Origin should not send content for the lock-byte page to the replica, in

sqlite3-rsync. [forum:/forumpost/d14b55e5fa19c25f|Forum post d14b55e5fa19c25f]. FossilOrigin-Name: aa9bd711cc1b0136098388976d22adc0a2fc89f50fe2273ed80ee3e4e50c98b6
New SQL function for testing/debugging use only: parseuri().
2024-10-06 21:26:56 +00:00 · 2024-10-06 15:01:31 +00:00 · 2024-10-05 21:44:21 +00:00 · 2024-10-05 12:02:17 +00:00 · 2024-10-04 17:02:36 +00:00 · 2024-10-03 16:31:08 +00:00
105 changed files with 6948 additions and 2762 deletions
@@ -661,11 +661,16 @@ SQLITE3_SHELL_TARGET_  = sqlite3$(TEXE)
 SQLITE3_SHELL_TARGET_1 =
 SQLITE3_SHELL_TARGET   = $(SQLITE3_SHELL_TARGET_@HAVE_WASI_SDK@)

+# Use $(libtclsqlite3.la_$(HAVE_TCL)) to resolve to either
+# libtclsqlite3.la or an empty value.
+libtclsqlite3.la_0 =
+libtclsqlite3.la_1 = libtclsqlite3.la
+
 # This is the default Makefile target.  The objects listed here
 # are what get build when you type just "make" with no arguments.
 #
 all:	sqlite3.h libsqlite3.la $(SQLITE3_SHELL_TARGET) \
-  $(HAVE_TCL:1=libtclsqlite3.la)
+  $(libtclsqlite3.la_$(HAVE_TCL))

 Makefile: $(TOP)/Makefile.in
 	./config.status
@@ -689,12 +694,26 @@ sqlite3$(TEXE):	shell.c sqlite3.c
 		shell.c sqlite3.c \
 		$(LIBREADLINE) $(TLIBS) -rpath "$(libdir)"

-sqldiff$(TEXE):	$(TOP)/tool/sqldiff.c sqlite3.lo sqlite3.h
-	$(LTLINK) -o $@ $(TOP)/tool/sqldiff.c sqlite3.lo $(TLIBS)
+sqldiff$(TEXE):	$(TOP)/tool/sqldiff.c $(TOP)/ext/misc/sqlite3_stdio.h sqlite3.lo sqlite3.h
+	$(LTLINK) -I$(TOP)/ext/misc -o $@ $(TOP)/tool/sqldiff.c sqlite3.lo $(TLIBS)

 dbhash$(TEXE):	$(TOP)/tool/dbhash.c sqlite3.lo sqlite3.h
 	$(LTLINK) -o $@ $(TOP)/tool/dbhash.c sqlite3.lo $(TLIBS)

+RSYNC_SRC = \
+  $(TOP)/tool/sqlite3-rsync.c \
+  sqlite3.c
+
+RSYNC_OPT = \
+  -DSQLITE_ENABLE_DBPAGE_VTAB \
+  -USQLITE_THREADSAFE \
+  -DSQLITE_THREADSAFE=0 \
+  -DSQLITE_OMIT_LOAD_EXTENSION \
+  -DSQLITE_OMIT_DEPRECATED
+
+sqlite3-rsync$(TEXE):	$(RSYNC_SRC)
+	$(TCC) -o $@ $(RSYNC_OPT) $(RSYNC_SRC) $(TLIBS)
+
 scrub$(TEXE):	$(TOP)/ext/misc/scrub.c sqlite3.lo
 	$(LTLINK) -o $@ -I. -DSCRUB_STANDALONE \
 		$(TOP)/ext/misc/scrub.c sqlite3.lo $(TLIBS)
@@ -1168,8 +1187,6 @@ keywordhash.h:	$(TOP)/tool/mkkeywordhash.c
 # Source and header files that shell.c depends on
 SHELL_DEP = \
    $(TOP)/src/shell.c.in \
-    $(TOP)/ext/consio/console_io.c \
-    $(TOP)/ext/consio/console_io.h \
    $(TOP)/ext/expert/sqlite3expert.c \
    $(TOP)/ext/expert/sqlite3expert.h \
    $(TOP)/ext/intck/sqlite3intck.c \
@@ -1186,9 +1203,13 @@ SHELL_DEP = \
    $(TOP)/ext/misc/percentile.c \
    $(TOP)/ext/misc/regexp.c \
    $(TOP)/ext/misc/series.c \
+    $(TOP)/ext/misc/sha1.c \
    $(TOP)/ext/misc/shathree.c \
    $(TOP)/ext/misc/sqlar.c \
+    $(TOP)/ext/misc/sqlite3_stdio.c \
+    $(TOP)/ext/misc/sqlite3_stdio.h \
    $(TOP)/ext/misc/uint.c \
+    $(TOP)/ext/misc/vfstrace.c \
    $(TOP)/ext/misc/zipfile.c \
    $(TOP)/ext/recover/dbdata.c \
    $(TOP)/ext/recover/sqlite3recover.c \
@@ -1566,7 +1587,12 @@ lib_install:	libsqlite3.la
 	$(INSTALL) -d $(DESTDIR)$(libdir)
 	$(LTINSTALL) libsqlite3.la $(DESTDIR)$(libdir)

-install:	sqlite3$(TEXE) lib_install sqlite3.h sqlite3.pc ${HAVE_TCL:1=tcl_install}
+# Use $(tcl_install_$(HAVE_TCL)) to resolve to either tcl_install or
+# an empty value.
+tcl_install_0 =
+tcl_install_1 = tcl_install
+
+install:	sqlite3$(TEXE) lib_install sqlite3.h sqlite3.pc $(tcl_install_$(HAVE_TCL))
 	$(INSTALL) -d $(DESTDIR)$(bindir)
 	$(LTINSTALL) sqlite3$(TEXE) $(DESTDIR)$(bindir)
 	$(INSTALL) -d $(DESTDIR)$(includedir)
@@ -1626,8 +1652,8 @@ tidy:
 	rm -f LogEst$(TEXE) fts3view$(TEXE) rollback-test$(TEXE) showdb$(TEXE)
 	rm -f showjournal$(TEXE) showstat4$(TEXE) showwal$(TEXE) speedtest1$(TEXE)
 	rm -f wordcount$(TEXE) changeset$(TEXE) version-info$(TEXE)
-	rm -f *.dll *.lib *.exp *.def *.pc *.vsix
-	rm -f sqlite3_analyzer$(TEXE)
+	rm -f *.dll *.lib *.exp *.def *.pc *.vsix *.so *.dylib pkgIndex.tcl
+	rm -f sqlite3_analyzer$(TEXE) sqlite3-rsync$(TEXE)
 	rm -f mptester$(TEXE) rbu$(TEXE)	srcck1$(TEXE)
 	rm -f fuzzershell$(TEXE) fuzzcheck$(TEXE) sqldiff$(TEXE) dbhash$(TEXE)
 	rm -f threadtest5$(TEXE)
@@ -938,7 +938,7 @@ TCLSUFFIX =
 !ENDIF

 !IFNDEF TCLDIR
-TCLDIR = $(TOP)\compat\tcl
+TCLDIR = C:\Tcl
 !ENDIF

 !IFNDEF TCLINCDIR
@@ -1861,12 +1861,25 @@ $(SQLITE3EXE):	shell.c $(SHELL_CORE_DEP) $(LIBRESOBJS) $(SHELL_CORE_SRC) $(SQLIT
 		/link $(SQLITE3EXEPDB) $(LDFLAGS) $(LTLINKOPTS) $(SHELL_LINK_OPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LIBREADLINE) $(LTLIBS) $(TLIBS)

 # <<mark>>
-sqldiff.exe:	$(TOP)\tool\sqldiff.c $(TOP)\ext\consio\console_io.h $(TOP)\ext\consio\console_io.c $(SQLITE3C) $(SQLITE3H) $(LIBRESOBJS)
-	$(LTLINK) $(NO_WARN) -I$(TOP)\ext\consio $(TOP)\tool\sqldiff.c $(TOP)\ext\consio\console_io.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS) $(LIBRESOBJS)
+sqldiff.exe:	$(TOP)\tool\sqldiff.c $(TOP)\ext\misc\sqlite3_stdio.h $(TOP)\ext\misc\sqlite3_stdio.c $(SQLITE3C) $(SQLITE3H) $(LIBRESOBJS)
+	$(LTLINK) $(NO_WARN) -I$(TOP)\ext\misc $(TOP)\tool\sqldiff.c $(TOP)\ext\misc\sqlite3_stdio.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS) $(LIBRESOBJS)

 dbhash.exe:	$(TOP)\tool\dbhash.c $(SQLITE3C) $(SQLITE3H)
 	$(LTLINK) $(NO_WARN) $(TOP)\tool\dbhash.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

+RSYNC_SRC = \
+  $(TOP)\tool\sqlite3-rsync.c \
+  $(SQLITE3C)
+
+RSYNC_OPT = \
+  -DSQLITE_ENABLE_DBPAGE_VTAB \
+  -DSQLITE_THREADSAFE=0 \
+  -DSQLITE_OMIT_LOAD_EXTENSION \
+  -DSQLITE_OMIT_DEPRECATED
+
+sqlite3-rsync.exe:	$(RSYNC_SRC) $(LIBRESOBJS)
+	$(LTLINK) $(RSYNC_OPT) $(NO_WARN) $(RSYNC_SRC) /link $(LDFLAGS) $(LTLINKOPTS) $(LIBRESOBJS)
+
 scrub.exe:	$(TOP)\ext\misc\scrub.c $(SQLITE3C) $(SQLITE3H)
 	$(LTLINK) $(NO_WARN) -DSCRUB_STANDALONE=1 $(TOP)\ext\misc\scrub.c $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

@@ -1894,6 +1907,10 @@ fuzzcheck.exe:	$(FUZZCHECK_SRC) $(SQLITE3C) $(SQLITE3H)
 fuzzcheck-asan.exe:	$(FUZZCHECK_SRC) $(SQLITE3C) $(SQLITE3H)
 	$(LTLINK) $(NO_WARN) /fsanitize=address $(FUZZCHECK_OPTS) $(FUZZCHECK_SRC) $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

+run-fuzzcheck:	fuzzcheck.exe fuzzcheck-asan.exe
+	fuzzcheck --spinner $(FUZZDB)
+	fuzzcheck-asan --spinner $(FUZZDB)
+
 ossshell.exe:	$(OSSSHELL_SRC) $(SQLITE3C) $(SQLITE3H)
 	$(LTLINK) $(NO_WARN) $(FUZZCHECK_OPTS) $(OSSSHELL_SRC) $(SQLITE3C) /link $(LDFLAGS) $(LTLINKOPTS)

@@ -2299,8 +2316,6 @@ keywordhash.h:	$(TOP)\tool\mkkeywordhash.c mkkeywordhash.exe
 # Source and header files that shell.c depends on
 SHELL_DEP = \
    $(TOP)\src\shell.c.in \
-    $(TOP)\ext\consio\console_io.c \
-    $(TOP)\ext\consio\console_io.h \
    $(TOP)\ext\expert\sqlite3expert.c \
    $(TOP)\ext\expert\sqlite3expert.h \
    $(TOP)\ext\intck\sqlite3intck.c \
@@ -2317,9 +2332,13 @@ SHELL_DEP = \
    $(TOP)\ext\misc\percentile.c \
    $(TOP)\ext\misc\regexp.c \
    $(TOP)\ext\misc\series.c \
+    $(TOP)\ext\misc\sha1.c \
    $(TOP)\ext\misc\shathree.c \
    $(TOP)\ext\misc\sqlar.c \
+    $(TOP)\ext\misc\sqlite3_stdio.c \
+    $(TOP)\ext\misc\sqlite3_stdio.h \
    $(TOP)\ext\misc\uint.c \
+    $(TOP)\ext\misc\vfstrace.c \
    $(TOP)\ext\misc\zipfile.c \
    $(TOP)\ext\recover\dbdata.c \
    $(TOP)\ext\recover\sqlite3recover.c \
@@ -2605,7 +2624,7 @@ smoketest:	$(TESTPROGS)
 shelltest: $(TESTPROGS)
 	.\testfixture.exe $(TOP)\test\permutations.test shell

-sqlite3_analyzer.c:	$(SQLITE3C) $(SQLITE3H) $(TOP)\src\tclsqlite.c $(TOP)\tool\spaceanal.tcl $(TOP)\tool\mkccode.tcl $(TOP)\tool\sqlite3_analyzer.c.in $(TOP)\ext\consio\console_io.h $(TOP)\ext\consio\console_io.c $(SQLITE_TCL_DEP)
+sqlite3_analyzer.c:	$(SQLITE3C) $(SQLITE3H) $(TOP)\src\tclsqlite.c $(TOP)\tool\spaceanal.tcl $(TOP)\tool\mkccode.tcl $(TOP)\tool\sqlite3_analyzer.c.in $(TOP)\ext\misc\sqlite3_stdio.h $(TOP)\ext\misc\sqlite3_stdio.c $(SQLITE_TCL_DEP)
 	$(TCLSH_CMD) $(TOP)\tool\mkccode.tcl $(TOP)\tool\sqlite3_analyzer.c.in > $@

 sqlite3_analyzer.exe:	sqlite3_analyzer.c $(LIBRESOBJS)
@@ -2760,7 +2779,7 @@ clean:
 	del /Q sqlite3.c sqlite3-*.c sqlite3.h 2>NUL
 	del /Q sqlite3rc.h 2>NUL
 	del /Q shell.c sqlite3ext.h sqlite3session.h 2>NUL
-	del /Q sqlite3_analyzer.exe sqlite3_analyzer.c 2>NUL
+	del /Q sqlite3_analyzer.exe sqlite3_analyzer.c sqlite3-rsync.exe 2>NUL
 	del /Q sqlite-*-output.vsix 2>NUL
 	del /Q fuzzershell.exe fuzzcheck.exe sqldiff.exe dbhash.exe 2>NUL
 	del /Q sqltclsh.* 2>NUL
@@ -73,23 +73,26 @@ 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.

-To access sources directly using Fossil, first install Fossil version 2.0 or later.
-Source tarballs and precompiled binaries available
-[here](https://www.fossil-scm.org/home/uv/download.html).  Fossil is
+To access sources directly using [Fossil](https://fossil-scm.org/home),
+first install Fossil version 2.0 or later.
+Source tarballs and precompiled binaries available at
+<https://fossil-scm.org/home/uv/download.html>.  Fossil is
 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 -p ~/sqlite
        cd ~/sqlite
-        fossil clone https://www.sqlite.org/src ~/Fossils/sqlite.fossil
-        fossil open ~/Fossils/sqlite.fossil
+        fossil open https://sqlite.org/src

-After setting up a repository using the steps above, you can do
-bandwidth-efficient updates to the latest version using:
+The "fossil open" command will take two or three minutes.  Afterwards,
+you can do fast, bandwidth-efficient updates to the whatever versions
+of SQLite you like.  Some examples:

-        fossil update trunk   ;# latest trunk check-in
-        fossil update release ;# latest official release
+        fossil update trunk             ;# latest trunk check-in
+        fossil update release           ;# latest official release
+        fossil update trunk:2024-01-01  ;# First trunk check-in after 2024-01-01
+        fossil update version-3.39.0    ;# Version 3.39.0

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

@@ -103,17 +106,19 @@ script found at the root of the source tree.  Then run "make".

 For example:

-        tar xzf sqlite.tar.gz      ;#  Unpack the source tree into "sqlite"
-        mkdir bld                  ;#  Build will occur in a sibling directory
-        cd bld                     ;#  Change to the build directory
-        ../sqlite/configure        ;#  Run the configure script
-        make sqlite3               ;#  Builds the "sqlite3" command-line tool
-        make sqlite3.c             ;#  Build the "amalgamation" source file
-        make devtest               ;#  Run development tests (requires tcl-dev)
-        make releasetest           ;#  Run full release tests (requires tcl-dev)
-        make sqldiff               ;#  Builds the "sqldiff" command-line tool
-        make sqlite3_analyzer      ;#  Builds the "sqlite3_analyzer" tool (requires tcl-dev)
-        make tclextension-install  ;#  Build and install the SQLite TCL extension
+        apt install gcc make tcl-dev  ;#  Make sure you have all the necessary build tools
+        tar xzf sqlite.tar.gz         ;#  Unpack the source tree into "sqlite"
+        mkdir bld                     ;#  Build will occur in a sibling directory
+        cd bld                        ;#  Change to the build directory
+        ../sqlite/configure           ;#  Run the configure script
+        make sqlite3                  ;#  Builds the "sqlite3" command-line tool
+        make sqlite3.c                ;#  Build the "amalgamation" source file
+        make sqldiff                  ;#  Builds the "sqldiff" command-line tool
+        # Makefile targets below this point require tcl-dev
+        make tclextension-install     ;#  Build and install the SQLite TCL extension
+        make devtest                  ;#  Run development tests
+        make releasetest              ;#  Run full release tests
+        make sqlite3_analyzer         ;#  Builds the "sqlite3_analyzer" tool

 See the makefile for additional targets.  For debugging builds, the
 core developers typically run "configure" with options like this:
@@ -124,9 +129,12 @@ For release builds, the core developers usually do:

        ../sqlite/configure --enable-all

-Almost all makefile targets require a "tclsh" TCL interpreter
-version 8.6 or later.  The targets marked with "(requires tcl-dev)" also require
-the TCL development libraries.
+Almost all makefile targets require a "tclsh" TCL interpreter version 8.6 or
+later.  The "tclextension-install" target and the test targets that follow
+all require TCL development libraries too.  ("apt install tcl-dev").  It is
+helpful, but is not required, to install the SQLite TCL extension (the
+"tclextension-install" target) prior to running tests.  The "releasetest"
+target has additional requiremenst, such as "valgrind".

 On "make" command-lines, one can add "OPTIONS=..." to specify additional
 compile-time options over and above those set by ./configure.  For example,
@@ -143,7 +151,7 @@ show what changes are needed.

 ## Compiling for Windows Using MSVC

-On Windows, all applicable build products can be compiled with MSVC.
+On Windows, everything can be compiled with MSVC.
 You will also need a working installation of TCL.
 See the [compile-for-windows.md](doc/compile-for-windows.md) document for
 additional information about how to install MSVC and TCL and configure your
@@ -157,15 +165,21 @@ TCL library, using a command like this:
 SQLite uses "tclsh.exe" as part of the build process, and so that
 program will need to be somewhere on your %PATH%.  SQLite itself
 does not contain any TCL code, but it does use TCL to help with the
-build process and to run tests.
+build process and to run tests.  You may need to install TCL development
+libraries in order to successfully complete some makefile targets.
+It is helpful, but is not required, to install the SQLite TCL extension
+(the "tclextension-install" target) prior to running tests.

 Build using Makefile.msc.  Example:

        nmake /f Makefile.msc sqlite3.exe
        nmake /f Makefile.msc sqlite3.c
+        nmake /f Makefile.msc sqldiff.exe
+        # Makefile targets below this point require TCL development libraries
+        nmake /f Makefile.msc tclextension-install
        nmake /f Makefile.msc devtest
        nmake /f Makefile.msc releasetest
-        nmake /f Makefile.msc tclextension-install
+        nmake /f Makefile.msc sqlite3_analyzer.exe
 
 There are many other makefile targets.  See comments in Makefile.msc for
 details.
@@ -372,7 +386,7 @@ implementation.  It will not be the easiest library in the world to hack.
  *  **VERSION**, **manifest**, and **manifest.uuid** - These files define
     the current SQLite version number.  The "VERSION" file is human generated,
     but the "manifest" and "manifest.uuid" files are automatically generated
-     by the [Fossil version control system](https://fossil-scm/).
+     by the [Fossil version control system](https://fossil-scm.org/).

 There are many other source files.  Each has a succinct header comment that
 describes its purpose and role within the larger system.
@@ -57,11 +57,22 @@ canonical source on a new Windows 11 PC, as of 2023-11-01:
      <ul>
      <li>  `nmake /f makefile.msc`
      <li>  `nmake /f makefile.msc sqlite3.c`
+      <li>  `nmake /f makefile.msc sqlite3.exe`
+      <li>  `nmake /f makefile.msc sqldiff.exe`
+      <li>  `nmake /f makefile.msc tclextension-install`
      <li>  `nmake /f makefile.msc devtest`
      <li>  `nmake /f makefile.msc releasetest`
-      <li>  `nmake /f makefile.msc sqlite3.exe`
+      <li>  `nmake /f makefile.msc sqlite3_analyzer.exe`
      </ul>

+      It is not required that you run the "tclextension-install" target prior to
+      running tests.  However, the tests will run more smoothly if you do.
+      The version of SQLite used for the TCL extension does *not* need to
+      correspond to the version of SQLite under test.  So you can install the
+      SQLite TCL extension once, and then use it to test many different versions
+      of SQLite.
+
+
  7.  For a debugging build of the CLI, where the ".treetrace" and ".wheretrace"
      commands work, add the DEBUG=3 argument to nmake.  Like this:
      <ul>
@@ -655,6 +655,10 @@ cfWrite(const void *buf, size_t osz, size_t ocnt, FILE *pf){
  return rv;
 }

+/* An fgets() equivalent, using Win32 file API for actual input.
+** Input ends when given buffer is filled or a newline is read.
+** If the FILE object is in text mode, swallows 0x0D. (ASCII CR)
+*/
 SQLITE_INTERNAL_LINKAGE char *
 cfGets(char *cBuf, int n, FILE *pf){
  int nci = 0;
@@ -665,7 +669,10 @@ cfGets(char *cBuf, int n, FILE *pf){
  while( nci < n-1 ){
    DWORD nr;
    if( !ReadFile(fai.fh, cBuf+nci, 1, &nr, 0) || nr==0 ) break;
-    if( nr>0 && (!eatCR || cBuf[nci]!='\r') ) nci += nr;
+    if( nr>0 && (!eatCR || cBuf[nci]!='\r') ){
+      nci += nr;
+      if( cBuf[nci-nr]=='\n' ) break;
+    }
  }
  if( nci < n ) cBuf[nci] = 0;
  return (nci>0)? cBuf : 0;
@@ -428,6 +428,8 @@ do_execsql_test 5.0 {

  WITH s(i) AS ( VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<100)
  INSERT INTO t2 SELECT (i-1)/20, (i-1)/5 FROM s;
+
+  CREATE INDEX i1 ON t1( lower(a) );
 }
 do_candidates_test 5.1 {
  SELECT * FROM t1,t2 WHERE (b=? OR a=?) AND (c=? OR d=?)
@@ -457,6 +459,7 @@ do_execsql_test 5.3 {
  ANALYZE;
  SELECT * FROM sqlite_stat1 ORDER BY 1, 2;
 } {
+  t1 i1 {100 50} 
  t1 t1_idx_00000061 {100 50} 
  t1 t1_idx_00000062 {100 20}
  t1 t1_idx_000123a7 {100 50 17}
@@ -491,4 +494,17 @@ USE TEMP B-TREE FOR ORDER BY
 }}
 }

+do_execsql_test 6.0 {
+  CREATE TABLE x1(a, b, c, d);
+  CREATE INDEX x1ab ON x1(a, lower(b));
+  CREATE INDEX x1dcba ON x1(d, b+c, a);
+}
+
+do_candidates_test 6.1 {
+  SELECT * FROM x1 WHERE b=? ORDER BY a;
+} {
+  CREATE INDEX x1_idx_0001267f ON x1(b, a); 
+  CREATE INDEX x1_idx_00000062 ON x1(b);
+}
+
 finish_test
@@ -1623,6 +1623,12 @@ static int idxPopulateOneStat1(
    const char *zComma = zCols==0 ? "" : ", ";
    const char *zName = (const char*)sqlite3_column_text(pIndexXInfo, 0);
    const char *zColl = (const char*)sqlite3_column_text(pIndexXInfo, 1);
+    if( zName==0 ){
+      /* This index contains an expression. Ignore it. */
+      sqlite3_free(zCols);
+      sqlite3_free(zOrder);
+      return sqlite3_reset(pIndexXInfo);
+    }
    zCols = idxAppendText(&rc, zCols, 
        "%sx.%Q IS sqlite_expert_rem(%d, x.%Q) COLLATE %s", 
        zComma, zName, nCol, zName, zColl
@@ -224,6 +224,7 @@ struct Fts5Config {
  int *aPrefix;                   /* Sizes in bytes of nPrefix prefix indexes */
  int eContent;                   /* An FTS5_CONTENT value */
  int bContentlessDelete;         /* "contentless_delete=" option (dflt==0) */
+  int bContentlessUnindexed;      /* "contentless_unindexed=" option (dflt=0) */
  char *zContent;                 /* content table */ 
  char *zContentRowid;            /* "content_rowid=" option value */ 
  int bColumnsize;                /* "columnsize=" option value (dflt==1) */
@@ -262,9 +263,10 @@ struct Fts5Config {
 #define FTS5_CURRENT_VERSION               4
 #define FTS5_CURRENT_VERSION_SECUREDELETE  5

-#define FTS5_CONTENT_NORMAL   0
-#define FTS5_CONTENT_NONE     1
-#define FTS5_CONTENT_EXTERNAL 2
+#define FTS5_CONTENT_NORMAL    0
+#define FTS5_CONTENT_NONE      1
+#define FTS5_CONTENT_EXTERNAL  2
+#define FTS5_CONTENT_UNINDEXED 3

 #define FTS5_DETAIL_FULL      0
 #define FTS5_DETAIL_NONE      1
@@ -636,16 +638,13 @@ Fts5Table *sqlite3Fts5TableFromCsrid(Fts5Global*, i64);

 int sqlite3Fts5FlushToDisk(Fts5Table*);

