 74 61 62 6c   WIDU........tabl
-|   3936: 65 74 31 5f 64 61 74 61 74 31 5f 64 61 74 61 02   et1_datat1_data.
-|   3952: 43 52 45 41 54 45 20 54 41 42 4c 45 20 27 74 31   CREATE TABLE 't1
-|   3968: 5f 64 61 74 61 27 28 69 64 20 49 4e 54 45 47 45   _data'(id INTEGE
-|   3984: 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 62   R PRIMARY KEY, b
-|   4000: 6c 6f 63 6b 20 42 4c 4f 42 29 54 01 07 17 11 11   lock BLOB)T.....
-|   4016: 08 81 15 74 61 62 6c 65 74 31 74 31 43 52 45 41   ...tablet1t1CREA
-|   4032: 54 45 20 56 49 52 54 55 41 4c 20 54 41 42 4c 45   TE VIRTUAL TABLE
-|   4048: 20 74 31 20 55 53 49 4e 47 20 66 74 73 35 28 61    t1 USING fts5(a
-|   4064: 2c 62 2c 70 72 65 66 69 78 3d 22 31 2c 32 2c 33   ,b,prefix=.1,2,3
-|   4080: 2c 34 22 2c 20 63 6f 6e 74 65 6e 74 3d 22 22 29   ,4., content=..)
-| page 2 offset 4096
-|      0: 0d 0b 6a 00 37 09 4c 02 0f e7 09 4c 0f c6 0f a4   ..j.7.L....L....
-|     16: 0f 88 0f 6d 0f 4b 0f 2c 0f 0e 0e ec 0e cd 0e ad   ...m.K.,........
-|     32: 0e 8e 0e 6c 0e 4b 0e 29 0e 08 0d e6 0d c4 0d b5   ...l.K.)........
-|     48: 0d 97 0d 76 0d 54 0d 31 0d 15 0c f3 0c d3 0c b5   ...v.T.1........
-|     64: 0c 95 0c 73 0c 54 0c 32 0c 10 0b ee 0b cc 0b b0   ...s.T.2........
-|     80: 0b 8d 0b 7e 0b 48 0b 2e 0b 0b 0a ef 00 00 00 00   ...~.H..........
-|   2368: 00 00 00 00 00 00 00 00 00 00 00 00 15 0a 03 00   ................
-|   2384: 30 00 00 00 01 01 03 35 00 03 01 11 12 02 01 12   0......5........
-|   2400: 03 01 11 1c 8c 80 80 80 80 10 03 00 3e 00 00 00   ............>...
-|   2416: 17 01 05 05 34 74 61 62 6c 03 02 03 01 04 77 68   ....4tabl.....wh
-|   2432: 65 72 03 02 06 09 1b 8c 80 80 80 80 0f 03 00 3c   er.............<
-|   2448: 00 00 00 16 05 34 66 74 73 34 03 02 02 01 04 6e   .....4fts4.....n
-|   2464: 75 6d 62 03 06 01 04 09 1b 8c 80 80 80 80 0e 03   umb.............
-|   2480: 00 3b ff f0 00 16 04 33 74 68 65 03 06 01 01 04   .;.....3the.....
-|   2496: 01 03 77 68 65 03 02 04 04 0a 1b 8c 80 80 80 80   ..whe...........
-|   2512: 0d 03 00 3c 00 00 00 16 04 33 6e 75 6d 03 06 01   ...<.....3num...
-|   2528: 01 05 01 03 74 61 62 03 02 03 04 0a 19 8c 80 80   ....tab.........
-|   2544: 80 80 0c 03 00 38 00 00 00 14 03 32 77 68 03 02   .....8.....2wh..
-|   2560: 04 00 04 33 66 74 73 03 02 02 04 07 18 8c 80 80   ...3fts.........
-|   2576: 80 80 0b 03 00 36 00 00 00 13 03 32 74 61 03 02   .....6.....2ta..
-|   2592: 03 02 01 68 03 06 01 01 04 04 07 1b 8c 80 80 80   ...h............
-|   2608: 80 0a 03 00 3c 00 00 00 16 03 32 6e 75 03 06 01   ....<.....2nu...
-|   2624: 01 05 01 02 6f 66 03 06 01 01 06 04 09 19 8c 80   ....of..........
-|   2640: 80 80 80 09 03 00 38 00 00 00 14 03 32 66 74 03   ......8.....2ft.
-|   2656: 02 02 01 02 69 73 03 06 01 01 03 04 07 18 8c 80   ....is..........
-|   2672: 80 80 80 08 03 00 36 00 00 00 13 02 31 74 03 08   ......6.....1t..
-|   2688: 03 01 01 04 01 01 77 03 02 04 04 09 1a 8c 80 80   ......w.........
-|   2704: 80 80 07 03 00 3a 00 00 00 15 02 31 6e 03 08 01   .....:.....1n...
-|   2720: 01 02 05 01 00 6f 03 06 01 01 06 14 09 18 8c 80   .....o..........
-|   2736: 80 80 80 06 03 00 36 00 00 00 03 04 02 31 66 03   ......6......1f.
-|   2752: 02 02 01 01 69 03 06 01 01 03 04 f6 1c 8c 80 80   ....i...........
-|   2768: 80 80 05 03 00 3e 00 00 00 17 04 30 74 68 65 03   .....>.....0the.
-|   2784: f6 01 01 04 01 05 77 68 65 72 65 03 02 04 0a 15   ......where.....
-|   2800: 8c 80 80 80 80 04 03 00 30 00 00 00 11 01 01 06   ........0.......
-|   2816: 06 30 74 61 62 6c 65 0f 42 03 07 1c 8c 81 80 80   .0table.B.......
-|   2832: 80 03 03 00 3e 00 00 00 17 07 30 6e 75 6d 62 65   ....>.....0numbe
-|   2848: 72 03 06 01 01 05 01 02 6f 66 03 06 04 0d 13 8c   r.......of......
-|   2864: 80 80 80 80 02 03 00 2c 00 00 00 0f 01 01 03 02   .......,........
-|   2880: 30 6e 03 06 01 01 02 07 1b 8c 80 80 80 80 01 03   0n..............
-|   2896: 00 3c 00 00 00 16 08 30 66 74 73 34 61 75 78 03   .<.....0fts4aux.
-|   2912: 02 02 01 02 69 73 03 06 04 0c 00 00 00 14 2a 00   ....is........*.
-|   2928: 00 00 01 01 02 24 00 02 01 01 12 02 01 12 08 88   .....$..........
-|   2944: 80 80 80 80 12 03 00 16 00 00 00 05 02 1c 88 80   ................
-|   2960: 80 80 80 11 03 00 3e 00 00 00 17 05 34 72 6f 77   ......>.....4row
-|   2976: 73 02 06 01 01 05 01 04 74 68 65 72 02 02 04 0b   s.......ther....
-|   2992: 15 88 80 80 80 80 10 03 00 30 00 00 00 11 02 01   .........0......
-|   3008: 01 07 05 34 62 65 74 77 02 02 04 08 1b 88 80 80   ...4betw........
-|   3024: 80 80 0f 03 00 3c 00 00 00 16 04 04 33 72 6f 77   .....<......3row
-|   3040: 02 06 01 01 05 01 03 74 68 65 02 08 05 0a 1b 88   .......the......
-|   3056: 80 80 80 80 0e 03 00 3c 00 00 00 16 01 01 02 04   .......<........
-|   3072: 33 61 72 65 02 02 03 01 03 62 65 74 02 02 07 08   3are.....bet....
-|   3088: 1b 88 80 80 80 80 0d 03 00 3c 00 00 00 16 13 32   .........<.....2
-|   3104: 74 68 02 08 02 01 01 07 00 04 33 61 6e 64 02 06   th........3and..
-|   3120: 04 0a 1b 88 80 80 80 80 0c 03 00 3c 00 00 00 16   ...........<....
-|   3136: 03 32 69 6e 02 06 01 01 06 01 02 72 6f 02 06 01   .2in.......ro...
-|   3152: 01 05 04 09 18 88 80 80 80 80 0b 03 00 36 00 00   .............6..
-|   3168: 00 13 02 03 32 61 72 02 02 03 01 02 62 65 02 02   ....2ar.....be..
-|   3184: 04 05 07 1b 88 80 80 80 80 0a 03 00 3c 00 94 50   ............<..P
-|   3200: 16 02 31 74 02 08 02 01 01 07 00 03 32 61 6e 02   ..1t........2an.
-|   3216: 06 01 01 04 09 19 88 80 80 80 80 09 03 00 38 00   ..............8.
-|   3232: 00 00 14 02 31 6e 02 06 01 01 03 01 01 72 02 06   ....1n.......r..
-|   3248: 01 01 05 04 08 17 88 80 80 80 80 08 03 00 34 00   ..............4.
-|   3264: 00 00 12 02 31 62 02 02 04 01 01 69 02 06 01 01   ....1b.....i....
-|   3280: 06 04 06 19 88 80 80 80 80 07 03 00 38 00 00 00   ............8...
-|   3296: 14 04 02 31 32 02 02 05 01 01 61 02 08 03 01 01   ...12.....a.....
-|   3312: 02 05 06 1b 88 80 80 80 80 06 03 00 3c 00 00 00   ............<...
-|   3328: 16 06 30 74 68 65 72 65 02 02 02 00 02 31 31 02   ..0there.....11.
-|   3344: 06 01 01 04 0a 15 88 80 80 80 80 05 03 00 30 00   ..............0.
-|   3360: 00 00 11 01 01 05 04 30 74 68 65 02 06 01 01 07   .......0the.....
-|   3376: 07 1c 88 80 80 80 80 04 03 00 3e 00 00 00 17 01   ..........>.....
-|   3392: 01 06 02 30 6e 02 06 01 01 03 01 04 72 6f 77 73   ...0n.......rows
-|   3408: 02 06 07 08 1b 88 80 80 80 80 03 03 00 3c 00 00   .............<..
-|   3424: 00 16 08 30 62 65 74 77 65 65 6e 02 02 04 01 02   ...0between.....
-|   3440: 69 6e 02 06 04 0c 1a 88 80 80 80 80 02 03 00 3a   in.............:
-|   3456: 00 00 00 15 04 30 61 6e 64 02 06 01 01 02 02 02   .....0and.......
-|   3472: 72 65 02 02 03 04 0a 17 88 80 80 80 80 01 03 00   re..............
-|   3488: 34 00 00 00 12 02 30 31 02 06 01 01 04 01 01 32   4.....01.......2
-|   3504: 02 02 05 04 08 08 84 80 80 80 80 12 03 00 16 00   ................
-|   3520: 00 00 05 04 1b 84 80 80 80 80 11 03 00 3c 00 00   .............<..
-|   3536: 00 16 05 34 74 61 62 6c 01 06 01 01 05 02 03 65   ...4tabl.......e
-|   3552: 72 6d 01 02 04 0b 1b 84 80 80 80 80 10 03 00 3c   rm.............<
-|   3568: 00 00 00 16 05 34 65 61 63 68 01 02 03 01 04 70   .....4each.....p
-|   3584: 72 65 73 01 02 05 04 08 1a 84 80 80 80 80 0f 03   res.............
-|   3600: 00 3a 00 00 00 15 04 33 74 65 72 01 02 04 02 02   .:.....3ter.....
-|   3616: 68 65 01 06 01 01 03 04 08 1b 84 80 80 80 80 0e   he..............
-|   3632: 03 00 3c 00 00 00 16 04 33 80 72 65 01 02 05 01   ..<.....3.re....
-|   3648: 03 74 61 62 01 06 01 01 05 04 08 1a 84 80 80 80   .tab............
-|   3664: 80 0d 03 00 3a 00 00 00 15 04 33 66 6f 72 01 02   ....:.....3for..
-|   3680: 02 02 02 74 73 01 06 01 01 04 04 08 1b 84 80 80   ...ts...........
-|   3696: 80 80 0c 03 00 3c 00 00 00 17 03 32 74 68 01 06   .....<.....2th..
-|   3712: 01 01 03 00 04 33 65 61 63 01 02 03 04 09 18 84   .....3eac.......
-|   3728: 80 80 80 80 0b 03 00 36 00 00 00 13 03 32 74 61   .......6.....2ta
-|   3744: 01 06 01 01 05 02 01 65 01 02 04 04 09 19 84 80   .......e........
-|   3760: 80 80 80 0a 03 00 38 00 00 00 14 03 32 69 6e 01   ......8.....2in.
-|   3776: 06 01 01 02 01 02 70 72 01 02 05 04 09 18 84 80   ......pr........
-|   3792: 80 80 80 09 03 00 36 00 00 00 13 03 32 66 6f 01   ......6.....2fo.
-|   3808: 02 02 02 01 74 01 06 01 01 04 04 07 1b 84 80 80   ....t...........
-|   3824: 80 80 08 03 00 3c 00 00 00 16 02 31 74 01 0a 04   .....<.....1t...
-|   3840: 01 01 03 04 00 03 32 65 61 01 02 03 04 0a 17 84   ......2ea.......
-|   3856: 80 80 80 80 07 03 00 34 00 00 00 12 02 31 69 01   .......4.....1i.
-|   3872: 06 01 01 02 01 01 70 01 02 05 04 08 18 84 80 80   ......p.........
-|   3888: 80 80 06 03 00 36 00 00 00 13 02 31 65 01 02 03   .....6.....1e...
-|   3904: 01 01 66 01 08 02 01 01 04 04 06 1b 84 80 80 80   ..f.............
-|   3920: 80 05 03 00 3c 00 00 00 16 05 30 74 65 72 6d 01   ....<.....0term.
-|   3936: 02 04 02 02 68 65 01 06 01 01 03 04 09 14 84 80   ....he..........
-|   3952: 80 80 80 04 03 00 2e 00 00 00 10 06 30 64 61 62   ............0dab
-|   3968: 6c 65 01 06 01 01 05 04 15 84 80 80 80 80 03 03   le..............
-|   3984: 00 30 00 00 00 11 02 08 30 70 72 65 73 65 6e 74   .0......0present
-|   4000: 01 02 05 05 1b 84 80 80 80 80 02 03 00 3c 00 00   .............<..
-|   4016: 00 16 04 30 66 74 73 01 06 01 01 04 01 02 69 6e   ...0fts.......in
-|   4032: 01 06 01 01 04 0a 1a 84 80 80 80 80 01 03 00 3a   ...............:
-|   4048: 00 00 00 15 05 30 65 61 63 68 01 02 03 01 13 66   .....0each.....f
-|   4064: 6f 72 01 02 02 04 09 06 01 03 00 12 03 0b 0f 00   or..............
-|   4080: 00 08 8c 80 80 80 80 11 03 00 16 00 00 00 05 04   ................
-| page 3 offset 8192
-|      0: 0a 00 00 00 32 0e 4f 00 0f fa 0f f1 0f e9 0f e1   ....2.O.........
-|     16: 0f d8 0f d1 0f c9 0f c1 0f b9 0f b1 0f a9 0f a0   ................
-|     32: 0f 98 0f 90 0f 87 0f 80 0f 78 0f 71 0f 68 0f 5f   .........x.q.h._
-|     48: 0f 56 0f 4d 0f 41 0f 38 0f 2f 0f 26 0f 1d 0f 13   .V.M.A.8./.&....
-|     64: 0f 0a 0f 01 0e f7 0e ee 0e e6 0e dd 0e d6 0e cd   ................
-|     80: 0e c3 0e ba 0e 00 00 00 00 00 00 00 00 00 00 00   ................
-|   3648: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08   ................
-|   3664: 04 01 10 01 03 34 74 20 07 04 01 0e 01 03 34 1e   .....4t ......4.
-|   3680: 09 04 01 12 01 03 33 74 68 1c 08 04 01 10 01 03   ......3th.......
-|   3696: 33 6e 1a 08 04 01 10 01 03 32 77 18 08 04 01 10   3n.......2w.....
-|   3712: 01 03 32 74 16 08 04 01 10 01 03 32 6e 14 07 04   ..2t.......2n...
-|   3728: 01 0e 01 03 32 12 08 04 01 10 01 03 31 74 10 08   ....2.......1t..
-|   3744: 04 01 10 01 03 31 6e 0e 07 04 01 0e 01 03 31 0c   .....1n.......1.
-|   3760: 09 04 01 12 01 03 30 74 68 0a 08 04 01 10 01 03   ......0th.......
-|   3776: 30 74 08 09 04 01 12 01 03 30 6e 75 06 08 04 01   0t.......0nu....
-|   3792: 10 01 03 30 6e 04 06 04 01 0c 01 03 02 08 04 01   ...0n...........
-|   3808: 10 01 02 34 72 22 07 04 01 0e 01 02 34 20 08 04   ...4r.......4 ..
-|   3824: 01 10 01 02 33 72 1e 09 04 01 12 01 02 33 61 72   ....3r.......3ar
-|   3840: 1c 08 04 01 10 01 02 32 74 1a 08 04 01 10 01 02   .......2t.......
-|   3856: 32 69 18 09 04 01 12 01 02 32 61 72 16 08 04 01   2i.......2ar....
-|   3872: 10 01 02 31 74 14 08 04 01 10 01 02 31 6e 12 08   ...1t.......1n..
-|   3888: 04 01 10 01 02 31 62 10 08 04 01 10 01 02 31 32   .....1b.......12
-|   3904: 0e 0b 04 01 16 01 02 30 74 68 65 72 0c 08 04 01   .......0ther....
-|   3920: 10 01 02 30 74 0a 08 04 01 10 01 02 30 6e 08 08   ...0t.......0n..
-|   3936: 14 01 10 01 02 30 62 06 08 04 01 10 01 02 30 61   .....0b.......0a
-|   3952: 04 06 04 01 0c 01 02 02 07 04 09 10 01 34 74 22   .............4t.
-|   3968: 06 04 09 0e 01 34 20 08 04 09 12 01 33 74 65 1e   .....4 .....3te.
-|   3984: 07 04 09 10 01 33 70 1c 07 04 09 10 01 33 66 1a   .....3p......3f.
-|   4000: 08 04 09 12 01 32 74 68 18 07 04 09 10 01 32 74   .....2th......2t
-|   4016: 16 01 64 09 10 01 32 69 14 07 04 09 10 01 32 66   ..d...2i......2f
-|   4032: 12 07 04 09 10 01 31 74 10 07 04 09 10 01 31 69   ......1t......1i
-|   4048: 0e 06 04 09 0e 01 31 0c 08 04 09 12 01 30 74 65   ......1......0te
-|   4064: 0a 06 04 09 10 01 30 74 08 07 04 09 10 01 30 70   ......0t......0p
-|   4080: 06 08 04 09 12 00 00 00 00 00 00 00 00 00 00 00   ................
-| page 4 offset 12288
-|   4064: 00 00 00 00 00 00 00 00 00 00 00 05 03 03 00 10   ................
-|   4080: 03 05 05 02 03 00 10 04 06 05 01 03 00 10 04 04   ................
-| page 5 offset 16384
-|      0: 0a 00 00 00 02 0f eb 00 0f eb 0f f4 00 00 00 00   ................
-|   4064: 00 00 00 00 00 00 00 00 00 00 00 08 03 15 01 70   ...............p
-|   4080: 67 73 7a 18 0b 03 1b 01 76 65 72 73 69 6f 6e 04   gsz.....version.
-| page 6 offset 20480
-|      0: 0d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
-|   4080: 00 00 03 03 02 01 03 03 02 02 01 00 00 00 00 00   ................
-| end sql047467.txt.db
-}]} {}
-
-do_catchsql_test 2.1 {
-SELECT * FROM t1('R*R*R*R*') WHERE (a,b)<=(current_date,0) ORDER BY rowid DESC;
-} {1 {database disk image is malformed}}
-
-#-------------------------------------------------------------------------
-reset_db
-do_test 3.0 {
-  sqlite3 db {}
-  db deserialize [decode_hexdb {
-.open --hexdb
-| size 32768 pagesize 4096 filename crash-c69fcaceff1e50.db
-| page 1 offset 0
-|      0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00   SQLite format 3.
-|     16: 10 00 01 01 00 40 20 20 00 00 00 00 00 00 00 08   .....@  ........
-|     32: 00 00 00 02 00 00 00 01 00 00 00 09 00 00 00 04   ................
-|     96: 00 00 00 00 0d 0f c7 00 07 0d 92 00 0f 8d 0f 36   ...............6
-|    112: 0e cb 0e 6b 0e 0e 0d b6 0d 92 0d 92 00 00 00 00   ...k............
-|   3472: 00 00 22 08 06 17 11 11 01 31 74 61 62 6c 65 74   .........1tablet
-|   3488: 32 74 32 08 43 52 45 41 54 45 20 54 41 42 4c 45   2t2.CREATE TABLE
-|   3504: 20 74 32 28 78 29 56 07 06 17 1f 1f 01 7d 74 61    t2(x)V.......ta
-|   3520: 62 6c 65 74 31 5f 63 6f 6e 66 69 67 74 31 5f 63   blet1_configt1_c
-|   3536: 6f 6e 66 69 67 07 43 52 45 41 54 45 20 54 41 42   onfig.CREATE TAB
-|   3552: 4c 45 20 27 74 31 5f 63 6f 6e 66 69 67 27 28 6b   LE 't1_config'(k
-|   3568: 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 76 29    PRIMARY KEY, v)
-|   3584: 20 57 49 54 48 4f 55 54 20 52 4f 57 49 44 5b 06    WITHOUT ROWID[.
-|   3600: 07 17 21 21 01 81 01 74 61 62 6c 65 74 31 5f 64   ..!!...tablet1_d
-|   3616: 6f 63 73 69 7a 65 74 31 5f 64 6f 63 73 69 7a 65   ocsizet1_docsize
-|   3632: 06 43 52 45 41 54 45 20 54 41 42 4c 45 20 27 74   .CREATE TABLE 't
-|   3648: 31 5f 64 6f 63 73 69 7a 65 27 28 69 64 20 49 4e   1_docsize'(id IN
-|   3664: 54 45 47 45 52 20 50 52 49 4d 41 52 59 20 4b 45   TEGER PRIMARY KE
-|   3680: 59 2c 20 73 7a 20 42 4c 4f 42 29 5e 05 07 17 21   Y, sz BLOB)^...!
-|   3696: 21 01 81 07 74 61 62 6c 65 74 31 5f 63 6f 6e 74   !...tablet1_cont
-|   3712: 65 6e 74 74 31 5f 63 6f 6e 74 65 6e 74 05 43 52   entt1_content.CR
-|   3728: 45 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 63   EATE TABLE 't1_c
-|   3744: 6f 6e 74 65 6e 74 27 28 69 64 20 49 4e 54 45 47   ontent'(id INTEG
-|   3760: 45 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20   ER PRIMARY KEY, 
-|   3776: 63 30 2c 20 63 31 2c 20 63 32 29 69 04 07 17 19   c0, c1, c2)i....
-|   3792: 19 01 81 2d 74 61 62 6c 65 74 31 5f 69 64 78 74   ...-tablet1_idxt
-|   3808: 31 5f 69 64 78 04 43 52 45 41 54 45 20 54 41 42   1_idx.CREATE TAB
-|   3824: 4c 45 20 27 74 31 5f 69 64 78 27 28 73 65 67 69   LE 't1_idx'(segi
-|   3840: 64 2c 20 74 65 72 6d 2c 20 70 67 6e 6f 2c 20 50   d, term, pgno, P
-|   3856: 52 49 4d 41 52 59 20 4b 45 59 28 73 65 67 69 64   RIMARY KEY(segid
-|   3872: 2c 20 74 65 72 6d 29 29 20 57 49 54 48 4f 55 54   , term)) WITHOUT
-|   3888: 20 52 4f 57 49 44 55 03 07 17 1b 1b 01 81 01 74    ROWIDU........t
-|   3904: 61 62 6c 65 74 31 5f 64 61 74 61 74 31 5f 64 61   ablet1_datat1_da
-|   3920: 74 61 03 43 52 45 41 54 45 20 54 41 42 4c 45 20   ta.CREATE TABLE 
-|   3936: 27 74 31 5f 64 61 74 61 27 28 69 64 20 49 4e 54   't1_data'(id INT
-|   3952: 45 47 45 52 20 50 52 49 4d 41 52 59 20 4b 45 59   EGER PRIMARY KEY
-|   3968: 2c 20 62 6c 6f 63 6b 20 42 4c 4f 42 29 38 02 06   , block BLOB)8..
-|   3984: 17 11 11 08 5f 74 61 62 6c 65 74 31 74 31 43 52   ...._tablet1t1CR
-|   4000: 45 41 54 45 20 56 49 52 54 55 41 4c 20 54 41 42   EATE VIRTUAL TAB
-|   4016: 4c 45 20 74 31 20 55 53 49 4e 47 20 66 74 73 35   LE t1 USING fts5
-|   4032: 28 61 2c 62 2c 63 29 00 00 00 00 00 00 00 00 00   (a,b,c).........
-| page 3 offset 8192
-|      0: 0d 00 00 00 03 0c 94 00 0f e6 0f ef 0c 94 00 00   ................
-|   3216: 00 00 00 00 86 4a 84 80 80 80 80 01 04 00 8d 18   .....J..........
-|   3232: 00 00 01 bb 02 30 30 01 02 06 01 02 06 01 02 06   .....00.........
-|   3248: 1f 02 03 01 02 03 01 02 03 01 08 32 30 31 36 30   ...........20160
-|   3264: 36 30 39 01 02 07 01 02 07 01 02 07 01 01 34 01   609...........4.
-|   3280: 02 05 01 02 05 01 02 05 01 01 35 01 02 04 01 02   ..........5.....
-|   3296: 04 01 02 04 02 07 30 30 30 30 30 30 30 1c 02 04   ......0000000...
-|   3312: 01 02 04 01 02 04 01 06 62 69 6e 61 72 79 03 06   ........binary..
-|   3328: 01 02 02 03 06 01 02 02 03 06 01 02 02 03 06 01   ................
-|   3344: 02 02 03 06 01 02 02 03 06 01 02 02 03 06 01 02   ................
-|   3360: 02 03 06 01 02 02 03 06 01 02 02 03 06 01 02 02   ................
-|   3376: 03 06 01 02 02 03 06 01 02 02 01 08 63 6f 6d 70   ............comp
-|   3392: 69 6c 65 72 01 02 02 01 02 02 01 02 02 01 06 64   iler...........d
-|   3408: 62 73 74 61 74 07 02 03 01 02 03 01 02 03 02 04   bstat...........
-|   3424: 65 62 75 67 04 02 02 01 02 02 01 02 02 01 06 65   ebug...........e
-|   3440: 6b b1 62 6c 65 07 02 02 01 02 02 01 02 02 01 02   k.ble...........
-|   3456: 02 01 02 02 01 02 02 01 02 02 01 02 02 01 02 02   ................
-|   3472: 01 02 02 01 02 02 05 02 02 01 02 02 01 02 02 01   ................
-|   3488: 02 02 01 02 02 01 02 02 01 02 02 01 02 02 01 02   ................
-|   3504: 02 01 02 02 02 08 78 74 65 6e 73 69 6f 6e 1f 02   ......xtension..
-|   3520: 04 01 02 04 01 02 04 01 04 66 74 73 34 1a 02 03   .........fts4...
-|   3536: 01 02 03 01 02 03 04 01 35 0d 02 03 01 02 03 01   ........5.......
-|   3552: 02 03 01 03 67 63 63 01 02 03 01 02 03 01 02 03   ....gcc.........
-|   3568: 02 06 65 6f 70 6f 6c 79 10 02 03 01 02 03 01 02   ..eopoly........
-|   3584: 03 01 05 6a 73 6f 6e 31 13 02 03 01 02 03 01 02   ...json1........
-|   3600: 03 01 04 6c 6f 61 64 1f 02 03 01 02 03 01 02 03   ...load.........
-|   3616: 01 03 6d 61 78 1c 02 02 01 02 02 01 02 02 02 05   ..max...........
-|   3632: 65 6d 6f 72 79 1c 02 03 01 02 03 01 02 03 04 04   emory...........
-|   3648: 73 79 73 35 16 02 03 01 02 03 01 02 03 01 06 6e   sys5...........n
-|   3664: 6f 63 61 73 65 02 06 01 02 02 03 06 01 02 02 03   ocase...........
-|   3680: 06 01 02 02 03 06 01 02 02 03 06 01 02 02 03 06   ................
-|   3696: 01 02 02 03 06 01 02 02 03 06 01 02 02 03 06 01   ................
-|   3712: 02 02 03 06 01 02 02 03 06 01 02 02 03 06 01 02   ................
-|   3728: 02 01 04 6f 6d 69 74 1f 02 02 01 02 02 01 02 01   ...omit.........
-|   3744: ff ff ff ff ff ff ff ff ff ff ff ff ff ff f1 02   ................
-|   3760: 58 81 96 4d 01 06 01 02 02 03 06 01 02 02 03 06   X..M............
-|   3776: 01 02 02 03 06 01 02 02 03 06 01 02 02 03 06 01   ................
-|   3792: 02 02 03 06 01 02 02 03 06 01 02 02 03 06 01 02   ................
-|   3808: 02 03 06 01 02 02 03 06 01 02 02 03 06 01 02 02   ................
-|   3824: 01 0a 74 68 72 65 61 64 73 61 66 65 22 02 02 01   ..threadsafe....
-|   3840: 02 02 01 02 02 01 04 76 74 61 62 07 02 04 01 02   .......vtab.....
-|   3856: 04 01 02 04 01 01 78 01 06 01 01 02 01 06 01 01   ......x.........
-|   3872: 02 01 06 01 c6 02 01 06 01 01 02 01 06 01 01 02   ................
-|   3888: 01 06 01 01 02 01 06 01 01 02 01 06 01 01 02 01   ................
-|   3904: 06 01 01 02 00 f6 01 01 02 01 06 01 01 02 01 06   ................
-|   3920: 01 01 02 01 06 01 01 02 01 06 01 01 02 01 06 01   ................
-|   3936: 01 02 01 06 01 01 02 01 06 01 01 02 01 06 01 01   ................
-|   3952: 02 01 06 01 01 02 01 06 01 01 02 01 06 01 01 02   ................
-|   3968: 01 06 01 01 02 01 06 01 01 02 01 06 01 01 02 01   ................
-|   3984: 06 01 01 02 01 06 01 01 02 01 06 01 01 02 01 06   ................
-|   4000: 01 01 02 01 06 01 01 02 01 06 01 01 02 01 06 01   ................
-|   4016: 01 02 01 06 01 01 02 01 06 01 01 02 01 06 01 01   ................
-|   4032: 02 01 06 01 01 02 01 06 01 01 02 04 15 13 0c 0c   ................
-|   4048: 12 44 13 11 0f 47 13 0f 0c 0e 11 10 0f 0e 10 0f   .D...G..........
-|   4064: 44 0f 10 40 15 0f 07 01 03 00 14 24 5a 24 24 0f   D..@.......$Z$$.
-|   4080: 0a 03 00 24 00 00 00 00 01 01 01 00 01 01 01 01   ...$............
-| page 4 offset 12288
-|      0: 0a 00 00 00 01 0f fa 00 0f fa 00 00 00 00 00 00   ................
-|   4080: 00 00 00 00 00 00 00 00 00 00 05 04 09 0c 01 02   ................
-| page 7 offset 24576
-|      0: 0a 00 00 00 01 0f f4 00 0f f4 00 00 00 00 00 00   ................
-|   4080: 00 00 00 00 0b 03 1b 01 76 65 72 73 69 6f 6e 04   ........version.
-| end crash-c69fcaceff1e50.db
-}]} {}
-
-do_catchsql_test 3.1 {
-  UPDATE t1 SET b=quote(zeroblob(200)) WHERE a MATCH 'thra*T';
-} {1 {database disk image is malformed}}
-
-#-------------------------------------------------------------------------
-reset_db
-do_test 4.0 {
-  sqlite3 db {}
-  db deserialize [decode_hexdb {
-.open --hexdb
-| size 24576 pagesize 4096 filename crash-ef6738247b1344.db
-| page 1 offset 0
-|      0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00   SQLite format 3.
-|     16: 10 00 01 01 00 40 20 20 00 10 00 06 40 00 00 06   .....@  ....@...
-|     32: 00 00 00 00 00 00 00 00 00 00 00 06 00 00 00 00   ................
-|     96: 00 00 00 00 0d 00 00 00 06 0e 0f 00 0f aa 0f 53   ...............S
-|    112: 0e e8 0e 8b 0e 33 0e 0f 00 00 00 00 00 00 00 00   .....3..........
-|   3584: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 22   ................
-|   3600: 06 06 17 11 11 01 31 74 61 62 6c 65 62 62 62 62   ......1tablebbbb
-|   3616: 06 43 52 45 41 54 45 20 54 41 42 4c 45 20 62 62   .CREATE TABLE bb
-|   3632: 28 61 29 56 05 06 17 1f 1f 01 7d 74 61 62 6c 65   (a)V.......table
-|   3648: 74 31 5f 63 6f 6e 66 69 67 74 31 5f 63 6f 6e 66   t1_configt1_conf
-|   3664: 69 67 05 43 52 45 41 54 45 20 54 41 42 4c 45 20   ig.CREATE TABLE 
-|   3680: 27 74 31 5f 63 6f 6e 66 69 67 27 28 6b 20 50 52   't1_config'(k PR
-|   3696: 49 4d 41 52 59 20 4b 45 59 2c 20 76 29 20 57 49   IMARY KEY, v) WI
-|   3712: 54 48 4f 55 54 20 52 4f 57 49 44 5b 04 07 17 21   THOUT ROWID[...!
-|   3728: 21 01 81 01 74 61 62 6c 65 74 31 5f 64 6f 63 73   !...tablet1_docs
-|   3744: 69 7a 65 74 31 5f 64 6f 63 73 69 7a 65 04 43 52   izet1_docsize.CR
-|   3760: 45 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 64   EATE TABLE 't1_d
-|   3776: 6f 63 73 69 7a 65 27 28 69 64 20 49 4e 54 45 47   ocsize'(id INTEG
-|   3792: 45 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20   ER PRIMARY KEY, 
-|   3808: 73 7a 20 42 4c 4f 42 29 69 03 07 17 19 19 01 81   sz BLOB)i.......
-|   3824: 2d 74 61 62 6c 65 74 31 5f 69 64 78 74 31 5f 69   -tablet1_idxt1_i
-|   3840: 64 78 03 43 52 45 41 54 45 20 54 41 42 4c 45 20   dx.CREATE TABLE 
-|   3856: 27 74 31 5f 69 64 78 27 28 73 65 67 69 64 2c 20   't1_idx'(segid, 
-|   3872: 74 65 72 6d 2c 20 6f 67 6e 6f 2c 20 50 52 49 4d   term, ogno, PRIM
-|   3888: 41 52 59 20 4b 45 59 28 73 65 67 69 64 2c 20 74   ARY KEY(segid, t
-|   3904: 65 72 6d 29 29 20 57 49 54 48 4f 55 54 20 52 4f   erm)) WITHOUT RO
-|   3920: 57 49 44 55 35 07 17 1b 1b 01 81 01 74 61 62 6c   WIDU5.......tabl
-|   3936: 65 74 31 5f 64 61 74 61 74 31 5f 64 61 74 61 02   et1_datat1_data.
-|   3952: 43 52 45 41 54 45 20 54 41 42 4c 45 20 27 74 31   CREATE TABLE 't1
-|   3968: 5f 64 61 74 61 27 28 69 64 20 49 4e 54 45 47 45   _data'(id INTEGE
-|   3984: 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 62   R PRIMARY KEY, b
-|   4000: 6c 6f 63 6b 20 42 4c 4f 42 29 54 01 07 17 11 11   lock BLOB)T.....
-|   4016: 08 81 15 74 61 62 6c 65 74 31 74 31 43 52 45 41   ...tablet1t1CREA
-|   4032: 54 45 20 56 49 52 54 55 41 4c 20 54 41 42 4c 45   TE VIRTUAL TABLE
-|   4048: 20 74 31 20 55 53 49 4e 47 20 66 74 73 35 28 61    t1 USING fts5(a
-|   4064: 2c 62 2c 70 72 65 66 69 78 3d 22 31 2c 32 2c 33   ,b,prefix=.1,2,3
-|   4080: 2c 34 22 2c 20 63 6f 6e 74 65 6e 74 3d 22 22 29   ,4., content=..)
-| page 2 offset 4096
-|      0: 0d 0b 6a 00 37 09 4c 02 0f e7 09 4c 0f c6 0f a4   ..j.7.L....L....
-|     16: 0f 88 0f 6d 0f 4b 0f 2c 0f 0e 0e ec 0e cd 0e ad   ...m.K.,........
-|     32: 0e 8e 0e 6c 0e 4b 0e 29 0e 08 0d e6 0d c4 0d b5   ...l.K.)........
-|     48: 0d 97 0d 76 0d 54 0d 31 0d 15 0c f3 0c d3 0c b5   ...v.T.1........
-|     64: 0c 95 0c 73 0c 54 0c 32 0c 10 0b ee 0b cc 0b b0   ...s.T.2........
-|     80: 0b 8d 0b 7e 0b 48 0b 2e 0b 0b 0a ef 0a cc 0a 00   ...~.H..........
-|   2368: 00 00 00 00 00 00 00 00 00 00 00 00 15 0a 03 00   ................
-|   2384: 30 00 00 00 01 01 03 35 00 03 01 01 12 02 01 12   0......5........
-|   2400: 03 01 11 1c 8c 80 80 80 80 10 02 9c 3e 00 00 00   ............>...
-|   2416: 17 01 05 05 34 74 61 62 6c 03 02 03 01 04 77 68   ....4tabl.....wh
-|   2432: 65 72 03 02 06 09 1b 8c 80 80 80 80 0f 03 00 3c   er.............<
-|   2448: 00 00 00 16 05 34 66 74 73 34 03 02 02 01 04 6e   .....4fts4.....n
-|   2464: 75 6d 62 03 06 01 04 09 1b 8c 80 80 80 80 0e 03   umb.............
-|   2480: 00 3c 00 00 00 16 04 33 74 68 65 03 06 01 01 04   .<.....3the.....
-|   2496: 01 03 77 68 65 03 02 04 04 0a 1b 8c 80 80 80 80   ..whe...........
-|   2512: 0d 03 00 3c 00 00 00 16 04 33 6e 75 6d 03 06 01   ...<.....3num...
-|   2528: 01 05 01 03 74 61 62 03 02 03 04 0a 19 8c 80 80   ....tab.........
-|   2544: 80 80 0c 03 00 38 00 00 00 14 03 32 77 68 03 02   .....8.....2wh..
-|   2560: 04 00 04 33 66 74 73 03 12 02 04 07 18 8c 80 80   ...3fts.........
-|   2576: 80 80 0b 03 00 36 00 00 00 13 03 32 74 61 03 02   .....6.....2ta..
-|   2592: 03 02 01 68 03 06 01 01 04 04 07 1b 8c 80 80 80   ...h............
-|   2608: 80 0a 03 00 3c 00 00 00 16 03 32 6e 75 03 06 01   ....<.....2nu...
-|   2624: 01 05 01 02 6f 66 03 06 01 01 06 04 09 19 8c 80   ....of..........
-|   2640: 82 d0 80 09 03 00 38 00 00 00 14 03 32 66 74 03   ......8.....2ft.
-|   2656: 02 02 01 02 69 73 03 06 01 01 03 04 07 18 8c 80   ....is..........
-|   2672: 80 80 80 08 03 00 36 00 00 00 13 02 31 74 03 08   ......6.....1t..
-|   2688: 03 01 01 04 01 01 77 03 02 04 04 09 1a 8c 80 80   ......w.........
-|   2704: 80 80 07 03 00 3a 00 00 00 15 02 31 6e 03 08 01   .....:.....1n...
-|   2720: 01 02 05 01 01 6f 03 06 01 01 06 04 09 18 8c 80   .....o..........
-|   2736: 81 80 80 06 03 00 36 00 00 00 13 04 12 31 66 03   ......6......1f.
-|   2752: 02 02 01 01 69 03 06 01 01 03 05 06 1c 8c 80 80   ....i...........
-|   2768: 80 80 05 03 00 3e 00 00 00 17 04 30 74 68 65 03   .....>.....0the.
-|   2784: 06 01 01 04 01 05 77 68 65 72 65 03 02 04 0a 15   ......where.....
-|   2800: 8c 80 65 80 80 04 03 00 30 00 00 00 11 01 01 06   ..e.....0.......
-|   2816: 06 30 74 61 62 6c 65 03 02 03 07 1c 8c 80 80 80   .0table.........
-|   2832: 80 03 03 00 3e 00 00 00 17 07 30 6e 75 6d 62 65   ....>.....0numbe
-|   2848: 72 03 06 01 01 05 01 02 6f 66 03 06 04 0d 13 8c   r.......of......
-|   2864: 80 80 80 80 02 03 00 2c 00 00 00 0f fc 01 03 02   .......,........
-|   2880: 30 6e 03 06 01 00 f2 07 1b 8c 80 80 80 80 01 03   0n..............
-|   2896: 00 3c 00 00 00 16 08 30 66 74 73 34 61 75 78 03   .<.....0fts4aux.
-|   2912: 03 02 01 02 69 73 03 06 04 0c 00 00 00 18 ea 00   ....is..........
-|   2928: 00 00 01 01 02 24 00 02 01 01 12 02 01 12 08 88   .....$..........
-|   2944: 80 80 80 80 12 03 00 12 10 00 00 05 02 1c 88 80   ................
-|   2960: 80 80 80 11 03 00 3e 00 00 00 17 05 34 72 6f 77   ......>.....4row
-|   2976: 73 02 06 01 01 05 01 04 74 68 65 72 02 02 04 0b   s.......ther....
-|   2992: 15 88 80 80 80 80 10 03 00 2f ff ff f0 11 02 01   ........./......
-|   3008: 01 07 05 34 62 65 74 77 02 02 04 08 1b 88 80 80   ...4betw........
-|   3024: 80 80 0f cf 00 3c 00 00 00 16 04 04 33 72 6f 77   .....<......3row
-|   3040: 02 06 01 01 05 01 03 74 68 65 02 08 05 0a 1b 88   .......the......
-|   3056: 80 80 80 80 0d 03 00 3c 00 00 00 16 00 01 02 04   .......<........
-|   3072: 33 61 72 65 02 02 03 01 03 62 65 74 02 02 07 08   3are.....bet....
-|   3088: 1b 88 80 80 80 80 0d 03 00 3c 00 00 00 16 03 32   .........<.....2
-|   3104: 74 68 02 08 02 01 01 07 00 04 33 61 6e 64 02 06   th........3and..
-|   3120: 04 0a 1b 88 80 80 80 80 0c 03 00 3c 00 00 00 16   ...........<....
-|   3136: 03 32 69 6e 02 06 01 01 06 01 02 72 6f 02 06 01   .2in.......ro...
-|   3152: 01 05 04 09 18 88 80 80 80 80 0b 03 00 36 00 00   .............6..
-|   3168: 00 13 02 03 32 61 72 02 02 03 01 02 62 65 02 02   ....2ar.....be..
-|   3184: 04 05 07 1b 88 80 80 80 80 0a 03 00 3c 00 00 00   ............<...
-|   3200: 16 12 31 74 02 08 02 01 01 07 00 03 32 61 6e 02   ..1t........2an.
-|   3216: 06 01 01 04 09 19 88 80 80 80 80 09 03 00 38 00   ..............8.
-|   3232: 00 00 14 02 31 6e 02 06 01 01 03 01 01 72 02 06   ....1n.......r..
-|   3248: 01 01 05 04 08 17 78 80 80 80 80 08 03 00 34 10   ......x.......4.
-|   3264: 01 00 12 02 31 62 02 02 04 01 01 69 02 06 01 01   ....1b.....i....
-|   3280: 06 04 06 19 88 80 80 80 80 07 03 00 38 00 00 00   ............8...
-|   3296: 14 04 02 31 32 02 02 05 01 01 61 02 08 03 01 01   ...12.....a.....
-|   3312: 02 05 06 1b 88 80 80 80 80 06 03 00 3c 00 00 00   ............<...
-|   3328: 16 06 30 74 68 65 72 65 e7 02 02 00 02 31 31 02   ..0there.....11.
-|   3344: 06 01 01 04 0a 15 88 80 80 80 80 05 03 00 30 00   ..............0.
-|   3360: 00 00 11 01 01 05 e5 30 74 68 65 02 06 01 01 07   .......0the.....
-|   3376: 07 1c 88 80 80 80 80 04 03 00 3e 00 00 00 17 01   ..........>.....
-|   3392: 01 06 02 30 6e 02 06 01 01 03 01 04 72 6f 77 73   ...0n.......rows
-|   3408: 02 06 07 08 1b 88 80 80 80 80 03 03 00 3c 00 00   .............<..
-|   3424: 00 16 08 30 62 65 74 77 65 65 6e 02 02 04 01 02   ...0between.....
-|   3440: 69 6e 02 06 04 0c 1a 88 80 80 80 80 02 03 00 3a   in.............:
-|   3456: 00 00 00 15 04 30 61 6e 64 02 06 01 01 02 02 02   .....0and.......
-|   3472: 72 65 02 02 03 04 0a 17 88 80 80 80 80 01 03 00   re..............
-|   3488: 34 01 00 00 12 02 30 31 02 06 01 01 04 01 01 32   4.....01.......2
-|   3504: 02 02 05 04 08 08 84 80 80 80 80 12 03 00 16 00   ................
-|   3520: 00 00 05 04 1b 84 80 80 80 80 11 03 00 3c 00 00   .............<..
-|   3536: 00 16 05 34 74 61 62 6c 01 06 01 01 05 02 03 65   ...4tabl.......e
-|   3552: 72 6d 01 02 04 0b 1b 84 80 80 80 80 10 03 00 3c   rm.............<
-|   3568: 00 00 00 16 05 34 65 61 63 68 01 02 02 01 04 70   .....4each.....p
-|   3584: 72 65 73 01 02 05 04 09 1a 84 80 80 80 80 0f 03   res.............
-|   3600: 00 3a 00 00 00 15 04 33 74 65 72 01 02 04 02 02   .:.....3ter.....
-|   3616: 68 65 01 06 01 01 03 04 08 1b 84 80 80 80 80 0e   he..............
-|   3632: 03 00 3c 00 00 00 16 04 33 70 72 65 01 02 05 01   ..<.....3pre....
-|   3648: 03 74 61 62 01 06 01 01 05 04 08 1a 84 80 80 80   .tab............
-|   3664: 80 0d 03 0d 1a 00 00 00 15 04 33 66 6e 72 01 02   ..........3fnr..
-|   3680: 02 02 02 74 73 01 06 01 01 04 04 08 1b 84 80 80   ...ts...........
-|   3696: 80 80 0c 03 00 3c 00 00 00 16 03 32 74 68 01 06   .....<.....2th..
-|   3712: 01 01 03 00 04 33 65 61 63 01 02 03 04 09 18 84   .....3eac.......
-|   3728: 80 80 80 80 0b 03 00 36 00 00 00 13 03 32 74 61   .......6.....2ta
-|   3744: 01 06 01 01 05 02 01 65 01 02 04 04 09 19 84 80   .......e........
-|   3760: 80 80 80 0a 03 00 38 00 00 00 14 03 30 c9 6e 01   ......8.....0.n.
-|   3776: 06 01 01 02 01 02 70 72 01 02 05 04 09 18 84 80   ......pr........
-|   3792: 80 80 80 09 03 00 36 00 00 00 13 03 32 66 6f 01   ......6.....2fo.
-|   3808: 02 0b e2 01 74 01 06 01 01 04 04 07 1b 84 80 80   ....t...........
-|   3824: 86 f0 08 03 00 3c 00 00 00 16 02 31 74 01 0a 04   .....<.....1t...
-|   3840: 01 01 03 04 00 03 32 65 61 01 02 03 04 0a 17 84   ......2ea.......
-|   3856: 80 80 80 80 07 03 00 34 00 00 00 12 02 31 69 01   .......4.....1i.
-|   3872: 06 01 01 02 01 01 70 01 02 05 04 08 18 84 80 80   ......p.........
-|   3888: 80 80 06 03 00 36 00 00 00 13 02 31 65 01 02 03   .....6.....1e...
-|   3904: 01 01 66 01 08 02 01 01 04 04 06 1b 84 80 80 80   ..f.............
-|   3920: 80 05 03 00 3c 00 00 00 16 05 30 74 65 72 6d 01   ....<.....0term.
-|   3936: 02 04 02 02 68 65 01 06 01 01 03 04 09 14 84 80   ....he..........
-|   3952: 80 80 80 04 03 00 2e 00 00 00 10 06 30 74 61 62   ............0tab
-|   3968: 6c 65 01 06 01 01 05 04 15 84 7f 80 80 80 03 03   le..............
-|   3984: 00 30 00 00 00 11 02 08 30 70 72 65 73 65 6e 74   .0......0present
-|   4000: 01 02 05 05 1b 84 80 22 80 80 02 03 00 3c 00 00   .............<..
-|   4016: 00 16 04 30 66 74 73 01 06 01 01 04 01 02 69 6e   ...0fts.......in
-|   4032: 01 06 01 01 04 0a 1a 84 80 80 80 80 01 03 00 3a   ...............:
-|   4048: 00 00 00 15 05 30 65 61 63 68 01 02 03 01 03 66   .....0each.....f
-|   4064: 6f 72 01 02 02 04 09 06 01 03 00 12 03 0b 0f 00   or..............
-|   4080: 00 08 8c 80 80 80 80 11 03 00 16 00 00 00 05 04   ................
-| page 3 offset 8192
-|      0: 0a 00 00 00 32 0e 4f 00 0f fa 0f f1 0f e9 0f e1   ....2.O.........
-|     16: 0f d8 0f d1 0f c9 0f c1 0f b9 0f b1 0f a9 0f a0   ................
-|     32: 0f 98 0f 90 0f 87 0f 80 0f 78 0f 71 0f 68 0f 5f   .........x.q.h._
-|     48: 0f 56 0f 00 00 00 00 00 00 00 00 00 00 00 00 00   .V..............
-|   3392: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08   ................
-|   3408: 04 01 10 01 03 34 74 20 07 04 01 0e 01 03 34 1e   .....4t ......4.
-|   3424: 09 04 01 12 01 03 33 74 68 1c 08 04 01 10 01 03   ......3th.......
-|   3440: 34 6e 1a 08 04 01 10 01 03 32 67 18 08 04 01 10   4n.......2g.....
-|   3456: 01 03 32 74 16 08 04 01 10 01 03 32 6e 14 07 04   ..2t.......2n...
-|   3472: 01 0e 01 03 32 12 08 04 01 10 01 03 31 74 10 08   ....2.......1t..
-|   3488: 04 01 10 01 03 31 6e 0e 07 04 01 0e 01 03 31 0c   .....1n.......1.
-|   3504: 09 04 01 12 01 03 30 74 68 0a 08 04 01 10 01 03   ......0th.......
-|   3520: 30 74 08 09 04 01 12 01 03 30 6e 75 06 08 04 01   0t.......0nu....
-|   3536: 10 01 03 30 6e 04 06 04 01 0c 01 03 02 08 04 01   ...0n...........
-|   3552: 10 01 02 34 72 22 07 04 01 0e 01 02 34 20 08 04   ...4r.......4 ..
-|   3568: 01 10 01 02 33 72 1e 09 04 01 12 01 02 33 61 72   ....3r.......3ar
-|   3584: 1c 18 04 01 10 01 02 32 74 1a 08 04 01 10 01 02   .......2t.......
-|   3600: 32 69 18 09 04 01 12 01 02 32 61 72 16 08 04 01   2i.......2ar....
-|   3616: 10 01 02 31 74 2a 08 04 01 0f 01 02 31 6e 12 0a   ...1t*......1n..
-|   3632: d4 01 10 01 02 31 62 10 08 04 01 10 01 02 31 32   .....1b.......12
-|   3648: 0e 0b 04 01 16 01 02 30 74 68 65 72 0c 08 04 01   .......0ther....
-|   3664: 10 01 02 30 74 0a 08 04 01 10 01 02 30 6e 08 08   ...0t.......0n..
-|   3680: 04 01 10 01 02 30 62 06 08 04 01 10 01 02 30 61   .....0b.......0a
-|   3696: 04 06 03 f1 0c 01 02 02 07 04 09 10 01 34 74 22   .............4t.
-|   3712: 06 04 09 0e 01 34 20 08 04 09 12 01 33 74 65 1e   .....4 .....3te.
-|   3728: 07 04 09 10 01 33 70 1c 07 04 09 10 01 33 66 1a   .....3p......3f.
-|   3744: 08 04 09 12 01 32 74 68 18 07 04 09 10 01 32 74   .....2th......2t
-|   3760: 16 07 04 09 10 01 32 69 14 07 04 09 10 01 32 66   ......2i......2f
-|   3776: 12 07 04 09 10 01 31 74 10 07 04 09 10 01 31 69   ......1t......1i
-|   3792: 0e 06 04 09 0e 01 31 0c 08 04 09 12 01 30 74 65   ......1......0te
-|   3808: 0a 07 04 09 10 01 30 74 08 07 04 09 10 01 30 70   ......0t......0p
-|   3824: 06 08 04 09 1e 61 30 66 74 04 05 00 00 00 00 00   .....a0ft.......
-| page 4 offset 12288
-|   4064: 00 00 00 00 00 00 00 00 00 00 00 05 03 03 00 10   ................
-|   4080: 03 05 05 02 03 00 10 04 06 05 01 03 00 10 04 04   ................
-| page 5 offset 16384
-|      0: 0a 00 00 00 02 0f eb 00 0f eb 0f f4 00 00 00 00   ................
-|   4064: 00 00 00 00 00 00 00 00 00 00 00 08 03 15 01 70   ...............p
-|   4080: 67 73 7a 18 0b 03 1b 01 76 65 72 73 69 6f 6e 04   gsz.....version.
-| end crash-ef6738247b1344.db
-}]} {}
-
-
-do_catchsql_test 4.1 {
-  BEGIN;
-  REPLACE INTO t1(rowid,b,a,rowid) VALUES(200,1,2,3);
-} {1 {database disk image is malformed}}
-
-do_catchsql_test 4.2 {
-  INSERT INTO t1(t1) VALUES('delete-all');
-} {1 {database disk image is malformed}}
-do_catchsql_test 4.3 {
-  REPLACE INTO t1(rowid,b,rowid,a) VALUES(200,1,2,3);
-} {1 {database disk image is malformed}}
-do_catchsql_test 4.4 {
-  REPLACE INTO t1(rowid,b,a,rowid) VALUES(0,1,2,3);
-} {1 {database disk image is malformed}}
-do_catchsql_test 4.5 {
-  REPLACE INTO t1(rowid,a,b,rowid) VALUES(200,1,2,3);
-} {1 {database disk image is malformed}}
-
-sqlite3_fts5_may_be_corrupt 0
-finish_test
-
@@ -1,54 +0,0 @@
-# 2015 Apr 24
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-# This file tests that FTS5 handles corrupt databases (i.e. internal
-# inconsistencies in the backing tables) correctly. In this case 
-# "correctly" means without crashing.
-#
-
-source [file join [file dirname [info script]] fts5_common.tcl]
-set testprefix fts5corrupt6
-
-# If SQLITE_ENABLE_FTS5 is defined, omit this file.
-ifcapable !fts5 {
-  finish_test
-  return
-}
-sqlite3_fts5_may_be_corrupt 1
-database_may_be_corrupt
-
-proc editblock {block} {
-  binary format Sa* 20000 [string range $block 2 end]
-}
-db func editblock editblock
-
-do_execsql_test 1.0 {
-  CREATE VIRTUAL TABLE ft USING fts5(abc, def);
-  WITH a(i) AS (
-    SELECT 1 UNION ALL SELECT i+1 FROM a WHERE i<1000
-  )
-  INSERT INTO ft SELECT 
-      'abc abc abc abc abc abc abc abc abc abc',
-      'def def def def def def def def def def'
-  FROM a;
-  UPDATE ft_data SET block = editblock(block) WHERE id=(
-    SELECT id FROM ft_data ORDER BY id LIMIT 1 OFFSET 5
-  );
-}
-
-do_catchsql_test 1.1 {
-  SELECT rowid FROM ft('def') ORDER BY rowid DESC LIMIT 1 OFFSET 9999;
-} {1 {database disk image is malformed}}
-
-
-sqlite3_fts5_may_be_corrupt 0
-finish_test
-
@@ -91,27 +91,6 @@ do_catchsql_test 2.4 {
  SELECT rowid FROM test_idx WHERE test_idx MATCH 'two' ORDER BY rank;
 } {1 {database disk image is malformed}}