-int sqlite3Fts5ExtractText(
-  Fts5Config *pConfig,
-  sqlite3_value *pVal,            /* Value to extract text from */
-  int bContent,                   /* Loaded from content table */
-  int *pbResetTokenizer,          /* OUT: True if ClearLocale() required */
-  const char **ppText,            /* OUT: Pointer to text buffer */
-  int *pnText                     /* OUT: Size of (*ppText) in bytes */
-);
-
 void sqlite3Fts5ClearLocale(Fts5Config *pConfig);
+void sqlite3Fts5SetLocale(Fts5Config *pConfig, const char *pLoc, int nLoc);
+
+int sqlite3Fts5IsLocaleValue(Fts5Config *pConfig, sqlite3_value *pVal);
+int sqlite3Fts5DecodeLocaleValue(sqlite3_value *pVal, 
+    const char **ppText, int *pnText, const char **ppLoc, int *pnLoc
+);

 /*
 ** End of interface to code in fts5.c.
@@ -727,7 +726,7 @@ int sqlite3Fts5DropAll(Fts5Config*);
 int sqlite3Fts5CreateTable(Fts5Config*, const char*, const char*, int, char **);

 int sqlite3Fts5StorageDelete(Fts5Storage *p, i64, sqlite3_value**, int);
-int sqlite3Fts5StorageContentInsert(Fts5Storage *p, sqlite3_value**, i64*);
+int sqlite3Fts5StorageContentInsert(Fts5Storage *p, int, sqlite3_value**, i64*);
 int sqlite3Fts5StorageIndexInsert(Fts5Storage *p, sqlite3_value**, i64);

 int sqlite3Fts5StorageIntegrity(Fts5Storage *p, int iArg);
@@ -241,6 +241,7 @@ static int fts5ConfigParseSpecial(
 ){
  int rc = SQLITE_OK;
  int nCmd = (int)strlen(zCmd);
+
  if( sqlite3_strnicmp("prefix", zCmd, nCmd)==0 ){
    const int nByte = sizeof(int) * FTS5_MAX_PREFIX_INDEXES;
    const char *p;
@@ -360,6 +361,16 @@ static int fts5ConfigParseSpecial(
    return rc;
  }

+  if( sqlite3_strnicmp("contentless_unindexed", zCmd, nCmd)==0 ){
+    if( (zArg[0]!='0' && zArg[0]!='1') || zArg[1]!='\0' ){
+      *pzErr = sqlite3_mprintf("malformed contentless_delete=... directive");
+      rc = SQLITE_ERROR;
+    }else{
+      pConfig->bContentlessUnindexed = (zArg[0]=='1');
+    }
+    return rc;
+  }
+
  if( sqlite3_strnicmp("content_rowid", zCmd, nCmd)==0 ){
    if( pConfig->zContentRowid ){
      *pzErr = sqlite3_mprintf("multiple content_rowid=... directives");
@@ -477,7 +488,8 @@ static int fts5ConfigParseColumn(
  Fts5Config *p, 
  char *zCol, 
  char *zArg, 
-  char **pzErr
+  char **pzErr,
+  int *pbUnindexed
 ){
  int rc = SQLITE_OK;
  if( 0==sqlite3_stricmp(zCol, FTS5_RANK_NAME) 
@@ -488,6 +500,7 @@ static int fts5ConfigParseColumn(
  }else if( zArg ){
    if( 0==sqlite3_stricmp(zArg, "unindexed") ){
      p->abUnindexed[p->nCol] = 1;
+      *pbUnindexed = 1;
    }else{
      *pzErr = sqlite3_mprintf("unrecognized column option: %s", zArg);
      rc = SQLITE_ERROR;
@@ -508,11 +521,26 @@ static int fts5ConfigMakeExprlist(Fts5Config *p){

  sqlite3Fts5BufferAppendPrintf(&rc, &buf, "T.%Q", p->zContentRowid);
  if( p->eContent!=FTS5_CONTENT_NONE ){
+    assert( p->eContent==FTS5_CONTENT_EXTERNAL
+         || p->eContent==FTS5_CONTENT_NORMAL
+         || p->eContent==FTS5_CONTENT_UNINDEXED
+    );
    for(i=0; i<p->nCol; i++){
      if( p->eContent==FTS5_CONTENT_EXTERNAL ){
        sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", T.%Q", p->azCol[i]);
-      }else{
+      }else if( p->eContent==FTS5_CONTENT_NORMAL || p->abUnindexed[i] ){
        sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", T.c%d", i);
+      }else{
+        sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", NULL");
+      }
+    }
+  }
+  if( p->eContent==FTS5_CONTENT_NORMAL && p->bLocale ){
+    for(i=0; i<p->nCol; i++){
+      if( p->abUnindexed[i]==0 ){
+        sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", T.l%d", i);
+      }else{
+        sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", NULL");
      }
    }
  }
@@ -546,6 +574,7 @@ int sqlite3Fts5ConfigParse(
  Fts5Config *pRet;               /* New object to return */
  int i;
  sqlite3_int64 nByte;
+  int bUnindexed = 0;             /* True if there are one or more UNINDEXED */

  *ppOut = pRet = (Fts5Config*)sqlite3_malloc(sizeof(Fts5Config));
  if( pRet==0 ) return SQLITE_NOMEM;
@@ -605,7 +634,7 @@ int sqlite3Fts5ConfigParse(
            pzErr
          );
        }else{
-          rc = fts5ConfigParseColumn(pRet, zOne, zTwo, pzErr);
+          rc = fts5ConfigParseColumn(pRet, zOne, zTwo, pzErr, &bUnindexed);
          zOne = 0;
        }
      }
@@ -637,14 +666,30 @@ int sqlite3Fts5ConfigParse(
    rc = SQLITE_ERROR;
  }

+  /* We only allow contentless_unindexed=1 if the table is actually a
+  ** contentless one.
+  */
+  if( rc==SQLITE_OK 
+   && pRet->bContentlessUnindexed 
+   && pRet->eContent!=FTS5_CONTENT_NONE
+  ){
+    *pzErr = sqlite3_mprintf(
+        "contentless_unindexed=1 requires a contentless table"
+    );
+    rc = SQLITE_ERROR;
+  }
+
  /* If no zContent option was specified, fill in the default values. */
  if( rc==SQLITE_OK && pRet->zContent==0 ){
    const char *zTail = 0;
-    assert( pRet->eContent==FTS5_CONTENT_NORMAL 
-         || pRet->eContent==FTS5_CONTENT_NONE 
+    assert( pRet->eContent==FTS5_CONTENT_NORMAL
+         || pRet->eContent==FTS5_CONTENT_NONE
    );
    if( pRet->eContent==FTS5_CONTENT_NORMAL ){
      zTail = "content";
+    }else if( bUnindexed && pRet->bContentlessUnindexed ){
+      pRet->eContent = FTS5_CONTENT_UNINDEXED;
+      zTail = "content";
    }else if( pRet->bColumnsize ){
      zTail = "docsize";
    }
@@ -2185,7 +2185,7 @@ static void fts5SegIterNext_None(

  if( iOff<pIter->iEndofDoclist ){
    /* Next entry is on the current page */
-    i64 iDelta;
+    u64 iDelta;
    iOff += sqlite3Fts5GetVarint(&pIter->pLeaf->p[iOff], (u64*)&iDelta);
    pIter->iLeafOffset = iOff;
    pIter->iRowid += iDelta;
@@ -4889,6 +4889,11 @@ static int fts5IndexFindDeleteMerge(Fts5Index *p, Fts5Structure *pStruct){
          nBest = nPercent;
        }
      }
+
+      /* If pLvl is already the input level to an ongoing merge, look no
+      ** further for a merge candidate. The caller should be allowed to
+      ** continue merging from pLvl first.  */
+      if( pLvl->nMerge ) break;
    }
  }
  return iRet;
@@ -8813,7 +8818,7 @@ static int fts5structConnectMethod(

 /*
 ** We must have a single struct=? constraint that will be passed through
-** into the xFilter method.  If there is no valid stmt=? constraint,
+** into the xFilter method.  If there is no valid struct=? constraint,
 ** then return an SQLITE_CONSTRAINT error.
 */
 static int fts5structBestIndexMethod(
@@ -83,8 +83,17 @@ struct Fts5Global {
  Fts5TokenizerModule *pTok;      /* First in list of all tokenizer modules */
  Fts5TokenizerModule *pDfltTok;  /* Default tokenizer module */
  Fts5Cursor *pCsr;               /* First in list of all open cursors */
+  u32 aLocaleHdr[4];
 };

+/*
+** Size of header on fts5_locale() values. And macro to access a buffer
+** containing a copy of the header from an Fts5Config pointer.
+*/
+#define FTS5_LOCALE_HDR_SIZE ((int)sizeof( ((Fts5Global*)0)->aLocaleHdr ))
+#define FTS5_LOCALE_HDR(pConfig) ((const u8*)(pConfig->pGlobal->aLocaleHdr))
+
+
 /*
 ** Each auxiliary function registered with the FTS5 module is represented
 ** by an object of the following type. All such objects are stored as part
@@ -247,12 +256,6 @@ struct Fts5Cursor {
 #define BitFlagAllTest(x,y) (((x) & (y))==(y))
 #define BitFlagTest(x,y)    (((x) & (y))!=0)

-/*
-** The subtype value and header bytes used by fts5_locale().
-*/
-#define FTS5_LOCALE_SUBTYPE ((unsigned int)'L')
-#define FTS5_LOCALE_HEADER  "\x00\xE0\xB2\xEB"
-

 /*
 ** Macros to Set(), Clear() and Test() cursor flags.
@@ -329,10 +332,16 @@ static void fts5CheckTransactionState(Fts5FullTable *p, int op, int iSavepoint){
 #endif

 /*
-** Return true if pTab is a contentless table.
+** Return true if pTab is a contentless table. If parameter bIncludeUnindexed
+** is true, this includes contentless tables that store UNINDEXED columns
+** only.
 */
-static int fts5IsContentless(Fts5FullTable *pTab){
-  return pTab->p.pConfig->eContent==FTS5_CONTENT_NONE;
+static int fts5IsContentless(Fts5FullTable *pTab, int bIncludeUnindexed){
+  int eContent = pTab->p.pConfig->eContent;
+  return (
+    eContent==FTS5_CONTENT_NONE 
+    || (bIncludeUnindexed && eContent==FTS5_CONTENT_UNINDEXED)
+  );
 }

 /*
@@ -1256,7 +1265,7 @@ static void fts5SetVtabError(Fts5FullTable *p, const char *zFormat, ...){
 ** valid until after the final call to sqlite3Fts5Tokenize() that will use
 ** the locale.
 */
-static void fts5SetLocale(
+static void sqlite3Fts5SetLocale(
  Fts5Config *pConfig, 
  const char *zLocale, 
  int nLocale
@@ -1267,127 +1276,74 @@ static void fts5SetLocale(
 }

 /*
-** Clear any locale configured by an earlier call to fts5SetLocale() or
-** sqlite3Fts5ExtractText().
+** Clear any locale configured by an earlier call to sqlite3Fts5SetLocale().
 */
 void sqlite3Fts5ClearLocale(Fts5Config *pConfig){
-  fts5SetLocale(pConfig, 0, 0);
+  sqlite3Fts5SetLocale(pConfig, 0, 0);
 }

 /*
-** This function is used to extract utf-8 text from an sqlite3_value. This
-** is usually done in order to tokenize it. For example, when:
-**
-**     * a value is written to an fts5 table,
-**     * a value is deleted from an FTS5_CONTENT_NORMAL table,
-**     * a value containing a query expression is passed to xFilter()
-**
-** and so on.
-**
-** This function handles 2 cases:
-**
-**   1) Ordinary values. The text can be extracted from these using
-**      sqlite3_value_text().
-**
-**   2) Combination text/locale blobs created by fts5_locale(). There
-**      are several cases for these:
-**
-**        * Blobs tagged with FTS5_LOCALE_SUBTYPE.
-**        * Blobs read from the content table of a locale=1 external-content
-**          table, and 
-**        * Blobs read from the content table of a locale=1 regular 
-**          content table.
-**
-**      The first two cases above should have the 4 byte FTS5_LOCALE_HEADER
-**      header. It is an error if a blob with the subtype or a blob read
-**      from the content table of an external content table does not have
-**      the required header. A blob read from the content table of a regular
-**      locale=1 table does not have the header. This is to save space.
-**
-** If successful, SQLITE_OK is returned and output parameters (*ppText)
-** and (*pnText) are set to point to a buffer containing the extracted utf-8 
-** text and its length in bytes, respectively. The buffer is not 
-** nul-terminated. It has the same lifetime as the sqlite3_value object
-** from which it is extracted.
-**
-** Parameter bContent must be true if the value was read from an indexed
-** column (i.e. not UNINDEXED) of the on disk content. 
-**
-** If pbResetTokenizer is not NULL and if case (2) is used, then 
-** fts5SetLocale() is called to ensure subsequent sqlite3Fts5Tokenize() calls
-** use the locale. In this case (*pbResetTokenizer) is set to true before
-** returning, to indicate that the caller must call sqlite3Fts5ClearLocale() 
-** to clear the locale after tokenizing the text.
+** Return true if the value passed as the only argument is an 
+** fts5_locale() value.  
 */
-int sqlite3Fts5ExtractText(
-  Fts5Config *pConfig,
-  sqlite3_value *pVal,            /* Value to extract text from */
-  int bContent,                   /* True if indexed table content */
-  int *pbResetTokenizer,          /* OUT: True if xSetLocale(NULL) required */
-  const char **ppText,            /* OUT: Pointer to text buffer */
-  int *pnText                     /* OUT: Size of (*ppText) in bytes */
-){
-  const char *pText = 0;
-  int nText = 0;
-  int rc = SQLITE_OK;
-  int bDecodeBlob = 0;
-
-  assert( pbResetTokenizer==0 || *pbResetTokenizer==0 );
-  assert( bContent==0 || pConfig->eContent!=FTS5_CONTENT_NONE );
-  assert( bContent==0 || sqlite3_value_subtype(pVal)==0 );
-
+int sqlite3Fts5IsLocaleValue(Fts5Config *pConfig, sqlite3_value *pVal){
+  int ret = 0;
  if( sqlite3_value_type(pVal)==SQLITE_BLOB ){
-    if( sqlite3_value_subtype(pVal)==FTS5_LOCALE_SUBTYPE 
-     || (bContent && pConfig->bLocale)
-    ){
-      bDecodeBlob = 1;
-    }
-  }
-
-  if( bDecodeBlob ){
-    const int SZHDR = sizeof(FTS5_LOCALE_HEADER)-1;
+    /* Call sqlite3_value_bytes() after sqlite3_value_blob() in this case.
+    ** If the blob was created using zeroblob(), then sqlite3_value_blob()
+    ** may call malloc(). If this malloc() fails, then the values returned
+    ** by both value_blob() and value_bytes() will be 0. If value_bytes() were 
+    ** called first, then the NULL pointer returned by value_blob() might
+    ** be dereferenced.  */
    const u8 *pBlob = sqlite3_value_blob(pVal);
-    int nBlob = sqlite3_value_bytes(pVal);
-
-    /* Unless this blob was read from the %_content table of an 
-    ** FTS5_CONTENT_NORMAL table, it should have the 4 byte fts5_locale() 
-    ** header. Check for this. If it is not found, return an error.  */
-    if( (!bContent || pConfig->eContent!=FTS5_CONTENT_NORMAL) ){
-      if( nBlob<SZHDR || memcmp(FTS5_LOCALE_HEADER, pBlob, SZHDR) ){
-        rc = SQLITE_ERROR;
-      }else{
-        pBlob += 4;
-        nBlob -= 4;
-      }
+    int nBlob = sqlite3_value_bytes(pVal); 
+    if( nBlob>FTS5_LOCALE_HDR_SIZE
+     && 0==memcmp(pBlob, FTS5_LOCALE_HDR(pConfig), FTS5_LOCALE_HDR_SIZE)
+    ){
+      ret = 1;
    }
-
-    if( rc==SQLITE_OK ){
-      int nLocale = 0;
-
-      for(nLocale=0; nLocale<nBlob; nLocale++){
-        if( pBlob[nLocale]==0x00 ) break;
-      }
-      if( nLocale==nBlob || nLocale==0 ){
-        rc = SQLITE_ERROR;
-      }else{
-        pText = (const char*)&pBlob[nLocale+1];
-        nText = nBlob-nLocale-1;
-
-        if( pbResetTokenizer ){
-          fts5SetLocale(pConfig, (const char*)pBlob, nLocale);
-          *pbResetTokenizer = 1;
-        }
-      }
-    }
-
-  }else{
-    pText = (const char*)sqlite3_value_text(pVal);
-    nText = sqlite3_value_bytes(pVal);
  }
+  return ret;
+}

-  *ppText = pText;
-  *pnText = nText;
-  return rc;
+/*
+** Value pVal is guaranteed to be an fts5_locale() value, according to
+** sqlite3Fts5IsLocaleValue(). This function extracts the text and locale
+** from the value and returns them separately.
+**
+** If successful, SQLITE_OK is returned and (*ppText) and (*ppLoc) set
+** to point to buffers containing the text and locale, as utf-8,
+** respectively. In this case output parameters (*pnText) and (*pnLoc) are
+** set to the sizes in bytes of these two buffers.
+**
+** Or, if an error occurs, then an SQLite error code is returned. The final
+** value of the four output parameters is undefined in this case.
+*/
+int sqlite3Fts5DecodeLocaleValue(
+  sqlite3_value *pVal, 
+  const char **ppText,
+  int *pnText, 
+  const char **ppLoc, 
+  int *pnLoc
+){
+  const char *p = sqlite3_value_blob(pVal);
+  int n = sqlite3_value_bytes(pVal);
+  int nLoc = 0;
+
+  assert( sqlite3_value_type(pVal)==SQLITE_BLOB );
+  assert( n>FTS5_LOCALE_HDR_SIZE );
+
+  for(nLoc=FTS5_LOCALE_HDR_SIZE; p[nLoc]; nLoc++){
+    if( nLoc==(n-1) ){
+      return SQLITE_MISMATCH;
+    }
+  }
+  *ppLoc = &p[FTS5_LOCALE_HDR_SIZE];
+  *pnLoc = nLoc - FTS5_LOCALE_HDR_SIZE;
+
+  *ppText = &p[nLoc+1];
+  *pnText = n - nLoc - 1;
+  return SQLITE_OK;
 }

 /*
@@ -1396,8 +1352,8 @@ int sqlite3Fts5ExtractText(
 ** the text of the expression, and sets output variable (*pzText) to 
 ** point to a nul-terminated buffer containing the expression.
 **
-** If pVal was an fts5_locale() value, then fts5SetLocale() is called to
-** set the tokenizer to use the specified locale.
+** If pVal was an fts5_locale() value, then sqlite3Fts5SetLocale() is called 
+** to set the tokenizer to use the specified locale.
 **
 ** If output variable (*pbFreeAndReset) is set to true, then the caller
 ** is required to (a) call sqlite3Fts5ClearLocale() to reset the tokenizer 
@@ -1409,24 +1365,22 @@ static int fts5ExtractExprText(
  char **pzText,                  /* OUT: nul-terminated buffer of text */
  int *pbFreeAndReset             /* OUT: Free (*pzText) and clear locale */
 ){
-  const char *zText = 0;
-  int nText = 0;
  int rc = SQLITE_OK;
-  int bReset = 0;

-  *pbFreeAndReset = 0;
-  rc = sqlite3Fts5ExtractText(pConfig, pVal, 0, &bReset, &zText, &nText);
-  if( rc==SQLITE_OK ){
-    if( bReset ){
-      *pzText = sqlite3Fts5Mprintf(&rc, "%.*s", nText, zText);
-      if( rc!=SQLITE_OK ){
-        sqlite3Fts5ClearLocale(pConfig);
-      }else{
-        *pbFreeAndReset = 1;
-      }
-    }else{
-      *pzText = (char*)zText;
+  if( sqlite3Fts5IsLocaleValue(pConfig, pVal) ){
+    const char *pText = 0;
+    int nText = 0;
+    const char *pLoc = 0;
+    int nLoc = 0;
+    rc = sqlite3Fts5DecodeLocaleValue(pVal, &pText, &nText, &pLoc, &nLoc);
+    *pzText = sqlite3Fts5Mprintf(&rc, "%.*s", nText, pText);
+    if( rc==SQLITE_OK ){
+      sqlite3Fts5SetLocale(pConfig, pLoc, nLoc);
    }
+    *pbFreeAndReset = 1;
+  }else{
+    *pzText = (char*)sqlite3_value_text(pVal);
+    *pbFreeAndReset = 0;
  }

  return rc;
@@ -1778,7 +1732,7 @@ static int fts5SpecialInsert(
    }
    bLoadConfig = 1;
  }else if( 0==sqlite3_stricmp("rebuild", zCmd) ){
-    if( pConfig->eContent==FTS5_CONTENT_NONE ){
+    if( fts5IsContentless(pTab, 1) ){
      fts5SetVtabError(pTab, 
          "'rebuild' may not be used with a contentless fts5 table"
      );
@@ -1847,7 +1801,7 @@ static void fts5StorageInsert(
 ){
  int rc = *pRc;
  if( rc==SQLITE_OK ){
-    rc = sqlite3Fts5StorageContentInsert(pTab->pStorage, apVal, piRowid);
+    rc = sqlite3Fts5StorageContentInsert(pTab->pStorage, 0, apVal, piRowid);
  }
  if( rc==SQLITE_OK ){
    rc = sqlite3Fts5StorageIndexInsert(pTab->pStorage, apVal, *piRowid);
@@ -1855,6 +1809,67 @@ static void fts5StorageInsert(
  *pRc = rc;
 }

+/*
+**
+** This function is called when the user attempts an UPDATE on a contentless
+** table. Parameter bRowidModified is true if the UPDATE statement modifies
+** the rowid value. Parameter apVal[] contains the new values for each user
+** defined column of the fts5 table. pConfig is the configuration object of the
+** table being updated (guaranteed to be contentless). The contentless_delete=1
+** and contentless_unindexed=1 options may or may not be set. 
+**
+** This function returns SQLITE_OK if the UPDATE can go ahead, or an SQLite
+** error code if it cannot. In this case an error message is also loaded into
+** pConfig. Output parameter (*pbContent) is set to true if the caller should
+** update the %_content table only - not the FTS index or any other shadow
+** table. This occurs when an UPDATE modifies only UNINDEXED columns of the
+** table.
+**
+** An UPDATE may proceed if:
+**
+**   * The only columns modified are UNINDEXED columns, or
+**
+**   * The contentless_delete=1 option was specified and all of the indexed
+**     columns (not a subset) have been modified.
+*/
+static int fts5ContentlessUpdate(
+  Fts5Config *pConfig,
+  sqlite3_value **apVal,
+  int bRowidModified,
+  int *pbContent
+){
+  int ii;
+  int bSeenIndex = 0;             /* Have seen modified indexed column */
+  int bSeenIndexNC = 0;           /* Have seen unmodified indexed column */
+  int rc = SQLITE_OK;
+
+  for(ii=0; ii<pConfig->nCol; ii++){
+    if( pConfig->abUnindexed[ii]==0 ){
+      if( sqlite3_value_nochange(apVal[ii]) ){
+        bSeenIndexNC++;
+      }else{
+        bSeenIndex++;
+      }
+    }
+  }
+
+  if( bSeenIndex==0 && bRowidModified==0 ){
+    *pbContent = 1;
+  }else{
+    if( bSeenIndexNC || pConfig->bContentlessDelete==0 ){
+      rc = SQLITE_ERROR;
+      sqlite3Fts5ConfigErrmsg(pConfig, 
+          (pConfig->bContentlessDelete ?
+          "%s a subset of columns on fts5 contentless-delete table: %s" :
+          "%s contentless fts5 table: %s")
+          , "cannot UPDATE", pConfig->zName
+      );
+    }
+  }
+
+  return rc;
+}
+
 /* 
 ** This function is the implementation of the xUpdate callback used by 
 ** FTS3 virtual tables. It is invoked by SQLite each time a row is to be
@@ -1941,44 +1956,34 @@ static int fts5UpdateMethod(
    assert( eType0==SQLITE_INTEGER || eType0==SQLITE_NULL );
    assert( nArg!=1 || eType0==SQLITE_INTEGER );

-    /* Filter out attempts to run UPDATE or DELETE on contentless tables.
-    ** This is not suported. Except - they are both supported if the CREATE
-    ** VIRTUAL TABLE statement contained "contentless_delete=1". */
-    if( eType0==SQLITE_INTEGER 
-     && pConfig->eContent==FTS5_CONTENT_NONE 
-     && pConfig->bContentlessDelete==0
-    ){
-      pTab->p.base.zErrMsg = sqlite3_mprintf(
-          "cannot %s contentless fts5 table: %s", 
-          (nArg>1 ? "UPDATE" : "DELETE from"), pConfig->zName
-      );
-      rc = SQLITE_ERROR;
-    }
-
    /* DELETE */
-    else if( nArg==1 ){
-      i64 iDel = sqlite3_value_int64(apVal[0]);  /* Rowid to delete */
-      rc = sqlite3Fts5StorageDelete(pTab->pStorage, iDel, 0, 0);
-      bUpdateOrDelete = 1;
+    if( nArg==1 ){
+      /* It is only possible to DELETE from a contentless table if the
+      ** contentless_delete=1 flag is set. */
+      if( fts5IsContentless(pTab, 1) && pConfig->bContentlessDelete==0 ){
+        fts5SetVtabError(pTab, 
+            "cannot DELETE from contentless fts5 table: %s", pConfig->zName
+        );
+        rc = SQLITE_ERROR;
+      }else{
+        i64 iDel = sqlite3_value_int64(apVal[0]);  /* Rowid to delete */
+        rc = sqlite3Fts5StorageDelete(pTab->pStorage, iDel, 0, 0);
+        bUpdateOrDelete = 1;
+      }
    }