-#-------------------------------------------------------------------------
-reset_db
-do_execsql_test 3.0 {
-  CREATE VIRTUAL TABLE tx USING fts5(a, b, c, d, content=);
-  INSERT INTO tx(rowid, a, c) VALUES(1, 'abc def', 'a b c');
-  INSERT INTO tx(rowid, a, c) VALUES(5, 'a b c', 'a b d def');
-}
-do_execsql_test 3.1 {
-  INSERT INTO tx(tx, rowid, a, b, c, d) 
-    VALUES('delete', 5, 'a b c', NULL, 'a b d def', NULL);
-}
-do_execsql_test 3.2 {
-  INSERT INTO tx(tx) VALUES('integrity-check');
-}
-do_execsql_test 3.3 {
-  INSERT INTO tx(tx, rowid, a, b, c, d) 
-    VALUES('delete', 1, 'abc def', NULL, 'a b c', NULL);
-}
-do_execsql_test 3.4 {
-  INSERT INTO tx(tx) VALUES('integrity-check');
-}
+

 finish_test
-
@@ -212,10 +212,6 @@ do_catchsql_test 4.1 {
  SELECT * FROM t4('a:a')
 } {1 {fts5: column queries are not supported (detail=none)}}

-do_catchsql_test 4.2 {
-  SELECT * FROM t4('a:a &')
-} {1 {fts5: syntax error near "&"}}
-
 #-------------------------------------------------------------------------
 # Test that for the same content detail=none uses less space than 
 # detail=col, and that detail=col uses less space than detail=full
@@ -42,26 +42,5 @@ do_execsql_test 1.2 {
  INSERT INTO ccc(ccc) VALUES('integrity-check');
 }

-#-------------------------------------------------------------------------
-#
-reset_db
-do_execsql_test 2.1 {
-  CREATE VIRTUAL TABLE tx USING fts5(x);
-}
-
-set doc [string repeat "abc " 5000]
-do_execsql_test 2.2 {
-  BEGIN;
-    INSERT INTO tx(rowid, x) VALUES(-9000000000000000000, $doc);
-    INSERT INTO tx(rowid, x) VALUES(9000000000000000000, $doc);
-  COMMIT;
-}
-
-do_execsql_test 2.3 {
-  SELECT rowid FROM tx('abc');
-} {
-  -9000000000000000000
-   9000000000000000000
-}

 finish_test
@@ -83,7 +83,7 @@ for {set i 0} {$i < 255} {incr i} {

 do_execsql_test 3.0 {
  CREATE VIRTUAL TABLE e1 USING fts5(text, tokenize = 'porter unicode61');
-  INSERT INTO e1 VALUES ('just a few words with a / inside');
+  INSERT INTO e1 VALUES ("just a few words with a / inside");
 }
 do_execsql_test 3.1 {
  SELECT rowid, bm25(e1) FROM e1 WHERE e1 MATCH '"just"' ORDER BY rank;
@@ -188,11 +188,11 @@ foreach {tn pgsz} {
    INSERT INTO hh(hh, rank) VALUES('pgsz', $pgsz);

    WITH s(i) AS (SELECT 0 UNION ALL SELECT i+1 FROM s WHERE i<999)
-     INSERT INTO hh SELECT printf('%.3d%.3d%.3d %.3d%.3d%.3d',i,i,i,i+1,i+1,i+1)
+     INSERT INTO hh SELECT printf("%.3d%.3d%.3d %.3d%.3d%.3d",i,i,i,i+1,i+1,i+1)
     FROM s;

    WITH s(i) AS (SELECT 0 UNION ALL SELECT i+1 FROM s WHERE i<999)
-     INSERT INTO hh SELECT printf('%.3d%.3d%.3d %.3d%.3d%.3d',i,i,i,i+1,i+1,i+1)
+     INSERT INTO hh SELECT printf("%.3d%.3d%.3d %.3d%.3d%.3d",i,i,i,i+1,i+1,i+1)
     FROM s;

    INSERT INTO hh(hh) VALUES('optimize');
@@ -323,34 +323,5 @@ do_execsql_test 12.3 {
  SELECT * FROM t2 JOIN ft USING (ft)
 } {3 4 b b}

-#-------------------------------------------------------------------------
-# Forum post https://sqlite.org/forum/forumpost/21127c1160
-#
-reset_db
-sqlite3_db_config db DEFENSIVE 1
-
-do_execsql_test 13.0 {
-  CREATE TABLE a (id INTEGER PRIMARY KEY, name TEXT);
-  CREATE VIRTUAL TABLE b USING fts5(name);
-  CREATE TRIGGER a_trigger AFTER INSERT ON a BEGIN 
-    INSERT INTO b (name) VALUES ('foo');
-  END;
-}
-
-do_test 13.1 {
-  set ::STMT [
-    sqlite3_prepare db "INSERT INTO a VALUES (1, 'foo') RETURNING id;" -1 dummy
-  ]
-  sqlite3_step $::STMT
-} {SQLITE_ROW}
-
-do_test 13.2 {
-  sqlite3_finalize $::STMT
-} {SQLITE_OK}
-
-do_test 13.3 {
-  sqlite3_errmsg db
-} {not an error}
-
 finish_test

@@ -30,23 +30,23 @@ do_eqp_test 1.1 {
  SELECT * FROM t1, f1 WHERE f1 MATCH t1.x
 } {
  QUERY PLAN
-  |--SCAN t1
-  `--SCAN f1 VIRTUAL TABLE INDEX 0:M1
+  |--SCAN TABLE t1
+  `--SCAN TABLE f1 VIRTUAL TABLE INDEX 0:M1
 }

 do_eqp_test 1.2 {
  SELECT * FROM t1, f1 WHERE f1 > t1.x
 } {
  QUERY PLAN
-  |--SCAN f1 VIRTUAL TABLE INDEX 0:
-  `--SCAN t1
+  |--SCAN TABLE f1 VIRTUAL TABLE INDEX 0:
+  `--SCAN TABLE t1
 }

 do_eqp_test 1.3 {
  SELECT * FROM f1 WHERE f1 MATCH ? ORDER BY ff
 } {
  QUERY PLAN
-  |--SCAN f1 VIRTUAL TABLE INDEX 0:M1
+  |--SCAN TABLE f1 VIRTUAL TABLE INDEX 0:M1
  `--USE TEMP B-TREE FOR ORDER BY
 }

@@ -54,12 +54,12 @@ do_eqp_test 1.4 {
  SELECT * FROM f1 ORDER BY rank
 } {
  QUERY PLAN
-  |--SCAN f1 VIRTUAL TABLE INDEX 0:
+  |--SCAN TABLE f1 VIRTUAL TABLE INDEX 0:
  `--USE TEMP B-TREE FOR ORDER BY
 }

 do_eqp_test 1.5 {
  SELECT * FROM f1 WHERE rank MATCH ?
-} {SCAN f1 VIRTUAL TABLE INDEX 0:r}
+} {SCAN TABLE f1 VIRTUAL TABLE INDEX 0:r}

 finish_test
@@ -1,57 +0,0 @@
-# 2020 Dec 3
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-# This file contains tests focused on prefix indexes.
-#
-
-source [file join [file dirname [info script]] fts5_common.tcl]
-set testprefix fts5prefix2
-
-# If SQLITE_ENABLE_FTS5 is defined, omit this file.
-ifcapable !fts5 {
-  finish_test
-  return
-}
-
-foreach p {3 2 1} {
-  reset_db
-    do_execsql_test 1.$p.0 "
-    CREATE VIRTUAL TABLE t1 USING fts5(xyz, prefix=$p);
-  "
-  do_execsql_test 1.$p.1 {
-    INSERT INTO t1 VALUES
-      ('May you do good and not evil.'),
-      ('May you find forgiveness for yourself and forgive others.'),
-      ('May you share freely, never taking more than you give f.');
-  }
-
-  do_execsql_test 1.$p.2 {
-    SELECT highlight(t1, 0, '[', ']') FROM t1('f*');
-  } {
-    {May you [find] [forgiveness] [for] yourself and [forgive] others.}
-    {May you share [freely], never taking more than you give [f].}
-  }
-}
-
-do_execsql_test 2.0 {
-  CREATE VIRTUAL TABLE t2 USING fts5(one, prefix=3);
-  INSERT INTO t2 VALUES('top');
-  INSERT INTO t2 VALUES('to');
-  INSERT INTO t2 VALUES('tommy');
-}
-
-do_execsql_test 2.1 {
-  SELECT * FROM t2('to*');
-} {top to tommy}
-
-
-
-finish_test
@@ -192,9 +192,10 @@ do_eqp_test 6.2 {
 } {VIRTUAL TABLE INDEX 0:G0}
 do_eqp_test 6.3 {
  SELECT * FROM ci1 WHERE x LIKE ?
-} {{SCAN ci1 VIRTUAL TABLE INDEX 0:}}
+} {{SCAN TABLE ci1 VIRTUAL TABLE INDEX 0:}}
 do_eqp_test 6.4 {
  SELECT * FROM ci1 WHERE x GLOB ?
 } {VIRTUAL TABLE INDEX 0:G0}

 finish_test
+
@@ -234,53 +234,4 @@ ifcapable fts3 {
  } {1 {no such fts5 table: main.nosuchtable}}
 }

-#-------------------------------------------------------------------------
-# Check that the fts5 table cannot be written while there are vocab 
-# cursors open.
-reset_db
-do_execsql_test 5.0 {
-  CREATE VIRTUAL TABLE t1 USING fts5(a);
-  CREATE VIRTUAL TABLE v1 USING fts5vocab(t1, instance);
-  INSERT INTO t1 VALUES('one'), ('two'), ('three'), ('four');
-}
-
-do_test 5.1 {
-  list [catch {
-    db eval { SELECT * FROM v1 } {
-      db eval {INSERT INTO t1 VALUES('five')}
-    }
-  } msg] $msg
-} {1 {query aborted}}
-
-do_execsql_test 5.2 {
-  SELECT * FROM t1
-} {one two three four five}
-
-#-------------------------------------------------------------------------
-# Check that the fts5 table cannot be written while there are vocab 
-# cursors open.
-reset_db
-do_execsql_test 5.0 {
-  CREATE VIRTUAL TABLE t1 USING fts5(a);
-  CREATE VIRTUAL TABLE v1 USING fts5vocab(t1, instance);
-  WITH s(i) AS (
-    VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<10000
-  )
-  INSERT INTO t1 SELECT 
-    'State Emergency Service (SES), Rural Fire Service (RFS) and Volunteers'
-  FROM s;
-}
-
-do_catchsql_test 5.1 {
-  INSERT INTO t1 SELECT rowid FROM v1
-} {1 {query aborted}}
-
-do_catchsql_test 5.2 {
-  DELETE FROM t1 WHERE rowid>100;
-  INSERT INTO t1 SELECT randomblob(3000) FROM v1
-} {1 {query aborted}}
-
-
 finish_test
-
-
@@ -60,8 +60,7 @@ proc fts5_source_id {zDir} {

  set L [split [readfile [file join $top manifest]]] 
  set date [lindex $L [expr [lsearch -exact $L D]+1]]
-  set idx [expr {[string last . $date]-1}]
-  set date [string range $date 0 $idx]
+  set date [string range $date 0 [string last . $date]-1]
  set date [string map {T { }} $date]

  return "fts5: $date $uuid"
@@ -153,12 +153,18 @@ SQLite. Documentation follows.
    the ICU extension LIKE operator is 50000, defined in source 
    file "icu.c".

-  3.3 Collation Sequence Security
+  3.3 Collation Sequence Security Issue

    Internally, SQLite assumes that indices stored in database files
    are sorted according to the collation sequence indicated by the
    SQL schema. Changing the definition of a collation sequence after
    an index has been built is therefore equivalent to database
-    corruption. The SQLite library is well tested for robustness in
-    the fact of database corruption.  Database corruption may well
-    lead to incorrect answers, but should not cause memory errors.
+    corruption. The SQLite library is not very well tested under
+    these conditions, and may contain potential buffer overruns
+    or other programming errors that could be exploited by a malicious
+    programmer.
+
+    If the ICU extension is used in an environment where potentially
+    malicious users may execute arbitrary SQL (i.e. gears), they
+    should be prevented from invoking the icu_load_collation() function,
+    possibly using the authorisation callback.
@@ -26,7 +26,7 @@
 **
 ** The virtual table contains read-only hidden columns:
 **
-**     lsm1_key       A BLOB which is the raw LSM key.  If the "keytype"
+**     lsm1_key	      A BLOB which is the raw LSM key.  If the "keytype"
 **                    is BLOB or TEXT then this column is exactly the
 **                    same as the key.  For the UINT keytype, this column
 **                    will be a variable-length integer encoding of the key.
@@ -14,23 +14,24 @@
 ** appended onto the end of some other file, such as an executable.
 **
 ** A special record must appear at the end of the file that identifies the
-** file as an appended database and provides the offset to the first page
-** of the exposed content. (Or, it is the length of the content prefix.)
-** For best performance page 1 should be located at a disk page boundary,
-** though that is not required.
+** file as an appended database and provides an offset to page 1.  For
+** best performance page 1 should be located at a disk page boundary, though
+** that is not required.
 **
 ** When opening a database using this VFS, the connection might treat
-** the file as an ordinary SQLite database, or it might treat it as a
-** database appended onto some other file.  The decision is made by
-** applying the following rules in order:
+** the file as an ordinary SQLite database, or it might treat is as a
+** database appended onto some other file.  Here are the rules:
 **
-**  (1)  An empty file is an ordinary database.
+**  (1)  When opening a new empty file, that file is treated as an ordinary
+**       database.
 **
-**  (2)  If the file ends with the appendvfs trailer string
-**       "Start-Of-SQLite3-NNNNNNNN" that file is an appended database.
+**  (2)  When opening a file that begins with the standard SQLite prefix
+**       string "SQLite format 3", that file is treated as an ordinary
+**       database.
 **
-**  (3)  If the file begins with the standard SQLite prefix string
-**       "SQLite format 3", that file is an ordinary database.
+**  (3)  When opening a file that ends with the appendvfs trailer string
+**       "Start-Of-SQLite3-NNNNNNNN" that file is treated as an appended
+**       database.
 **
 **  (4)  If none of the above apply and the SQLITE_OPEN_CREATE flag is
 **       set, then a new database is appended to the already existing file.
@@ -38,13 +39,13 @@
 **  (5)  Otherwise, SQLITE_CANTOPEN is returned.
 **
 ** To avoid unnecessary complications with the PENDING_BYTE, the size of
-** the file containing the database is limited to 1GiB. (1073741824 bytes)
-** This VFS will not read or write past the 1GiB mark.  This restriction
-** might be lifted in future versions.  For now, if you need a larger
-** database, then keep it in a separate file.
+** the file containing the database is limited to 1GB.  This VFS will refuse
+** to read or write past the 1GB mark.  This restriction might be lifted in
+** future versions.  For now, if you need a large database, then keep the
+** database in a separate file.
 **
-** If the file being opened is a plain database (not an appended one), then
-** this shim is a pass-through into the default underlying VFS. (rule 3)
+** If the file being opened is not an appended database, then this shim is
+** a pass-through into the default underlying VFS.
 **/
 #include "sqlite3ext.h"
 SQLITE_EXTENSION_INIT1
@@ -57,27 +58,17 @@ SQLITE_EXTENSION_INIT1
 **     123456789 123456789 12345
 **
 ** The NNNNNNNN represents a 64-bit big-endian unsigned integer which is
-** the offset to page 1, and also the length of the prefix content.
+** the offset to page 1.
 */
 #define APND_MARK_PREFIX     "Start-Of-SQLite3-"
 #define APND_MARK_PREFIX_SZ  17
-#define APND_MARK_FOS_SZ      8
-#define APND_MARK_SIZE       (APND_MARK_PREFIX_SZ+APND_MARK_FOS_SZ)
+#define APND_MARK_SIZE       25

 /*
 ** Maximum size of the combined prefix + database + append-mark.  This
 ** must be less than 0x40000000 to avoid locking issues on Windows.
 */
-#define APND_MAX_SIZE  (0x40000000)
-
-/*
-** Try to align the database to an even multiple of APND_ROUNDUP bytes.
-*/
-#ifndef APND_ROUNDUP
-#define APND_ROUNDUP 4096
-#endif
-#define APND_ALIGN_MASK         ((sqlite3_int64)(APND_ROUNDUP-1))
-#define APND_START_ROUNDUP(fsz) (((fsz)+APND_ALIGN_MASK) & ~APND_ALIGN_MASK)
+#define APND_MAX_SIZE  (65536*15259)

 /*
 ** Forward declaration of objects used by this utility
@@ -91,45 +82,11 @@ typedef struct ApndFile ApndFile;
 #define ORIGVFS(p)  ((sqlite3_vfs*)((p)->pAppData))
 #define ORIGFILE(p) ((sqlite3_file*)(((ApndFile*)(p))+1))

-/* An open appendvfs file
-**
-** An instance of this structure describes the appended database file.
-** A separate sqlite3_file object is always appended. The appended
-** sqlite3_file object (which can be accessed using ORIGFILE()) describes
-** the entire file, including the prefix, the database, and the
-** append-mark.
-**
-** The structure of an AppendVFS database is like this:
-**
-**   +-------------+---------+----------+-------------+
-**   | prefix-file | padding | database | append-mark |
-**   +-------------+---------+----------+-------------+
-**                           ^          ^
-**                           |          |
-**                         iPgOne      iMark
-**
-**
-** "prefix file" -  file onto which the database has been appended.
-** "padding"     -  zero or more bytes inserted so that "database"
-**                  starts on an APND_ROUNDUP boundary
-** "database"    -  The SQLite database file
-** "append-mark" -  The 25-byte "Start-Of-SQLite3-NNNNNNNN" that indicates
-**                  the offset from the start of prefix-file to the start
-**                  of "database".
-**
-** The size of the database is iMark - iPgOne.
-**
-** The NNNNNNNN in the "Start-Of-SQLite3-NNNNNNNN" suffix is the value
-** of iPgOne stored as a big-ending 64-bit integer.
-**
-** iMark will be the size of the underlying file minus 25 (APND_MARKSIZE).
-** Or, iMark is -1 to indicate that it has not yet been written.
-*/
+/* An open file */
 struct ApndFile {
-  sqlite3_file base;        /* Subclass.  MUST BE FIRST! */
-  sqlite3_int64 iPgOne;     /* Offset to the start of the database */
-  sqlite3_int64 iMark;      /* Offset of the append mark.  -1 if unwritten */
-  /* Always followed by another sqlite3_file that describes the whole file */
+  sqlite3_file base;              /* IO methods */
+  sqlite3_int64 iPgOne;           /* File offset to page 1 */
+  sqlite3_int64 iMark;            /* Start of the append-mark */
 };

 /*
@@ -221,6 +178,8 @@ static const sqlite3_io_methods apnd_io_methods = {
  apndUnfetch                     /* xUnfetch */
 };

+
+
 /*
 ** Close an apnd-file.
 */
@@ -238,37 +197,22 @@ static int apndRead(
  int iAmt, 
  sqlite_int64 iOfst
 ){
-  ApndFile *paf = (ApndFile *)pFile;
+  ApndFile *p = (ApndFile *)pFile;
  pFile = ORIGFILE(pFile);
-  return pFile->pMethods->xRead(pFile, zBuf, iAmt, paf->iPgOne+iOfst);
+  return pFile->pMethods->xRead(pFile, zBuf, iAmt, iOfst+p->iPgOne);
 }

 /*
-** Add the append-mark onto what should become the end of the file.
-*  If and only if this succeeds, internal ApndFile.iMark is updated.
-*  Parameter iWriteEnd is the appendvfs-relative offset of the new mark.
+** Add the append-mark onto the end of the file.
 */
-static int apndWriteMark(
-  ApndFile *paf,
-  sqlite3_file *pFile,
-  sqlite_int64 iWriteEnd
-){
-  sqlite_int64 iPgOne = paf->iPgOne;
+static int apndWriteMark(ApndFile *p, sqlite3_file *pFile){
+  int i;
  unsigned char a[APND_MARK_SIZE];
-  int i = APND_MARK_FOS_SZ;
-  int rc;
-  assert(pFile == ORIGFILE(paf));
  memcpy(a, APND_MARK_PREFIX, APND_MARK_PREFIX_SZ);
-  while( --i >= 0 ){
-    a[APND_MARK_PREFIX_SZ+i] = (unsigned char)(iPgOne & 0xff);
-    iPgOne >>= 8;
+  for(i=0; i<8; i++){
+    a[APND_MARK_PREFIX_SZ+i] = (p->iPgOne >> (56 - i*8)) & 0xff;
  }
-  iWriteEnd += paf->iPgOne;
-  if( SQLITE_OK==(rc = pFile->pMethods->xWrite
-                  (pFile, a, APND_MARK_SIZE, iWriteEnd)) ){
-    paf->iMark = iWriteEnd;
-  }
-  return rc;
+  return pFile->pMethods->xWrite(pFile, a, APND_MARK_SIZE, p->iMark);
 }

 /*
@@ -280,28 +224,38 @@ static int apndWrite(
  int iAmt,
  sqlite_int64 iOfst
 ){
-  ApndFile *paf = (ApndFile *)pFile;
-  sqlite_int64 iWriteEnd = iOfst + iAmt;
-  if( iWriteEnd>=APND_MAX_SIZE ) return SQLITE_FULL;
+  int rc;
+  ApndFile *p = (ApndFile *)pFile;
  pFile = ORIGFILE(pFile);
-  /* If append-mark is absent or will be overwritten, write it. */
-  if( paf->iMark < 0 || paf->iPgOne + iWriteEnd > paf->iMark ){
-    int rc = apndWriteMark(paf, pFile, iWriteEnd);
-    if( SQLITE_OK!=rc ) return rc;
+  if( iOfst+iAmt>=APND_MAX_SIZE ) return SQLITE_FULL;
+  rc = pFile->pMethods->xWrite(pFile, zBuf, iAmt, iOfst+p->iPgOne);
+  if( rc==SQLITE_OK &&  iOfst + iAmt + p->iPgOne > p->iMark ){
+    sqlite3_int64 sz = 0;
+    rc = pFile->pMethods->xFileSize(pFile, &sz);
+    if( rc==SQLITE_OK ){
+      p->iMark = sz - APND_MARK_SIZE;
+      if( iOfst + iAmt + p->iPgOne > p->iMark ){
+        p->iMark = p->iPgOne + iOfst + iAmt;
+        rc = apndWriteMark(p, pFile);
+      }
+    }
  }
-  return pFile->pMethods->xWrite(pFile, zBuf, iAmt, paf->iPgOne+iOfst);
+  return rc;
 }

 /*
 ** Truncate an apnd-file.
 */
 static int apndTruncate(sqlite3_file *pFile, sqlite_int64 size){
-  ApndFile *paf = (ApndFile *)pFile;
+  int rc;
+  ApndFile *p = (ApndFile *)pFile;
  pFile = ORIGFILE(pFile);
-  /* The append mark goes out first so truncate failure does not lose it. */
-  if( SQLITE_OK!=apndWriteMark(paf, pFile, size) ) return SQLITE_IOERR;
-  /* Truncate underlying file just past append mark */
-  return pFile->pMethods->xTruncate(pFile, paf->iMark+APND_MARK_SIZE);
+  rc = pFile->pMethods->xTruncate(pFile, size+p->iPgOne+APND_MARK_SIZE);
+  if( rc==SQLITE_OK ){
+    p->iMark = p->iPgOne+size;
+    rc = apndWriteMark(p, pFile);
+  }
+  return rc;
 }

 /*
@@ -314,12 +268,16 @@ static int apndSync(sqlite3_file *pFile, int flags){

 /*
 ** Return the current file-size of an apnd-file.
-** If the append mark is not yet there, the file-size is 0.
 */
 static int apndFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){
-  ApndFile *paf = (ApndFile *)pFile;
-  *pSize = ( paf->iMark >= 0 )? (paf->iMark - paf->iPgOne) : 0;
-  return SQLITE_OK;
+  ApndFile *p = (ApndFile *)pFile;
+  int rc;
+  pFile = ORIGFILE(p);
+  rc = pFile->pMethods->xFileSize(pFile, pSize);
+  if( rc==SQLITE_OK && p->iPgOne ){
+    *pSize -= p->iPgOne + APND_MARK_SIZE;
+  }
+  return rc;
 }

 /*
@@ -350,13 +308,12 @@ static int apndCheckReservedLock(sqlite3_file *pFile, int *pResOut){
 ** File control method. For custom operations on an apnd-file.
 */
 static int apndFileControl(sqlite3_file *pFile, int op, void *pArg){
-  ApndFile *paf = (ApndFile *)pFile;
+  ApndFile *p = (ApndFile *)pFile;
  int rc;
  pFile = ORIGFILE(pFile);
-  if( op==SQLITE_FCNTL_SIZE_HINT ) *(sqlite3_int64*)pArg += paf->iPgOne;
  rc = pFile->pMethods->xFileControl(pFile, op, pArg);
  if( rc==SQLITE_OK && op==SQLITE_FCNTL_VFSNAME ){
-    *(char**)pArg = sqlite3_mprintf("apnd(%lld)/%z", paf->iPgOne,*(char**)pArg);
+    *(char**)pArg = sqlite3_mprintf("apnd(%lld)/%z", p->iPgOne, *(char**)pArg);
  }
  return rc;
 }
@@ -415,9 +372,6 @@ static int apndFetch(
  void **pp
 ){
  ApndFile *p = (ApndFile *)pFile;
-  if( p->iMark < 0 || iOfst+iAmt > p->iMark ){
-    return SQLITE_IOERR; /* Cannot read what is not yet there. */
-  }
  pFile = ORIGFILE(pFile);
  return pFile->pMethods->xFetch(pFile, iOfst+p->iPgOne, iAmt, pp);
 }
@@ -429,155 +383,95 @@ static int apndUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){
  return pFile->pMethods->xUnfetch(pFile, iOfst+p->iPgOne, pPage);
 }

+/*
+** Check to see if the file is an ordinary SQLite database file.
+*/
+static int apndIsOrdinaryDatabaseFile(sqlite3_int64 sz, sqlite3_file *pFile){
+  int rc;
+  char zHdr[16];
+  static const char aSqliteHdr[] = "SQLite format 3";
+  if( sz<512 ) return 0;
+  rc = pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), 0);
+  if( rc ) return 0;
+  return memcmp(zHdr, aSqliteHdr, sizeof(zHdr))==0;
+}
+
 /*
 ** Try to read the append-mark off the end of a file.  Return the
-** start of the appended database if the append-mark is present.
-** If there is no valid append-mark, return -1;
-**
-** An append-mark is only valid if the NNNNNNNN start-of-database offset
-** indicates that the appended database contains at least one page.  The
-** start-of-database value must be a multiple of 512.
+** start of the appended database if the append-mark is present.  If
+** there is no append-mark, return -1;
 */
 static sqlite3_int64 apndReadMark(sqlite3_int64 sz, sqlite3_file *pFile){
  int rc, i;
  sqlite3_int64 iMark;
-  int msbs = 8 * (APND_MARK_FOS_SZ-1);
  unsigned char a[APND_MARK_SIZE];

-  if( APND_MARK_SIZE!=(sz & 0x1ff) ) return -1;
+  if( sz<=APND_MARK_SIZE ) return -1;
  rc = pFile->pMethods->xRead(pFile, a, APND_MARK_SIZE, sz-APND_MARK_SIZE);
  if( rc ) return -1;
  if( memcmp(a, APND_MARK_PREFIX, APND_MARK_PREFIX_SZ)!=0 ) return -1;
-  iMark = ((sqlite3_int64)(a[APND_MARK_PREFIX_SZ] & 0x7f)) << msbs;
-  for(i=1; i<8; i++){
-    msbs -= 8;
-    iMark |= (sqlite3_int64)a[APND_MARK_PREFIX_SZ+i]<<msbs;
+  iMark = ((sqlite3_int64)(a[APND_MARK_PREFIX_SZ]&0x7f))<<56;
+  for(i=1; i<8; i++){    
+    iMark += (sqlite3_int64)a[APND_MARK_PREFIX_SZ+i]<<(56-8*i);
  }
-  if( iMark > (sz - APND_MARK_SIZE - 512) ) return -1;
-  if( iMark & 0x1ff ) return -1;
  return iMark;
 }