    /* INSERT or UPDATE */
    else{
      int eType1 = sqlite3_value_numeric_type(apVal[1]);

-      /* Ensure that no fts5_locale() values are written to locale=0 tables.
-      ** And that no blobs except fts5_locale() blobs are written to indexed
-      ** (i.e. not UNINDEXED) columns of locale=1 tables. */
-      int ii;
-      for(ii=0; ii<pConfig->nCol; ii++){
-        if( sqlite3_value_type(apVal[ii+2])==SQLITE_BLOB ){
-          int bSub = (sqlite3_value_subtype(apVal[ii+2])==FTS5_LOCALE_SUBTYPE);
-          if( (pConfig->bLocale && !bSub && pConfig->abUnindexed[ii]==0) 
-           || (pConfig->bLocale==0 && bSub)
-          ){
-            if( pConfig->bLocale==0 ){
-              fts5SetVtabError(pTab, "fts5_locale() requires locale=1");
-            }
+      /* It is an error to write an fts5_locale() value to a table without
+      ** the locale=1 option. */
+      if( pConfig->bLocale==0 ){
+        int ii;
+        for(ii=0; ii<pConfig->nCol; ii++){
+          sqlite3_value *pVal = apVal[ii+2];
+          if( sqlite3Fts5IsLocaleValue(pConfig, pVal) ){
+            fts5SetVtabError(pTab, "fts5_locale() requires locale=1");
            rc = SQLITE_MISMATCH;
            goto update_out;
          }
@@ -1998,35 +2003,55 @@ static int fts5UpdateMethod(

      /* UPDATE */
      else{
+        Fts5Storage *pStorage = pTab->pStorage;
        i64 iOld = sqlite3_value_int64(apVal[0]);  /* Old rowid */
        i64 iNew = sqlite3_value_int64(apVal[1]);  /* New rowid */
+        int bContent = 0;         /* Content only update */
+
+        /* If this is a contentless table (including contentless_unindexed=1
+        ** tables), check if the UPDATE may proceed.  */
+        if( fts5IsContentless(pTab, 1) ){
+          rc = fts5ContentlessUpdate(pConfig, &apVal[2], iOld!=iNew, &bContent);
+          if( rc!=SQLITE_OK ) goto update_out;
+        }
+
        if( eType1!=SQLITE_INTEGER ){
          rc = SQLITE_MISMATCH;
        }else if( iOld!=iNew ){
+          assert( bContent==0 );
          if( eConflict==SQLITE_REPLACE ){
-            rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0, 1);
+            rc = sqlite3Fts5StorageDelete(pStorage, iOld, 0, 1);
            if( rc==SQLITE_OK ){
-              rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew, 0, 0);
+              rc = sqlite3Fts5StorageDelete(pStorage, iNew, 0, 0);
            }
            fts5StorageInsert(&rc, pTab, apVal, pRowid);
          }else{
-            rc = sqlite3Fts5StorageFindDeleteRow(pTab->pStorage, iOld);
+            rc = sqlite3Fts5StorageFindDeleteRow(pStorage, iOld);
            if( rc==SQLITE_OK ){
-              rc = sqlite3Fts5StorageContentInsert(pTab->pStorage,apVal,pRowid);
+              rc = sqlite3Fts5StorageContentInsert(pStorage, 0, apVal, pRowid);
            }
            if( rc==SQLITE_OK ){
-              rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0, 1);
+              rc = sqlite3Fts5StorageDelete(pStorage, iOld, 0, 0);
            }
            if( rc==SQLITE_OK ){
-              rc = sqlite3Fts5StorageIndexInsert(pTab->pStorage, apVal,*pRowid);
+              rc = sqlite3Fts5StorageIndexInsert(pStorage, apVal, *pRowid);
            }
          }
+        }else if( bContent ){
+          /* This occurs when an UPDATE on a contentless table affects *only*
+          ** UNINDEXED columns. This is a no-op for contentless_unindexed=0
+          ** tables, or a write to the %_content table only for =1 tables.  */
+          assert( fts5IsContentless(pTab, 1) );
+          rc = sqlite3Fts5StorageFindDeleteRow(pStorage, iOld);
+          if( rc==SQLITE_OK ){
+            rc = sqlite3Fts5StorageContentInsert(pStorage, 1, apVal, pRowid);
+          }
        }else{
-          rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld, 0, 1);
+          rc = sqlite3Fts5StorageDelete(pStorage, iOld, 0, 1);
          fts5StorageInsert(&rc, pTab, apVal, pRowid);
        }
        bUpdateOrDelete = 1;
-        sqlite3Fts5StorageReleaseDeleteRow(pTab->pStorage);
+        sqlite3Fts5StorageReleaseDeleteRow(pStorage);
      }

    }
@@ -2139,11 +2164,11 @@ static int fts5ApiTokenize_v2(
  Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab);
  int rc = SQLITE_OK;

-  fts5SetLocale(pTab->pConfig, pLoc, nLoc);
+  sqlite3Fts5SetLocale(pTab->pConfig, pLoc, nLoc);
  rc = sqlite3Fts5Tokenize(pTab->pConfig, 
      FTS5_TOKENIZE_AUX, pText, nText, pUserData, xToken
  );
-  fts5SetLocale(pTab->pConfig, 0, 0);
+  sqlite3Fts5SetLocale(pTab->pConfig, 0, 0);

  return rc;
 }
@@ -2171,6 +2196,49 @@ static int fts5ApiPhraseSize(Fts5Context *pCtx, int iPhrase){
  return sqlite3Fts5ExprPhraseSize(pCsr->pExpr, iPhrase);
 }

+/*
+** Argument pStmt is an SQL statement of the type used by Fts5Cursor. This
+** function extracts the text value of column iCol of the current row.
+** Additionally, if there is an associated locale, it invokes
+** sqlite3Fts5SetLocale() to configure the tokenizer. In all cases the caller
+** should invoke sqlite3Fts5ClearLocale() to clear the locale at some point
+** after this function returns.
+**
+** If successful, (*ppText) is set to point to a buffer containing the text
+** value as utf-8 and SQLITE_OK returned. (*pnText) is set to the size of that
+** buffer in bytes. It is not guaranteed to be nul-terminated. If an error
+** occurs, an SQLite error code is returned. The final values of the two
+** output parameters are undefined in this case.
+*/
+static int fts5TextFromStmt(
+  Fts5Config *pConfig,
+  sqlite3_stmt *pStmt,
+  int iCol,
+  const char **ppText,
+  int *pnText
+){
+  sqlite3_value *pVal = sqlite3_column_value(pStmt, iCol+1);
+  const char *pLoc = 0;
+  int nLoc = 0;
+  int rc = SQLITE_OK;
+
+  if( pConfig->bLocale 
+   && pConfig->eContent==FTS5_CONTENT_EXTERNAL
+   && sqlite3Fts5IsLocaleValue(pConfig, pVal) 
+  ){
+    rc = sqlite3Fts5DecodeLocaleValue(pVal, ppText, pnText, &pLoc, &nLoc);
+  }else{
+    *ppText = (const char*)sqlite3_value_text(pVal);
+    *pnText = sqlite3_value_bytes(pVal);
+    if( pConfig->bLocale && pConfig->eContent==FTS5_CONTENT_NORMAL ){
+      pLoc = (const char*)sqlite3_column_text(pStmt, iCol+1+pConfig->nCol);
+      nLoc = sqlite3_column_bytes(pStmt, iCol+1+pConfig->nCol);
+    }
+  }
+  sqlite3Fts5SetLocale(pConfig, pLoc, nLoc);
+  return rc;
+}
+
 static int fts5ApiColumnText(
  Fts5Context *pCtx, 
  int iCol, 
@@ -2184,16 +2252,14 @@ static int fts5ApiColumnText(
  assert( pCsr->ePlan!=FTS5_PLAN_SPECIAL );
  if( iCol<0 || iCol>=pTab->pConfig->nCol ){
    rc = SQLITE_RANGE;
-  }else if( fts5IsContentless((Fts5FullTable*)(pCsr->base.pVtab)) ){
+  }else if( fts5IsContentless((Fts5FullTable*)(pCsr->base.pVtab), 0) ){
    *pz = 0;
    *pn = 0;
  }else{
    rc = fts5SeekCursor(pCsr, 0);
    if( rc==SQLITE_OK ){
-      Fts5Config *pConfig = pTab->pConfig;
-      int bContent = (pConfig->abUnindexed[iCol]==0);
-      sqlite3_value *pVal = sqlite3_column_value(pCsr->pStmt, iCol+1);
-      sqlite3Fts5ExtractText(pConfig, pVal, bContent, 0, pz, pn);
+      rc = fts5TextFromStmt(pTab->pConfig, pCsr->pStmt, iCol, pz, pn);
+      sqlite3Fts5ClearLocale(pTab->pConfig);
    }
  }
  return rc;
@@ -2219,7 +2285,7 @@ static int fts5CsrPoslist(
  if( iPhrase<0 || iPhrase>=sqlite3Fts5ExprPhraseCount(pCsr->pExpr) ){
    rc = SQLITE_RANGE;
  }else if( pConfig->eDetail!=FTS5_DETAIL_FULL 
-         && pConfig->eContent==FTS5_CONTENT_NONE 
+         && fts5IsContentless((Fts5FullTable*)pCsr->base.pVtab, 1)
  ){
    *pa = 0;
    *pn = 0;
@@ -2235,17 +2301,15 @@ static int fts5CsrPoslist(
        rc = fts5SeekCursor(pCsr, 0);
      }
      for(i=0; i<pConfig->nCol && rc==SQLITE_OK; i++){
-        sqlite3_value *pVal = sqlite3_column_value(pCsr->pStmt, i+1);
        const char *z = 0;
        int n = 0; 
-        int bReset = 0;
-        rc = sqlite3Fts5ExtractText(pConfig, pVal, 1, &bReset, &z, &n);
+        rc = fts5TextFromStmt(pConfig, pCsr->pStmt, i, &z, &n);
        if( rc==SQLITE_OK ){
          rc = sqlite3Fts5ExprPopulatePoslists(
              pConfig, pCsr->pExpr, aPopulator, i, z, n
          );
        }
-        if( bReset ) sqlite3Fts5ClearLocale(pConfig);
+        sqlite3Fts5ClearLocale(pConfig);
      }
      sqlite3_free(aPopulator);

@@ -2417,7 +2481,7 @@ static int fts5ApiColumnSize(Fts5Context *pCtx, int iCol, int *pnToken){
    if( pConfig->bColumnsize ){
      i64 iRowid = fts5CursorRowid(pCsr);
      rc = sqlite3Fts5StorageDocsize(pTab->pStorage, iRowid, pCsr->aColumnSize);
-    }else if( pConfig->zContent==0 ){
+    }else if( !pConfig->zContent || pConfig->eContent==FTS5_CONTENT_UNINDEXED ){
      int i;
      for(i=0; i<pConfig->nCol; i++){
        if( pConfig->abUnindexed[i]==0 ){
@@ -2431,17 +2495,14 @@ static int fts5ApiColumnSize(Fts5Context *pCtx, int iCol, int *pnToken){
        if( pConfig->abUnindexed[i]==0 ){
          const char *z = 0; 
          int n = 0;
-          int bReset = 0;
-          sqlite3_value *pVal = sqlite3_column_value(pCsr->pStmt, i+1);
-
          pCsr->aColumnSize[i] = 0;
-          rc = sqlite3Fts5ExtractText(pConfig, pVal, 1, &bReset, &z, &n);
+          rc = fts5TextFromStmt(pConfig, pCsr->pStmt, i, &z, &n);
          if( rc==SQLITE_OK ){
            rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_AUX, 
                z, n, (void*)&pCsr->aColumnSize[i], fts5ColumnSizeCb
            );
-            if( bReset ) sqlite3Fts5ClearLocale(pConfig);
          }
+          sqlite3Fts5ClearLocale(pConfig);
        }
      }
    }
@@ -2708,42 +2769,19 @@ static int fts5ApiColumnLocale(
    rc = SQLITE_RANGE;
  }else if(
      pConfig->abUnindexed[iCol]==0
-   && pConfig->eContent!=FTS5_CONTENT_NONE
+   && 0==fts5IsContentless((Fts5FullTable*)pCsr->base.pVtab, 1)
   && pConfig->bLocale
  ){
    rc = fts5SeekCursor(pCsr, 0);
    if( rc==SQLITE_OK ){
-      /* Load the value into pVal. pVal is a locale/text pair iff:
-      **
-      **   1) It is an SQLITE_BLOB, and
-      **   2) Either the subtype is FTS5_LOCALE_SUBTYPE, or else the
-      **      value was loaded from an FTS5_CONTENT_NORMAL table, and
-      **   3) It does not begin with an 0x00 byte.
-      */ 
-      sqlite3_value *pVal = sqlite3_column_value(pCsr->pStmt, iCol+1);
-      if( sqlite3_value_type(pVal)==SQLITE_BLOB ){
-        const u8 *pBlob = (const u8*)sqlite3_value_blob(pVal);
-        int nBlob = sqlite3_value_bytes(pVal);
-        if( pConfig->eContent==FTS5_CONTENT_EXTERNAL ){
-          const int SZHDR = sizeof(FTS5_LOCALE_HEADER)-1;
-          if( nBlob<SZHDR || memcmp(FTS5_LOCALE_HEADER, pBlob, SZHDR) ){
-            rc = SQLITE_ERROR;
-          }
-          pBlob += 4;
-          nBlob -= 4;
-        }
-        if( rc==SQLITE_OK ){
-          int nLocale = 0;
-          for(nLocale=0; nLocale<nBlob && pBlob[nLocale]!=0x00; nLocale++);
-          if( nLocale==nBlob || nLocale==0 ){
-            rc = SQLITE_ERROR;
-          }else{
-            /* A locale/text pair */
-            *pzLocale = (const char*)pBlob;
-            *pnLocale = nLocale;
-          }
-        }
+      const char *zDummy = 0;
+      int nDummy = 0;
+      rc = fts5TextFromStmt(pConfig, pCsr->pStmt, iCol, &zDummy, &nDummy);
+      if( rc==SQLITE_OK ){
+        *pzLocale = pConfig->t.pLocale;
+        *pnLocale = pConfig->t.nLocale;
      }
+      sqlite3Fts5ClearLocale(pConfig);
    }
  }

@@ -2964,57 +3002,6 @@ static int fts5PoslistBlob(sqlite3_context *pCtx, Fts5Cursor *pCsr){
  return rc;
 }

-/*
-** Value pVal was read from column iCol of the FTS5 table. This function
-** returns it to the owner of pCtx via a call to an sqlite3_result_xxx()
-** function. This function deals with the same cases as 
-** sqlite3Fts5ExtractText():
-**
-**   1) Ordinary values. These can be returned using sqlite3_result_value().
-**
-**   2) Blobs from fts5_locale(). The text is extracted from these and 
-**      returned via sqlite3_result_text(). The locale is discarded.
-*/
-static void fts5ExtractValueFromColumn(
-  sqlite3_context *pCtx,
-  Fts5Config *pConfig, 
-  int iCol,
-  sqlite3_value *pVal
-){
-  assert( pConfig->eContent!=FTS5_CONTENT_NONE );
-
-  if( pConfig->bLocale 
-   && sqlite3_value_type(pVal)==SQLITE_BLOB 
-   && pConfig->abUnindexed[iCol]==0
-  ){
-    const int SZHDR = sizeof(FTS5_LOCALE_HEADER)-1;
-    const u8 *pBlob = sqlite3_value_blob(pVal);
-    int nBlob = sqlite3_value_bytes(pVal);
-    int ii;
-
-    if( pConfig->eContent==FTS5_CONTENT_EXTERNAL ){
-      if( nBlob<SZHDR || memcmp(pBlob, FTS5_LOCALE_HEADER, SZHDR) ){
-        sqlite3_result_error_code(pCtx, SQLITE_ERROR);
-        return;
-      }else{
-        pBlob += 4;
-        nBlob -= 4;
-      }
-    }
-
-    for(ii=0; ii<nBlob && pBlob[ii]; ii++);
-    if( ii==0 || ii==nBlob ){
-      sqlite3_result_error_code(pCtx, SQLITE_ERROR);
-    }else{
-      const char *pText = (const char*)&pBlob[ii+1];
-      sqlite3_result_text(pCtx, pText, nBlob-ii-1, SQLITE_TRANSIENT);
-    }
-    return;
-  }
-
-  sqlite3_result_value(pCtx, pVal);
-}
-
 /* 
 ** This is the xColumn method, called by SQLite to request a value from
 ** the row that the supplied cursor currently points to.
@@ -3057,22 +3044,27 @@ static int fts5ColumnMethod(
      }
    }
  }else{
-    /* A column created by the user containing values. */
-    int bNochange = sqlite3_vtab_nochange(pCtx);
-
-    if( fts5IsContentless(pTab) ){
-      if( bNochange && pConfig->bContentlessDelete ){
-        fts5ResultError(pCtx, "cannot UPDATE a subset of "
-            "columns on fts5 contentless-delete table: %s", pConfig->zName
-        );
-      }
-    }else if( bNochange==0 || pConfig->eContent!=FTS5_CONTENT_NORMAL ){
+    if( !sqlite3_vtab_nochange(pCtx) && pConfig->eContent!=FTS5_CONTENT_NONE ){
      pConfig->pzErrmsg = &pTab->p.base.zErrMsg;
      rc = fts5SeekCursor(pCsr, 1);
      if( rc==SQLITE_OK ){
        sqlite3_value *pVal = sqlite3_column_value(pCsr->pStmt, iCol+1);
-        fts5ExtractValueFromColumn(pCtx, pConfig, iCol, pVal);
+        if( pConfig->bLocale 
+         && pConfig->eContent==FTS5_CONTENT_EXTERNAL 
+         && sqlite3Fts5IsLocaleValue(pConfig, pVal)
+        ){
+          const char *z = 0;
+          int n = 0;
+          rc = fts5TextFromStmt(pConfig, pCsr->pStmt, iCol, &z, &n);
+          if( rc==SQLITE_OK ){
+            sqlite3_result_text(pCtx, z, n, SQLITE_TRANSIENT);
+          }
+          sqlite3Fts5ClearLocale(pConfig);
+        }else{
+          sqlite3_result_value(pCtx, pVal);
+        }
      }
+
      pConfig->pzErrmsg = 0;
    }
  }
@@ -3634,13 +3626,12 @@ static void fts5LocaleFunc(
  if( zLocale==0 || zLocale[0]=='\0' ){
    sqlite3_result_text(pCtx, zText, nText, SQLITE_TRANSIENT);
  }else{
+    Fts5Global *p = (Fts5Global*)sqlite3_user_data(pCtx);
    u8 *pBlob = 0;
    u8 *pCsr = 0;
    int nBlob = 0;
-    const int nHdr = 4;
-    assert( sizeof(FTS5_LOCALE_HEADER)==nHdr+1 );

-    nBlob = nHdr + nLocale + 1 + nText;
+    nBlob = FTS5_LOCALE_HDR_SIZE + nLocale + 1 + nText;
    pBlob = (u8*)sqlite3_malloc(nBlob);
    if( pBlob==0 ){
      sqlite3_result_error_nomem(pCtx);
@@ -3648,8 +3639,8 @@ static void fts5LocaleFunc(
    }

    pCsr = pBlob;
-    memcpy(pCsr, FTS5_LOCALE_HEADER, nHdr);
-    pCsr += nHdr;
+    memcpy(pCsr, (const u8*)p->aLocaleHdr, FTS5_LOCALE_HDR_SIZE);
+    pCsr += FTS5_LOCALE_HDR_SIZE;
    memcpy(pCsr, zLocale, nLocale);
    pCsr += nLocale;
    (*pCsr++) = 0x00;
@@ -3657,7 +3648,6 @@ static void fts5LocaleFunc(
    assert( &pCsr[nText]==&pBlob[nBlob] );

    sqlite3_result_blob(pCtx, pBlob, nBlob, sqlite3_free);
-    sqlite3_result_subtype(pCtx, FTS5_LOCALE_SUBTYPE);
  }
 }

@@ -3759,6 +3749,16 @@ static int fts5Init(sqlite3 *db){
    pGlobal->api.xFindTokenizer = fts5FindTokenizer;
    pGlobal->api.xCreateTokenizer_v2 = fts5CreateTokenizer_v2;
    pGlobal->api.xFindTokenizer_v2 = fts5FindTokenizer_v2;
+
+    /* Initialize pGlobal->aLocaleHdr[] to a 128-bit pseudo-random vector.
+    ** The constants below were generated randomly.  */
+    sqlite3_randomness(sizeof(pGlobal->aLocaleHdr), pGlobal->aLocaleHdr);
+    pGlobal->aLocaleHdr[0] ^= 0xF924976D;
+    pGlobal->aLocaleHdr[1] ^= 0x16596E13;
+    pGlobal->aLocaleHdr[2] ^= 0x7C80BEAA;
+    pGlobal->aLocaleHdr[3] ^= 0x9B03A67F;
+    assert( sizeof(pGlobal->aLocaleHdr)==16 );
+
    rc = sqlite3_create_module_v2(db, "fts5", &fts5Mod, p, fts5ModuleDestroy);
    if( rc==SQLITE_OK ) rc = sqlite3Fts5IndexInit(db);
    if( rc==SQLITE_OK ) rc = sqlite3Fts5ExprInit(pGlobal, db);
@@ -143,20 +143,35 @@ static int fts5StorageGetStmt(

      case FTS5_STMT_INSERT_CONTENT: 
      case FTS5_STMT_REPLACE_CONTENT: {
-        int nCol = pC->nCol + 1;
-        char *zBind;
+        char *zBind = 0;
        int i;

-        zBind = sqlite3_malloc64(1 + nCol*2);
-        if( zBind ){
-          for(i=0; i<nCol; i++){
-            zBind[i*2] = '?';
-            zBind[i*2 + 1] = ',';
+        assert( pC->eContent==FTS5_CONTENT_NORMAL 
+             || pC->eContent==FTS5_CONTENT_UNINDEXED 
+        );
+
+        /* Add bindings for the "c*" columns - those that store the actual
+        ** table content. If eContent==NORMAL, then there is one binding
+        ** for each column. Or, if eContent==UNINDEXED, then there are only
+        ** bindings for the UNINDEXED columns. */
+        for(i=0; rc==SQLITE_OK && i<(pC->nCol+1); i++){
+          if( !i || pC->eContent==FTS5_CONTENT_NORMAL || pC->abUnindexed[i-1] ){
+            zBind = sqlite3Fts5Mprintf(&rc, "%z%s?%d", zBind, zBind?",":"",i+1);
          }
-          zBind[i*2-1] = '\0';
-          zSql = sqlite3_mprintf(azStmt[eStmt], pC->zDb, pC->zName, zBind);
-          sqlite3_free(zBind);
        }
+
+        /* Add bindings for any "l*" columns. Only non-UNINDEXED columns
+        ** require these.  */
+        if( pC->bLocale && pC->eContent==FTS5_CONTENT_NORMAL ){
+          for(i=0; rc==SQLITE_OK && i<pC->nCol; i++){
+            if( pC->abUnindexed[i]==0 ){
+              zBind = sqlite3Fts5Mprintf(&rc, "%z,?%d", zBind, pC->nCol+i+2);
+            }
+          }
+        }
+
+        zSql = sqlite3Fts5Mprintf(&rc, azStmt[eStmt], pC->zDb, pC->zName,zBind);
+        sqlite3_free(zBind);
        break;
      }

@@ -342,9 +357,11 @@ int sqlite3Fts5StorageOpen(
  p->pIndex = pIndex;

  if( bCreate ){
-    if( pConfig->eContent==FTS5_CONTENT_NORMAL ){
+    if( pConfig->eContent==FTS5_CONTENT_NORMAL 
+     || pConfig->eContent==FTS5_CONTENT_UNINDEXED 
+    ){
      int nDefn = 32 + pConfig->nCol*10;
-      char *zDefn = sqlite3_malloc64(32 + (sqlite3_int64)pConfig->nCol * 10);
+      char *zDefn = sqlite3_malloc64(32 + (sqlite3_int64)pConfig->nCol * 20);
      if( zDefn==0 ){
        rc = SQLITE_NOMEM;
      }else{
@@ -353,8 +370,20 @@ int sqlite3Fts5StorageOpen(
        sqlite3_snprintf(nDefn, zDefn, "id INTEGER PRIMARY KEY");
        iOff = (int)strlen(zDefn);
        for(i=0; i<pConfig->nCol; i++){
-          sqlite3_snprintf(nDefn-iOff, &zDefn[iOff], ", c%d", i);
-          iOff += (int)strlen(&zDefn[iOff]);
+          if( pConfig->eContent==FTS5_CONTENT_NORMAL 
+           || pConfig->abUnindexed[i] 
+          ){
+            sqlite3_snprintf(nDefn-iOff, &zDefn[iOff], ", c%d", i);
+            iOff += (int)strlen(&zDefn[iOff]);
+          }
+        }
+        if( pConfig->bLocale ){
+          for(i=0; i<pConfig->nCol; i++){
+            if( pConfig->abUnindexed[i]==0 ){
+              sqlite3_snprintf(nDefn-iOff, &zDefn[iOff], ", l%d", i);
+              iOff += (int)strlen(&zDefn[iOff]);
+            }
+          }
        }
        rc = sqlite3Fts5CreateTable(pConfig, "content", zDefn, 0, pzErr);
      }
@@ -507,7 +536,8 @@ static int fts5StorageDeleteFromIndex(
      sqlite3_value *pVal = 0;
      const char *pText = 0;
      int nText = 0;
-      int bReset = 0;
+      const char *pLoc = 0;
+      int nLoc = 0;

      assert( pSeek==0 || apVal==0 );
      assert( pSeek!=0 || apVal!=0 );
@@ -517,10 +547,19 @@ static int fts5StorageDeleteFromIndex(
        pVal = apVal[iCol-1];
      }