-static const char apvfsSqliteHdr[] = "SQLite format 3";
-/*
-** Check to see if the file is an appendvfs SQLite database file.
-** Return true iff it is such. Parameter sz is the file's size.
-*/
-static int apndIsAppendvfsDatabase(sqlite3_int64 sz, sqlite3_file *pFile){
-  int rc;
-  char zHdr[16];
-  sqlite3_int64 iMark = apndReadMark(sz, pFile);
-  if( iMark>=0 ){
-    /* If file has the correct end-marker, the expected odd size, and the
-    ** SQLite DB type marker where the end-marker puts it, then it
-    ** is an appendvfs database.
-    */
-    rc = pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), iMark);
-    if( SQLITE_OK==rc
-     && memcmp(zHdr, apvfsSqliteHdr, sizeof(zHdr))==0
-     && (sz & 0x1ff) == APND_MARK_SIZE
-     && sz>=512+APND_MARK_SIZE
-    ){
-      return 1; /* It's an appendvfs database */
-    }
-  }
-  return 0;
-}
-
-/*
-** Check to see if the file is an ordinary SQLite database file.
-** Return true iff so. Parameter sz is the file's size.
-*/
-static int apndIsOrdinaryDatabaseFile(sqlite3_int64 sz, sqlite3_file *pFile){
-  char zHdr[16];
-  if( apndIsAppendvfsDatabase(sz, pFile) /* rule 2 */
-   || (sz & 0x1ff) != 0
-   || SQLITE_OK!=pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), 0)
-   || memcmp(zHdr, apvfsSqliteHdr, sizeof(zHdr))!=0
-  ){
-    return 0;
-  }else{
-    return 1;
-  }
-}
-
 /*
 ** Open an apnd file handle.
 */
 static int apndOpen(
-  sqlite3_vfs *pApndVfs,
+  sqlite3_vfs *pVfs,
  const char *zName,
  sqlite3_file *pFile,
  int flags,
  int *pOutFlags
 ){
-  ApndFile *pApndFile = (ApndFile*)pFile;
-  sqlite3_file *pBaseFile = ORIGFILE(pFile);
-  sqlite3_vfs *pBaseVfs = ORIGVFS(pApndVfs);
+  ApndFile *p;
+  sqlite3_file *pSubFile;
+  sqlite3_vfs *pSubVfs;
  int rc;
-  sqlite3_int64 sz = 0;
+  sqlite3_int64 sz;
+  pSubVfs = ORIGVFS(pVfs);
  if( (flags & SQLITE_OPEN_MAIN_DB)==0 ){
-    /* The appendvfs is not to be used for transient or temporary databases.
-    ** Just use the base VFS open to initialize the given file object and
-    ** open the underlying file. (Appendvfs is then unused for this file.)
-    */
-    return pBaseVfs->xOpen(pBaseVfs, zName, pFile, flags, pOutFlags);
+    return pSubVfs->xOpen(pSubVfs, zName, pFile, flags, pOutFlags);
  }
-  memset(pApndFile, 0, sizeof(ApndFile));
+  p = (ApndFile*)pFile;
+  memset(p, 0, sizeof(*p));
+  pSubFile = ORIGFILE(pFile);
  pFile->pMethods = &apnd_io_methods;
-  pApndFile->iMark = -1;    /* Append mark not yet written */
-
-  rc = pBaseVfs->xOpen(pBaseVfs, zName, pBaseFile, flags, pOutFlags);
-  if( rc==SQLITE_OK ){
-    rc = pBaseFile->pMethods->xFileSize(pBaseFile, &sz);
-    if( rc ){
-      pBaseFile->pMethods->xClose(pBaseFile);
-    }
-  }
+  rc = pSubVfs->xOpen(pSubVfs, zName, pSubFile, flags, pOutFlags);
+  if( rc ) goto apnd_open_done;
+  rc = pSubFile->pMethods->xFileSize(pSubFile, &sz);
  if( rc ){
-    pFile->pMethods = 0;
-    return rc;
+    pSubFile->pMethods->xClose(pSubFile);
+    goto apnd_open_done;
  }
-  if( apndIsOrdinaryDatabaseFile(sz, pBaseFile) ){
-    /* The file being opened appears to be just an ordinary DB. Copy
-    ** the base dispatch-table so this instance mimics the base VFS. 
-    */
-    memmove(pApndFile, pBaseFile, pBaseVfs->szOsFile);
+  if( apndIsOrdinaryDatabaseFile(sz, pSubFile) ){
+    memmove(pFile, pSubFile, pSubVfs->szOsFile);
    return SQLITE_OK;
  }
-  pApndFile->iPgOne = apndReadMark(sz, pFile);
-  if( pApndFile->iPgOne>=0 ){
-    pApndFile->iMark = sz - APND_MARK_SIZE; /* Append mark found */
+  p->iMark = 0;
+  p->iPgOne = apndReadMark(sz, pFile);
+  if( p->iPgOne>0 ){
    return SQLITE_OK;
  }
  if( (flags & SQLITE_OPEN_CREATE)==0 ){
-    pBaseFile->pMethods->xClose(pBaseFile);
+    pSubFile->pMethods->xClose(pSubFile);
    rc = SQLITE_CANTOPEN;
-    pFile->pMethods = 0;
-  }else{
-    /* Round newly added appendvfs location to #define'd page boundary. 
-    ** Note that nothing has yet been written to the underlying file.
-    ** The append mark will be written along with first content write.
-    ** Until then, paf->iMark value indicates it is not yet written.
-    */
-    pApndFile->iPgOne = APND_START_ROUNDUP(sz);
  }
+  p->iPgOne = (sz+0xfff) & ~(sqlite3_int64)0xfff;
+apnd_open_done:
+  if( rc ) pFile->pMethods = 0;
  return rc;
 }

-/*
-** Delete an apnd file.
-** For an appendvfs, this could mean delete the appendvfs portion,
-** leaving the appendee as it was before it gained an appendvfs.
-** For now, this code deletes the underlying file too.
-*/
-static int apndDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
-  return ORIGVFS(pVfs)->xDelete(ORIGVFS(pVfs), zPath, dirSync);
-}
-
 /*
 ** All other VFS methods are pass-thrus.
 */
+static int apndDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
+  return ORIGVFS(pVfs)->xDelete(ORIGVFS(pVfs), zPath, dirSync);
+}
 static int apndAccess(
  sqlite3_vfs *pVfs, 
  const char *zPath, 
@@ -657,7 +551,6 @@ int sqlite3_appendvfs_init(
  (void)pzErrMsg;
  (void)db;
  pOrig = sqlite3_vfs_find(0);
-  if( pOrig==0 ) return SQLITE_ERROR;
  apnd_vfs.iVersion = pOrig->iVersion;
  apnd_vfs.pAppData = pOrig;
  apnd_vfs.szOsFile = pOrig->szOsFile + sizeof(ApndFile);
@@ -56,24 +56,14 @@
 SQLITE_EXTENSION_INIT1
 #include <assert.h>
 #include <string.h>
- 
+
 /* Allowed values for the mFlags parameter to sqlite3_carray_bind().
 ** Must exactly match the definitions in carray.h.
 */
-#ifndef CARRAY_INT32
-# define CARRAY_INT32     0      /* Data is 32-bit signed integers */
-# define CARRAY_INT64     1      /* Data is 64-bit signed integers */
-# define CARRAY_DOUBLE    2      /* Data is doubles */
-# define CARRAY_TEXT      3      /* Data is char* */
-#endif
-
-#ifndef SQLITE_API
-# ifdef _WIN32
-#  define SQLITE_API __declspec(dllexport)
-# else
-#  define SQLITE_API
-# endif
-#endif
+#define CARRAY_INT32     0      /* Data is 32-bit signed integers */
+#define CARRAY_INT64     1      /* Data is 64-bit signed integers */
+#define CARRAY_DOUBLE    2      /* Data is doubles */
+#define CARRAY_TEXT      3      /* Data is char* */

 #ifndef SQLITE_OMIT_VIRTUALTABLE

@@ -410,7 +400,10 @@ static void carrayBindDel(void *pPtr){
 ** Invoke this interface in order to bind to the single-argument
 ** version of CARRAY().
 */
-SQLITE_API int sqlite3_carray_bind(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_carray_bind(
  sqlite3_stmt *pStmt,
  int idx,
  void *aData,
@@ -464,7 +457,7 @@ SQLITE_API int sqlite3_carray_bind(
        z += n+1;
      }
    }else{
-      memcpy(pNew->aData, aData, sz);
+      memcpy(pNew->aData, aData, sz*nData);
    }
    pNew->xDel = sqlite3_free;
  }else{
@@ -505,7 +498,10 @@ static void inttoptrFunc(

 #endif /* SQLITE_OMIT_VIRTUALTABLE */

-SQLITE_API int sqlite3_carray_init(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_carray_init(
  sqlite3 *db, 
  char **pzErrMsg, 
  const sqlite3_api_routines *pApi
@@ -1,32 +1,12 @@
 /*
-** 2020-11-17
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-**
 ** Interface definitions for the CARRAY table-valued function
 ** extension.
 */

-#ifndef _CARRAY_H
-#define _CARRAY_H
-
-#include "sqlite3.h"              /* Required for error code definitions */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* Use this interface to bind an array to the single-argument version
 ** of CARRAY().
 */
-SQLITE_API int sqlite3_carray_bind(
+int sqlite3_carray_bind(
  sqlite3_stmt *pStmt,        /* Statement to be bound */
  int i,                      /* Parameter index */
  void *aData,                /* Pointer to array data */
@@ -41,10 +21,3 @@ SQLITE_API int sqlite3_carray_bind(
 #define CARRAY_INT64     1    /* Data is 64-bit signed integers */
 #define CARRAY_DOUBLE    2    /* Data is doubles */
 #define CARRAY_TEXT      3    /* Data is char* */
-
-#ifdef __cplusplus
-}  /* end of the 'extern "C"' block */
-#endif
-
-#endif /* ifndef _CARRAY_H */
-
@@ -356,41 +356,6 @@ static void cksmVerifyFunc(
  sqlite3_result_int(context, memcmp(data+nByte-8,cksum,8)==0);
 }

-#ifdef SQLITE_CKSUMVFS_INIT_FUNCNAME
-/*
-** SQL function:    initialize_cksumvfs(SCHEMANAME)
-**
-** This SQL functions (whose name is actually determined at compile-time
-** by the value of the SQLITE_CKSUMVFS_INIT_FUNCNAME macro) invokes:
-**
-**   sqlite3_file_control(db, SCHEMANAME, SQLITE_FCNTL_RESERVE_BYTE, &n);
-**
-** In order to set the reserve bytes value to 8, so that cksumvfs will
-** operation.  This feature is provided (if and only if the
-** SQLITE_CKSUMVFS_INIT_FUNCNAME compile-time option is set to a string
-** which is the name of the SQL function) so as to provide the ability
-** to invoke the file-control in programming languages that lack
-** direct access to the sqlite3_file_control() interface (ex: Java).
-**
-** This interface is undocumented, apart from this comment.  Usage
-** example:
-**
-**    1.  Compile with -DSQLITE_CKSUMVFS_INIT_FUNCNAME="ckvfs_init"
-**    2.  Run:  "SELECT cksum_init('main'); VACUUM;"
-*/
-static void cksmInitFunc(
-  sqlite3_context *context,
-  int argc,
-  sqlite3_value **argv
-){
-  int nByte = 8;
-  const char *zSchemaName = (const char*)sqlite3_value_text(argv[0]);
-  sqlite3 *db = sqlite3_context_db_handle(context);
-  sqlite3_file_control(db, zSchemaName, SQLITE_FCNTL_RESERVE_BYTES, &nByte);
-  /* Return NULL */
-}
-#endif /* SQLITE_CKSUMBFS_INIT_FUNCNAME */
-
 /*
 ** Close a cksm-file.
 */
@@ -579,18 +544,6 @@ static int cksmFileControl(sqlite3_file *pFile, int op, void *pArg){
  }else if( op==SQLITE_FCNTL_CKPT_START || op==SQLITE_FCNTL_CKPT_DONE ){
    p->inCkpt = op==SQLITE_FCNTL_CKPT_START;
    if( p->pPartner ) p->pPartner->inCkpt = p->inCkpt;
-  }else if( op==SQLITE_FCNTL_CKSM_FILE ){
-    /* This VFS needs to obtain a pointer to the corresponding database
-    ** file handle from within xOpen() calls to open wal files. To do this,
-    ** it uses the sqlite3_database_file_object() API to obtain a pointer
-    ** to the file-handle used by SQLite to access the db file. This is
-    ** fine if cksmvfs happens to be the top-level VFS, but not if there
-    ** are one or more wrapper VFS. To handle this case, this file-control
-    ** is used to extract the cksmvfs file-handle from any wrapper file 
-    ** handle.  */
-    sqlite3_file **ppFile = (sqlite3_file**)pArg;
-    *ppFile = (sqlite3_file*)p;
-    return SQLITE_OK;
  }
  rc = pFile->pMethods->xFileControl(pFile, op, pArg);
  if( rc==SQLITE_OK && op==SQLITE_FCNTL_VFSNAME ){
@@ -700,8 +653,6 @@ static int cksmOpen(
  if( rc ) goto cksm_open_done;
  if( flags & SQLITE_OPEN_WAL ){
    sqlite3_file *pDb = sqlite3_database_file_object(zName);
-    rc = pDb->pMethods->xFileControl(pDb, SQLITE_FCNTL_CKSM_FILE, (void*)&pDb);
-    assert( rc==SQLITE_OK );
    p->pPartner = (CksmFile*)pDb;
    assert( p->pPartner->pPartner==0 );
    p->pPartner->pPartner = p;
@@ -764,17 +715,7 @@ static int cksmGetLastError(sqlite3_vfs *pVfs, int a, char *b){
  return ORIGVFS(pVfs)->xGetLastError(ORIGVFS(pVfs), a, b);
 }
 static int cksmCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p){
-  sqlite3_vfs *pOrig = ORIGVFS(pVfs);
-  int rc;
-  assert( pOrig->iVersion>=2 );
-  if( pOrig->xCurrentTimeInt64 ){
-    rc = pOrig->xCurrentTimeInt64(pOrig, p);
-  }else{
-    double r;
-    rc = pOrig->xCurrentTime(pOrig, &r);
-    *p = (sqlite3_int64)(r*86400000.0);
-  }
-  return rc;
+  return ORIGVFS(pVfs)->xCurrentTimeInt64(ORIGVFS(pVfs), p);
 }
 static int cksmSetSystemCall(
  sqlite3_vfs *pVfs,
@@ -805,11 +746,6 @@ static int cksmRegisterFunc(
  rc = sqlite3_create_function(db, "verify_checksum", 1,
                   SQLITE_UTF8|SQLITE_INNOCUOUS|SQLITE_DETERMINISTIC,
                   0, cksmVerifyFunc, 0, 0);
-#ifdef SQLITE_CKSUMVFS_INIT_FUNCNAME
-  (void)sqlite3_create_function(db, SQLITE_CKSUMVFS_INIT_FUNCNAME, 1,
-                   SQLITE_UTF8|SQLITE_DIRECTONLY,
-                   0, cksmInitFunc, 0, 0);
-#endif
  return rc;
 }

@@ -823,7 +759,6 @@ static int cksmRegisterVfs(void){
  sqlite3_vfs *pOrig;
  if( sqlite3_vfs_find("cksmvfs")!=0 ) return SQLITE_OK;
  pOrig = sqlite3_vfs_find(0);
-  if( pOrig==0 ) return SQLITE_ERROR;
  cksm_vfs.iVersion = pOrig->iVersion;
  cksm_vfs.pAppData = pOrig;
  cksm_vfs.szOsFile = pOrig->szOsFile + sizeof(CksmFile);
@@ -871,6 +806,9 @@ int sqlite3_cksumvfs_init(
  SQLITE_EXTENSION_INIT2(pApi);
  (void)pzErrMsg; /* not used */
  rc = cksmRegisterFunc(db, 0, 0);
+  if( rc==SQLITE_OK ){
+    
+  }
  if( rc==SQLITE_OK ){
    rc = cksmRegisterVfs();
  }
@@ -941,7 +941,7 @@ int sqlite3_csv_init(
  char **pzErrMsg, 
  const sqlite3_api_routines *pApi
 ){
-#ifndef SQLITE_OMIT_VIRTUALTABLE
+#ifndef SQLITE_OMIT_VIRTUALTABLE	
  int rc;
  SQLITE_EXTENSION_INIT2(pApi);
  rc = sqlite3_create_module(db, "csv", &CsvModule, 0);
@@ -459,11 +459,10 @@ static void decimalSubFunc(
  Decimal *pA = decimal_new(context, argv[0], 0, 0);
  Decimal *pB = decimal_new(context, argv[1], 0, 0);
  UNUSED_PARAMETER(argc);
-  if( pB ){
-    pB->sign = !pB->sign;
-    decimal_add(pA, pB);
-    decimal_result(context, pA);
-  }
+  if( pB==0 ) return;
+  pB->sign = !pB->sign;
+  decimal_add(pA, pB);
+  decimal_result(context, pA);
  decimal_free(pA);
  decimal_free(pB);
 }
@@ -72,11 +72,6 @@
 **   $path is a relative path, then $path is interpreted relative to $dir. 
 **   And the paths returned in the "name" column of the table are also 
 **   relative to directory $dir.
-**
-** Notes on building this extension for Windows:
-**   Unless linked statically with the SQLite library, a preprocessor
-**   symbol, FILEIO_WIN32_DLL, must be #define'd to create a stand-alone
-**   DLL form of this extension for WIN32. See its use below for details.
 */
 #include "sqlite3ext.h"
 SQLITE_EXTENSION_INIT1
@@ -230,22 +225,6 @@ static sqlite3_uint64 fileTimeToUnixTime(
  return (fileIntervals.QuadPart - epochIntervals.QuadPart) / 10000000;
 }

-
-#if defined(FILEIO_WIN32_DLL) && (defined(_WIN32) || defined(WIN32))
-#  /* To allow a standalone DLL, use this next replacement function: */
-#  undef sqlite3_win32_utf8_to_unicode
-#  define sqlite3_win32_utf8_to_unicode utf8_to_utf16
-#
-LPWSTR utf8_to_utf16(const char *z){
-  int nAllot = MultiByteToWideChar(CP_UTF8, 0, z, -1, NULL, 0);
-  LPWSTR rv = sqlite3_malloc(nAllot * sizeof(WCHAR));
-  if( rv!=0 && 0 < MultiByteToWideChar(CP_UTF8, 0, z, -1, rv, nAllot) )
-    return rv;
-  sqlite3_free(rv);
-  return 0;
-}
-#endif
-
 /*
 ** This function attempts to normalize the time values found in the stat()
 ** buffer to UTC.  This is necessary on Win32, where the runtime library
@@ -368,11 +347,10 @@ static int writeFile(
  mode_t mode,                    /* MODE parameter passed to writefile() */
  sqlite3_int64 mtime             /* MTIME parameter (or -1 to not set time) */
 ){
-  if( zFile==0 ) return 1;
 #if !defined(_WIN32) && !defined(WIN32)
  if( S_ISLNK(mode) ){
    const char *zTo = (const char*)sqlite3_value_text(pData);
-    if( zTo==0 || symlink(zTo, zFile)<0 ) return 1;
+    if( symlink(zTo, zFile)<0 ) return 1;
  }else
 #endif
  {
@@ -1020,11 +998,3 @@ int sqlite3_fileio_init(
  }
  return rc;
 }
-
-#if defined(FILEIO_WIN32_DLL) && (defined(_WIN32) || defined(WIN32))
-/* To allow a standalone DLL, make test_windirent.c use the same
- * redefined SQLite API calls as the above extension code does.
- * Just pull in this .c to accomplish this. As a beneficial side
- * effect, this extension becomes a single translation unit. */
-#  include "test_windirent.c"
-#endif
@@ -167,14 +167,6 @@ static void ieee754func(
    int isNeg = 0;
    m = sqlite3_value_int64(argv[0]);
    e = sqlite3_value_int64(argv[1]);
-
-    /* Limit the range of e.  Ticket 22dea1cfdb9151e4 2021-03-02 */
-    if( e>10000 ){
-      e = 10000;
-    }else if( e<-10000 ){
-      e = -10000;
-    }
-
    if( m<0 ){
      isNeg = 1;
      m = -m;
@@ -194,11 +186,7 @@ static void ieee754func(
    e += 1075;
    if( e<=0 ){
      /* Subnormal */
-      if( 1-e >= 64 ){
-        m = 0;
-      }else{
-        m >>= 1-e;
-      }
+      m >>= 1-e;
      e = 0;
    }else if( e>0x7ff ){
      e = 0x7ff;
@@ -284,7 +272,7 @@ int sqlite3_ieee_init(
  SQLITE_EXTENSION_INIT2(pApi);
  (void)pzErrMsg;  /* Unused parameter */
  for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){
-    rc = sqlite3_create_function(db, aFunc[i].zFName, aFunc[i].nArg,
+    rc = sqlite3_create_function(db, aFunc[i].zFName, aFunc[i].nArg,	
                               SQLITE_UTF8|SQLITE_INNOCUOUS,
                               (void*)&aFunc[i].iAux,
                               aFunc[i].xFunc, 0, 0);
@@ -559,7 +559,6 @@ int sqlite3_memvfs_init(
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
  mem_vfs.pAppData = sqlite3_vfs_find(0);
-  if( mem_vfs.pAppData==0 ) return SQLITE_ERROR;
  mem_vfs.szOsFile = sizeof(MemFile);
  rc = sqlite3_vfs_register(&mem_vfs, 1);
 #ifdef MEMVFS_TEST
@@ -1,461 +0,0 @@
-/*
-** 2022-01-19
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-**
-** This file implements a virtual-table that returns information about
-** how the query planner called the xBestIndex method.  This virtual table
-** is intended for testing and debugging only.
-**
-** The schema of the virtual table is this:
-**
-**    CREATE TABLE qpvtab(
-**      vn     TEXT,           -- Name of an sqlite3_index_info field
-**      ix     INTEGER,        -- Array index or value
-**      cn     TEXT,           -- Column name
-**      op     INTEGER,        -- operator
-**      ux     BOOLEAN,        -- "usable" field
-**      rhs    TEXT,           -- sqlite3_vtab_rhs_value()
-**
-**      a, b, c, d, e,         -- Extra columns to attach constraints to
-**
-**      flags    INTEGER HIDDEN  -- control flags
-**    );
-**
-** The virtual table returns a description of the sqlite3_index_info object
-** that was provided to the (successful) xBestIndex method.  There is one
-** row in the result table for each field in the sqlite3_index_info object.
-**
-** The values of the "a" through "e" columns are one of:
-**
-**    1.   TEXT - the same as the column name
-**    2.   INTEGER - 1 for "a", 2 for "b", and so forth
-**
-** Option 1 is the default behavior.  2 is use if there is a usable
-** constraint on "flags" with an integer right-hand side that where the
-** value of the right-hand side has its 0x001 bit set.
-**
-** All constraints on columns "a" through "e" are marked as "omit".
-**
-** If there is a usable constraint on "flags" that has a RHS value that
-** is an integer and that integer has its 0x02 bit set, then the
-** orderByConsumed flag is set.
-**
-** FLAGS SUMMARY:
-**
-**   0x001               Columns 'a' through 'e' have INT values
-**   0x002               orderByConsumed is set
-**   0x004               OFFSET and LIMIT have omit set
-**
-** COMPILE:
-**
-**   gcc -Wall -g -shared -fPIC -I. qpvtab.c -o qqvtab.so
-**
-** EXAMPLE USAGE:
-**
-**   .load ./qpvtab
-**   SELECT rowid, *, flags FROM qpvtab(102)
-**    WHERE a=19
-**      AND b BETWEEN 4.5 and 'hello'
-**      AND c<>x'aabbcc'
-**    ORDER BY d, e DESC;
-*/
-#if !defined(SQLITEINT_H)
-#include "sqlite3ext.h"
-#endif
-SQLITE_EXTENSION_INIT1
-#include <string.h>
-#include <assert.h>
-#include <stdlib.h>
-
-#if !defined(SQLITE_OMIT_VIRTUALTABLE)
-
-/* qpvtab_vtab is a subclass of sqlite3_vtab which is
-** underlying representation of the virtual table
-*/
-typedef struct qpvtab_vtab qpvtab_vtab;
-struct qpvtab_vtab {
-  sqlite3_vtab base;  /* Base class - must be first */
-};
-
-/* qpvtab_cursor is a subclass of sqlite3_vtab_cursor which will
-** serve as the underlying representation of a cursor that scans
-** over rows of the result
-*/
-typedef struct qpvtab_cursor qpvtab_cursor;
-struct qpvtab_cursor {
-  sqlite3_vtab_cursor base;  /* Base class - must be first */
-  sqlite3_int64 iRowid;      /* The rowid */
-  const char *zData;         /* Data to return */
-  int nData;                 /* Number of bytes of data */
-  int flags;                 /* Flags value */
-};
-
-/*
-** Names of columns
-*/
-static const char *azColname[] = {
-  "vn",
-  "ix",
-  "cn",
-  "op",
-  "ux",
-  "rhs",
-  "a", "b", "c", "d", "e",
-  "flags",
-  ""
-};
-
-/*
-** The qpvtabConnect() method is invoked to create a new
-** qpvtab virtual table.
-*/
-static int qpvtabConnect(
-  sqlite3 *db,
-  void *pAux,
-  int argc, const char *const*argv,
-  sqlite3_vtab **ppVtab,
-  char **pzErr
-){
-  qpvtab_vtab *pNew;
-  int rc;
-
-  rc = sqlite3_declare_vtab(db,
-         "CREATE TABLE x("
-         " vn TEXT,"
-         " ix INT,"
-         " cn TEXT,"
-         " op INT,"
-         " ux BOOLEAN,"
-         " rhs TEXT,"
-         " a, b, c, d, e,"
-         " flags INT HIDDEN)"
-       );
-#define QPVTAB_VN      0
-#define QPVTAB_IX      1
-#define QPVTAB_CN      2
-#define QPVTAB_OP      3
-#define QPVTAB_UX      4
-#define QPVTAB_RHS     5
-#define QPVTAB_A       6
-#define QPVTAB_B       7
-#define QPVTAB_C       8
-#define QPVTAB_D       9
-#define QPVTAB_E      10
-#define QPVTAB_FLAGS  11
-#define QPVTAB_NONE   12
-  if( rc==SQLITE_OK ){
-    pNew = sqlite3_malloc( sizeof(*pNew) );
-    *ppVtab = (sqlite3_vtab*)pNew;
-    if( pNew==0 ) return SQLITE_NOMEM;
-    memset(pNew, 0, sizeof(*pNew));
-  }
-  return rc;
-}
-
-/*
-** This method is the destructor for qpvtab_vtab objects.
-*/
-static int qpvtabDisconnect(sqlite3_vtab *pVtab){
-  qpvtab_vtab *p = (qpvtab_vtab*)pVtab;
-  sqlite3_free(p);
-  return SQLITE_OK;
-}
-
-/*
-** Constructor for a new qpvtab_cursor object.
-*/
-static int qpvtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
-  qpvtab_cursor *pCur;
-  pCur = sqlite3_malloc( sizeof(*pCur) );
-  if( pCur==0 ) return SQLITE_NOMEM;
-  memset(pCur, 0, sizeof(*pCur));
-  *ppCursor = &pCur->base;
-  return SQLITE_OK;
-}
-
-/*
-** Destructor for a qpvtab_cursor.
-*/
-static int qpvtabClose(sqlite3_vtab_cursor *cur){
-  qpvtab_cursor *pCur = (qpvtab_cursor*)cur;
-  sqlite3_free(pCur);
-  return SQLITE_OK;
-}
-
-
-/*
-** Advance a qpvtab_cursor to its next row of output.
-*/
-static int qpvtabNext(sqlite3_vtab_cursor *cur){
-  qpvtab_cursor *pCur = (qpvtab_cursor*)cur;
-  if( pCur->iRowid<pCur->nData ){
-    const char *z = &pCur->zData[pCur->iRowid];
-    const char *zEnd = strchr(z, '\n');
-    if( zEnd ) zEnd++;
-    pCur->iRowid = (int)(zEnd - pCur->zData);
-  }
-  return SQLITE_OK;
-}
-
-/*
-** Return values of columns for the row at which the qpvtab_cursor
-** is currently pointing.
-*/
-static int qpvtabColumn(
-  sqlite3_vtab_cursor *cur,   /* The cursor */
-  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
-  int i                       /* Which column to return */
-){
-  qpvtab_cursor *pCur = (qpvtab_cursor*)cur;
-  if( i>=QPVTAB_VN && i<=QPVTAB_RHS && pCur->iRowid<pCur->nData ){
-    const char *z = &pCur->zData[pCur->iRowid];
-    const char *zEnd;
-    int j;
-    j = QPVTAB_VN;
-    while(1){
-      zEnd = strchr(z, j==QPVTAB_RHS ? '\n' : ',');
-      if( j==i || zEnd==0 ) break;
-      z = zEnd+1;
-      j++;
-    }
-    if( zEnd==z ){
-      sqlite3_result_null(ctx);
-    }else if( i==QPVTAB_IX || i==QPVTAB_OP || i==QPVTAB_UX ){
-      sqlite3_result_int(ctx, atoi(z));
-    }else{
-      sqlite3_result_text64(ctx, z, zEnd-z, SQLITE_TRANSIENT, SQLITE_UTF8);
-    }
-  }else if( i>=QPVTAB_A && i<=QPVTAB_E ){
-    if( pCur->flags & 0x001 ){
-      sqlite3_result_int(ctx, i-QPVTAB_A+1);
-    }else{
-      char x = 'a'+i-QPVTAB_A;
-      sqlite3_result_text64(ctx, &x, 1, SQLITE_TRANSIENT, SQLITE_UTF8);
-    }
-  }else if( i==QPVTAB_FLAGS ){
-    sqlite3_result_int(ctx, pCur->flags);
-  }
-  return SQLITE_OK;
-}
-
-/*
-** Return the rowid for the current row.  In this implementation, the
-** rowid is the same as the output value.
-*/
-static int qpvtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
-  qpvtab_cursor *pCur = (qpvtab_cursor*)cur;
-  *pRowid = pCur->iRowid;
-  return SQLITE_OK;
-}
-
-/*
-** Return TRUE if the cursor has been moved off of the last
-** row of output.
-*/
-static int qpvtabEof(sqlite3_vtab_cursor *cur){
-  qpvtab_cursor *pCur = (qpvtab_cursor*)cur;
-  return pCur->iRowid>=pCur->nData;
-}
-
-/*
-** This method is called to "rewind" the qpvtab_cursor object back
-** to the first row of output.  This method is always called at least
-** once prior to any call to qpvtabColumn() or qpvtabRowid() or 
-** qpvtabEof().
-*/
-static int qpvtabFilter(
-  sqlite3_vtab_cursor *pVtabCursor, 
-  int idxNum, const char *idxStr,
-  int argc, sqlite3_value **argv
-){
-  qpvtab_cursor *pCur = (qpvtab_cursor *)pVtabCursor;
-  pCur->iRowid = 0;
-  pCur->zData = idxStr;
-  pCur->nData = (int)strlen(idxStr);
-  pCur->flags = idxNum;
-  return SQLITE_OK;
-}
-
-/*
-** Append the text of a value to pStr
-*/
-static void qpvtabStrAppendValue(
-  sqlite3_str *pStr,
-  sqlite3_value *pVal
-){
-  switch( sqlite3_value_type(pVal) ){
-    case SQLITE_NULL:
-      sqlite3_str_appendf(pStr, "NULL");
-      break;
-    case SQLITE_INTEGER:
-      sqlite3_str_appendf(pStr, "%lld", sqlite3_value_int64(pVal));
-      break;
-    case SQLITE_FLOAT:
-      sqlite3_str_appendf(pStr, "%!f", sqlite3_value_double(pVal));
-      break;
-    case SQLITE_TEXT: {
-      int i;
-      const char *a = (const char*)sqlite3_value_text(pVal);
-      int n = sqlite3_value_bytes(pVal);
-      sqlite3_str_append(pStr, "'", 1);
-      for(i=0; i<n; i++){
-        char c = a[i];
-        if( c=='\n' ) c = ' ';
-        sqlite3_str_append(pStr, &c, 1);
-        if( c=='\'' ) sqlite3_str_append(pStr, &c, 1);
-      }
-      sqlite3_str_append(pStr, "'", 1);
-      break;
-    }
-    case SQLITE_BLOB: {
-      int i;
-      const unsigned char *a = sqlite3_value_blob(pVal);
-      int n = sqlite3_value_bytes(pVal);
-      sqlite3_str_append(pStr, "x'", 2);
-      for(i=0; i<n; i++){
-        sqlite3_str_appendf(pStr, "%02x", a[i]);
-      }
-      sqlite3_str_append(pStr, "'", 1);
-      break;
-    }
-  }
-}
-
-/*
-** SQLite will invoke this method one or more times while planning a query
-** that uses the virtual table.  This routine needs to create
-** a query plan for each invocation and compute an estimated cost for that
-** plan.
-*/
-static int qpvtabBestIndex(
-  sqlite3_vtab *tab,
-  sqlite3_index_info *pIdxInfo
-){
-  sqlite3_str *pStr = sqlite3_str_new(0);
-  int i, k = 0;
-  int rc;
-  sqlite3_str_appendf(pStr, "nConstraint,%d,,,,\n", pIdxInfo->nConstraint);
-  for(i=0; i<pIdxInfo->nConstraint; i++){
-    sqlite3_value *pVal;
-    int iCol = pIdxInfo->aConstraint[i].iColumn;
-    int op = pIdxInfo->aConstraint[i].op;
-    if( iCol==QPVTAB_FLAGS &&  pIdxInfo->aConstraint[i].usable ){
-      pVal = 0;
-      rc = sqlite3_vtab_rhs_value(pIdxInfo, i, &pVal);
-      assert( rc==SQLITE_OK || pVal==0 );
-      if( pVal ){
-        pIdxInfo->idxNum = sqlite3_value_int(pVal);
-        if( pIdxInfo->idxNum & 0x002 ) pIdxInfo->orderByConsumed = 1;
-      }
-    }
-    if( op==SQLITE_INDEX_CONSTRAINT_LIMIT
-     || op==SQLITE_INDEX_CONSTRAINT_OFFSET
-    ){
-      iCol = QPVTAB_NONE;
-    }
-    sqlite3_str_appendf(pStr,"aConstraint,%d,%s,%d,%d,",
-       i,
-       azColname[iCol],
-       op,
-       pIdxInfo->aConstraint[i].usable);
-    pVal = 0;
-    rc = sqlite3_vtab_rhs_value(pIdxInfo, i, &pVal);
-    assert( rc==SQLITE_OK || pVal==0 );
-    if( pVal ){
-      qpvtabStrAppendValue(pStr, pVal);
-    }
-    sqlite3_str_append(pStr, "\n", 1);
-  }
-  for(i=0; i<pIdxInfo->nConstraint; i++){
-    int iCol = pIdxInfo->aConstraint[i].iColumn;
-    int op = pIdxInfo->aConstraint[i].op;
-    if( op==SQLITE_INDEX_CONSTRAINT_LIMIT
-     || op==SQLITE_INDEX_CONSTRAINT_OFFSET
-    ){
-      iCol = QPVTAB_NONE;
-    }
-    if( iCol>=QPVTAB_A && pIdxInfo->aConstraint[i].usable ){
-      pIdxInfo->aConstraintUsage[i].argvIndex = ++k;
-      if( iCol<=QPVTAB_FLAGS || (pIdxInfo->idxNum & 0x004)!=0 ){
-        pIdxInfo->aConstraintUsage[i].omit = 1;
-      }
-    }
-  }
-  sqlite3_str_appendf(pStr, "nOrderBy,%d,,,,\n", pIdxInfo->nOrderBy);
-  for(i=0; i<pIdxInfo->nOrderBy; i++){
-    int iCol = pIdxInfo->aOrderBy[i].iColumn;
-    sqlite3_str_appendf(pStr, "aOrderBy,%d,%s,%d,,\n",i,
-      iCol>=0 ? azColname[iCol] : "rowid",
-      pIdxInfo->aOrderBy[i].desc
-    );
-  }
-  sqlite3_str_appendf(pStr, "sqlite3_vtab_distinct,%d,,,,\n", 
-                      sqlite3_vtab_distinct(pIdxInfo));
-  sqlite3_str_appendf(pStr, "idxFlags,%d,,,,\n", pIdxInfo->idxFlags);
-  sqlite3_str_appendf(pStr, "colUsed,%d,,,,\n", (int)pIdxInfo->colUsed);
-  pIdxInfo->estimatedCost = (double)10;
-  pIdxInfo->estimatedRows = 10;
-  sqlite3_str_appendf(pStr, "idxNum,%d,,,,\n", pIdxInfo->idxNum);
-  sqlite3_str_appendf(pStr, "orderByConsumed,%d,,,,\n",
-                      pIdxInfo->orderByConsumed);
-  pIdxInfo->idxStr = sqlite3_str_finish(pStr);
-  pIdxInfo->needToFreeIdxStr = 1;
-  return SQLITE_OK;
-}
-
-/*
-** This following structure defines all the methods for the 
-** virtual table.
-*/
-static sqlite3_module qpvtabModule = {
-  /* iVersion    */ 0,
-  /* xCreate     */ 0,
-  /* xConnect    */ qpvtabConnect,
-  /* xBestIndex  */ qpvtabBestIndex,
-  /* xDisconnect */ qpvtabDisconnect,
-  /* xDestroy    */ 0,
-  /* xOpen       */ qpvtabOpen,
-  /* xClose      */ qpvtabClose,
-  /* xFilter     */ qpvtabFilter,
-  /* xNext       */ qpvtabNext,
-  /* xEof        */ qpvtabEof,
-  /* xColumn     */ qpvtabColumn,
-  /* xRowid      */ qpvtabRowid,
-  /* xUpdate     */ 0,
-  /* xBegin      */ 0,
-  /* xSync       */ 0,
-  /* xCommit     */ 0,
-  /* xRollback   */ 0,
-  /* xFindMethod */ 0,
-  /* xRename     */ 0,
-  /* xSavepoint  */ 0,
-  /* xRelease    */ 0,
-  /* xRollbackTo */ 0,
-  /* xShadowName */ 0
-};
-#endif /* SQLITE_OMIT_VIRTUALTABLE */
-
-
-#ifdef _WIN32
-__declspec(dllexport)
-#endif
-int sqlite3_qpvtab_init(
-  sqlite3 *db, 
-  char **pzErrMsg, 
-  const sqlite3_api_routines *pApi
-){
-  int rc = SQLITE_OK;
-  SQLITE_EXTENSION_INIT2(pApi);
-#ifndef SQLITE_OMIT_VIRTUALTABLE
-  rc = sqlite3_create_module(db, "qpvtab", &qpvtabModule, 0);
-#endif
-  return rc;
-}
@@ -248,7 +248,7 @@ static int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
          break;
        }
        case RE_OP_ANY: {
-          if( c!=0 ) re_add_state(pNext, x+1);
+          re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_WORD: {
@@ -256,7 +256,7 @@ static int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
          break;
        }
        case RE_OP_NOTWORD: {
-          if( !re_word_char(c) && c!=0 ) re_add_state(pNext, x+1);
+          if( !re_word_char(c) ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_DIGIT: {
@@ -264,7 +264,7 @@ static int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
          break;
        }
        case RE_OP_NOTDIGIT: {
-          if( !re_digit_char(c) && c!=0 ) re_add_state(pNext, x+1);
+          if( !re_digit_char(c) ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_SPACE: {
@@ -272,7 +272,7 @@ static int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
          break;
        }
        case RE_OP_NOTSPACE: {
-          if( !re_space_char(c) && c!=0 ) re_add_state(pNext, x+1);
+          if( !re_space_char(c) ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_BOUNDARY: {
@@ -297,11 +297,8 @@ static int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
          rc = 1;
          goto re_match_end;
        }
+        case RE_OP_CC_INC:
        case RE_OP_CC_EXC: {
-          if( c==0 ) break;
-          /* fall-through */ goto re_op_cc_inc;
-        }
-        case RE_OP_CC_INC: re_op_cc_inc: {
          int j = 1;
          int n = pRe->aArg[x];
          int hit = 0;
@@ -322,7 +319,7 @@ static int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
          }
          if( pRe->aOp[x]==RE_OP_CC_EXC ) hit = !hit;
          if( hit ) re_add_state(pNext, x+n);
-          break;
+          break;            
        }
      }
    }
@@ -483,7 +480,7 @@ static const char *re_subcompile_string(ReCompiled *p){
    iStart = p->nState;
    switch( c ){
      case '|':
-      case '$':
+      case '$': 
      case ')': {
        p->sIn.i--;
        return 0;
@@ -499,7 +496,7 @@ static const char *re_subcompile_string(ReCompiled *p){
        if( rePeek(p)=='*' ){
          re_append(p, RE_OP_ANYSTAR, 0);
          p->sIn.i++;
-        }else{
+        }else{ 
          re_append(p, RE_OP_ANY, 0);
        }
        break;
@@ -676,8 +673,8 @@ static const char *re_compile(ReCompiled **ppRe, const char *zIn, int noCase){
  ** regex engine over the string.  Do not worry able trying to match
  ** unicode characters beyond plane 0 - those are very rare and this is
  ** just an optimization. */
-  if( pRe->aOp[0]==RE_OP_ANYSTAR && !noCase ){
-    for(j=0, i=1; j<(int)sizeof(pRe->zInit)-2 && pRe->aOp[i]==RE_OP_MATCH; i++){
+  if( pRe->aOp[0]==RE_OP_ANYSTAR ){
+    for(j=0, i=1; j<sizeof(pRe->zInit)-2 && pRe->aOp[i]==RE_OP_MATCH; i++){
      unsigned x = pRe->aArg[i];
      if( x<=127 ){
        pRe->zInit[j++] = (unsigned char)x;
@@ -708,8 +705,8 @@ static const char *re_compile(ReCompiled **ppRe, const char *zIn, int noCase){
 ** is implemented as regexp(B,A).
 */
 static void re_sql_func(
-  sqlite3_context *context,
-  int argc,
+  sqlite3_context *context, 
+  int argc, 
  sqlite3_value **argv
 ){
  ReCompiled *pRe;          /* Compiled regular expression */
@@ -718,12 +715,11 @@ static void re_sql_func(
  const char *zErr;         /* Compile error message */
  int setAux = 0;           /* True to invoke sqlite3_set_auxdata() */