-      rc = sqlite3Fts5ExtractText(
-          pConfig, pVal, pSeek!=0, &bReset, &pText, &nText
-      );
+      if( pConfig->bLocale && sqlite3Fts5IsLocaleValue(pConfig, pVal) ){
+        rc = sqlite3Fts5DecodeLocaleValue(pVal, &pText, &nText, &pLoc, &nLoc);
+      }else{
+        pText = (const char*)sqlite3_value_text(pVal);
+        nText = sqlite3_value_bytes(pVal);
+        if( pConfig->bLocale && pSeek ){
+          pLoc = (const char*)sqlite3_column_text(pSeek, iCol + pConfig->nCol);
+          nLoc = sqlite3_column_bytes(pSeek, iCol + pConfig->nCol);
+        }
+      }
+
      if( rc==SQLITE_OK ){
+        sqlite3Fts5SetLocale(pConfig, pLoc, nLoc);
        ctx.szCol = 0;
        rc = sqlite3Fts5Tokenize(pConfig, FTS5_TOKENIZE_DOCUMENT, 
            pText, nText, (void*)&ctx, fts5StorageInsertCallback
@@ -529,7 +568,7 @@ static int fts5StorageDeleteFromIndex(
        if( rc==SQLITE_OK && p->aTotalSize[iCol-1]<0 ){
          rc = FTS5_CORRUPT;
        }
-        if( bReset ) sqlite3Fts5ClearLocale(pConfig);
+        sqlite3Fts5ClearLocale(pConfig);
      }
    }
  }
@@ -574,7 +613,9 @@ static int fts5StorageContentlessDelete(Fts5Storage *p, i64 iDel){
  int rc = SQLITE_OK;

  assert( p->pConfig->bContentlessDelete );
-  assert( p->pConfig->eContent==FTS5_CONTENT_NONE );
+  assert( p->pConfig->eContent==FTS5_CONTENT_NONE
+       || p->pConfig->eContent==FTS5_CONTENT_UNINDEXED
+  );

  /* Look up the origin of the document in the %_docsize table. Store
  ** this in stack variable iOrigin.  */
@@ -698,6 +739,12 @@ int sqlite3Fts5StorageDelete(
  if( rc==SQLITE_OK ){
    if( p->pConfig->bContentlessDelete ){
      rc = fts5StorageContentlessDelete(p, iDel);
+      if( rc==SQLITE_OK 
+       && bSaveRow 
+       && p->pConfig->eContent==FTS5_CONTENT_UNINDEXED
+      ){
+        rc = sqlite3Fts5StorageFindDeleteRow(p, iDel);
+      }
    }else{
      rc = fts5StorageDeleteFromIndex(p, iDel, apVal, bSaveRow);
    }
@@ -714,7 +761,9 @@ int sqlite3Fts5StorageDelete(
  }

  /* Delete the %_content record */
-  if( pConfig->eContent==FTS5_CONTENT_NORMAL ){
+  if( pConfig->eContent==FTS5_CONTENT_NORMAL 
+   || pConfig->eContent==FTS5_CONTENT_UNINDEXED 
+  ){
    if( rc==SQLITE_OK ){
      rc = fts5StorageGetStmt(p, FTS5_STMT_DELETE_CONTENT, &pDel, 0);
    }
@@ -746,8 +795,13 @@ int sqlite3Fts5StorageDeleteAll(Fts5Storage *p){
  );
  if( rc==SQLITE_OK && pConfig->bColumnsize ){
    rc = fts5ExecPrintf(pConfig->db, 0,
-        "DELETE FROM %Q.'%q_docsize';",
-        pConfig->zDb, pConfig->zName
+        "DELETE FROM %Q.'%q_docsize';", pConfig->zDb, pConfig->zName
+    );
+  }
+
+  if( rc==SQLITE_OK && pConfig->eContent==FTS5_CONTENT_UNINDEXED ){
+    rc = fts5ExecPrintf(pConfig->db, 0,
+        "DELETE FROM %Q.'%q_content';", pConfig->zDb, pConfig->zName
    );
  }

@@ -788,20 +842,35 @@ int sqlite3Fts5StorageRebuild(Fts5Storage *p){
    for(ctx.iCol=0; rc==SQLITE_OK && ctx.iCol<pConfig->nCol; ctx.iCol++){
      ctx.szCol = 0;
      if( pConfig->abUnindexed[ctx.iCol]==0 ){
-        int bReset = 0;           /* True if tokenizer locale must be reset */
        int nText = 0;            /* Size of pText in bytes */
        const char *pText = 0;    /* Pointer to buffer containing text value */
-        sqlite3_value *pVal = sqlite3_column_value(pScan, ctx.iCol+1);
+        int nLoc = 0;             /* Size of pLoc in bytes */
+        const char *pLoc = 0;     /* Pointer to buffer containing text value */
+
+        sqlite3_value *pVal = sqlite3_column_value(pScan, ctx.iCol+1);
+        if( pConfig->eContent==FTS5_CONTENT_EXTERNAL
+         && sqlite3Fts5IsLocaleValue(pConfig, pVal)
+        ){
+          rc = sqlite3Fts5DecodeLocaleValue(pVal, &pText, &nText, &pLoc, &nLoc);
+        }else{
+          pText = (const char*)sqlite3_value_text(pVal);
+          nText = sqlite3_value_bytes(pVal);
+          if( pConfig->bLocale ){
+            int iCol = ctx.iCol + 1 + pConfig->nCol;
+            pLoc = (const char*)sqlite3_column_text(pScan, iCol);
+            nLoc = sqlite3_column_bytes(pScan, iCol);
+          }
+        }

-        rc = sqlite3Fts5ExtractText(pConfig, pVal, 1, &bReset, &pText, &nText);
        if( rc==SQLITE_OK ){
+          sqlite3Fts5SetLocale(pConfig, pLoc, nLoc);
          rc = sqlite3Fts5Tokenize(pConfig, 
              FTS5_TOKENIZE_DOCUMENT,
              pText, nText,
              (void*)&ctx,
              fts5StorageInsertCallback
          );
-          if( bReset ) sqlite3Fts5ClearLocale(pConfig);
+          sqlite3Fts5ClearLocale(pConfig);
        }
      }
      sqlite3Fts5BufferAppendVarint(&rc, &buf, ctx.szCol);
@@ -868,6 +937,7 @@ static int fts5StorageNewRowid(Fts5Storage *p, i64 *piRowid){
 */
 int sqlite3Fts5StorageContentInsert(
  Fts5Storage *p, 
+  int bReplace,                   /* True to use REPLACE instead of INSERT */
  sqlite3_value **apVal, 
  i64 *piRowid
 ){
@@ -875,7 +945,9 @@ int sqlite3Fts5StorageContentInsert(
  int rc = SQLITE_OK;

  /* Insert the new row into the %_content table. */
-  if( pConfig->eContent!=FTS5_CONTENT_NORMAL ){
+  if( pConfig->eContent!=FTS5_CONTENT_NORMAL 
+   && pConfig->eContent!=FTS5_CONTENT_UNINDEXED
+  ){
    if( sqlite3_value_type(apVal[1])==SQLITE_INTEGER ){
      *piRowid = sqlite3_value_int64(apVal[1]);
    }else{
@@ -884,33 +956,52 @@ int sqlite3Fts5StorageContentInsert(
  }else{
    sqlite3_stmt *pInsert = 0;    /* Statement to write %_content table */
    int i;                        /* Counter variable */
-    rc = fts5StorageGetStmt(p, FTS5_STMT_INSERT_CONTENT, &pInsert, 0);
-    for(i=1; rc==SQLITE_OK && i<=pConfig->nCol+1; i++){
-      sqlite3_value *pVal = apVal[i];
-      if( sqlite3_value_nochange(pVal) && p->pSavedRow ){
-        /* This is an UPDATE statement, and column (i-2) was not modified.
-        ** Retrieve the value from Fts5Storage.pSavedRow instead. */
-        pVal = sqlite3_column_value(p->pSavedRow, i-1);
-      }else if( sqlite3_value_subtype(pVal)==FTS5_LOCALE_SUBTYPE ){
-        assert( pConfig->bLocale );
-        assert( i>1 );
-        if( pConfig->abUnindexed[i-2] ){
-          /* At attempt to insert an fts5_locale() value into an UNINDEXED
-          ** column. Strip the locale away and just bind the text.  */
-          const char *pText = 0;
-          int nText = 0;
-          rc = sqlite3Fts5ExtractText(pConfig, pVal, 0, 0, &pText, &nText);
-          sqlite3_bind_text(pInsert, i, pText, nText, SQLITE_TRANSIENT);
-        }else{
-          const u8 *pBlob = (const u8*)sqlite3_value_blob(pVal);
-          int nBlob = sqlite3_value_bytes(pVal);
-          assert( nBlob>4 );
-          sqlite3_bind_blob(pInsert, i, pBlob+4, nBlob-4, SQLITE_TRANSIENT);
-        }
-        continue;
-      }

-      rc = sqlite3_bind_value(pInsert, i, pVal);
+    assert( FTS5_STMT_INSERT_CONTENT+1==FTS5_STMT_REPLACE_CONTENT );
+    assert( bReplace==0 || bReplace==1 );
+    rc = fts5StorageGetStmt(p, FTS5_STMT_INSERT_CONTENT+bReplace, &pInsert, 0);
+    if( pInsert ) sqlite3_clear_bindings(pInsert);
+
+    /* Bind the rowid value */
+    sqlite3_bind_value(pInsert, 1, apVal[1]);
+
+    /* Loop through values for user-defined columns. i=2 is the leftmost
+    ** user-defined column. As is column 1 of pSavedRow.  */
+    for(i=2; rc==SQLITE_OK && i<=pConfig->nCol+1; i++){
+      int bUnindexed = pConfig->abUnindexed[i-2];
+      if( pConfig->eContent==FTS5_CONTENT_NORMAL || bUnindexed ){
+        sqlite3_value *pVal = apVal[i];
+
+        if( sqlite3_value_nochange(pVal) && p->pSavedRow ){
+          /* This is an UPDATE statement, and user-defined column (i-2) was not
+          ** modified.  Retrieve the value from Fts5Storage.pSavedRow.  */
+          pVal = sqlite3_column_value(p->pSavedRow, i-1);
+          if( pConfig->bLocale && bUnindexed==0 ){
+            sqlite3_bind_value(pInsert, pConfig->nCol + i,
+                sqlite3_column_value(p->pSavedRow, pConfig->nCol + i - 1)
+            );
+          }
+        }else if( sqlite3Fts5IsLocaleValue(pConfig, pVal) ){
+          const char *pText = 0;
+          const char *pLoc = 0;
+          int nText = 0;
+          int nLoc = 0;
+          assert( pConfig->bLocale );
+
+          rc = sqlite3Fts5DecodeLocaleValue(pVal, &pText, &nText, &pLoc, &nLoc);
+          if( rc==SQLITE_OK ){
+            sqlite3_bind_text(pInsert, i, pText, nText, SQLITE_TRANSIENT);
+            if( bUnindexed==0 ){
+              int iLoc = pConfig->nCol + i;
+              sqlite3_bind_text(pInsert, iLoc, pLoc, nLoc, SQLITE_TRANSIENT);
+            }
+          }
+
+          continue;
+        }
+
+        rc = sqlite3_bind_value(pInsert, i, pVal);
+      }
    }
    if( rc==SQLITE_OK ){
      sqlite3_step(pInsert);
@@ -945,23 +1036,37 @@ int sqlite3Fts5StorageIndexInsert(
  for(ctx.iCol=0; rc==SQLITE_OK && ctx.iCol<pConfig->nCol; ctx.iCol++){
    ctx.szCol = 0;
    if( pConfig->abUnindexed[ctx.iCol]==0 ){
-      int bReset = 0;             /* True if tokenizer locale must be reset */
      int nText = 0;              /* Size of pText in bytes */
      const char *pText = 0;      /* Pointer to buffer containing text value */
+      int nLoc = 0;               /* Size of pText in bytes */
+      const char *pLoc = 0;       /* Pointer to buffer containing text value */
+
      sqlite3_value *pVal = apVal[ctx.iCol+2];
-      int bDisk = 0;
      if( p->pSavedRow && sqlite3_value_nochange(pVal) ){
        pVal = sqlite3_column_value(p->pSavedRow, ctx.iCol+1);
-        bDisk = 1;
+        if( pConfig->eContent==FTS5_CONTENT_NORMAL && pConfig->bLocale ){
+          int iCol = ctx.iCol + 1 + pConfig->nCol;
+          pLoc = (const char*)sqlite3_column_text(p->pSavedRow, iCol);
+          nLoc = sqlite3_column_bytes(p->pSavedRow, iCol);
+        }
+      }else{
+        pVal = apVal[ctx.iCol+2];
      }
-      rc = sqlite3Fts5ExtractText(pConfig, pVal, bDisk, &bReset, &pText,&nText);
+
+      if( pConfig->bLocale && sqlite3Fts5IsLocaleValue(pConfig, pVal) ){
+        rc = sqlite3Fts5DecodeLocaleValue(pVal, &pText, &nText, &pLoc, &nLoc);
+      }else{
+        pText = (const char*)sqlite3_value_text(pVal);
+        nText = sqlite3_value_bytes(pVal);
+      }
+
      if( rc==SQLITE_OK ){
-        assert( bReset==0 || pConfig->bLocale );
+        sqlite3Fts5SetLocale(pConfig, pLoc, nLoc);
        rc = sqlite3Fts5Tokenize(pConfig, 
            FTS5_TOKENIZE_DOCUMENT, pText, nText, (void*)&ctx,
            fts5StorageInsertCallback
        );
-        if( bReset ) sqlite3Fts5ClearLocale(pConfig);
+        sqlite3Fts5ClearLocale(pConfig);
      }
    }
    sqlite3Fts5BufferAppendVarint(&rc, &buf, ctx.szCol);
@@ -1126,37 +1231,61 @@ int sqlite3Fts5StorageIntegrity(Fts5Storage *p, int iArg){
          rc = sqlite3Fts5TermsetNew(&ctx.pTermset);
        }
        for(i=0; rc==SQLITE_OK && i<pConfig->nCol; i++){
-          if( pConfig->abUnindexed[i] ) continue;
-          ctx.iCol = i;
-          ctx.szCol = 0;
-          if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){
-            rc = sqlite3Fts5TermsetNew(&ctx.pTermset);
-          }
-          if( rc==SQLITE_OK ){
-            int bReset = 0;        /* True if tokenizer locale must be reset */
-            int nText = 0;         /* Size of pText in bytes */
-            const char *pText = 0; /* Pointer to buffer containing text value */
+          if( pConfig->abUnindexed[i]==0 ){
+            const char *pText = 0;
+            int nText = 0;
+            const char *pLoc = 0;
+            int nLoc = 0;
+            sqlite3_value *pVal = sqlite3_column_value(pScan, i+1);
+
+            if( pConfig->eContent==FTS5_CONTENT_EXTERNAL 
+             && sqlite3Fts5IsLocaleValue(pConfig, pVal)
+            ){
+              rc = sqlite3Fts5DecodeLocaleValue(
+                  pVal, &pText, &nText, &pLoc, &nLoc
+              );
+            }else{
+              if( pConfig->eContent==FTS5_CONTENT_NORMAL && pConfig->bLocale ){
+                int iCol = i + 1 + pConfig->nCol;
+                pLoc = (const char*)sqlite3_column_text(pScan, iCol);
+                nLoc = sqlite3_column_bytes(pScan, iCol);
+              }
+              pText = (const char*)sqlite3_value_text(pVal);
+              nText = sqlite3_value_bytes(pVal);
+            }
+
+            ctx.iCol = i;
+            ctx.szCol = 0;
+
+            if( rc==SQLITE_OK && pConfig->eDetail==FTS5_DETAIL_COLUMNS ){
+              rc = sqlite3Fts5TermsetNew(&ctx.pTermset);
+            }

-            rc = sqlite3Fts5ExtractText(pConfig, 
-                sqlite3_column_value(pScan, i+1), 1, &bReset, &pText, &nText
-            );
            if( rc==SQLITE_OK ){
+              sqlite3Fts5SetLocale(pConfig, pLoc, nLoc);
              rc = sqlite3Fts5Tokenize(pConfig, 
                  FTS5_TOKENIZE_DOCUMENT,
                  pText, nText,
                  (void*)&ctx,
                  fts5StorageIntegrityCallback
              );
-              if( bReset ) sqlite3Fts5ClearLocale(pConfig);
+              sqlite3Fts5ClearLocale(pConfig);
+            }
+
+            /* If this is not a columnsize=0 database, check that the number
+            ** of tokens in the value matches the aColSize[] value read from
+            ** the %_docsize table.  */
+            if( rc==SQLITE_OK 
+             && pConfig->bColumnsize 
+             && ctx.szCol!=aColSize[i] 
+            ){
+              rc = FTS5_CORRUPT;
+            }
+            aTotalSize[i] += ctx.szCol;
+            if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){
+              sqlite3Fts5TermsetFree(ctx.pTermset);
+              ctx.pTermset = 0;
            }
-          }
-          if( rc==SQLITE_OK && pConfig->bColumnsize && ctx.szCol!=aColSize[i] ){
-            rc = FTS5_CORRUPT;
-          }
-          aTotalSize[i] += ctx.szCol;
-          if( pConfig->eDetail==FTS5_DETAIL_COLUMNS ){
-            sqlite3Fts5TermsetFree(ctx.pTermset);
-            ctx.pTermset = 0;
          }
        }
        sqlite3Fts5TermsetFree(ctx.pTermset);
@@ -103,13 +103,13 @@ do_execsql_test 3.0 {

 do_catchsql_test 3.1 {
  INSERT INTO x1(rowid, a, b) VALUES(113, 'hello world', X'123456');
-} {1 {datatype mismatch}}
+} {0 {}}
 do_catchsql_test 3.2 {
  INSERT INTO x2(rowid, a, b) VALUES(113, 'hello world', X'123456');
-} {1 {datatype mismatch}}
+} {0 {}}
 do_catchsql_test 3.3 {
  INSERT INTO x3(rowid, a, b) VALUES(113, 'hello world', X'123456');
-} {1 {datatype mismatch}}
+} {0 {}}


 #--------------------------------------------------------------------------
@@ -35,8 +35,8 @@ do_execsql_test 1.01 {
 }

 # explain_i "UPDATE t1 SET a='a' WHERE t1.rowid=1"    
-breakpoint
-explain_i "UPDATE t1 SET a='a' FROM t2 WHERE t1.rowid=1 AND b IS NULL"     
+#breakpoint
+#explain_i "UPDATE t1 SET a='a' FROM t2 WHERE t1.rowid=1 AND b IS NULL"     

 #breakpoint
 #explain_i "UPDATE t1 SET a='a' WHERE b IS NULL AND rowid=?"
@@ -56,4 +56,56 @@ foreach {tn up err} {
  do_catchsql_test 1.$tn $up $res($err)
 }

+#-------------------------------------------------------------------------
+reset_db
+
+proc random {n} { expr {abs(int(rand()*$n))} }
+proc select_one {list} {
+  set n [llength $list]
+  lindex $list [random $n]
+}
+proc vocab {} {
+  list abc def ghi jkl mno pqr stu vwx yza
+}
+proc term {} {
+  select_one [vocab]
+}
+proc document {} {
+  set nTerm [expr [random 3] + 7]
+  set doc ""
+  for {set ii 0} {$ii < $nTerm} {incr ii} {
+    lappend doc [term]
+  }
+  set doc
+}
+db func document document
+
+do_execsql_test 2.0 {
+  CREATE VIRTUAL TABLE ft USING fts5(a, contentless_delete=1, content='');
+  INSERT INTO ft(ft, rank) VALUES('pgsz', 64);
+}
+
+do_test 2.1 {
+  for {set ii 1} {$ii < 12} {incr ii} {
+    db transaction {
+      for {set jj 0} {$jj < 10} {incr jj} {
+        set doc [document]
+        execsql { INSERT INTO ft VALUES($doc); }
+      }
+    }
+  }
+} {}
+
+do_test 2.2 {
+  foreach r [db eval {SELECT rowid FROM ft}] {
+    execsql { DELETE FROM ft WHERE rowid=$r }
+  }
+} {}
+
+set doc [document]
+do_execsql_test 2.3 {
+  INSERT INTO ft VALUES($doc)
+}
+
+
 finish_test
@@ -113,5 +113,58 @@ do_execsql_test 3.4 {
  INSERT INTO tx(tx) VALUES('integrity-check');
 }

+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 4.0 {
+  CREATE VIRTUAL TABLE ft1 USING fts5(a, b UNINDEXED, 
+      content='', contentless_unindexed=1
+  );
+  CREATE VIRTUAL TABLE ft2 USING fts5(a, b UNINDEXED, 
+      content='', contentless_unindexed=1, contentless_delete=1
+  );
+
+  INSERT INTO ft1(rowid, a, b) VALUES(1, 'one', 'i');
+  INSERT INTO ft1(rowid, a, b) VALUES(2, 'two', 'ii');
+  INSERT INTO ft1(rowid, a, b) VALUES(3, 'three', 'iii');
+  INSERT INTO ft2(rowid, a, b) VALUES(1, 'one', 'i');
+  INSERT INTO ft2(rowid, a, b) VALUES(2, 'two', 'ii');
+  INSERT INTO ft2(rowid, a, b) VALUES(3, 'three', 'iii');
+}
+
+do_catchsql_test 4.1 {
+  DELETE FROM ft1 WHERE rowid=2
+} {1 {cannot DELETE from contentless fts5 table: ft1}}
+do_catchsql_test 4.2 {
+  DELETE FROM ft2 WHERE rowid=2
+} {0 {}}
+
+do_catchsql_test 4.3 {
+  INSERT INTO ft1(ft1, rowid, a) VALUES('delete', 2, 'two');
+} {0 {}}
+do_catchsql_test 4.2 {
+  INSERT INTO ft2(ft2, rowid, a) VALUES('delete', 2, 'two');
+} {1 {'delete' may not be used with a contentless_delete=1 table}}
+
+do_execsql_test 4.3 {
+  SELECT rowid, * FROM ft1;
+} {
+  1 {} i
+  3 {} iii
+}
+do_execsql_test 4.4 {
+  SELECT rowid, * FROM ft2;
+} {
+  1 {} i
+  3 {} iii
+}
+
+do_execsql_test 4.5 {
+  SELECT * FROM ft1_content
+} {1 i 3 iii}
+
+do_execsql_test 4.6 {
+  SELECT * FROM ft2_content
+} {1 i 3 iii}
+
 finish_test

@@ -246,7 +246,7 @@ do_execsql_test 10.1 {
 } {hello}

 faultsim_save_and_close
-do_faultsim_test 10 -faults oom* -prep {
+do_faultsim_test 10.1 -faults oom* -prep {
  faultsim_restore_and_reopen
 } -body {
  execsql {
@@ -256,6 +256,18 @@ do_faultsim_test 10 -faults oom* -prep {
  faultsim_test_result {0 hello}
 }

+breakpoint
+faultsim_save_and_close
+do_faultsim_test 10.2 -faults oom-t* -prep {
+  faultsim_restore_and_reopen
+} -body {
+  execsql {
+    INSERT INTO ft VALUES(zeroblob(10000));
+  }
+} -test {
+  faultsim_test_result {0 {}}
+}
+
 #-------------------------------------------------------------------------
 reset_db

@@ -0,0 +1,56 @@
+# 2024 September 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 the integrity-check procedure.
+#
+
+source [file join [file dirname [info script]] fts5_common.tcl]
+set testprefix fts5integrity2
+
+# If SQLITE_ENABLE_FTS5 is not defined, omit this file.
+ifcapable !fts5 {
+  finish_test
+  return
+}
+
+do_execsql_test 2.0 {
+  CREATE VIRTUAL TABLE t2 USING fts5(a, detail='none');
+  BEGIN;
+    INSERT INTO t2(rowid, a) VALUES(-1, 'hello world');
+    INSERT INTO t2(rowid, a) VALUES(9223372036854775807, 'hello world');
+  COMMIT;
+}
+
+do_execsql_test 2.1 {
+  SELECT rowid FROM t2('hello AND world');
+} {-1 9223372036854775807}
+
+#-------------------------------------------------------------------------
+do_execsql_test 2.0 {
+  CREATE VIRTUAL TABLE t1 USING fts5(a, detail='none');
+  CREATE TABLE r1(r);
+  
+  WITH c(x) AS (VALUES(1) UNION SELECT x<<1 FROM c)
+    INSERT INTO r1(r) SELECT -1-x FROM c;
+
+  INSERT INTO t1(rowid, a) SELECT r, 'abc' FROM r1;
+}
+
+do_execsql_test 2.1 {
+  PRAGMA integrity_check;
+} {ok}
+
+do_execsql_test 2.2 {
+  SELECT rowid FROM t1('abc') ORDER BY +rowid;
+} [db eval {SELECT r FROM r1 ORDER BY r}]
+
+
+finish_test
@@ -73,6 +73,7 @@ do_execsql_test 1.2 {
  SELECT rowid, a FROM t1( fts5_locale('reverse', 'abc') );
 } {2 cba}

+
 #-------------------------------------------------------------------------
 # Test that the locale= option exists and seems to accept values. And
 # that fts5_locale() values may only be inserted into an internal-content
@@ -99,8 +100,11 @@ do_catchsql_test 2.3 {
  INSERT INTO b1(b1, rank) VALUES('locale', 0);
 } {1 {SQL logic error}}

-do_execsql_test 2.4 {
+do_execsql_test 2.4.1 {
  INSERT INTO b1 VALUES('abc', 'one two three');
+}
+
+do_execsql_test 2.4.2 {
  INSERT INTO b1 VALUES('def', fts5_locale('reverse', 'four five six'));
 }

@@ -131,6 +135,7 @@ do_execsql_test 2.12  { SELECT quote(y) FROM b1('ruof') } {
 do_execsql_test 2.13 {
  INSERT INTO b1(b1) VALUES('integrity-check');
 }
+
 do_execsql_test 2.14 {
  INSERT INTO b1(b1) VALUES('rebuild');
 }
@@ -149,7 +154,6 @@ do_execsql_test 2.18 {
  INSERT INTO b1(rowid, x, y) VALUES(
      test_setsubtype(45, 76), 'abc def', 'def abc'
  );
-  INSERT INTO b1(b1) VALUES('integrity-check');
 }

 #-------------------------------------------------------------------------
@@ -278,9 +282,9 @@ do_execsql_test 5.2 {
 }

 do_execsql_test 5.3 {
-  SELECT typeof(c0), typeof(c1) FROM t1_content
+  SELECT typeof(c0), typeof(c1), typeof(l0) FROM t1_content
 } {
-  blob text
+  text text text
 }

 #-------------------------------------------------------------------------
@@ -305,37 +309,37 @@ foreach {tn opt} {

  fts5_aux_test_functions db

-  do_execsql_test 5.$tn.3 {
+  do_execsql_test 6.$tn.3 {
    SELECT fts5_test_columnsize(y1) FROM y1
  } {
    2 3 2 4
  }

-  do_execsql_test 5.$tn.4 {
+  do_execsql_test 6.$tn.4 {
    SELECT rowid, fts5_test_columnsize(y1) FROM y1('shall');
  } {
    2 3
  }

-  do_execsql_test 5.$tn.5 {
+  do_execsql_test 6.$tn.5 {
    SELECT rowid, fts5_test_columnsize(y1) FROM y1('shall');
  } {
    2 3
  }

-  do_execsql_test 5.$tn.6 {
+  do_execsql_test 6.$tn.6 {
    SELECT rowid, fts5_test_columnsize(y1) FROM y1('have');
  } {
    4 4
  }

-  do_execsql_test 5.$tn.7 {
+  do_execsql_test 6.$tn.7 {
    SELECT rowid, highlight(y1, 0, '[', ']') FROM y1('have');
  } {
    4 {which it hath been used to [have]}
  }

-  do_execsql_test 5.$tn.8 {
+  do_execsql_test 6.$tn.8 {
    SELECT rowid, 
           highlight(y1, 0, '[', ']'),
           snippet(y1, 0, '[', ']', '...', 10)
@@ -473,7 +477,7 @@ foreach_detail_mode $::testprefix {
  }
  
  foreach {tn v} {
-    1   X'001122'
+    1   X'001152'
    2   X'0011223344'
    3   X'00E0B2EB68656c6c6f'
    4   X'00E0B2EB0068656c6c6f'
@@ -484,33 +488,33 @@ foreach_detail_mode $::testprefix {
  
    do_catchsql_test 10.2.$tn.3 {
      INSERT INTO ft(ft) VALUES('rebuild');
-    } {1 {SQL logic error}}
+    } {0 {}}
  
    do_catchsql_test 10.2.$tn.4 "
      SELECT * FROM ft( test_setsubtype($v, 76) );
-    " {1 {SQL logic error}}
+    " {1 {fts5: syntax error near ""}}
  
    do_execsql_test 10.2.$tn.5 {
      INSERT INTO ft(rowid, x) VALUES(1, 'hello world');
    }
  
-    if {"%DETAIL%"!="full"} {
-      do_catchsql_test 10.2.$tn.6 {
+    if {"%DETAIL%"=="full"} {
+      do_execsql_test 10.2.$tn.6 {
        SELECT fts5_test_poslist(ft) FROM ft('world');
-      } {1 SQLITE_ERROR}
+      } {0.0.1}
  
-      do_catchsql_test 10.2.$tn.7 {
+      do_execsql_test 10.2.$tn.7.1 {
        SELECT fts5_test_columnsize(ft) FROM ft('world');
-      } {1 SQLITE_ERROR}
+      } {1}

-      do_catchsql_test 10.2.$tn.7 {
+      do_execsql_test 10.2.$tn.7.2 {
        SELECT fts5_test_columnlocale(ft) FROM ft('world');
-      } {1 SQLITE_ERROR}
+      } {{{}}}
    }

    do_catchsql_test 10.2.$tn.8 {
-      SELECT * FROM ft('hello')
-    } {1 {SQL logic error}}
+      SELECT count(*) FROM ft('hello')
+    } {0 1}

    do_catchsql_test 10.2.$tn.9 {
      PRAGMA integrity_check;
@@ -523,11 +527,11 @@ foreach_detail_mode $::testprefix {

    do_catchsql_test 10.2.$tn.11 "
      INSERT INTO ft(ft, rowid, x) VALUES('delete', 1, test_setsubtype($v,76) )
-    " {1 {SQL logic error}}
+    " {0 {}}

    do_catchsql_test 10.2.$tn.12 "
      INSERT INTO ft(rowid, x) VALUES(2, test_setsubtype($v,76) )
-    " {1 {SQL logic error}}
+    " {0 {}}

    do_execsql_test 10.2.$tn.13 {
      INSERT INTO ft2(rowid, x) VALUES(1, 'hello world');
@@ -536,7 +540,7 @@ foreach_detail_mode $::testprefix {

    do_catchsql_test 10.2.$tn.15 {
      PRAGMA integrity_check;
-    } {1 {SQL logic error}}
+    } {0 {{malformed inverted index for FTS5 table main.ft2}}}

    do_execsql_test 10.2.$tn.16 {
      DELETE FROM ft2_content;
@@ -663,5 +667,82 @@ do_catchsql_test 13.2.7 {
  FROM ft('one AND three') ORDER BY rowid
 } {1 {non-integer argument passed to function fts5_get_locale()}}

+#-------------------------------------------------------------------------
+# Check that UPDATE statements that may affect more than one row work.
+#
+reset_db
+do_execsql_test 14.1 {
+  CREATE VIRTUAL TABLE ft USING fts5(a, b, locale=1);
+}
+
+do_execsql_test 14.2 {
+  INSERT INTO ft VALUES('hello', 'world');
+}
+
+do_execsql_test 14.3 {
+  UPDATE ft SET b = fts5_locale('en_AU', 'world');
+}
+
+do_execsql_test 14.4 {
+  INSERT INTO ft VALUES(X'abcd', X'1234');
+} {}
+
+do_execsql_test 14.5 {
+  SELECT quote(a), quote(b) FROM ft
+} {'hello' 'world' X'ABCD' X'1234'}
+
+do_execsql_test 14.6 {
+  DELETE FROM ft;
+  INSERT INTO ft VALUES(NULL, 'null');
+  INSERT INTO ft VALUES(123, 'int');
+  INSERT INTO ft VALUES(345.0, 'real');
+  INSERT INTO ft VALUES('abc', 'text');
+  INSERT INTO ft VALUES(fts5_locale('abc', 'def'), 'text');
+
+  SELECT a, typeof(a), b FROM ft
+} {
+  {} null null
+  123 integer int
+  345.0 real real
+  abc text text
+  def text text
+}
+
+do_execsql_test 14.7 {
+  SELECT quote(c0), typeof(c0) FROM ft_content
+} {
+  NULL null
+  123 integer
+  345.0 real
+  'abc' text
+  'def' text
+}
+
+#-------------------------------------------------------------------------
+# Check that inserting UNINDEXED columns between indexed columns of a
+# locale=1 table does not cause a problem.
+#
+reset_db
+sqlite3_fts5_create_tokenizer -v2 db tcl tcl_create
+fts5_aux_test_functions db
+
+do_execsql_test 15.1 {
+  CREATE VIRTUAL TABLE ft USING fts5(a, b UNINDEXED, c, locale=1, tokenize=tcl);
+}
+
+do_execsql_test 15.2 {
+  INSERT INTO ft VALUES('one', 'two', 'three');
+  INSERT INTO ft VALUES('one', 'two', fts5_locale('loc', 'three'));
+}
+
+do_execsql_test 15.3 {
+  SELECT c2, l2 FROM ft_content
+} {three {} three loc}
+
+do_execsql_test 15.4 {
+  SELECT c, fts5_columnlocale(ft, 2) FROM ft
+} {three {} three loc}
+
+
 finish_test

@@ -93,15 +93,21 @@ foreach {tn cols tokens} {
  10 {b}      "i e"
  11 {a}      "i e"
 } {
-  set fts   "{$cols}:[join $tokens +]"
  set where [list]
  foreach c $cols { lappend where "pmatch($c, '$tokens')" }
  set where [join $where " OR "]

-  set res [db eval "SELECT rowid FROM t3 WHERE $where"]
-  do_execsql_test "1.$tn.$fts->([llength $res] rows)" { 
-    SELECT rowid FROM t3($fts) 
-  } $res
+  foreach fts [list \
+      "{$cols}:[join $tokens +]"       \
+      "{$cols}:NEAR([join $tokens +])" \
+      "{$cols}:NEAR([join $tokens +],1)" \
+      "{$cols}:NEAR([join $tokens +],111)" \
+  ] {
+    set res [db eval "SELECT rowid FROM t3 WHERE $where"]
+    do_execsql_test "1.$tn.$fts->([llength $res] rows)" { 
+      SELECT rowid FROM t3($fts) 
+    } $res
+  }
 }

 do_execsql_test 2.0 {
@@ -0,0 +1,297 @@
+# 2024 Sep 13
+#
+# 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.
+#
+#***********************************************************************
+#
+# The tests in this file focus on "unindexed" columns in contentless 
+# tables.
+#
+
+source [file join [file dirname [info script]] fts5_common.tcl]
+set testprefix fts5unindexed2
+
+# If SQLITE_ENABLE_FTS5 is not defined, omit this file.
+ifcapable !fts5 {
+  finish_test
+  return
+}
+
+
+do_execsql_test 1.1 {
+  CREATE VIRTUAL TABLE t1 USING fts5(
+      a, b UNINDEXED, content=, contentless_unindexed=1
+  );
+} {}
+
+do_execsql_test 1.2 {
+  INSERT INTO t1 VALUES('abc def', 'ghi jkl');
+}
+
+do_execsql_test 1.3 {
+  SELECT rowid, a, b FROM t1
+} {1 {} {ghi jkl}}
+
+do_execsql_test 1.4 {
+  INSERT INTO t1(rowid, a, b) VALUES(11, 'hello world', 'one two three');
+}
+
+do_execsql_test 1.5 {
+  INSERT INTO t1(t1, rowid, a, b) VALUES('delete', 1, 'abc def', 'ghi jkl');
+}
+
+do_execsql_test 1.6 {
+  SELECT rowid, a, b FROM t1
+} {
+  11 {} {one two three}
+}
+
+do_execsql_test 1.7 {
+  PRAGMA integrity_check
+} {ok}
+
+do_execsql_test 1.8 {
+  INSERT INTO t1(rowid, a, b) VALUES(12, 'abc def', 'ghi jkl');
+}
+
+do_execsql_test 1.9 {
+  SELECT rowid, a, b FROM t1('def')
+} {12 {} {ghi jkl}}
+
+do_execsql_test 1.10 {
+  SELECT rowid, a, b FROM t1('def OR hello') ORDER BY rank
+} {11 {} {one two three} 12 {} {ghi jkl}}
+
+do_execsql_test 1.11 {
+  SELECT rowid, a, b FROM t1 WHERE rowid=11
+} {11 {} {one two three}}
+
+do_execsql_test 1.12 {
+  SELECT rowid, a, b FROM t1
+} {11 {} {one two three} 12 {} {ghi jkl}}
+
+
+fts5_aux_test_functions db
+do_execsql_test 1.12.2 {
+  SELECT rowid, fts5_test_columntext(t1) FROM t1('def OR hello')
+} {11 {{} {one two three}} 12 {{} {ghi jkl}}}
+
+do_execsql_test 1.13 {
+  INSERT INTO t1(t1) VALUES('delete-all');
+}
+
+do_execsql_test 1.14 {
+  SELECT rowid, a, b FROM t1
+} 
+
+do_execsql_test 1.15 {
+  PRAGMA integrity_check
+} {ok}
+
+do_execsql_test 2.0 {
+  CREATE VIRTUAL TABLE t4 USING fts5(
+      x, y UNINDEXED, z, columnsize=0, content='', contentless_unindexed=1
+  );
+}
+
+do_execsql_test 2.1 {
+  INSERT INTO t4(rowid, x, y, z) VALUES(1, 'a a', 'b b b', 'c');
+}
+
+#-------------------------------------------------------------------------
+reset_db
+
+do_execsql_test 3.0 {
+  CREATE VIRTUAL TABLE x1 USING fts5(
+      a UNINDEXED, b, c UNINDEXED, d, content=, contentless_delete=1,
+      contentless_unindexed=1
+  );
+}
+
+do_execsql_test 3.1 {
+  INSERT INTO x1(rowid, a, b, c, d) VALUES(131, 'aaa', 'bbb', 'ccc', 'ddd');
+}
+
+do_execsql_test 3.2 {
+  SELECT * FROM x1
+} {aaa {} ccc {}}
+
+do_execsql_test 3.3 {
+  INSERT INTO x1(rowid, a, b, c, d) VALUES(1000, 'AAA', 'BBB', 'CCC', 'DDD');
+}
+
+do_execsql_test 3.4 {
+  SELECT rowid, * FROM x1
+} {
+  131 aaa {} ccc {}
+  1000 AAA {} CCC {}
+}
+
+do_execsql_test 3.5 {
+  DELETE FROM x1 WHERE rowid=131;
+  SELECT rowid, * FROM x1
+} {
+  1000 AAA {} CCC {}
+}
+
+do_execsql_test 3.6 {
+  INSERT INTO x1(rowid, a, b, c, d) VALUES(112, 'aaa', 'bbb', 'ccc', 'ddd');
+  SELECT rowid, * FROM x1
+} {
+  112 aaa {} ccc {}
+  1000 AAA {} CCC {}
+}
+
+do_execsql_test 3.7 {
+  UPDATE x1 SET b='hello', d='world', rowid=1120 WHERE rowid=112
+}
+
+do_execsql_test 3.8 {
+  SELECT rowid, * FROM x1
+} {
+  1000 AAA {} CCC {}
+  1120 aaa {} ccc {}
+}
+
+do_execsql_test 3.9 {
+  SELECT rowid, * FROM x1('hello');
+} {
+  1120 aaa {} ccc {}
+}
+
+do_execsql_test 3.9 {
+  SELECT rowid, * FROM x1('bbb');
+} {
+  1000 AAA {} CCC {}
+}
+
+fts5_aux_test_functions db
+do_execsql_test 3.10 {
+  SELECT rowid, fts5_test_columntext(x1) FROM x1('b*')
+} {1000 {AAA {} CCC {}}}
+
+#-------------------------------------------------------------------------
+# Check that if contentless_unindexed=1 is not specified, the values
+# of UNINDEXED columns are not stored in the database.
+#
+# Also check that contentless_unindexed=1 is not allowed unless the table
+# is actually contentless.
+#
+reset_db
+do_execsql_test 4.0 {
+  CREATE VIRTUAL TABLE ft USING fts5(a, b, c UNINDEXED, content='');
+  INSERT INTO ft VALUES('one', 'two', 'three');
+  SELECT rowid, * FROM ft;
+} {1 {} {} {}}
+
+do_execsql_test 4.1 {
+  SELECT name FROM sqlite_schema ORDER BY 1
+} {
+  ft ft_config ft_data ft_docsize ft_idx
+}
+
+do_catchsql_test 4.2 {
+  CREATE VIRTUAL TABLE ft2 USING fts5(
+      a, b, c UNINDEXED, contentless_unindexed=1
+  );
+} {1 {contentless_unindexed=1 requires a contentless table}}
+
+do_catchsql_test 4.3 {
+  DELETE FROM ft WHERE rowid=1
+} {1 {cannot DELETE from contentless fts5 table: ft}}
+
+#-------------------------------------------------------------------------
+# Check that the usual restrictions on contentless tables apply to 
+# contentless_unindexed=1 tables.
+#
+reset_db
+do_execsql_test 5.0 {
+  CREATE VIRTUAL TABLE ft USING fts5(
+      a, b UNINDEXED, c, content='', contentless_unindexed=1
+  );
+  INSERT INTO ft VALUES('one', 'two', 'three');
+  INSERT INTO ft VALUES('four', 'five', 'six');
+  INSERT INTO ft VALUES('seven', 'eight', 'nine');
+  SELECT rowid, * FROM ft;
+} {
+  1 {} two {}
+  2 {} five {}
+  3 {} eight {}
+}
+
+do_execsql_test 5.1 {
+  PRAGMA integrity_check
+} {ok}
+
+do_catchsql_test 5.2 {
+  DELETE FROM ft WHERE rowid=2
+} {1 {cannot DELETE from contentless fts5 table: ft}}
+
+do_execsql_test 5.3 {
+  SELECT rowid, * FROM ft('six')
+} {
+  2 {} five {}
+}
+
+do_catchsql_test 5.4 {
+  UPDATE ft SET a='x', b='y', c='z' WHERE rowid=3
+} {1 {cannot UPDATE contentless fts5 table: ft}}
+
+fts5_aux_test_functions db
+
+do_execsql_test 5.5 {
+  SELECT fts5_test_columntext(ft) FROM ft WHERE rowid=3
+} {
+  {{} eight {}}
+}
+do_execsql_test 5.6 {
+  SELECT fts5_test_columntext(ft) FROM ft('three');
+} {
+  {{} two {}}
+}
+
+#-------------------------------------------------------------------------
+# Check that it is possible to UPDATE a contentless_unindexed=1 table
+# if the only columns being modified are UNINDEXED.
+#
+# If the contentless_unindexed=1 table is also contentless_delete=1, then
+# it is also possible to update indexed columns - but only if *all* indexed
+# columns are updated.
+#
+reset_db
+do_execsql_test 6.0 {
+  CREATE VIRTUAL TABLE ft1 USING fts5(a, b UNINDEXED, c UNINDEXED, d,
+      contentless_unindexed=1, content=''
+  );
+
+  INSERT INTO ft1(rowid, a, b, c, d) VALUES
+      (100, 'x y', 'b1', 'c1', 'a b'),
+      (200, 'c d', 'b2', 'c2', 'a b'),
+      (300, 'e f', 'b3', 'c3', 'a b');
+}
+
+do_execsql_test 6.1 {
+  UPDATE ft1 SET b='b1.1', c='c1.1' WHERE rowid=100;
+}
+do_execsql_test 6.2 {
+  UPDATE ft1 SET b='b2.1' WHERE rowid=200;
+}
+do_execsql_test 6.3 {
+  UPDATE ft1 SET c='c3.1' WHERE rowid=300;
+}
+
+do_execsql_test 6.4 {
+  SELECT rowid, a, b, c, d FROM ft1
+} {
+  100 {} b1.1 c1.1 {}
+  200 {} b2.1 c2 {}
+  300 {} b3 c3.1 {}
+}
+
+finish_test
+
@@ -0,0 +1,177 @@
+# 2024 Sep 27
+#
+# 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 regression tests for SQLite library.  The
+# focus of this script is testing the FTS5 module.
+#
+
+source [file join [file dirname [info script]] fts5_common.tcl]
+set testprefix fts5update2
+
+# If SQLITE_ENABLE_FTS5 is not defined, omit this file.
+ifcapable !fts5 {
+  finish_test
+  return
+}
+
+
+#-------------------------------------------------------------------------
+# Test that the various types of UPDATE statement are handled correctly
+# by different table types.
+#
+foreach_detail_mode $testprefix {
+foreach {tn cu} {
+  1 0
+  2 1
+} {
+  reset_db
+  do_execsql_test 1.$tn.1 "
+    CREATE VIRTUAL TABLE ft1 USING fts5(a, b UNINDEXED, c UNINDEXED, d,
+        content='',
+        contentless_unindexed=$cu,
+        detail=%DETAIL%
+    );
+    CREATE VIRTUAL TABLE ft2 USING fts5(a, b UNINDEXED, c UNINDEXED, d,
+        content='',
+        contentless_unindexed=$cu, contentless_delete=1,
+        detail=%DETAIL%
+    );
+  "
+
+  do_execsql_test 1.$tn.2 {
+    INSERT INTO ft1(rowid, a, b, c, d) VALUES(1, 'a1', 'b1', 'c1', 'd1');
+    INSERT INTO ft1(rowid, a, b, c, d) VALUES(2, 'a2', 'b2', 'c2', 'd2');
+    INSERT INTO ft1(rowid, a, b, c, d) VALUES(3, 'a3', 'b3', 'c3', 'd3');
+
+    INSERT INTO ft2(rowid, a, b, c, d) VALUES(1, 'a1', 'b1', 'c1', 'd1');
+    INSERT INTO ft2(rowid, a, b, c, d) VALUES(2, 'a2', 'b2', 'c2', 'd2');
+    INSERT INTO ft2(rowid, a, b, c, d) VALUES(3, 'a3', 'b3', 'c3', 'd3');
+  }
+
+  # It should be possible to update a subset of the UNINDEXED columns of
+  # a contentless table. Regardless of whether or not contentless_unindexed=1
+  # or contentless_delete=1 is set.
+  do_execsql_test 1.$tn.3 {
+    UPDATE ft1 SET b=b||'.1';
+    UPDATE ft2 SET b=b||'.1';
+  }
+  do_execsql_test 1.$tn.4 {
+    UPDATE ft1 SET b=b||'.2', c=c||'.2';
+    UPDATE ft2 SET b=b||'.2', c=c||'.2';
+  }
+
+  set res(0) {
+    1 {} {} {} {}
+    2 {} {} {} {}
+    3 {} {} {} {}
+  }
+  set res(1) {
+    1 {} b1.1.2 c1.2 {}
+    2 {} b2.1.2 c2.2 {}
+    3 {} b3.1.2 c3.2 {}
+  }
+
+  do_execsql_test 1.$tn.5 {
+    SELECT rowid, * FROM ft2
+  } $res($cu)
+
+  do_execsql_test 1.6.1 { SELECT rowid FROM ft1('a2') } {2}
+  do_execsql_test 1.6.2 { SELECT rowid FROM ft2('a2') } {2}
+
+  # It should be possible to update all indexed columns (but no other subset)
+  # if the contentless_delete=1 option is set, as it is for "ft2".
+  do_execsql_test 1.$tn.7 {
+    UPDATE ft2 SET a='a22', d='d22' WHERE rowid=2;
+  }
+  do_execsql_test 1.$tn.8 { SELECT rowid FROM ft2('a22 AND d22') } {2}
+
+  do_execsql_test 1.$tn.9 {
+    UPDATE ft2 SET a='a33', d='d33', b='b3' WHERE rowid=3;
+  }
+
+  set res(1) {
+    1 {} b1.1.2 c1.2 {}
+    2 {} b2.1.2 c2.2 {}
+    3 {} b3 c3.2 {}
+  }
+  do_execsql_test 1.$tn.10 {
+    SELECT rowid, * FROM ft2
+  } $res($cu)
+
+  do_catchsql_test 1.$tn.11 {
+    UPDATE ft2 SET a='a11' WHERE rowid=1
+  } {1 {cannot UPDATE a subset of columns on fts5 contentless-delete table: ft2}}
+  do_catchsql_test 1.$tn.12 {
+    UPDATE ft2 SET d='d11' WHERE rowid=1
+  } {1 {cannot UPDATE a subset of columns on fts5 contentless-delete table: ft2}}
+
+  # It is not possible to update the values of indexed columns if
+  # contentless_delete=1 is not set.
+  do_catchsql_test 1.$tn.13 {
+    UPDATE ft1 SET a='a11' WHERE rowid=1
+  } {1 {cannot UPDATE contentless fts5 table: ft1}}
+  do_catchsql_test 1.$tn.14 {
+    UPDATE ft1 SET d='d11' WHERE rowid=1
+  } {1 {cannot UPDATE contentless fts5 table: ft1}}
+
+  # It should be possible to update the rowid if contentless_delete=1 is
+  # set and all indexed columns are updated.
+  do_execsql_test 1.$tn.15 {
+    UPDATE ft2 SET a='aXone', d='dXone', rowid=11 WHERE rowid=1
+  } 
+
+  set res(0) {
+    2 {} {} {} {}
+    3 {} {} {} {}
+    11 {} {} {} {}
+  }
+  set res(1) {
+    2 {} b2.1.2 c2.2 {}
+    3 {} b3 c3.2 {}
+    11 {} b1.1.2 c1.2 {}
+  }
+  do_execsql_test 1.$tn.16 {
+    SELECT rowid, * FROM ft2
+  } $res($cu)
+
+  # Should not be possible to update the rowid of a contentless_delete=1
+  # table if no indexed columns are updated.
+  do_catchsql_test 1.$tn.17 {
+    UPDATE ft2 SET rowid=12 WHERE rowid=11
+  } {1 {cannot UPDATE a subset of columns on fts5 contentless-delete table: ft2}}
+  do_catchsql_test 1.$tn.18 {
+    UPDATE ft1 SET rowid=12 WHERE rowid=1
+  } {1 {cannot UPDATE contentless fts5 table: ft1}}
+
+  do_execsql_test 1.$tn.19 {
+    UPDATE ft2 SET a='aXtwo', d='dXtwo', c='newval', rowid=12 WHERE rowid=2
+  }  {}
+
+  set res(0) {
+    3 {} {} {} {}
+    11 {} {} {} {}
+    12 {} {} {} {}
+  }
+  set res(1) {
+    3 {} b3 c3.2 {}
+    11 {} b1.1.2 c1.2 {}
+    12 {} b2.1.2 newval {}
+  }
+  do_execsql_test 1.$tn.20 {
+    SELECT rowid, * FROM ft2
+  } $res($cu)
+
+  do_execsql_test 1.$tn.21 {
+    SELECT rowid, * FROM ft2('aXtwo AND dXtwo')
+  } [lrange $res($cu) 10 end]
+
+}} ;# end of [foreach_detail_mode] loop
+
+finish_test
@@ -40,7 +40,7 @@
 **   modification-time of the target file is set to this value before
 **   returning.
 **
-**   If three or more arguments are passed to this function and an
+**   If five or more arguments are passed to this function and an
 **   error is encountered, an exception is raised.
 **
 ** READFILE(FILE):
@@ -110,6 +110,13 @@ SQLITE_EXTENSION_INIT1
 #include <time.h>
 #include <errno.h>