-  (void)argc;  /* Unused */
  pRe = sqlite3_get_auxdata(context, 0);
  if( pRe==0 ){
    zPattern = (const char*)sqlite3_value_text(argv[0]);
    if( zPattern==0 ) return;
-    zErr = re_compile(&pRe, zPattern, sqlite3_user_data(context)!=0);
+    zErr = re_compile(&pRe, zPattern, 0);
    if( zErr ){
      re_free(pRe);
      sqlite3_result_error(context, zErr, -1);
@@ -758,16 +754,7 @@ int sqlite3_regexp_init(
 ){
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
-  (void)pzErrMsg;  /* Unused */
-  rc = sqlite3_create_function(db, "regexp", 2, 
-                            SQLITE_UTF8|SQLITE_INNOCUOUS|SQLITE_DETERMINISTIC,
-                            0, re_sql_func, 0, 0);
-  if( rc==SQLITE_OK ){
-    /* The regexpi(PATTERN,STRING) function is a case-insensitive version
-    ** of regexp(PATTERN,STRING). */
-    rc = sqlite3_create_function(db, "regexpi", 2,
-                            SQLITE_UTF8|SQLITE_INNOCUOUS|SQLITE_DETERMINISTIC,
-                            (void*)db, re_sql_func, 0, 0);
-  }
+  rc = sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8|SQLITE_INNOCUOUS,
+                               0, re_sql_func, 0, 0);
  return rc;
 }
@@ -247,8 +247,7 @@ static int seriesEof(sqlite3_vtab_cursor *cur){
 **    4:    step=VALUE
 **
 ** Also, if bit 8 is set, that means that the series should be output
-** in descending order rather than in ascending order.  If bit 16 is
-** set, then output must appear in ascending order.
+** in descending order rather than in ascending order.
 **
 ** This routine should initialize the cursor and position it so that it
 ** is pointing at the first row, or pointing off the end of the table
@@ -274,12 +273,7 @@ static int seriesFilter(
  }
  if( idxNum & 4 ){
    pCur->iStep = sqlite3_value_int64(argv[i++]);
-    if( pCur->iStep==0 ){
-      pCur->iStep = 1;
-    }else if( pCur->iStep<0 ){
-      pCur->iStep = -pCur->iStep;
-      if( (idxNum & 16)==0 ) idxNum |= 8;
-    }
+    if( pCur->iStep<1 ) pCur->iStep = 1;
  }else{
    pCur->iStep = 1;
  }
@@ -323,12 +317,11 @@ static int seriesFilter(
 **  (8)  output in descending order
 */
 static int seriesBestIndex(
-  sqlite3_vtab *pVTab,
+  sqlite3_vtab *tabUnused,
  sqlite3_index_info *pIdxInfo
 ){
  int i, j;              /* Loop over constraints */
  int idxNum = 0;        /* The query plan bitmask */
-  int bStartSeen = 0;    /* EQ constraint seen on the START column */
  int unusableMask = 0;  /* Mask of unusable constraints */
  int nArg = 0;          /* Number of arguments that seriesFilter() expects */
  int aIdx[3];           /* Constraints on start, stop, and step */
@@ -338,7 +331,7 @@ static int seriesBestIndex(
  ** are the last three columns in the virtual table. */
  assert( SERIES_COLUMN_STOP == SERIES_COLUMN_START+1 );
  assert( SERIES_COLUMN_STEP == SERIES_COLUMN_START+2 );
-
+  (void)tabUnused;
  aIdx[0] = aIdx[1] = aIdx[2] = -1;
  pConstraint = pIdxInfo->aConstraint;
  for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){
@@ -348,7 +341,6 @@ static int seriesBestIndex(
    iCol = pConstraint->iColumn - SERIES_COLUMN_START;
    assert( iCol>=0 && iCol<=2 );
    iMask = 1 << iCol;
-    if( iCol==0 ) bStartSeen = 1;
    if( pConstraint->usable==0 ){
      unusableMask |=  iMask;
      continue;
@@ -363,18 +355,6 @@ static int seriesBestIndex(
      pIdxInfo->aConstraintUsage[j].omit = !SQLITE_SERIES_CONSTRAINT_VERIFY;
    }
  }
-  /* The current generate_column() implementation requires at least one
-  ** argument (the START value).  Legacy versions assumed START=0 if the
-  ** first argument was omitted.  Compile with -DZERO_ARGUMENT_GENERATE_SERIES
-  ** to obtain the legacy behavior */
-#ifndef ZERO_ARGUMENT_GENERATE_SERIES
-  if( !bStartSeen ){
-    sqlite3_free(pVTab->zErrMsg);
-    pVTab->zErrMsg = sqlite3_mprintf(
-        "first argument to \"generate_series()\" missing or unusable");
-    return SQLITE_ERROR;
-  }
-#endif
  if( (unusableMask & ~idxNum)!=0 ){
    /* The start, stop, and step columns are inputs.  Therefore if there
    ** are unusable constraints on any of start, stop, or step then
@@ -386,12 +366,8 @@ static int seriesBestIndex(
    ** the preferred case */
    pIdxInfo->estimatedCost = (double)(2 - ((idxNum&4)!=0));
    pIdxInfo->estimatedRows = 1000;
-    if( pIdxInfo->nOrderBy>=1 && pIdxInfo->aOrderBy[0].iColumn==0 ){
-      if( pIdxInfo->aOrderBy[0].desc ){
-        idxNum |= 8;
-      }else{
-        idxNum |= 16;
-      }
+    if( pIdxInfo->nOrderBy==1 ){
+      if( pIdxInfo->aOrderBy[0].desc ) idxNum |= 8;
      pIdxInfo->orderByConsumed = 1;
    }
  }else{
@@ -448,7 +424,7 @@ int sqlite3_series_init(
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
 #ifndef SQLITE_OMIT_VIRTUALTABLE
-  if( sqlite3_libversion_number()<3008012 && pzErrMsg!=0 ){
+  if( sqlite3_libversion_number()<3008012 ){
    *pzErrMsg = sqlite3_mprintf(
        "generate_series() requires SQLite 3.8.12 or later");
    return SQLITE_ERROR;
@@ -71,7 +71,7 @@ struct SHA1Context {
 /*
 * Hash a single 512-bit block. This is the core of the algorithm.
 */
-static void SHA1Transform(unsigned int state[5], const unsigned char buffer[64]){
+void SHA1Transform(unsigned int state[5], const unsigned char buffer[64]){
  unsigned int qq[5]; /* a, b, c, d, e; */
  static int one = 1;
  unsigned int block[16];
@@ -19,7 +19,7 @@
 ** The sha3(X) function computes the SHA3 hash of the input X, or NULL if
 ** X is NULL.
 **
-** The sha3_query(Y) function evaluates all queries in the SQL statements of Y
+** The sha3_query(Y) function evalutes all queries in the SQL statements of Y
 ** and returns a hash of their results.
 **
 ** The SIZE argument is optional.  If omitted, the SHA3-256 hash algorithm
@@ -31,10 +31,7 @@ SQLITE_EXTENSION_INIT1
 #include <assert.h>
 #include <string.h>
 #include <stdarg.h>
-
-#ifndef SQLITE_AMALGAMATION
 typedef sqlite3_uint64 u64;
-#endif /* SQLITE_AMALGAMATION */

 /******************************************************************************
 ** The Hash Engine
@@ -436,7 +433,6 @@ static void SHA3Update(
  unsigned int nData
 ){
  unsigned int i = 0;
-  if( aData==0 ) return;
 #if SHA3_BYTEORDER==1234
  if( (p->nLoaded % 8)==0 && ((aData - (const unsigned char*)0)&7)==0 ){
    for(; i+7<nData; i+=8){
@@ -754,7 +754,6 @@ static int vlogCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p){
 */
 int sqlite3_register_vfslog(const char *zArg){
  vlog_vfs.pVfs = sqlite3_vfs_find(0);
-  if( vlog_vfs.pVfs==0 ) return SQLITE_ERROR;
  vlog_vfs.base.szOsFile = sizeof(VLogFile) + vlog_vfs.pVfs->szOsFile;
  return sqlite3_vfs_register(&vlog_vfs.base, 1);
 }
@@ -806,7 +806,6 @@ int sqlite3_vfsstat_init(
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
  vstat_vfs.pVfs = sqlite3_vfs_find(0);
-  if( vstat_vfs.pVfs==0 ) return SQLITE_ERROR;
  vstat_vfs.base.szOsFile = sizeof(VStatFile) + vstat_vfs.pVfs->szOsFile;
  rc = sqlite3_vfs_register(&vstat_vfs.base, 1);
  if( rc==SQLITE_OK ){
@@ -220,7 +220,7 @@ static int wholenumberBestIndex(
    pIdxInfo->orderByConsumed = 1;
  }
  if( (idxNum & 12)==0 ){
-    pIdxInfo->estimatedCost = 1e99;
+    pIdxInfo->estimatedCost = (double)100000000;
  }else if( (idxNum & 3)==0 ){
    pIdxInfo->estimatedCost = (double)5;
  }else{
@@ -36,30 +36,13 @@ SQLITE_EXTENSION_INIT1

 #ifndef SQLITE_AMALGAMATION

-#ifndef UINT32_TYPE
-# ifdef HAVE_UINT32_T
-#  define UINT32_TYPE uint32_t
-# else
-#  define UINT32_TYPE unsigned int
-# endif
-#endif
-#ifndef UINT16_TYPE
-# ifdef HAVE_UINT16_T
-#  define UINT16_TYPE uint16_t
-# else
-#  define UINT16_TYPE unsigned short int
-# endif
-#endif
 typedef sqlite3_int64 i64;
 typedef unsigned char u8;
-typedef UINT32_TYPE u32;           /* 4-byte unsigned integer */
-typedef UINT16_TYPE u16;           /* 2-byte unsigned integer */
+typedef unsigned short u16;
+typedef unsigned long u32;
 #define MIN(a,b) ((a)<(b) ? (a) : (b))

 #if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST)
-# define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1
-#endif
-#if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS)
 # define ALWAYS(X)      (1)
 # define NEVER(X)       (0)
 #elif !defined(NDEBUG)
@@ -564,7 +547,6 @@ static u16 zipfileGetU16(const u8 *aBuf){
 ** Read and return a 32-bit little-endian unsigned integer from buffer aBuf.
 */
 static u32 zipfileGetU32(const u8 *aBuf){
-  if( aBuf==0 ) return 0;
  return ((u32)(aBuf[3]) << 24)
       + ((u32)(aBuf[2]) << 16)
       + ((u32)(aBuf[1]) <<  8)
@@ -724,24 +706,34 @@ static int zipfileScanExtra(u8 *aExtra, int nExtra, u32 *pmTime){
 ** https://msdn.microsoft.com/en-us/library/9kkf9tah.aspx
 */
 static u32 zipfileMtime(ZipfileCDS *pCDS){
-  int Y,M,D,X1,X2,A,B,sec,min,hr;
-  i64 JDsec;
-  Y = (1980 + ((pCDS->mDate >> 9) & 0x7F));
-  M = ((pCDS->mDate >> 5) & 0x0F);
-  D = (pCDS->mDate & 0x1F);
-  sec = (pCDS->mTime & 0x1F)*2;
-  min = (pCDS->mTime >> 5) & 0x3F;
-  hr = (pCDS->mTime >> 11) & 0x1F;
-  if( M<=2 ){
-    Y--;
-    M += 12;
+  int Y = (1980 + ((pCDS->mDate >> 9) & 0x7F));
+  int M = ((pCDS->mDate >> 5) & 0x0F);
+  int D = (pCDS->mDate & 0x1F);
+  int B = -13;
+
+  int sec = (pCDS->mTime & 0x1F)*2;
+  int min = (pCDS->mTime >> 5) & 0x3F;
+  int hr = (pCDS->mTime >> 11) & 0x1F;
+  i64 JD;
+
+  /* JD = INT(365.25 * (Y+4716)) + INT(30.6001 * (M+1)) + D + B - 1524.5 */
+
+  /* Calculate the JD in seconds for noon on the day in question */
+  if( M<3 ){
+    Y = Y-1;
+    M = M+12;
  }
-  X1 = 36525*(Y+4716)/100;
-  X2 = 306001*(M+1)/10000;
-  A = Y/100;
-  B = 2 - A + (A/4);
-  JDsec = (i64)((X1 + X2 + D + B - 1524.5)*86400) + hr*3600 + min*60 + sec;
-  return (u32)(JDsec - (i64)24405875*(i64)8640);
+  JD = (i64)(24*60*60) * (
+      (int)(365.25 * (Y + 4716))
+    + (int)(30.6001 * (M + 1))
+    + D + B - 1524
+  );
+
+  /* Correct the JD for the time within the day */
+  JD += (hr-12) * 3600 + min * 60 + sec;
+
+  /* Convert JD to unix timestamp (the JD epoch is 2440587.5) */
+  return (u32)(JD - (i64)(24405875) * 24*60*6);
 }

 /*
@@ -867,7 +859,7 @@ static int zipfileGetEntry(
        aRead = (u8*)&aBlob[pNew->cds.iOffset];
      }

-      if( rc==SQLITE_OK ) rc = zipfileReadLFH(aRead, &lfh);
+      rc = zipfileReadLFH(aRead, &lfh);
      if( rc==SQLITE_OK ){
        pNew->iDataOff =  pNew->cds.iOffset + ZIPFILE_LFH_FIXED_SZ;
        pNew->iDataOff += lfh.nFile + lfh.nExtra;
@@ -1143,13 +1135,13 @@ static int zipfileReadEOCD(
  int nRead;                      /* Bytes to read from file */
  int rc = SQLITE_OK;

-  memset(pEOCD, 0, sizeof(ZipfileEOCD));
  if( aBlob==0 ){
    i64 iOff;                     /* Offset to read from */
    i64 szFile;                   /* Total size of file in bytes */
    fseek(pFile, 0, SEEK_END);
    szFile = (i64)ftell(pFile);
    if( szFile==0 ){
+      memset(pEOCD, 0, sizeof(ZipfileEOCD));
      return SQLITE_OK;
    }
    nRead = (int)(MIN(szFile, ZIPFILE_BUFFER_SIZE));
@@ -1262,14 +1254,9 @@ static int zipfileFilter(
    zipfileCursorErr(pCsr, "zipfile() function requires an argument");
    return SQLITE_ERROR;
  }else if( sqlite3_value_type(argv[0])==SQLITE_BLOB ){
-    static const u8 aEmptyBlob = 0;
    const u8 *aBlob = (const u8*)sqlite3_value_blob(argv[0]);
    int nBlob = sqlite3_value_bytes(argv[0]);
    assert( pTab->pFirstEntry==0 );
-    if( aBlob==0 ){
-      aBlob = &aEmptyBlob;
-      nBlob = 0;
-    }
    rc = zipfileLoadDirectory(pTab, aBlob, nBlob);
    pCsr->pFreeEntry = pTab->pFirstEntry;
    pTab->pFirstEntry = pTab->pLastEntry = 0;
@@ -1495,7 +1482,6 @@ static int zipfileBegin(sqlite3_vtab *pVtab){
 static u32 zipfileTime(void){
  sqlite3_vfs *pVfs = sqlite3_vfs_find(0);
  u32 ret;
-  if( pVfs==0 ) return 0;
  if( pVfs->iVersion>=2 && pVfs->xCurrentTimeInt64 ){
    i64 ms;
    pVfs->xCurrentTimeInt64(pVfs, &ms);
@@ -1943,7 +1929,7 @@ static int zipfileBufferGrow(ZipfileBuffer *pBuf, int nByte){
 **   SELECT zipfile(name,mode,mtime,data) ...
 **   SELECT zipfile(name,mode,mtime,data,method) ...
 */
-static void zipfileStep(sqlite3_context *pCtx, int nVal, sqlite3_value **apVal){
+void zipfileStep(sqlite3_context *pCtx, int nVal, sqlite3_value **apVal){
  ZipfileCtx *p;                  /* Aggregate function context */
  ZipfileEntry e;                 /* New entry to add to zip archive */

@@ -2118,7 +2104,7 @@ static void zipfileStep(sqlite3_context *pCtx, int nVal, sqlite3_value **apVal){
 /*
 ** xFinalize() callback for zipfile aggregate function.
 */
-static void zipfileFinal(sqlite3_context *pCtx){
+void zipfileFinal(sqlite3_context *pCtx){
  ZipfileCtx *p;
  ZipfileEOCD eocd;
  sqlite3_int64 nZip;
@@ -2175,10 +2161,6 @@ static int zipfileRegister(sqlite3 *db){
    zipfileRollback,           /* xRollback */
    zipfileFindFunction,       /* xFindMethod */
    0,                         /* xRename */
-    0,                         /* xSavepoint */
-    0,                         /* xRelease */
-    0,                         /* xRollback */
-    0                          /* xShadowName */
  };

  int rc = sqlite3_create_module(db, "zipfile"  , &zipfileModule, 0);
@@ -2188,10 +2170,6 @@ static int zipfileRegister(sqlite3 *db){
        zipfileStep, zipfileFinal
    );
  }
-  assert( sizeof(i64)==8 );
-  assert( sizeof(u32)==4 );
-  assert( sizeof(u16)==2 );
-  assert( sizeof(u8)==1 );
  return rc;
 }
 #else         /* SQLITE_OMIT_VIRTUALTABLE */
@@ -56,7 +56,7 @@ void usage(const char *zArgv0){

 void report_default_vfs(){
  sqlite3_vfs *pVfs = sqlite3_vfs_find(0);
-  fprintf(stdout, "default vfs is \"%s\"\n", pVfs ? pVfs->zName : "NULL");
+  fprintf(stdout, "default vfs is \"%s\"\n", pVfs->zName);
 }

 void report_rbu_vfs(sqlite3rbu *pRbu){
@@ -183,13 +183,6 @@ int main(int argc, char **argv){
      break;
  }

-  if( nStatStep>0 ){
-    sqlite3_int64 nUsed;
-    sqlite3_int64 nHighwater;
-    sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &nUsed, &nHighwater, 0);
-    fprintf(stdout, "memory used=%lld highwater=%lld\n", nUsed, nHighwater);
-  }
-
  sqlite3_free(zErrmsg);
  return (rc==SQLITE_OK || rc==SQLITE_DONE) ? 0 : 1;
 }
@@ -132,11 +132,6 @@ foreach {tn3 create_vfs destroy_vfs} {
  } {
    sqlite3rbu_destroy_vfs myrbu
  }
-  3 {
-    sqlite3_register_cksumvfs
-  } {
-    sqlite3_unregister_cksumvfs
-  }
 } {

  eval $create_vfs
@@ -50,7 +50,7 @@ do_test 1.1 {
 #
 ifcapable fts3 {
  do_execsql_test 2.0 {
-    create virtual TABLE ft USING fts4(a, b, languageid='langid');
+    CREATE VIRTUAL TABLE ft USING fts4(a, b, languageid='langid');
  }
  do_test 2.1 {
    apply_rbu {
@@ -1,87 +0,0 @@
-# 2014 August 30
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-#
-
-source [file join [file dirname [info script]] rbu_common.tcl]
-set ::testprefix rbubusy
-
-db close
-sqlite3_shutdown
-test_sqlite3_log xLog
-reset_db
-
-set db_sql {
-  CREATE TABLE t1(a PRIMARY KEY, b, c);
-  INSERT INTO t1 VALUES(1000, 2000, 3000);
-}
-
-set rbu_sql {
-  CREATE TABLE data_t1(a, b, c, rbu_control);
-  INSERT INTO data_t1 VALUES(1, 2, 3, 0);
-  INSERT INTO data_t1 VALUES(4, 5, 6, 0);
-  INSERT INTO data_t1 VALUES(7, 8, 9, 0);
-}
-
-do_test 1.1 {
-  forcedelete rbu.db
-  sqlite3 rbu rbu.db
-  rbu eval $rbu_sql
-  rbu close
-
-  db eval $db_sql
-} {}
-
-do_execsql_test 1.2 {
-  BEGIN;
-    SELECT * FROM t1
-} {1000 2000 3000}
-
-do_test 1.3 {
-  sqlite3rbu rbu test.db rbu.db
-  rbu step
-} {SQLITE_OK}
-
-do_test 1.4 {
-  while 1 {
-    set rc [rbu step]
-    if {$rc!="SQLITE_OK"} break
-  }
-  set rc
-} {SQLITE_BUSY}
-
-do_test 1.5 {
-  rbu step
-} {SQLITE_BUSY}
-
-do_test 1.6 {
-  db eval COMMIT
-  rbu step
-} {SQLITE_BUSY}
-catch { rbu close }
-
-do_test 1.7 {
-  sqlite3rbu rbu test.db rbu.db
-  while 1 {
-    set rc [rbu step]
-    if {$rc!="SQLITE_OK"} break
-  }
-  set rc
-} {SQLITE_DONE}
-
-rbu close
-
-db close
-sqlite3_shutdown
-test_sqlite3_log 
-sqlite3_initialize
-finish_test
-
@@ -268,14 +268,6 @@ tablE t1 USING FTs5(c);
      DELETE FROM t1 WHERE rowid = 1;
      INSERT INTO t1 VALUES('a b c');
    }
-    4 {
-      creAte virTUal tablE	t1	USING FTs5(c);
-      INSERT INTO t1 VALUES('a b c');
-      INSERT INTO t1 VALUES('a b c');
-    } {
-      DELETE FROM t1 WHERE rowid = 1;
-      INSERT INTO t1 VALUES('a b c');
-    }

  } {
    forcedelete test.db test.db2
@@ -1,207 +0,0 @@
-# 2021 November 06
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-
-source [file join [file dirname [info script]] rbu_common.tcl]
-set ::testprefix rbuexlock
-
-db close
-sqlite3_shutdown
-sqlite3_config_uri 1
-
-# Create a simple RBU database. That expects to write to a table:
-#
-#   CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
-#
-proc create_rbu {filename} {
-  forcedelete $filename
-  sqlite3 rbu1 $filename  
-  rbu1 eval {
-    CREATE TABLE data_t1(a, b, c, rbu_control);
-    INSERT INTO data_t1 VALUES(10, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(20, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(30, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(40, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(50, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(60, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(70, random(), random(), 0);
-    INSERT INTO data_t1 VALUES(80, random(), random(), 0);
-  }
-  rbu1 close
-  return $filename
-}
-
-reset_db
-
-do_execsql_test 1.0 {
-  CREATE TABLE t1(a PRIMARY KEY, b INT, c INT);
-  CREATE INDEX t1b ON t1(b);
-  CREATE INDEX t1c ON t1(c);
-  INSERT INTO t1 VALUES(1, 2, 3);
-}
-create_rbu rbu1.db
-
-do_test 1.1.0 {
-  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=1 rbu1.db
-  rbu step
-} SQLITE_OK
-do_catchsql_test 1.1.1 { SELECT * FROM t1 } {0 {1 2 3}}
-
-do_test 1.2.0 {
-  for {set ii 0} {$ii < 10} {incr ii} {
-    rbu step
-  }
-  rbu step
-} SQLITE_OK
-do_catchsql_test 1.2.1 { SELECT * FROM t1 } {0 {1 2 3}}
-do_test 1.2.2 {
-  db eval {PRAGMA journal_mode}
-} {delete}
-
-do_test 1.3.0 {
-  while {[file exists test.db-wal]==0} {
-    rbu step
-  }
-} {}
-do_catchsql_test 1.3.1 { SELECT * FROM t1 } {1 {database is locked}}
-do_test 1.3.2 {
-  db eval {PRAGMA journal_mode}
-} {delete}
-
-
-do_test 1.4.0 {
-  rbu step
-} SQLITE_OK
-do_catchsql_test 1.4.1 { SELECT * FROM t1 } {1 {database is locked}}
-do_test 1.4.2 {
-  db eval {PRAGMA journal_mode}
-} {delete}
-
-
-rbu close
-
-do_test 1.5.0 {
-  file exists test.db-wal
-} {1}
-do_test 1.5.1 {
-  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=1 rbu1.db
-  file exists test.db-wal
-} 1
-do_catchsql_test 1.5.2 { SELECT * FROM t1 } {1 {database is locked}}
-do_test 1.5.2 {
-  db eval {PRAGMA journal_mode}
-} {delete}
-
-
-do_test 1.6.0 {
-  rbu step
-} SQLITE_OK
-do_catchsql_test 1.6.1 { SELECT * FROM t1 } {1 {database is locked}}
-do_test 1.6.2 {
-  db eval {PRAGMA journal_mode}
-} {delete}
-
-do_test 1.7.0 {
-  while {[rbu step]=="SQLITE_OK"} {}
-  rbu close
-} SQLITE_DONE
-do_catchsql_test 1.7.2 { SELECT count(*) FROM t1 } {0 9}
-do_test 1.7.2 {
-  db eval {PRAGMA journal_mode}
-} {delete}
-
-reset_db
-do_execsql_test 2.0 {
-  CREATE TABLE t1(a PRIMARY KEY, b INT, c INT);
-  CREATE INDEX t1b ON t1(b);
-  CREATE INDEX t1c ON t1(c);
-  INSERT INTO t1 VALUES(1, 2, 3);
-}
-create_rbu rbu1.db
-
-do_test 2.1.0 {
-  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
-  rbu step
-} SQLITE_OK
-do_catchsql_test 2.1.1 { SELECT * FROM t1 } {0 {1 2 3}}
-
-do_test 2.2.0 {
-  for {set ii 0} {$ii < 10} {incr ii} {
-    rbu step
-  }
-  rbu step
-} SQLITE_OK
-do_catchsql_test 2.2.1 { SELECT * FROM t1 } {0 {1 2 3}}
-
-do_test 2.3.0 {
-  while {[file exists test.db-wal]==0} {
-    rbu step
-  }
-} {}
-do_test 2.3.1 {
-  llength [db eval {SELECT * FROM t1}]
-} {27}
-do_test 2.3.2 {
-  db eval {PRAGMA journal_mode}
-} {wal}
-
-do_test 2.4.0 {
-  rbu step
-} SQLITE_OK
-do_test 2.4.1 {
-  llength [db eval  {SELECT * FROM t1}]
-} {27}
-do_test 2.4.2 {
-  db eval {PRAGMA journal_mode}
-} {wal}
-
-rbu close
-
-do_test 2.5.0 {
-  db eval {PRAGMA journal_mode}
-} {wal}
-do_execsql_test 2.5.1 {
-  DELETE FROM t1;
-} {}
-
-create_rbu rbu1.db
-do_test 3.1.0 {
-  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
-  rbu step
-} SQLITE_ERROR
-
-do_test 3.1.1 {
-  set rc [catch {rbu close} msg]
-  lappend rc $msg
-} {1 {SQLITE_ERROR - cannot update wal mode database}}
-db eval {PRAGMA journal_mode=DELETE}
-
-create_rbu rbu1.db
-do_test 3.2.0 {
-  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
-  rbu step
-} SQLITE_OK
-
-do_test 3.3.1 {
-  set rc [catch {rbu close} msg]
-  lappend rc $msg
-} {0 SQLITE_OK}
-
-db close
-create_rbu rbu1.db
-do_test 3.4.0 {
-  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
-  rbu step
-} SQLITE_OK
-rbu close
-
-
-finish_test
@@ -198,11 +198,7 @@ if {$::tcl_platform(platform)=="unix"} {
    } {SQLITE_OK}

    do_test 5.$tn.2 { file exists test.db-vacuum } 1
-    # The result pattern might be 00xxx or 0oxxx depending on which
-    # version of TCL is being used.  So make perm2 into a regexp that
-    # will match either
-    regsub {^00} $perm {0.} perm2
-    do_test 5.$tn.3 { file attributes test.db-vacuum -permissions} /$perm2/
+    do_test 5.$tn.3 { file attributes test.db-vacuum -permissions} $perm
    rbu close
  }
 }
@@ -110,13 +110,6 @@
 # define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;}
 #endif