+/* When used as part of the CLI, the sqlite3_stdio.h module will have
+** been included before this one. In that case use the sqlite3_stdio.h
+** #defines.  If not, create our own for fopen().
+*/
+#ifndef _SQLITE3_STDIO_H_
+# define sqlite3_fopen fopen
+#endif

 /*
 ** Structure of the fsdir() table-valued function
@@ -142,7 +149,7 @@ static void readFileContents(sqlite3_context *ctx, const char *zName){
  sqlite3 *db;
  int mxBlob;

-  in = fopen(zName, "rb");
+  in = sqlite3_fopen(zName, "rb");
  if( in==0 ){
    /* File does not exist or is unreadable. Leave the result set to NULL. */
    return;
@@ -397,7 +404,7 @@ static int writeFile(
      sqlite3_int64 nWrite = 0;
      const char *z;
      int rc = 0;
-      FILE *out = fopen(zFile, "wb");
+      FILE *out = sqlite3_fopen(zFile, "wb");
      if( out==0 ) return 1;
      z = (const char*)sqlite3_value_blob(pData);
      if( z ){
@@ -113,7 +113,9 @@
 **     often small.  The developers might revisit that decision later,
 **     should the need arise.
 */
-#ifdef SQLITE_STATIC_PERCENTILE
+#if defined(SQLITE3_H)
+  /* no-op */
+#elif defined(SQLITE_STATIC_PERCENTILE)
 #  include "sqlite3.h"
 #else
 #  include "sqlite3ext.h"
@@ -171,19 +173,6 @@ static int percentSameValue(double a, double b){
  return a>=-0.001 && a<=0.001;
 }

-#if 0
-/* Verify that the elements of the Percentile p are in fact sorted.
-** Used for testing and debugging only.
-*/
-static void percentAssertSorted(Percentile *p){
-  int i;
-  for(i=p->nUsed-2; i>=0 && p->a[i]<=p->a[i+1]; i--){}
-  assert( i<0 );
-}
-#else
-# define percentAssertSorted(X)
-#endif
-
 /*
 ** Search p (which must have p->bSorted) looking for an entry with
 ** value y.  Return the index of that entry.
@@ -229,7 +218,7 @@ static void percentError(sqlite3_context *pCtx, const char *zFormat, ...){
  va_start(ap, zFormat);
  zMsg1 = sqlite3_vmprintf(zFormat, ap);
  va_end(ap);
-  zMsg2 = sqlite3_mprintf(zMsg1, pFunc->zName);
+  zMsg2 = zMsg1 ? sqlite3_mprintf(zMsg1, pFunc->zName) : 0;
  sqlite3_result_error(pCtx, zMsg2, -1);
  sqlite3_free(zMsg1);
  sqlite3_free(zMsg2);
@@ -317,9 +306,8 @@ static void percentStep(sqlite3_context *pCtx, int argc, sqlite3_value **argv){
    p->a[p->nUsed++] = y;
  }else if( p->bKeepSorted ){
    int i;
-    percentAssertSorted(p);
    i = percentBinarySearch(p, y, 0);
-    if( i<p->nUsed ){
+    if( i<(int)p->nUsed ){
      memmove(&p->a[i+1], &p->a[i], (p->nUsed-i)*sizeof(p->a[0]));
    }
    p->a[i] = y;
@@ -428,8 +416,6 @@ static void percentInverse(sqlite3_context *pCtx,int argc,sqlite3_value **argv){
    assert( p->nUsed>1 );
    percentSort(p->a, p->nUsed);
    p->bSorted = 1;
-  }else{
-    percentAssertSorted(p);
  }
  p->bKeepSorted = 1;

@@ -437,11 +423,10 @@ static void percentInverse(sqlite3_context *pCtx,int argc,sqlite3_value **argv){
  i = percentBinarySearch(p, y, 1);
  if( i>=0 ){
    p->nUsed--;
-    if( i<p->nUsed ){
+    if( i<(int)p->nUsed ){
      memmove(&p->a[i], &p->a[i+1], (p->nUsed - i)*sizeof(p->a[0]));
    }
  }
-  percentAssertSorted(p);
 }

 /*
@@ -462,8 +447,6 @@ static void percentCompute(sqlite3_context *pCtx, int bIsFinal){
      assert( p->nUsed>1 );
      percentSort(p->a, p->nUsed);
      p->bSorted = 1;
-    }else{
-      percentAssertSorted(p);
    }
    ix = p->rPct*(p->nUsed-1);
    i1 = (unsigned)ix;
@@ -491,7 +474,7 @@ static void percentValue(sqlite3_context *pCtx){
  percentCompute(pCtx, 0);
 }

-#ifdef _WIN32
+#if defined(_WIN32) && !defined(SQLITE3_H) && !defined(SQLITE_STATIC_PERCENTILE)
 __declspec(dllexport)
 #endif
 int sqlite3_percentile_init(
@@ -500,8 +483,8 @@ int sqlite3_percentile_init(
  const sqlite3_api_routines *pApi
 ){
  int rc = SQLITE_OK;
-  int i;
-#ifdef SQLITE_STATIC_PERCENTILE
+  unsigned int i;
+#if defined(SQLITE3_H) || defined(SQLITE_STATIC_PERCENTILE)
  (void)pApi;      /* Unused parameter */
 #else
  SQLITE_EXTENSION_INIT2(pApi);
@@ -196,7 +196,8 @@ static void hash_step_vformat(
 ** zOut[].  zOut[] must be at least 41 bytes long. */
 static void hash_finish(
  SHA1Context *p,           /* The SHA1 context to finish and render */
-  char *zOut                /* Store hexadecimal hash here */
+  char *zOut,               /* Store hex or binary hash here */
+  int bAsBinary             /* 1 for binary hash, 0 for hex hash */
 ){
  unsigned int i;
  unsigned char finalcount[8];
@@ -215,11 +216,15 @@ static void hash_finish(
  for (i = 0; i < 20; i++){
    digest[i] = (unsigned char)((p->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
  }
-  for(i=0; i<20; i++){
-    zOut[i*2] = zEncode[(digest[i]>>4)&0xf];
-    zOut[i*2+1] = zEncode[digest[i] & 0xf];
+  if( bAsBinary ){
+    memcpy(zOut, digest, 20);
+  }else{
+    for(i=0; i<20; i++){
+      zOut[i*2] = zEncode[(digest[i]>>4)&0xf];
+      zOut[i*2+1] = zEncode[digest[i] & 0xf];
+    }
+    zOut[i*2]= 0;
  }
-  zOut[i*2]= 0;
 }
 /* End of the hashing logic
 *****************************************************************************/
@@ -251,8 +256,13 @@ static void sha1Func(
  }else{
    hash_step(&cx, sqlite3_value_text(argv[0]), nByte);
  }
-  hash_finish(&cx, zOut);
-  sqlite3_result_text(context, zOut, 40, SQLITE_TRANSIENT);
+  if( sqlite3_user_data(context)!=0 ){
+    hash_finish(&cx, zOut, 1);
+    sqlite3_result_blob(context, zOut, 20, SQLITE_TRANSIENT);
+  }else{
+    hash_finish(&cx, zOut, 0);
+    sqlite3_result_blob(context, zOut, 40, SQLITE_TRANSIENT);
+  }
 }

 /*
@@ -365,7 +375,7 @@ static void sha1QueryFunc(
    }
    sqlite3_finalize(pStmt);
  }
-  hash_finish(&cx, zOut);
+  hash_finish(&cx, zOut, 0);
  sqlite3_result_text(context, zOut, 40, SQLITE_TRANSIENT);
 }

@@ -379,11 +389,17 @@ int sqlite3_sha_init(
  const sqlite3_api_routines *pApi
 ){
  int rc = SQLITE_OK;
+  static int one = 1;
  SQLITE_EXTENSION_INIT2(pApi);
  (void)pzErrMsg;  /* Unused parameter */
  rc = sqlite3_create_function(db, "sha1", 1, 
                       SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC,
-                               0, sha1Func, 0, 0);
+                                0, sha1Func, 0, 0);
+  if( rc==SQLITE_OK ){
+    rc = sqlite3_create_function(db, "sha1b", 1, 
+                       SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC,
+                          (void*)&one, sha1Func, 0, 0);
+  }
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "sha1_query", 1, 
                                 SQLITE_UTF8|SQLITE_DIRECTONLY, 0,
@@ -351,7 +351,7 @@ static int substituteCost(char cPrev, char cFrom, char cTo){
 ** Negative values indicate an error:
 **    -1  One of the inputs is NULL
 **    -2  Non-ASCII characters on input
-**    -3  Unable to allocate memory 
+**    -3  Unable to allocate memory
 **
 ** If pnMatch is not NULL, then *pnMatch is set to the number of bytes
 ** of zB that matched the pattern in zA. If zA does not end with a '*',
@@ -360,8 +360,8 @@ static int substituteCost(char cPrev, char cFrom, char cTo){
 ** of zB that was deemed to match zA.
 */
 static int editdist1(const char *zA, const char *zB, int *pnMatch){
-  int nA, nB;            /* Number of characters in zA[] and zB[] */
-  int xA, xB;            /* Loop counters for zA[] and zB[] */
+  unsigned int nA, nB;   /* Number of characters in zA[] and zB[] */
+  unsigned int xA, xB;   /* Loop counters for zA[] and zB[] */
  char cA = 0, cB;       /* Current character of zA and zB */
  char cAprev, cBprev;   /* Previous character of zA and zB */
  char cAnext, cBnext;   /* Next character in zA and zB */
@@ -3021,7 +3021,7 @@ static sqlite3_module spellfix1Module = {
 */
 static int spellfix1Register(sqlite3 *db){
  int rc = SQLITE_OK;
-  int i;
+  unsigned int i;
  rc = sqlite3_create_function(db, "spellfix1_translit", 1,
                               SQLITE_UTF8|SQLITE_DETERMINISTIC, 0,
                                transliterateSqlFunc, 0, 0);
@@ -0,0 +1,211 @@
+/*
+** 2024-09-24
+**
+** 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.
+**
+*************************************************************************
+**
+** Implementation of standard I/O interfaces for UTF-8 that are missing
+** on Windows.
+*/
+#ifdef _WIN32  /* This file is a no-op on all platforms except Windows */
+#ifndef _SQLITE3_STDIO_H_
+#include "sqlite3_stdio.h"
+#endif
+#undef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include "sqlite3.h"
+#include <ctype.h>
+#include <stdarg.h>
+#include <io.h>
+#include <fcntl.h>
+
+/*
+** If the SQLITE_U8TEXT_ONLY option is defined, then only use
+** _O_U8TEXT, _O_WTEXT, and similar together with the UTF-16
+** interfaces to the Windows CRT.  The use of ANSI-only routines
+** like fputs() and ANSI modes like _O_TEXT and _O_BINARY is
+** avoided.
+**
+** The downside of using SQLITE_U8TEXT_ONLY is that it becomes
+** impossible to output a bare newline character (0x0a) - that is,
+** a newline that is not preceded by a carriage return (0x0d).
+** And without that capability, sometimes the output will be slightly
+** incorrect, as extra 0x0d characters will have been inserted where
+** they do not belong.
+**
+** The SQLITE_U8TEXT_STDIO compile-time option is a compromise.
+** It always enables _O_WTEXT or similar for stdin, stdout, stderr,
+** but allows other streams to be _O_TEXT and/or O_BINARY.  The
+** SQLITE_U8TEXT_STDIO option has the same downside as SQLITE_U8TEXT_ONLY
+** in that stray 0x0d characters might appear where they ought not, but
+** at least with this option those characters only appear on standard
+** I/O streams, and not on new streams that might be created by the
+** application using sqlite3_fopen() or sqlite3_popen().
+*/
+#if defined(SQLITE_U8TEXT_ONLY)
+# define UseWtextForOutput(fd) 1
+# define UseWtextForInput(fd)  1
+# define IsConsole(fd)         _isatty(_fileno(fd))
+#elif defined(SQLITE_U8TEXT_STDIO)
+# define UseWtextForOutput(fd) ((fd)==stdout || (fd)==stderr)
+# define UseWtextForInput(fd)  ((fd)==stdin)
+# define IsConsole(fd)         _isatty(_fileno(fd))
+#else
+# define UseWtextForOutput(fd) _isatty(_fileno(fd))
+# define UseWtextForInput(fd)  _isatty(_fileno(fd))
+# define IsConsole(fd)         1
+#endif
+
+/*
+** Work-alike for the fopen() routine from the standard C library.
+*/
+FILE *sqlite3_fopen(const char *zFilename, const char *zMode){
+  FILE *fp = 0;
+  wchar_t *b1, *b2;
+  int sz1, sz2;
+
+  sz1 = (int)strlen(zFilename);
+  sz2 = (int)strlen(zMode);
+  b1 = malloc( (sz1+1)*sizeof(b1[0]) );
+  b2 = malloc( (sz2+1)*sizeof(b1[0]) );
+  if( b1 && b2 ){
+    sz1 = MultiByteToWideChar(CP_UTF8, 0, zFilename, sz1, b1, sz1);
+    b1[sz1] = 0;
+    sz2 = MultiByteToWideChar(CP_UTF8, 0, zMode, sz2, b2, sz2);
+    b2[sz2] = 0;
+    fp = _wfopen(b1, b2);
+  }
+  free(b1);
+  free(b2);
+  return fp;
+}
+
+
+/*
+** Work-alike for the popen() routine from the standard C library.
+*/
+FILE *sqlite3_popen(const char *zCommand, const char *zMode){
+  FILE *fp = 0;
+  wchar_t *b1, *b2;
+  int sz1, sz2;
+
+  sz1 = (int)strlen(zCommand);
+  sz2 = (int)strlen(zMode);
+  b1 = malloc( (sz1+1)*sizeof(b1[0]) );
+  b2 = malloc( (sz2+1)*sizeof(b1[0]) );
+  if( b1 && b2 ){
+    sz1 = MultiByteToWideChar(CP_UTF8, 0, zCommand, sz1, b1, sz1);
+    b1[sz1] = 0;
+    sz2 = MultiByteToWideChar(CP_UTF8, 0, zMode, sz2, b2, sz2);
+    b2[sz2] = 0;
+    fp = _wpopen(b1, b2);
+  }
+  free(b1);
+  free(b2);
+  return fp;
+}
+
+/*
+** Work-alike for fgets() from the standard C library.
+*/
+char *sqlite3_fgets(char *buf, int sz, FILE *in){
+  if( UseWtextForInput(in) ){
+    /* When reading from the command-prompt in Windows, it is necessary
+    ** to use _O_WTEXT input mode to read UTF-16 characters, then translate
+    ** that into UTF-8.  Otherwise, non-ASCII characters all get translated
+    ** into '?'.
+    */
+    wchar_t *b1 = malloc( sz*sizeof(wchar_t) );
+    if( b1==0 ) return 0;
+    _setmode(_fileno(in), IsConsole(in) ? _O_WTEXT : _O_U8TEXT);
+    if( fgetws(b1, sz/4, in)==0 ){
+      sqlite3_free(b1);
+      return 0;
+    }
+    WideCharToMultiByte(CP_UTF8, 0, b1, -1, buf, sz, 0, 0);
+    sqlite3_free(b1);
+    return buf;
+  }else{
+    /* Reading from a file or other input source, just read bytes without
+    ** any translation. */
+    return fgets(buf, sz, in);
+  }
+}
+
+/*
+** Work-alike for fputs() from the standard C library.
+*/
+int sqlite3_fputs(const char *z, FILE *out){
+  if( UseWtextForOutput(out) ){
+    /* When writing to the command-prompt in Windows, it is necessary
+    ** to use _O_WTEXT input mode and write UTF-16 characters.
+    */
+    int sz = (int)strlen(z);
+    wchar_t *b1 = malloc( (sz+1)*sizeof(wchar_t) );
+    if( b1==0 ) return 0;
+    sz = MultiByteToWideChar(CP_UTF8, 0, z, sz, b1, sz);
+    b1[sz] = 0;
+    _setmode(_fileno(out), _O_U8TEXT);
+    fputws(b1, out);
+    sqlite3_free(b1);
+    return 0;
+  }else{
+    /* Writing to a file or other destination, just write bytes without
+    ** any translation. */
+    return fputs(z, out);
+  }
+}
+
+
+/*
+** Work-alike for fprintf() from the standard C library.
+*/
+int sqlite3_fprintf(FILE *out, const char *zFormat, ...){
+  int rc;
+  if( UseWtextForOutput(out) ){
+    /* When writing to the command-prompt in Windows, it is necessary
+    ** to use _O_WTEXT input mode and write UTF-16 characters.
+    */
+    char *z;
+    va_list ap;
+
+    va_start(ap, zFormat);
+    z = sqlite3_vmprintf(zFormat, ap);
+    va_end(ap);
+    sqlite3_fputs(z, out);
+    rc = (int)strlen(z);
+    sqlite3_free(z);
+  }else{
+    /* Writing to a file or other destination, just write bytes without
+    ** any translation. */
+    va_list ap;
+    va_start(ap, zFormat);
+    rc = vfprintf(out, zFormat, ap);
+    va_end(ap);
+  }
+  return rc;
+}
+
+/*
+** Set the mode for an output stream.  mode argument is typically _O_BINARY or
+** _O_TEXT.
+*/
+void sqlite3_fsetmode(FILE *fp, int mode){
+  if( !UseWtextForOutput(fp) ){
+    fflush(fp);
+    _setmode(_fileno(fp), mode);
+  }
+}
+
+#endif /* defined(_WIN32) */
@@ -0,0 +1,55 @@
+/*
+** 2024-09-24
+**
+** 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 header file contains definitions of interfaces that provide 
+** cross-platform I/O for UTF-8 content.
+**
+** On most platforms, the interfaces definitions in this file are
+** just #defines.  For example sqlite3_fopen() is a macro that resolves
+** to the standard fopen() in the C-library.
+**
+** But Windows does not have a standard C-library, at least not one that
+** can handle UTF-8.  So for windows build, the interfaces resolve to new
+** C-language routines contained in the separate sqlite3_stdio.c source file.
+**
+** So on all non-Windows platforms, simply #include this header file and
+** use the interfaces defined herein.  Then to run your application on Windows,
+** also link in the accompanying sqlite3_stdio.c source file when compiling
+** to get compatible interfaces.
+*/
+#ifndef _SQLITE3_STDIO_H_
+#define _SQLITE3_STDIO_H_ 1
+#ifdef _WIN32
+/**** Definitions For Windows ****/
+#include <stdio.h>
+#include <windows.h>
+
+FILE *sqlite3_fopen(const char *zFilename, const char *zMode);
+FILE *sqlite3_popen(const char *zCommand, const char *type);
+char *sqlite3_fgets(char *s, int size, FILE *stream);
+int sqlite3_fputs(const char *s, FILE *stream);
+int sqlite3_fprintf(FILE *stream, const char *format, ...);
+void sqlite3_fsetmode(FILE *stream, int mode);
+
+
+#else
+/**** Definitions For All Other Platforms ****/
+#include <stdio.h>
+#define sqlite3_fopen     fopen
+#define sqlite3_popen     popen
+#define sqlite3_fgets     fgets
+#define sqlite3_fputs     fputs
+#define sqlite3_fprintf   fprintf
+#define sqlite3_fsetmode(F,X)   /*no-op*/
+
+#endif
+#endif /* _SQLITE3_STDIO_H_ */
@@ -182,7 +182,7 @@ static const char *vfstraceNextSystemCall(sqlite3_vfs*, const char *zName);
 **     xyzzy.txt           -> xyzzy.txt
 */
 static const char *fileTail(const char *z){
-  int i;
+  size_t i;
  if( z==0 ) return 0;
  i = strlen(z)-1;
  while( i>0 && z[i-1]!='/' ){ i--; }
@@ -207,36 +207,34 @@ static void vfstrace_printf(
 }

 /*
-** Convert value rc into a string and print it using zFormat.  zFormat
-** should have exactly one %s
+** Try to convert an error code into a symbolic name for that error code.
 */
-static void vfstrace_print_errcode(
-  vfstrace_info *pInfo,
-  const char *zFormat,
-  int rc
-){
-  char zBuf[50];
-  char *zVal;
+static const char *vfstrace_errcode_name(int rc ){
+  const char *zVal = 0;
  switch( rc ){
-    case SQLITE_OK:         zVal = "SQLITE_OK";          break;
-    case SQLITE_ERROR:      zVal = "SQLITE_ERROR";       break;
-    case SQLITE_PERM:       zVal = "SQLITE_PERM";        break;
-    case SQLITE_ABORT:      zVal = "SQLITE_ABORT";       break;
-    case SQLITE_BUSY:       zVal = "SQLITE_BUSY";        break;
-    case SQLITE_NOMEM:      zVal = "SQLITE_NOMEM";       break;
-    case SQLITE_READONLY:   zVal = "SQLITE_READONLY";    break;
-    case SQLITE_INTERRUPT:  zVal = "SQLITE_INTERRUPT";   break;
-    case SQLITE_IOERR:      zVal = "SQLITE_IOERR";       break;
-    case SQLITE_CORRUPT:    zVal = "SQLITE_CORRUPT";     break;
-    case SQLITE_FULL:       zVal = "SQLITE_FULL";        break;
-    case SQLITE_CANTOPEN:   zVal = "SQLITE_CANTOPEN";    break;
-    case SQLITE_PROTOCOL:   zVal = "SQLITE_PROTOCOL";    break;
-    case SQLITE_EMPTY:      zVal = "SQLITE_EMPTY";       break;
-    case SQLITE_SCHEMA:     zVal = "SQLITE_SCHEMA";      break;
-    case SQLITE_CONSTRAINT: zVal = "SQLITE_CONSTRAINT";  break;
-    case SQLITE_MISMATCH:   zVal = "SQLITE_MISMATCH";    break;
-    case SQLITE_MISUSE:     zVal = "SQLITE_MISUSE";      break;
-    case SQLITE_NOLFS:      zVal = "SQLITE_NOLFS";       break;
+    case SQLITE_OK:                 zVal = "SQLITE_OK";                 break;
+    case SQLITE_INTERNAL:           zVal = "SQLITE_INTERNAL";           break;
+    case SQLITE_ERROR:              zVal = "SQLITE_ERROR";              break;
+    case SQLITE_PERM:               zVal = "SQLITE_PERM";               break;
+    case SQLITE_ABORT:              zVal = "SQLITE_ABORT";              break;
+    case SQLITE_BUSY:               zVal = "SQLITE_BUSY";               break;
+    case SQLITE_LOCKED:             zVal = "SQLITE_LOCKED";             break;
+    case SQLITE_NOMEM:              zVal = "SQLITE_NOMEM";              break;
+    case SQLITE_READONLY:           zVal = "SQLITE_READONLY";           break;
+    case SQLITE_INTERRUPT:          zVal = "SQLITE_INTERRUPT";          break;
+    case SQLITE_IOERR:              zVal = "SQLITE_IOERR";              break;
+    case SQLITE_CORRUPT:            zVal = "SQLITE_CORRUPT";            break;
+    case SQLITE_NOTFOUND:           zVal = "SQLITE_NOTFOUND";           break;
+    case SQLITE_FULL:               zVal = "SQLITE_FULL";               break;
+    case SQLITE_CANTOPEN:           zVal = "SQLITE_CANTOPEN";           break;
+    case SQLITE_PROTOCOL:           zVal = "SQLITE_PROTOCOL";           break;
+    case SQLITE_EMPTY:              zVal = "SQLITE_EMPTY";              break;
+    case SQLITE_SCHEMA:             zVal = "SQLITE_SCHEMA";             break;
+    case SQLITE_TOOBIG:             zVal = "SQLITE_TOOBIG";             break;
+    case SQLITE_CONSTRAINT:         zVal = "SQLITE_CONSTRAINT";         break;
+    case SQLITE_MISMATCH:           zVal = "SQLITE_MISMATCH";           break;
+    case SQLITE_MISUSE:             zVal = "SQLITE_MISUSE";             break;
+    case SQLITE_NOLFS:              zVal = "SQLITE_NOLFS";              break;
    case SQLITE_IOERR_READ:         zVal = "SQLITE_IOERR_READ";         break;
    case SQLITE_IOERR_SHORT_READ:   zVal = "SQLITE_IOERR_SHORT_READ";   break;
    case SQLITE_IOERR_WRITE:        zVal = "SQLITE_IOERR_WRITE";        break;
@@ -266,11 +264,30 @@ static void vfstrace_print_errcode(
    case SQLITE_LOCKED_SHAREDCACHE: zVal = "SQLITE_LOCKED_SHAREDCACHE"; break;
    case SQLITE_BUSY_RECOVERY:      zVal = "SQLITE_BUSY_RECOVERY";      break;
    case SQLITE_CANTOPEN_NOTEMPDIR: zVal = "SQLITE_CANTOPEN_NOTEMPDIR"; break;
-    default: {
-       sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", rc);
-       zVal = zBuf;
-       break;
+  }
+  return zVal;
+}
+
+/*
+** Convert value rc into a string and print it using zFormat.  zFormat
+** should have exactly one %s
+*/
+static void vfstrace_print_errcode(
+  vfstrace_info *pInfo,
+  const char *zFormat,
+  int rc
+){
+  const char *zVal;
+  char zBuf[50];
+  zVal = vfstrace_errcode_name(rc);
+  if( zVal==0 ){
+    zVal = vfstrace_errcode_name(rc&0xff);
+    if( zVal ){
+      sqlite3_snprintf(sizeof(zBuf), zBuf, "%s | 0x%x", zVal, rc&0xffff00);
+    }else{
+      sqlite3_snprintf(sizeof(zBuf), zBuf, "%d (0x%x)", rc, rc);
    }
+    zVal = zBuf;
  }
  vfstrace_printf(pInfo, zFormat, zVal);
 }
@@ -399,7 +416,7 @@ static const char *lockName(int eLock){
  const char *azLockNames[] = {
     "NONE", "SHARED", "RESERVED", "PENDING", "EXCLUSIVE"
  };
-  if( eLock<0 || eLock>=sizeof(azLockNames)/sizeof(azLockNames[0]) ){
+  if( eLock<0 || eLock>=(int)(sizeof(azLockNames)/sizeof(azLockNames[0])) ){
    return "???";
  }else{
    return azLockNames[eLock];
@@ -457,12 +474,14 @@ static int vfstraceFileControl(sqlite3_file *pFile, int op, void *pArg){
  vfstrace_info *pInfo = p->pInfo;
  int rc;
  char zBuf[100];
+  char zBuf2[100];
  char *zOp;
+  char *zRVal = 0;
  switch( op ){
-    case SQLITE_FCNTL_LOCKSTATE:    zOp = "LOCKSTATE";          break;
-    case SQLITE_GET_LOCKPROXYFILE:  zOp = "GET_LOCKPROXYFILE";  break;
-    case SQLITE_SET_LOCKPROXYFILE:  zOp = "SET_LOCKPROXYFILE";  break;
-    case SQLITE_LAST_ERRNO:         zOp = "LAST_ERRNO";         break;
+    case SQLITE_FCNTL_LOCKSTATE:           zOp = "LOCKSTATE";           break;
+    case SQLITE_GET_LOCKPROXYFILE:         zOp = "GET_LOCKPROXYFILE";   break;
+    case SQLITE_SET_LOCKPROXYFILE:         zOp = "SET_LOCKPROXYFILE";   break;
+    case SQLITE_LAST_ERRNO:                zOp = "LAST_ERRNO";          break;
    case SQLITE_FCNTL_SIZE_HINT: {
      sqlite3_snprintf(sizeof(zBuf), zBuf, "SIZE_HINT,%lld",
                       *(sqlite3_int64*)pArg);
@@ -474,20 +493,62 @@ static int vfstraceFileControl(sqlite3_file *pFile, int op, void *pArg){
      zOp = zBuf;
      break;
    }
-    case SQLITE_FCNTL_FILE_POINTER: zOp = "FILE_POINTER";       break;
-    case SQLITE_FCNTL_SYNC_OMITTED: zOp = "SYNC_OMITTED";       break;
-    case SQLITE_FCNTL_WIN32_AV_RETRY: zOp = "WIN32_AV_RETRY";   break;
-    case SQLITE_FCNTL_PERSIST_WAL:  zOp = "PERSIST_WAL";        break;
-    case SQLITE_FCNTL_OVERWRITE:    zOp = "OVERWRITE";          break;
-    case SQLITE_FCNTL_VFSNAME:      zOp = "VFSNAME";            break;
-    case SQLITE_FCNTL_TEMPFILENAME: zOp = "TEMPFILENAME";       break;
-    case 0xca093fa0:                zOp = "DB_UNCHANGED";       break;
+    case SQLITE_FCNTL_FILE_POINTER:        zOp = "FILE_POINTER";        break;
+    case SQLITE_FCNTL_WIN32_AV_RETRY:      zOp = "WIN32_AV_RETRY";      break;
+    case SQLITE_FCNTL_PERSIST_WAL: {
+       sqlite3_snprintf(sizeof(zBuf), zBuf, "PERSIST_WAL,%d", *(int*)pArg);
+       zOp = zBuf;
+       break;
+    }
+    case SQLITE_FCNTL_OVERWRITE:           zOp = "OVERWRITE";           break;
+    case SQLITE_FCNTL_VFSNAME:             zOp = "VFSNAME";             break;
+    case SQLITE_FCNTL_POWERSAFE_OVERWRITE: zOp = "POWERSAFE_OVERWRITE"; break;
    case SQLITE_FCNTL_PRAGMA: {
      const char *const* a = (const char*const*)pArg;
      sqlite3_snprintf(sizeof(zBuf), zBuf, "PRAGMA,[%s,%s]",a[1],a[2]);
      zOp = zBuf;
      break;
    }
+    case SQLITE_FCNTL_BUSYHANDLER:         zOp = "BUSYHANDLER";         break;
+    case SQLITE_FCNTL_TEMPFILENAME:        zOp = "TEMPFILENAME";        break;
+    case SQLITE_FCNTL_MMAP_SIZE: {
+      sqlite3_int64 iMMap = *(sqlite3_int64*)pArg;
+      sqlite3_snprintf(sizeof(zBuf), zBuf, "MMAP_SIZE,%lld",iMMap);
+      zOp = zBuf;
+      break;
+    }
+    case SQLITE_FCNTL_TRACE:               zOp = "TRACE";               break;
+    case SQLITE_FCNTL_HAS_MOVED:           zOp = "HAS_MOVED";           break;
+    case SQLITE_FCNTL_SYNC:                zOp = "SYNC";                break;
+    case SQLITE_FCNTL_COMMIT_PHASETWO:     zOp = "COMMIT_PHASETWO";     break;
+    case SQLITE_FCNTL_WIN32_SET_HANDLE:    zOp = "WIN32_SET_HANDLE";    break;
+    case SQLITE_FCNTL_WAL_BLOCK:           zOp = "WAL_BLOCK";           break;
+    case SQLITE_FCNTL_ZIPVFS:              zOp = "ZIPVFS";              break; 
+    case SQLITE_FCNTL_RBU:                 zOp = "RBU";                 break;
+    case SQLITE_FCNTL_VFS_POINTER:         zOp = "VFS_POINTER";         break;
+    case SQLITE_FCNTL_JOURNAL_POINTER:     zOp = "JOURNAL_POINTER";     break;
+    case SQLITE_FCNTL_WIN32_GET_HANDLE:    zOp = "WIN32_GET_HANDLE";    break;
+    case SQLITE_FCNTL_PDB:                 zOp = "PDB";                 break;
+    case SQLITE_FCNTL_BEGIN_ATOMIC_WRITE:  zOp = "BEGIN_ATOMIC_WRITE";  break;
+    case SQLITE_FCNTL_COMMIT_ATOMIC_WRITE: zOp = "COMMIT_ATOMIC_WRITE"; break;
+    case SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE: {
+       zOp = "ROLLBACK_ATOMIC_WRITE";
+       break;
+    }
+    case SQLITE_FCNTL_LOCK_TIMEOUT: {
+       sqlite3_snprintf(sizeof(zBuf), zBuf, "LOCK_TIMEOUT,%d", *(int*)pArg);
+       zOp = zBuf;
+       break;
+    }
+    case SQLITE_FCNTL_DATA_VERSION:        zOp = "DATA_VERSION";        break;
+    case SQLITE_FCNTL_SIZE_LIMIT:          zOp = "SIZE_LIMIT";          break;
+    case SQLITE_FCNTL_CKPT_DONE:           zOp = "CKPT_DONE";           break;
+    case SQLITE_FCNTL_RESERVE_BYTES:       zOp = "RESERVED_BYTES";      break;
+    case SQLITE_FCNTL_CKPT_START:          zOp = "CKPT_START";          break;
+    case SQLITE_FCNTL_EXTERNAL_READER:     zOp = "EXTERNAL_READER";     break;
+    case SQLITE_FCNTL_CKSM_FILE:           zOp = "CKSM_FILE";           break;
+    case SQLITE_FCNTL_RESET_CACHE:         zOp = "RESET_CACHE";         break;
+    case 0xca093fa0:                       zOp = "DB_UNCHANGED";        break;
    default: {
      sqlite3_snprintf(sizeof zBuf, zBuf, "%d", op);
      zOp = zBuf;
@@ -497,15 +558,37 @@ static int vfstraceFileControl(sqlite3_file *pFile, int op, void *pArg){
  vfstrace_printf(pInfo, "%s.xFileControl(%s,%s)",
                  pInfo->zVfsName, p->zFName, zOp);
  rc = p->pReal->pMethods->xFileControl(p->pReal, op, pArg);
-  vfstrace_print_errcode(pInfo, " -> %s\n", rc);
-  if( op==SQLITE_FCNTL_VFSNAME && rc==SQLITE_OK ){
-    *(char**)pArg = sqlite3_mprintf("vfstrace.%s/%z",
+  if( rc==SQLITE_OK ){
+    switch( op ){
+      case SQLITE_FCNTL_VFSNAME: {
+        *(char**)pArg = sqlite3_mprintf("vfstrace.%s/%z",
                                    pInfo->zVfsName, *(char**)pArg);
+        zRVal = *(char**)pArg;
+        break;
+      }
+      case SQLITE_FCNTL_MMAP_SIZE: {
+        sqlite3_snprintf(sizeof(zBuf2), zBuf2, "%lld", *(sqlite3_int64*)pArg);
+        zRVal = zBuf2;
+        break;
+      }
+      case SQLITE_FCNTL_HAS_MOVED:
+      case SQLITE_FCNTL_PERSIST_WAL: {
+        sqlite3_snprintf(sizeof(zBuf2), zBuf2, "%d", *(int*)pArg);
+        zRVal = zBuf2;
+        break;
+      }
+      case SQLITE_FCNTL_PRAGMA:
+      case SQLITE_FCNTL_TEMPFILENAME: {
+        zRVal = *(char**)pArg;
+        break;
+      }
+    }
  }
-  if( (op==SQLITE_FCNTL_PRAGMA || op==SQLITE_FCNTL_TEMPFILENAME)
-   && rc==SQLITE_OK && *(char**)pArg ){
-    vfstrace_printf(pInfo, "%s.xFileControl(%s,%s) returns %s",
-                    pInfo->zVfsName, p->zFName, zOp, *(char**)pArg);
+  if( zRVal ){
+    vfstrace_print_errcode(pInfo, " -> %s", rc);
+    vfstrace_printf(pInfo, ", %s\n", zRVal);
+  }else{
+    vfstrace_print_errcode(pInfo, " -> %s\n", rc);
  }
  return rc;
 }
@@ -840,14 +923,14 @@ int vfstrace_register(
  sqlite3_vfs *pNew;
  sqlite3_vfs *pRoot;
  vfstrace_info *pInfo;
-  int nName;
-  int nByte;
+  size_t nName;
+  size_t nByte;

  pRoot = sqlite3_vfs_find(zOldVfsName);
  if( pRoot==0 ) return SQLITE_NOTFOUND;
  nName = strlen(zTraceName);
  nByte = sizeof(*pNew) + sizeof(*pInfo) + nName + 1;
-  pNew = sqlite3_malloc( nByte );
+  pNew = sqlite3_malloc64( nByte );
  if( pNew==0 ) return SQLITE_NOMEM;
  memset(pNew, 0, nByte);
  pInfo = (vfstrace_info*)&pNew[1];
@@ -890,3 +973,15 @@ int vfstrace_register(
       pInfo->zVfsName, pRoot->zName);
  return sqlite3_vfs_register(pNew, makeDefault);
 }
+
+/*
+** Look for the named VFS.  If it is a TRACEVFS, then unregister it
+** and delete it.
+*/
+void vfstrace_unregister(const char *zTraceName){
+  sqlite3_vfs *pVfs = sqlite3_vfs_find(zTraceName);
+  if( pVfs==0 ) return;
+  if( pVfs->xOpen!=vfstraceOpen ) return;
+  sqlite3_vfs_unregister(pVfs);
+  sqlite3_free(pVfs);
+}
@@ -35,6 +35,14 @@ SQLITE_EXTENSION_INIT1

 #include <zlib.h>

+/* When used as part of the CLI, the sqlite3_stdio.h module will have
+** been included before this one. In that case use the sqlite3_stdio.h
+** #defines.  If not, create our own for fopen().
+*/
+#ifndef _SQLITE3_STDIO_H_
+# define sqlite3_fopen fopen
+#endif
+
 #ifndef SQLITE_OMIT_VIRTUALTABLE

 #ifndef SQLITE_AMALGAMATION
@@ -1291,7 +1299,7 @@ static int zipfileFilter(
  }

  if( 0==pTab->pWriteFd && 0==bInMemory ){
-    pCsr->pFile = zFile ? fopen(zFile, "rb") : 0;
+    pCsr->pFile = zFile ? sqlite3_fopen(zFile, "rb") : 0;
    if( pCsr->pFile==0 ){
      zipfileCursorErr(pCsr, "cannot open file: %s", zFile);
      rc = SQLITE_ERROR;
@@ -1481,7 +1489,7 @@ static int zipfileBegin(sqlite3_vtab *pVtab){
  ** structure into memory. During the transaction any new file data is 
  ** appended to the archive file, but the central directory is accumulated
  ** in main-memory until the transaction is committed.  */
-  pTab->pWriteFd = fopen(pTab->zFile, "ab+");
+  pTab->pWriteFd = sqlite3_fopen(pTab->zFile, "ab+");
  if( pTab->pWriteFd==0 ){
    pTab->base.zErrMsg = sqlite3_mprintf(
        "zipfile: failed to open file %s for writing", pTab->zFile
@@ -336,6 +336,27 @@ struct RbuFrame {
  u32 iWalFrame;
 };

+#ifndef UNUSED_PARAMETER
+/*
+** The following macros are used to suppress compiler warnings and to
+** make it clear to human readers when a function parameter is deliberately
+** left unused within the body of a function. This usually happens when
+** a function is called via a function pointer. For example the
+** implementation of an SQL aggregate step callback may not use the
+** parameter indicating the number of arguments passed to the aggregate,
+** if it knows that this is enforced elsewhere.
+**
+** When a function parameter is not used at all within the body of a function,
+** it is generally named "NotUsed" or "NotUsed2" to make things even clearer.
+** However, these macros may also be used to suppress warnings related to
+** parameters that may or may not be used depending on compilation options.
+** For example those parameters only used in assert() statements. In these
+** cases the parameters are named as per the usual conventions.
+*/
+#define UNUSED_PARAMETER(x) (void)(x)
+#define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y)
+#endif
+
 /*
 ** RBU handle.
 **
@@ -387,7 +408,7 @@ struct sqlite3rbu {
  int rc;                         /* Value returned by last rbu_step() call */
  char *zErrmsg;                  /* Error message if rc!=SQLITE_OK */
  int nStep;                      /* Rows processed for current object */
-  int nProgress;                  /* Rows processed for all objects */
+  sqlite3_int64 nProgress;        /* Rows processed for all objects */
  RbuObjIter objiter;             /* Iterator for skipping through tbl/idx */
  const char *zVfsName;           /* Name of automatically created rbu vfs */
  rbu_file *pTargetFd;            /* File handle open on target db */
@@ -504,7 +525,7 @@ static unsigned int rbuDeltaGetInt(const char **pz, int *pLen){
     v = (v<<6) + c;
  }
  z--;
-  *pLen -= z - zStart;
+  *pLen -= (int)(z - zStart);
  *pz = (char*)z;
  return v;
 }
@@ -689,6 +710,7 @@ static void rbuFossilDeltaFunc(
  char *aOut;

  assert( argc==2 );
+  UNUSED_PARAMETER(argc);

  nOrig = sqlite3_value_bytes(argv[0]);
  aOrig = (const char*)sqlite3_value_blob(argv[0]);
@@ -2268,13 +2290,13 @@ static char *rbuObjIterGetIndexWhere(sqlite3rbu *p, RbuObjIter *pIter){
          else if( c==')' ){
            nParen--;
            if( nParen==0 ){
-              int nSpan = &zSql[i] - pIter->aIdxCol[iIdxCol].zSpan;
+              int nSpan = (int)(&zSql[i] - pIter->aIdxCol[iIdxCol].zSpan);
              pIter->aIdxCol[iIdxCol++].nSpan = nSpan;
              i++;
              break;
            }
          }else if( c==',' && nParen==1 ){
-            int nSpan = &zSql[i] - pIter->aIdxCol[iIdxCol].zSpan;
+            int nSpan = (int)(&zSql[i] - pIter->aIdxCol[iIdxCol].zSpan);
            pIter->aIdxCol[iIdxCol++].nSpan = nSpan;
            pIter->aIdxCol[iIdxCol].zSpan = &zSql[i+1];
          }else if( c=='"' || c=='\'' || c=='`' ){
@@ -2964,6 +2986,8 @@ static void rbuFileSuffix3(const char *zBase, char *z){
    for(i=sz-1; i>0 && z[i]!='/' && z[i]!='.'; i--){}
    if( z[i]=='.' && sz>i+4 ) memmove(&z[i+1], &z[sz-3], 4);
  }
+#else
+  UNUSED_PARAMETER2(zBase,z);
 #endif
 }

@@ -3548,7 +3572,7 @@ static void rbuSaveState(sqlite3rbu *p, int eStage){
          "(%d, %Q), "
          "(%d, %Q), "
          "(%d, %d), "
-          "(%d, %d), "
+          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %lld), "
@@ -3906,6 +3930,7 @@ static void rbuIndexCntFunc(
  sqlite3 *db = (rbuIsVacuum(p) ? p->dbRbu : p->dbMain);

  assert( nVal==1 );
+  UNUSED_PARAMETER(nVal);
  
  rc = prepareFreeAndCollectError(db, &pStmt, &zErrmsg, 
      sqlite3_mprintf("SELECT count(*) FROM sqlite_schema "
@@ -4181,7 +4206,7 @@ sqlite3rbu *sqlite3rbu_vacuum(
 ){
  if( zTarget==0 ){ return rbuMisuseError(); }
  if( zState ){
-    int n = strlen(zState);
+    size_t n = strlen(zState);
    if( n>=7 && 0==memcmp("-vactmp", &zState[n-7], 7) ){
      return rbuMisuseError();
    }
@@ -4398,6 +4423,7 @@ int sqlite3rbu_savestate(sqlite3rbu *p){
 */
 static int xDefaultRename(void *pArg, const char *zOld, const char *zNew){
  int rc = SQLITE_OK;
+  UNUSED_PARAMETER(pArg);
 #if defined(_WIN32_WCE)
  {
    LPWSTR zWideOld;
@@ -5302,6 +5328,9 @@ static int rbuVfsCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){
 ** No-op.
 */
 static int rbuVfsGetLastError(sqlite3_vfs *pVfs, int a, char *b){
+  UNUSED_PARAMETER(pVfs);
+  UNUSED_PARAMETER(a);
+  UNUSED_PARAMETER(b);
  return 0;
 }

@@ -202,6 +202,7 @@ foreach {tn sql1 at sql2} {
  
    sqlite3changegroup grp
    grp schema db main
+    breakpoint
    grp add $C1
    grp add $C2
    set T1 [grp output]
@@ -56,4 +56,28 @@ do_faultsim_test 1 -faults oom* -prep {
  faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
 }

+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 2.0 {
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
+  INSERT INTO t1 VALUES(1, 'one');
+  INSERT INTO t1 VALUES(2, 'two');
+  ALTER TABLE t1 ADD COLUMN c DEFAULT 'abcdefghijklmnopqrstuvwxyz';
+}
+faultsim_save_and_close
+
+do_faultsim_test 2 -faults oom-t* -prep {
+  faultsim_restore_and_reopen
+  db eval {SELECT * FROM sqlite_schema}
+} -body {
+  sqlite3session S db main
+  S attach *
+  execsql {
+    DELETE FROM t1 WHERE a = 1;
+  }
+} -test {
+  faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
+  catch { S delete }
+}
+
 finish_test
@@ -82,6 +82,7 @@ do_execsql_test 1.5 {
  UPDATE p1 SET c=12345 WHERE a = 45;
 }

+breakpoint
 sqlite3changeset_apply_v2 -noaction db $C conflict
 do_execsql_test 1.6 {
  SELECT * FROM c1
@@ -74,6 +74,10 @@ struct SessionBuffer {
 ** input data. Input data may be supplied either as a single large buffer
 ** (e.g. sqlite3changeset_start()) or using a stream function (e.g.
 **  sqlite3changeset_start_strm()).
+**
+** bNoDiscard:
+**   If true, then the only time data is discarded is as a result of explicit
+**   sessionDiscardData() calls. Not within every sessionInputBuffer() call.
 */
 struct SessionInput {
  int bNoDiscard;                 /* If true, do not discard in InputBuffer() */
@@ -1757,16 +1761,19 @@ static void sessionPreupdateOneChange(
      for(i=0; i<(pTab->nCol-pTab->bRowid); i++){
        sqlite3_value *p = 0;
        if( op!=SQLITE_INSERT ){
-          TESTONLY(int trc = ) pSession->hook.xOld(pSession->hook.pCtx, i, &p);
-          assert( trc==SQLITE_OK );
+          /* This may fail if the column has a non-NULL default and was added 
+          ** using ALTER TABLE ADD COLUMN after this record was created. */
+          rc = pSession->hook.xOld(pSession->hook.pCtx, i, &p);
        }else if( pTab->abPK[i] ){
          TESTONLY(int trc = ) pSession->hook.xNew(pSession->hook.pCtx, i, &p);
          assert( trc==SQLITE_OK );
        }

-        /* This may fail if SQLite value p contains a utf-16 string that must
-        ** be converted to utf-8 and an OOM error occurs while doing so. */
-        rc = sessionSerializeValue(0, p, &nByte);
+        if( rc==SQLITE_OK ){
+          /* This may fail if SQLite value p contains a utf-16 string that must
+          ** be converted to utf-8 and an OOM error occurs while doing so. */
+          rc = sessionSerializeValue(0, p, &nByte);
+        }
        if( rc!=SQLITE_OK ) goto error_out;
      }
      if( pTab->bRowid ){
@@ -5124,15 +5131,21 @@ static int sessionChangesetApply(
  int nTab = 0;                   /* Result of sqlite3Strlen30(zTab) */
  SessionApplyCtx sApply;         /* changeset_apply() context object */
  int bPatchset;
+  u64 savedFlag = db->flags & SQLITE_FkNoAction;

  assert( xConflict!=0 );

+  sqlite3_mutex_enter(sqlite3_db_mutex(db));
+  if( flags & SQLITE_CHANGESETAPPLY_FKNOACTION ){
+    db->flags |= ((u64)SQLITE_FkNoAction);
+    db->aDb[0].pSchema->schema_cookie -= 32;
+  }
+
  pIter->in.bNoDiscard = 1;
  memset(&sApply, 0, sizeof(sApply));
  sApply.bRebase = (ppRebase && pnRebase);
  sApply.bInvertConstraints = !!(flags & SQLITE_CHANGESETAPPLY_INVERT);
  sApply.bIgnoreNoop = !!(flags & SQLITE_CHANGESETAPPLY_IGNORENOOP);
-  sqlite3_mutex_enter(sqlite3_db_mutex(db));
  if( (flags & SQLITE_CHANGESETAPPLY_NOSAVEPOINT)==0 ){
    rc = sqlite3_exec(db, "SAVEPOINT changeset_apply", 0, 0, 0);
  }
@@ -5294,6 +5307,12 @@ static int sessionChangesetApply(
  sqlite3_free((char*)sApply.azCol);  /* cast works around VC++ bug */
  sqlite3_free((char*)sApply.constraints.aBuf);
  sqlite3_free((char*)sApply.rebase.aBuf);
+
+  if( (flags & SQLITE_CHANGESETAPPLY_FKNOACTION) && savedFlag==0 ){
+    assert( db->flags & SQLITE_FkNoAction );
+    db->flags &= ~((u64)SQLITE_FkNoAction);
+    db->aDb[0].pSchema->schema_cookie -= 32;
+  }
  sqlite3_mutex_leave(sqlite3_db_mutex(db));
  return rc;
 }
@@ -5322,12 +5341,6 @@ int sqlite3changeset_apply_v2(
  sqlite3_changeset_iter *pIter;  /* Iterator to skip through changeset */  
  int bInv = !!(flags & SQLITE_CHANGESETAPPLY_INVERT);
  int rc = sessionChangesetStart(&pIter, 0, 0, nChangeset, pChangeset, bInv, 1);
-  u64 savedFlag = db->flags & SQLITE_FkNoAction;
-
-  if( flags & SQLITE_CHANGESETAPPLY_FKNOACTION ){
-    db->flags |= ((u64)SQLITE_FkNoAction);
-    db->aDb[0].pSchema->schema_cookie -= 32;
-  }

  if( rc==SQLITE_OK ){
    rc = sessionChangesetApply(
@@ -5335,11 +5348,6 @@ int sqlite3changeset_apply_v2(
    );
  }