-/*
-** Name of the URI option that causes RBU to take an exclusive lock as
-** part of the incremental checkpoint operation.
-*/
-#define RBU_EXCLUSIVE_CHECKPOINT "rbu_exclusive_checkpoint"
-
-
 /*
 ** The rbu_state table is used to save the state of a partially applied
 ** update so that it can be resumed later. The table consists of integer
@@ -1201,9 +1194,7 @@ static void rbuTableType(
  assert( p->rc==SQLITE_OK );
  p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[0], &p->zErrmsg, 
    sqlite3_mprintf(
-          "SELECT "
-          " (sql COLLATE nocase BETWEEN 'CREATE VIRTUAL' AND 'CREATE VIRTUAM'),"
-          " rootpage"
+          "SELECT (sql LIKE 'create virtual%%'), rootpage"
          "  FROM sqlite_schema"
          " WHERE name=%Q", zTab
  ));
@@ -1563,7 +1554,7 @@ static char *rbuVacuumTableStart(
 ** the caller has to use an OFFSET clause to extract only the required 
 ** rows from the sourct table, just as it does for an RBU update operation.
 */
-static char *rbuVacuumIndexStart(
+char *rbuVacuumIndexStart(
  sqlite3rbu *p,                  /* RBU handle */
  RbuObjIter *pIter               /* RBU iterator object */
 ){
@@ -1629,9 +1620,7 @@ static char *rbuVacuumIndexStart(
      zSep = "";
      for(iCol=0; iCol<pIter->nCol; iCol++){
        const char *zQuoted = (const char*)sqlite3_column_text(pSel, iCol);
-        if( zQuoted==0 ){
-          p->rc = SQLITE_NOMEM;
-        }else if( zQuoted[0]=='N' ){
+        if( zQuoted[0]=='N' ){
          bFailed = 1;
          break;
        }
@@ -2736,7 +2725,7 @@ static RbuState *rbuLoadState(sqlite3rbu *p){
        break;

      case RBU_STATE_OALSZ:
-        pRet->iOalSz = sqlite3_column_int64(pStmt, 1);
+        pRet->iOalSz = (u32)sqlite3_column_int64(pStmt, 1);
        break;

      case RBU_STATE_PHASEONESTEP:
@@ -2763,19 +2752,13 @@ static RbuState *rbuLoadState(sqlite3rbu *p){
 /*
 ** Open the database handle and attach the RBU database as "rbu". If an
 ** error occurs, leave an error code and message in the RBU handle.
-**
-** If argument dbMain is not NULL, then it is a database handle already
-** open on the target database. Use this handle instead of opening a new
-** one.
 */
-static void rbuOpenDatabase(sqlite3rbu *p, sqlite3 *dbMain, int *pbRetry){
+static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){
  assert( p->rc || (p->dbMain==0 && p->dbRbu==0) );
  assert( p->rc || rbuIsVacuum(p) || p->zTarget!=0 );
-  assert( dbMain==0 || rbuIsVacuum(p)==0 );

  /* Open the RBU database */
  p->dbRbu = rbuOpenDbhandle(p, p->zRbu, 1);
-  p->dbMain = dbMain;

  if( p->rc==SQLITE_OK && rbuIsVacuum(p) ){
    sqlite3_file_control(p->dbRbu, "main", SQLITE_FCNTL_RBUCNT, (void*)p);
@@ -3141,31 +3124,15 @@ static void rbuCheckpointFrame(sqlite3rbu *p, RbuFrame *pFrame){


 /*
-** Take an EXCLUSIVE lock on the database file. Return SQLITE_OK if
-** successful, or an SQLite error code otherwise.
+** Take an EXCLUSIVE lock on the database file.
 */
-static int rbuLockDatabase(sqlite3 *db){
-  int rc = SQLITE_OK;
-  sqlite3_file *fd = 0;
-  sqlite3_file_control(db, "main", SQLITE_FCNTL_FILE_POINTER, &fd);
-
-  if( fd->pMethods ){
-    rc = fd->pMethods->xLock(fd, SQLITE_LOCK_SHARED);
-    if( rc==SQLITE_OK ){
-      rc = fd->pMethods->xLock(fd, SQLITE_LOCK_EXCLUSIVE);
-    }
+static void rbuLockDatabase(sqlite3rbu *p){
+  sqlite3_file *pReal = p->pTargetFd->pReal;
+  assert( p->rc==SQLITE_OK );
+  p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_SHARED);
+  if( p->rc==SQLITE_OK ){
+    p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_EXCLUSIVE);
  }
-  return rc;
-}
-
-/*
-** Return true if the database handle passed as the only argument
-** was opened with the rbu_exclusive_checkpoint=1 URI parameter
-** specified. Or false otherwise.
-*/
-static int rbuExclusiveCheckpoint(sqlite3 *db){
-  const char *zUri = sqlite3_db_filename(db, 0);
-  return sqlite3_uri_boolean(zUri, RBU_EXCLUSIVE_CHECKPOINT, 0);
 }

 #if defined(_WIN32_WCE)
@@ -3223,24 +3190,18 @@ static void rbuMoveOalFile(sqlite3rbu *p){
    ** In order to ensure that there are no database readers, an EXCLUSIVE
    ** lock is obtained here before the *-oal is moved to *-wal.
    */
-    sqlite3 *dbMain = 0;
-    rbuFileSuffix3(zBase, zWal);
-    rbuFileSuffix3(zBase, zOal);
-
-    /* Re-open the databases. */
-    rbuObjIterFinalize(&p->objiter);
-    sqlite3_close(p->dbRbu);
-    sqlite3_close(p->dbMain);
-    p->dbMain = 0;
-    p->dbRbu = 0;
-
-    dbMain = rbuOpenDbhandle(p, p->zTarget, 1);
-    if( dbMain ){
-      assert( p->rc==SQLITE_OK );
-      p->rc = rbuLockDatabase(dbMain);
-    }
-
+    rbuLockDatabase(p);
    if( p->rc==SQLITE_OK ){
+      rbuFileSuffix3(zBase, zWal);
+      rbuFileSuffix3(zBase, zOal);
+
+      /* Re-open the databases. */
+      rbuObjIterFinalize(&p->objiter);
+      sqlite3_close(p->dbRbu);
+      sqlite3_close(p->dbMain);
+      p->dbMain = 0;
+      p->dbRbu = 0;
+
 #if defined(_WIN32_WCE)
      {
        LPWSTR zWideOal;
@@ -3267,19 +3228,11 @@ static void rbuMoveOalFile(sqlite3rbu *p){
 #else
      p->rc = rename(zOal, zWal) ? SQLITE_IOERR : SQLITE_OK;
 #endif
-    }

-    if( p->rc!=SQLITE_OK 
-     || rbuIsVacuum(p) 
-     || rbuExclusiveCheckpoint(dbMain)==0 
-    ){
-      sqlite3_close(dbMain);
-      dbMain = 0;
-    }
-
-    if( p->rc==SQLITE_OK ){
-      rbuOpenDatabase(p, dbMain, 0);
-      rbuSetupCheckpoint(p, 0);
+      if( p->rc==SQLITE_OK ){
+        rbuOpenDatabase(p, 0);
+        rbuSetupCheckpoint(p, 0);
+      }
    }
  }

@@ -4030,9 +3983,9 @@ static sqlite3rbu *openRbuHandle(
      ** If this is the case, it will have been checkpointed and deleted
      ** when the handle was closed and a second attempt to open the 
      ** database may succeed.  */
-      rbuOpenDatabase(p, 0, &bRetry);
+      rbuOpenDatabase(p, &bRetry);
      if( bRetry ){
-        rbuOpenDatabase(p, 0, 0);
+        rbuOpenDatabase(p, 0);
      }
    }

@@ -4127,14 +4080,6 @@ static sqlite3rbu *openRbuHandle(
      }else if( p->eStage==RBU_STAGE_MOVE ){
        /* no-op */
      }else if( p->eStage==RBU_STAGE_CKPT ){
-        if( !rbuIsVacuum(p) && rbuExclusiveCheckpoint(p->dbMain) ){
-          /* If the rbu_exclusive_checkpoint=1 URI parameter was specified
-          ** and an incremental checkpoint is being resumed, attempt an
-          ** exclusive lock on the db file. If this fails, so be it.  */
-          p->eStage = RBU_STAGE_DONE;
-          rbuLockDatabase(p->dbMain);
-          p->eStage = RBU_STAGE_CKPT;
-        }
        rbuSetupCheckpoint(p, pState);
      }else if( p->eStage==RBU_STAGE_DONE ){
        p->rc = SQLITE_DONE;
@@ -4172,6 +4117,7 @@ sqlite3rbu *sqlite3rbu_open(
  const char *zState
 ){
  if( zTarget==0 || zRbu==0 ){ return rbuMisuseError(); }
+  /* TODO: Check that zTarget and zRbu are non-NULL */
  return openRbuHandle(zTarget, zRbu, zState);
 }

@@ -4882,24 +4828,22 @@ static int rbuVfsShmLock(sqlite3_file *pFile, int ofst, int n, int flags){
 #endif

  assert( p->openFlags & (SQLITE_OPEN_MAIN_DB|SQLITE_OPEN_TEMP_DB) );
-  if( pRbu && (
-       pRbu->eStage==RBU_STAGE_OAL 
-    || pRbu->eStage==RBU_STAGE_MOVE 
-    || pRbu->eStage==RBU_STAGE_DONE
-  )){
-    /* Prevent SQLite from taking a shm-lock on the target file when it 
-    ** is supplying heap memory to the upper layer in place of *-shm 
-    ** segments. */
+  if( pRbu && (pRbu->eStage==RBU_STAGE_OAL || pRbu->eStage==RBU_STAGE_MOVE) ){
+    /* Magic number 1 is the WAL_CKPT_LOCK lock. Preventing SQLite from
+    ** taking this lock also prevents any checkpoints from occurring. 
+    ** todo: really, it's not clear why this might occur, as 
+    ** wal_autocheckpoint ought to be turned off.  */
    if( ofst==WAL_LOCK_CKPT && n==1 ) rc = SQLITE_BUSY;
  }else{
    int bCapture = 0;
    if( pRbu && pRbu->eStage==RBU_STAGE_CAPTURE ){
      bCapture = 1;
    }
+
    if( bCapture==0 || 0==(flags & SQLITE_SHM_UNLOCK) ){
      rc = p->pReal->pMethods->xShmLock(p->pReal, ofst, n, flags);
      if( bCapture && rc==SQLITE_OK ){
-        pRbu->mLock |= ((1<<n) - 1) << ofst;
+        pRbu->mLock |= (1 << ofst);
      }
    }
  }
@@ -5046,14 +4990,28 @@ static int rbuVfsOpen(
      rbu_file *pDb = rbuFindMaindb(pRbuVfs, zName, 0);
      if( pDb ){
        if( pDb->pRbu && pDb->pRbu->eStage==RBU_STAGE_OAL ){
-          /* This call is to open a *-wal file. Intead, open the *-oal. */
-          size_t nOpen;
+          /* This call is to open a *-wal file. Intead, open the *-oal. This
+          ** code ensures that the string passed to xOpen() is terminated by a
+          ** pair of '\0' bytes in case the VFS attempts to extract a URI 
+          ** parameter from it.  */
+          const char *zBase = zName;
+          size_t nCopy;
+          char *zCopy;
          if( rbuIsVacuum(pDb->pRbu) ){
-            zOpen = sqlite3_db_filename(pDb->pRbu->dbRbu, "main");
-            zOpen = sqlite3_filename_wal(zOpen);
+            zBase = sqlite3_db_filename(pDb->pRbu->dbRbu, "main");
+            zBase = sqlite3_filename_wal(zBase);
+          }
+          nCopy = strlen(zBase);
+          zCopy = sqlite3_malloc64(nCopy+2);
+          if( zCopy ){
+            memcpy(zCopy, zBase, nCopy);
+            zCopy[nCopy-3] = 'o';
+            zCopy[nCopy] = '\0';
+            zCopy[nCopy+1] = '\0';
+            zOpen = (const char*)(pFd->zDel = zCopy);
+          }else{
+            rc = SQLITE_NOMEM;
          }
-          nOpen = strlen(zOpen);
-          ((char*)zOpen)[nOpen-3] = 'o';
          pFd->pRbu = pDb->pRbu;
        }
        pDb->pWalFd = pFd;
@@ -44,19 +44,8 @@ SQLITE_EXTENSION_INIT1
 # include <stdio.h>
 # include <stdlib.h>
 # include <assert.h>
-# if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST)
-#   define SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS 1
-# endif
-# if defined(SQLITE_OMIT_AUXILIARY_SAFETY_CHECKS)
-#   define ALWAYS(X)      (1)
-#   define NEVER(X)       (0)
-# elif !defined(NDEBUG)
-#   define ALWAYS(X)      ((X)?1:(assert(0),0))
-#   define NEVER(X)       ((X)?(assert(0),1):0)
-# else
-#   define ALWAYS(X)      (X)
-#   define NEVER(X)       (X)
-# endif
+# define ALWAYS(X)  1
+# define NEVER(X)   0
  typedef unsigned char u8;
  typedef unsigned short u16;
  typedef unsigned int u32;
@@ -4,6 +4,7 @@
 */
 #define TCLSH_INIT_PROC sqlite3_checker_init_proc
 #define SQLITE_ENABLE_DBPAGE_VTAB 1
+#define SQLITE_ENABLE_JSON1 1
 #undef SQLITE_THREADSAFE
 #define SQLITE_THREADSAFE 0
 #undef SQLITE_ENABLE_COLUMN_METADATA
@@ -26,7 +26,11 @@
 # define GEODEBUG(X)
 #endif

-/* Character class routines */
+#ifndef JSON_NULL   /* The following stuff repeats things found in json1 */
+/*
+** Versions of isspace(), isalnum() and isdigit() to which it is safe
+** to pass signed char values.
+*/
 #ifdef sqlite3Isdigit
   /* Use the SQLite core versions if this routine is part of the
   ** SQLite amalgamation */
@@ -41,7 +45,6 @@
 #  define safe_isxdigit(x) isxdigit((unsigned char)(x))
 #endif

-#ifndef JSON_NULL   /* The following stuff repeats things found in json1 */
 /*
 ** Growing our own isspace() routine this way is twice as fast as
 ** the library isspace() function.
@@ -64,7 +67,7 @@ static const char geopolyIsSpace[] = {
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
 };
-#define fast_isspace(x) (geopolyIsSpace[(unsigned char)x])
+#define safe_isspace(x) (geopolyIsSpace[(unsigned char)x])
 #endif /* JSON NULL - back to original code */

 /* Compiler and version */
@@ -153,7 +156,7 @@ static void geopolySwab32(unsigned char *a){

 /* Skip whitespace.  Return the next non-whitespace character. */
 static char geopolySkipSpace(GeoParse *p){
-  while( fast_isspace(p->z[0]) ) p->z++;
+  while( safe_isspace(p->z[0]) ) p->z++;
  return p->z[0];
 }

@@ -302,16 +305,11 @@ static GeoPoly *geopolyFuncParam(
 ){
  GeoPoly *p = 0;
  int nByte;
-  testcase( pCtx==0 );
  if( sqlite3_value_type(pVal)==SQLITE_BLOB
   && (nByte = sqlite3_value_bytes(pVal))>=(4+6*sizeof(GeoCoord))
  ){
    const unsigned char *a = sqlite3_value_blob(pVal);
    int nVertex;
-    if( a==0 ){
-      if( pCtx ) sqlite3_result_error_nomem(pCtx);
-      return 0;
-    }
    nVertex = (a[1]<<16) + (a[2]<<8) + a[3];
    if( (a[0]==0 || a[0]==1)
     && (nVertex*2*sizeof(GeoCoord) + 4)==(unsigned int)nByte
@@ -685,7 +683,7 @@ static GeoPoly *geopolyBBox(
      aCoord[2].f = mnY;
      aCoord[3].f = mxY;
    }
-  }else if( aCoord ){
+  }else{
    memset(aCoord, 0, sizeof(RtreeCoord)*4);
  }
  return pOut;
@@ -1136,11 +1134,11 @@ static int geopolyOverlap(GeoPoly *p1, GeoPoly *p2){
    }else{
      /* Remove a segment */
      if( pActive==pThisEvent->pSeg ){
-        pActive = ALWAYS(pActive) ? pActive->pNext : 0;
+        pActive = pActive->pNext;
      }else{
        for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){
          if( pSeg->pNext==pThisEvent->pSeg ){
-            pSeg->pNext = ALWAYS(pSeg->pNext) ? pSeg->pNext->pNext : 0;
+            pSeg->pNext = pSeg->pNext->pNext;
            break;
          }
        }
@@ -1384,7 +1382,6 @@ static int geopolyFilter(
      RtreeCoord bbox[4];
      RtreeConstraint *p;
      assert( argc==1 );
-      assert( argv[0]!=0 );
      geopolyBBox(0, argv[0], bbox, &rc);
      if( rc ){
        goto geopoly_filter_end;
@@ -1612,7 +1609,6 @@ static int geopolyUpdate(
        || !sqlite3_value_nochange(aData[2])  /* UPDATE _shape */
        || oldRowid!=newRowid)                /* Rowid change */
  ){
-    assert( aData[2]!=0 );
    geopolyBBox(0, aData[2], cell.aCoord, &rc);
    if( rc ){
      if( rc==SQLITE_ERROR ){
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
drh	60405cd15c	Version 3.34.1 FossilOrigin-Name: 10e20c0b43500cfb9bbc0eaa061c57514f715d87238f4d835880cd846b9ebd1f	2021-01-20 14:10:07 +00:00
drh	b08dbd0f28	Fix an issue with sha3_query() when the first argument contains blank SQL statements. FossilOrigin-Name: a1a7a5f238fcfdcd56faba063e381258c9e2944d9b02b31d402a4207a607fc1c	2021-01-19 20:38:13 +00:00
drh	00a0b135ec	Bump the version number to 3.34.1. FossilOrigin-Name: cea7d0f8a3d9b3f5caae63ad555de25b53c577fc8e004127ec18cc7f0c6f1714	2021-01-19 20:17:46 +00:00
drh	90ab71bdc8	Fix a problem handling sub-queries with both a correlated WHERE clause and a "HAVING 0" clause where the parent query is itself an aggregate. The problem was apparently introduced by check-in [6e6b3729e0549de0] FossilOrigin-Name: 30a4c323650cc9498a6dacd1760dd5170d7cc7848c4e96ff6bd64da365f96366	2021-01-19 20:09:44 +00:00
drh	4dca7d4cfb	Prevent potential segfault in the sqlite-expert idxPopulateStat1 context cleanup code. FossilOrigin-Name: 69e31d52b2a7bde1ed72bc7b927ff451139fbc76504e750324e6368ad26b11b1	2021-01-19 20:04:37 +00:00
drh	1dc9cf947b	Fix a typo in the sqlite3_free_filename() documentation. FossilOrigin-Name: 7316ee19c590854545019a56799968143109929049424a8cc1dcf9624f98a544	2020-12-16 13:20:15 +00:00
@@ -1 +1 @@
 .39.0
 .34.1