-  if( (flags & SQLITE_CHANGESETAPPLY_FKNOACTION) && savedFlag==0 ){
-    assert( db->flags & SQLITE_FkNoAction );
-    db->flags &= ~((u64)SQLITE_FkNoAction);
-    db->aDb[0].pSchema->schema_cookie -= 32;
-  }
  return rc;
 }

@@ -5660,6 +5668,9 @@ static int sessionChangesetExtendRecord(
    sessionAppendBlob(pOut, aRec, nRec, &rc);
    if( rc==SQLITE_OK && pTab->pDfltStmt==0 ){
      rc = sessionPrepareDfltStmt(pGrp->db, pTab, &pTab->pDfltStmt);
+      if( rc==SQLITE_OK && SQLITE_ROW!=sqlite3_step(pTab->pDfltStmt) ){
+        rc = sqlite3_errcode(pGrp->db);
+      }
    }
    for(ii=nCol; rc==SQLITE_OK && ii<pTab->nCol; ii++){
      int eType = sqlite3_column_type(pTab->pDfltStmt, ii);
@@ -5676,6 +5687,7 @@ static int sessionChangesetExtendRecord(
          }
          if( SQLITE_OK==sessionBufferGrow(pOut, 8, &rc) ){
            sessionPutI64(&pOut->aBuf[pOut->nBuf], iVal);
+            pOut->nBuf += 8;
          }
          break;
        }
@@ -5815,6 +5827,8 @@ static int sessionOneChangeToHash(
  u8 *aRec = &pIter->in.aData[pIter->in.iCurrent + 2];
  int nRec = (pIter->in.iNext - pIter->in.iCurrent) - 2;

+  assert( nRec>0 );
+
  /* Ensure that only changesets, or only patchsets, but not a mixture
  ** of both, are being combined. It is an error to try to combine a
  ** changeset and a patchset.  */
@@ -5892,6 +5906,7 @@ static int sessionChangesetToHash(
  int nRec;
  int rc = SQLITE_OK;

+  pIter->in.bNoDiscard = 1;
  while( SQLITE_ROW==(sessionChangesetNext(pIter, &aRec, &nRec, 0)) ){
    rc = sessionOneChangeToHash(pGrp, pIter, bRebase);
    if( rc!=SQLITE_OK ) break;
@@ -383,10 +383,10 @@ static int SQLITE_TCLAPI test_session_cmd(
        { "rowid", SQLITE_SESSION_OBJCONFIG_ROWID },
        { 0, 0 }
      };
-      size_t sz = sizeof(aOpt[0]);
+      int sz = (int)sizeof(aOpt[0]);

      int iArg;
-      int iOpt;
+      Tcl_Size iOpt;
      if( Tcl_GetIndexFromObjStruct(interp,objv[2],aOpt,sz,"option",0,&iOpt) ){
        return TCL_ERROR;
      }
@@ -803,7 +803,7 @@ static int SQLITE_TCLAPI testSqlite3changesetApply(
  if( bV2 ){
    while( objc>1 ){
      const char *z1 = Tcl_GetString(objv[1]);
-      int n = strlen(z1);
+      int n = (int)strlen(z1);
      if( n>3 && n<=12 && 0==sqlite3_strnicmp("-nosavepoint", z1, n) ){
        flags |= SQLITE_CHANGESETAPPLY_NOSAVEPOINT;
      }
@@ -1119,7 +1119,7 @@ static int SQLITE_TCLAPI test_sqlite3session_foreach(

  while( objc>1 ){
    char *zOpt = Tcl_GetString(objv[1]);
-    int nOpt = strlen(zOpt);
+    int nOpt = (int)strlen(zOpt);
    if( zOpt[0]!='-' ) break;
    if( nOpt<=7 && 0==sqlite3_strnicmp(zOpt, "-invert", nOpt) ){
      isInvert = 1;
@@ -15,8 +15,9 @@
 #      by the target name. Rebuild is necessary for all components to get
 #      the desired optimization level.
 #
-#  quick, q = do just a minimal build (sqlite3.js/wasm, tester1) for
-#      faster development-mode turnaround.
+#  quick, q = do just build the essentials for testing
+#      (sqlite3.js/wasm, tester1) for faster development-mode
+#      turnaround.
 #
 #  dist = create end user deliverables. Add dist.build=oX to build
 #      with a specific optimization level, where oX is one of the
@@ -35,25 +36,21 @@
 # - wasm-strip for release builds: https://github.com/WebAssembly/wabt
 # - InfoZip for 'dist' zip file
 ########################################################################
-#
-# Significant TODOs for this build include, but are not necessarily
-# limited to:
-#
-# 1) Consolidate the code generation for sqlite3*.*js into a script
-#    which generates the makefile code, rather than using $(call) and
-#    $(eval), or at least centralize the setup of the numerous vars
-#    related to each build variant $(JS_BUILD_MODES). (Update: an
-#    external script was attempted but generating properly-escaped
-#    makefile code from within a shell script is even less legible
-#    than the $(eval) indirection going on in this file.)
-#
 default: all
 #default: quick
-SHELL := $(shell which bash 2>/dev/null)
+SHELL := $(firstword $(wildcard /usr/local/bin/bash /usr/bin/bash /bin/bash))
+ifeq (,$(SHELL))
+  $(error Cannot find the bash shell)
+endif
 MAKEFILE := $(lastword $(MAKEFILE_LIST))
 CLEAN_FILES :=
-DISTCLEAN_FILES := ./--dummy--
-release: oz
+DISTCLEAN_FILES :=
+MAKING_CLEAN := $(if $(filter %clean,$(MAKECMDGOALS)),1,0)
+.PHONY: clean distclean
+clean:
+	-rm -f $(CLEAN_FILES)
+distclean: clean
+	-rm -f $(DISTCLEAN_FILES)

 ########################################################################
 # JS_BUILD_NAMES exists for documentation purposes only. It enumerates
@@ -86,46 +83,6 @@ JS_BUILD_NAMES := sqlite3 sqlite3-wasmfs
 #
 JS_BUILD_MODES := vanilla esm bunder-friendly node

-########################################################################
-# Emscripten SDK home dir and related binaries...
-EMSDK_HOME ?= $(word 1,$(wildcard $(HOME)/emsdk $(HOME)/src/emsdk))
-emcc.bin ?= $(word 1,$(wildcard $(EMSDK_HOME)/upstream/emscripten/emcc) $(shell which emcc))
-ifeq (,$(emcc.bin))
-  $(error Cannot find emcc.)
-endif
-emcc.version := $(shell "$(emcc.bin)" --version | sed -n 1p \
-                  | sed -e 's/^.* \([3-9][^ ]*\) .*$$/\1/;')
-ifeq (,$(emcc.version))
-  $(warning Cannot determine emcc version. This might unduly impact build flags.)
-else
-  $(info using emcc version [$(emcc.version)])
-endif
-
-wasm-strip ?= $(shell which wasm-strip 2>/dev/null)
-ifeq (,$(filter clean,$(MAKECMDGOALS)))
-ifeq (,$(wasm-strip))
-  $(info WARNING: *******************************************************************)
-  $(info WARNING: builds using -O2/-O3/-Os/-Oz will minify WASM-exported names,)
-  $(info WARNING: breaking _All The Things_. The workaround for that is to build)
-  $(info WARNING: with -g3 (which explodes the file size) and then strip the debug)
-  $(info WARNING: info after compilation, using wasm-strip, to shrink the wasm file.)
-  $(info WARNING: wasm-strip was not found in the PATH so we cannot strip those.)
-  $(info WARNING: If this build uses any optimization level higher than -O1 then)
-  $(info WARNING: the ***resulting JS code WILL NOT BE USABLE***.)
-  $(info WARNING: wasm-strip is part of the wabt package:)
-  $(info WARNING:    https://github.com/WebAssembly/wabt)
-  $(info WARNING: on Ubuntu-like systems it can be installed with:)
-  $(info WARNING:    sudo apt install wabt)
-  $(info WARNING: *******************************************************************)
-endif
-endif # 'make clean' check
-
-ifeq (,$(wasm-strip))
-  maybe-wasm-strip = echo "not wasm-stripping"
-else
-  maybe-wasm-strip = $(wasm-strip)
-endif
-
 ########################################################################
 # dir.top = the top dir of the canonical build tree, where
 # sqlite3.[ch] live.
@@ -141,41 +98,19 @@ dir.common := common
 dir.fiddle := fiddle
 dir.fiddle-debug := fiddle-debug
 dir.tool := $(dir.top)/tool
-CLEAN_FILES += *~ $(dir.jacc)/*~ $(dir.api)/*~ $(dir.common)/*~ $(dir.fiddle)/*~ \
-  $(dir.fiddle-debug)/*
-
-########################################################################
-# dir.dout = output dir for deliverables.
-#
-# MAINTENANCE REMINDER: the output .js and .wasm files of certain emcc
-# buildables must be in _this_ dir, rather than a subdir, or else
-# parts of the generated code get confused and cannot load
-# property. Specifically, when X.js loads X.wasm, whether or not X.js
-# uses the correct path for X.wasm depends on how it's loaded: an HTML
-# script tag will resolve it intuitively, whereas a Worker's call to
-# importScripts() will not.  That's a fundamental incompatibility with
-# how URL resolution in JS happens between those two contexts. See:
-#
-# https://zzz.buzz/2017/03/14/relative-uris-in-web-development/
-#
-# We unfortunately have no way, from Worker-initiated code, to
-# automatically resolve the path from X.js to X.wasm.
-#
-# We have an "only slightly unsightly" solution for our main builds
-# but it does not work for the WASMFS builds, so those builds have to
-# be built to _this_ directory and can only run when the client app is
-# loaded from the same directory.
+# dir.dout = output dir for deliverables
 dir.dout := $(dir.wasm)/jswasm
 # dir.tmp = output dir for intermediary build files, as opposed to
 # end-user deliverables.
 dir.tmp := $(dir.wasm)/bld
-CLEAN_FILES += $(dir.tmp)/* $(dir.dout)/*
-ifeq (,$(wildcard $(dir.dout)))
-  dir._tmp := $(shell mkdir -p $(dir.dout))
-endif
-ifeq (,$(wildcard $(dir.tmp)))
-  dir._tmp := $(shell mkdir -p $(dir.tmp))
-endif
+dir.wasmfs := $(dir.dout)
+
+MKDIR.bld := $(dir.tmp)
+$(MKDIR.bld):
+	-mkdir -p $@ $(dir.dout)
+
+CLEAN_FILES += *~ $(dir.jacc)/*~ $(dir.api)/*~ $(dir.common)/*~ $(dir.fiddle)/*~ \
+  $(dir.fiddle-debug)/* $(dir.dout)/* $(dir.tmp)/*

 ########################################################################
 # Set up sqlite3.c and sqlite3.h...
@@ -197,48 +132,14 @@ endif
 sqlite3.canonical.c := $(dir.top)/sqlite3.c
 sqlite3.c ?= $(firstword $(wildcard $(dir.top)/sqlite3-see.c) $(sqlite3.canonical.c))
 sqlite3.h := $(dir.top)/sqlite3.h
-ifeq (,$(shell grep sqlite3_activate_see $(sqlite3.c) 2>/dev/null))
+
+ifneq (1,$(MAKING_CLEAN))
+ifeq (,$(shell grep sqlite3_activate_see $(sqlite3.c)))
  SQLITE_C_IS_SEE := 0
 else
  SQLITE_C_IS_SEE := 1
-  $(info This is an SEE build.)
+  $(info This is an SEE build)
 endif
-# Most SQLITE_OPT flags are set in sqlite3-wasm.c but we need them
-# made explicit here for building speedtest1.c.
-SQLITE_OPT = \
-  -DSQLITE_ENABLE_FTS5 \
-  -DSQLITE_ENABLE_RTREE \
-  -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
-  -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION \
-  -DSQLITE_ENABLE_STMTVTAB \
-  -DSQLITE_ENABLE_DBPAGE_VTAB \
-  -DSQLITE_ENABLE_DBSTAT_VTAB \
-  -DSQLITE_ENABLE_BYTECODE_VTAB \
-  -DSQLITE_ENABLE_OFFSET_SQL_FUNC \
-  -DSQLITE_OMIT_LOAD_EXTENSION \
-  -DSQLITE_OMIT_DEPRECATED \
-  -DSQLITE_OMIT_UTF16 \
-  -DSQLITE_OMIT_SHARED_CACHE \
-  -DSQLITE_THREADSAFE=0 \
-  -DSQLITE_TEMP_STORE=2 \
-  -DSQLITE_OS_KV_OPTIONAL=1 \
-  '-DSQLITE_DEFAULT_UNIX_VFS="unix-none"' \
-  -DSQLITE_USE_URI=1 \
-  -DSQLITE_WASM_ENABLE_C_TESTS \
-  -DSQLITE_C=$(sqlite3.c)
-#SQLITE_OPT += -DSQLITE_DEBUG
-# Enabling SQLITE_DEBUG will break sqlite3_wasm_vfs_create_file()
-# (and thus sqlite3_js_vfs_create_file()). Those functions are
-# deprecated and alternatives are in place, but this crash behavior
-# can be used to find errant uses of sqlite3_js_vfs_create_file()
-# in client code.
-
-########################################################################
-# minimal=1 disables all "extraneous" stuff from sqlite3-wasm.c, the
-# goal being to create a WASM file with only the core APIs.
-minimal ?= 0
-ifeq (1,$(minimal))
-  SQLITE_OPT += -DSQLITE_WASM_MINIMAL
 endif

 ########################################################################@
@@ -250,21 +151,179 @@ $(sqlite3.h):
 	$(MAKE) -C $(dir.top) sqlite3.c
 $(sqlite3.c): $(sqlite3.h)

-.PHONY: clean distclean
-clean:
-	-rm -f $(CLEAN_FILES)
-distclean: clean
-	-rm -f $(DISTCLEAN_FILES)
+########################################################################
+# Special-case builds for which we require certain pre-conditions
+# which, if not met, may cause warnings or fatal errors in the build.
+# This also affects the default optimization level flags. Note that
+# the fiddle targets are in this list because they are used for
+# generating sqlite.org/fiddle.
+OPTIMIZED_TARGETS := dist snapshot fiddle fiddle.debug

-ifeq (release,$(filter release,$(MAKECMDGOALS)))
-  ifeq (,$(wasm-strip))
-    $(error Cannot make release-quality binary because wasm-strip is not available. \
-            See notes in the warning above)
+ifneq (1,$(MAKING_CLEAN))
+  ifeq (,$(filter $(OPTIMIZED_TARGETS),$(MAKECMDGOALS)))
+    $(info ==============================================================)
+    $(info == Development build. Make one of (dist, snapshot) for a)
+    $(info == smaller release build.)
+    $(info ==============================================================)
  endif
-else
-  $(info Development build. Use '$(MAKE) release' for a smaller release build.)
 endif

+########################################################################
+# Find emcc (Emscripten compiler)...
+ifeq (1,$(MAKING_CLEAN))
+  emcc.bin := echo
+  emcc.version := unknown
+else
+  emcc.bin := $(shell which emcc 2>/dev/null)
+  ifeq (,$(emcc.bin))
+    ifneq (,$(EMSDK_HOME))
+      emcc.bin := $(wildcard $(EMSDK_HOME)/upstream/emscripten/emcc)
+    endif
+    ifeq (,$(emcc.bin))
+      $(error Cannot find emcc in path.)
+    endif
+  endif
+  emcc.version := $(shell $(emcc.bin) --version | sed -n 1p | sed -e 's/^.* \([3-9][^ ]*\) .*$$/\1/;')
+  $(info using emcc version [$(emcc.version)])
+endif
+#########################################################################
+# Find wasm-strip, which we need for release builds (see below for
+# why) but not strictly for non-release builds.
+ifeq (1,$(MAKING_CLEAN))
+  wasm-strip-bin := irrelevant
+else
+  wasm-strip.bin ?= $(shell which wasm-strip 2>/dev/null)
+  ifeq (,$(wasm-strip.bin))
+    $(info WARNING: *******************************************************************)
+    $(info WARNING: Builds using -O2/-O3/-Os/-Oz will minify WASM-exported names,)
+    $(info WARNING: breaking _All The Things_. The workaround for that is to build)
+    $(info WARNING: with -g3 (which explodes the file size) and then strip the debug)
+    $(info WARNING: info after compilation, using wasm-strip, to shrink the wasm file.)
+    $(info WARNING: wasm-strip was not found in the PATH so we cannot strip those.)
+    $(info WARNING: If this build uses any optimization level higher than -O1 then)
+    $(info WARNING: the ***resulting JS code WILL NOT BE USABLE***.)
+    $(info WARNING: wasm-strip is part of the wabt package:)
+    $(info WARNING:    https://github.com/WebAssembly/wabt)
+    $(info WARNING: on Ubuntu-like systems it can be installed with:)
+    $(info WARNING:    sudo apt install wabt)
+    $(info WARNING: *******************************************************************)
+    ifneq (,$(filter $(OPTIMIZED_TARGETS),$(MAKECMDGOALS)))
+      $(error Cannot make release-quality binary because wasm-strip is not available.)
+    endif
+    wasm-strip.bin := echo "not wasm-stripping"
+  endif
+endif
+maybe-wasm-strip := $(wasm-strip.bin)
+
+########################################################################
+# barebones=1 disables all "extraneous" stuff from sqlite3-wasm.c, the
+# goal being to create a WASM file with only the core APIs.
+ifeq (1,$(barebones))
+  wasm-bare-bones := 1
+  $(info ==============================================================)
+  $(info == This is a bare-bones build. It trades away features for)
+  $(info == a smaller .wasm file.)
+  $(info ==============================================================)
+else
+  wasm-bare-bones := 0
+endif
+undefine barebones
+
+# Common options for building sqlite3-wasm.c and speedtest1.c.
+# Explicit ENABLEs...
+SQLITE_OPT.common := \
+  -DSQLITE_THREADSAFE=0 \
+  -DSQLITE_TEMP_STORE=2 \
+  -DSQLITE_ENABLE_MATH_FUNCTIONS \
+  -DSQLITE_OS_KV_OPTIONAL=1 \
+  '-DSQLITE_DEFAULT_UNIX_VFS="unix-none"' \
+  -DSQLITE_USE_URI=1 \
+  -DSQLITE_C=$(sqlite3.c) \
+  -DSQLITE_OMIT_DEPRECATED \
+  -DSQLITE_OMIT_UTF16 \
+  -DSQLITE_OMIT_LOAD_EXTENSION \
+  -DSQLITE_OMIT_SHARED_CACHE
+# ^^^ These particular OMITs are hard-coded in sqlite3-wasm.c and
+# removing them from this list will serve only to break the speedtest1
+# builds.
+
+# Currently always needed but TODO is paring tester1.c-pp.js down
+# to be able to run without this:
+SQLITE_OPT.common += -DSQLITE_WASM_ENABLE_C_TESTS
+
+# Extra flags for full-featured builds...
+SQLITE_OPT.full-featured := \
+  -DSQLITE_ENABLE_BYTECODE_VTAB \
+  -DSQLITE_ENABLE_DBPAGE_VTAB \
+  -DSQLITE_ENABLE_DBSTAT_VTAB \
+  -DSQLITE_ENABLE_FTS5 \
+  -DSQLITE_ENABLE_MATH_FUNCTIONS \
+  -DSQLITE_ENABLE_OFFSET_SQL_FUNC \
+  -DSQLITE_ENABLE_PREUPDATE_HOOK \
+  -DSQLITE_ENABLE_RTREE \
+  -DSQLITE_ENABLE_SESSION \
+  -DSQLITE_ENABLE_STMTVTAB \
+  -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
+
+ifeq (0,$(wasm-bare-bones))
+  # The so-called canonical build is full-featured:
+  SQLITE_OPT := \
+    $(SQLITE_OPT.common) \
+    $(SQLITE_OPT.full-featured)
+else
+  # The so-called bare-bones build is exactly that:
+  SQLITE_OPT := \
+    $(SQLITE_OPT.common) \
+    -DSQLITE_WASM_BARE_BONES
+  # SQLITE_WASM_BARE_BONES tells sqlite3-wasm.c to explicitly omit
+  # a bunch of stuff, in the interest of keeping the wasm file size
+  # down. As of this writing it equates to:
+  #
+  #  -USQLITE_ENABLE_DBPAGE_VTAB
+  #  -USQLITE_ENABLE_DBSTAT_VTAB
+  #  -USQLITE_ENABLE_EXPLAIN_COMMENTS
+  #  -USQLITE_ENABLE_FTS5
+  #  -USQLITE_ENABLE_OFFSET_SQL_FUNC
+  #  -USQLITE_ENABLE_PREUPDATE_HOOK
+  #  -USQLITE_ENABLE_RTREE
+  #  -USQLITE_ENABLE_SESSION
+  #  -USQLITE_ENABLE_STMTVTAB
+  #  -DSQLITE_OMIT_AUTHORIZATION
+  #  -DSQLITE_OMIT_GET_TABLE
+  #  -DSQLITE_OMIT_INCRBLOB
+  #  -DSQLITE_OMIT_INTROSPECTION_PRAGMAS
+  #  -DSQLITE_OMIT_JSON
+  #  -DSQLITE_OMIT_PROGRESS_CALLBACK
+  #  -DSQLITE_OMIT_WAL
+  #
+  # There are others we want here but which require explicit OMIT when
+  # creating their amalgamation, and that step is TODO:
+  #
+  #  -DSQLITE_OMIT_EXPLAIN
+  #  -DSQLITE_OMIT_TRIGGER
+  #  -DSQLITE_OMIT_VIRTUALTABLE
+  #  -DSQLITE_OMIT_WINDOWFUNC
+endif
+
+#SQLITE_OPT += -DSQLITE_DEBUG
+# Enabling SQLITE_DEBUG will break sqlite3_wasm_vfs_create_file()
+# (and thus sqlite3_js_vfs_create_file()). Those functions are
+# deprecated and alternatives are in place, but this crash behavior
+# can be used to find errant uses of sqlite3_js_vfs_create_file()
+# in client code.
+
+########################################################################
+# The following flags are hard-coded into sqlite3-wasm.c and cannot be
+# modified via the build process:
+#
+#  SQLITE_ENABLE_API_ARMOR
+#  SQLITE_OMIT_LOAD_EXTENSION
+#  SQLITE_OMIT_DEPRECATED
+#  SQLITE_OMIT_UTF16
+#  SQLITE_OMIT_SHARED_CACHE
+########################################################################
+
+
 ########################################################################
 # Adding custom C code via sqlite3_wasm_extra_init.c:
 #
@@ -321,6 +380,18 @@ $(bin.stripccomments): $(bin.stripccomments).c $(MAKEFILE)
 	$(CC) -o $@ $<
 DISTCLEAN_FILES += $(bin.stripccomments)

+########################################################################
+# bin.mkwb is used for generating some of the makefile code for the
+# various wasm builds. It used to be generated in this makefile via a
+# difficult-to-read/maintain block of $(eval)'d code. Attempts were
+# made to generate it from tcl and bash (shell) but having to escape
+# the $ references in those languages made it just as illegible as the
+# native makefile code. Somewhat surprisingly, moving that code generation
+# to C makes it slightly less illegible than the previous 3 options.
+bin.mkwb := ./mkwasmbuilds
+$(bin.mkwb): $(bin.mkwb).c $(MAKEFILE)
+	$(CC) -o $@ $<
+DISTCLEAN_FILES += $(bin.mkwb)

 ########################################################################
 # C-PP.FILTER: a $(call)able to transform $(1) to $(2) via:
@@ -360,6 +431,7 @@ $(bin.c-pp): c-pp.c $(sqlite3.c) $(MAKEFILE)
 		-DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_DEPRECATED -DSQLITE_OMIT_UTF16 \
 		-DSQLITE_OMIT_SHARED_CACHE -DSQLITE_OMIT_WAL -DSQLITE_THREADSAFE=0 \
 		-DSQLITE_TEMP_STORE=3
+DISTCLEAN_FILES += $(bin.c-pp)
 C-PP.FILTER.global ?=
 ifeq (1,$(SQLITE_C_IS_SEE))
  C-PP.FILTER.global += -Denable-see
@@ -371,7 +443,7 @@ define C-PP.FILTER
 # $3 = optional c-pp -D... flags
 $(2): $(1) $$(MAKEFILE) $$(bin.c-pp)
 	$$(bin.c-pp) -f $(1) -o $$@ $(3) $(C-PP.FILTER.global)
-CLEAN_FILES += $(2)
+#CLEAN_FILES += $(2)
 endef
 # /end C-PP.FILTER
 ########################################################################
@@ -386,7 +458,17 @@ emcc.WASM_BIGINT ?= 1
 # emcc_opt = optimization-related flags. These are primarily used by
 # the various oX targets. build times for -O levels higher than 0 are
 # painful at dev-time.
-emcc_opt ?= -O0
+#
+# When running any of the $(OPTIMIZED_TARGETS) explicitly, e.g. for a
+# release distribution, use a higher optimization level. Experience
+# has shown -Oz to produce the smallest deliverables with only a
+# roughly 10% performance hit in the resulting WASM file compared to
+# -O2 (which consistently creates the fastest-running deliverables).
+ifeq (,$(filter $(OPTIMIZED_TARGETS),$(MAKECMDGOALS)))
+  emcc_opt ?= -O0
+else
+  emcc_opt ?= -Oz
+endif

 # When passing emcc_opt from the CLI, += and re-assignment have no
 # effect, so emcc_opt+=-g3 doesn't work. So...
@@ -421,24 +503,16 @@ emcc_opt_full := $(emcc_opt) -g3
 ########################################################################
 # EXPORTED_FUNCTIONS.* = files for use with Emscripten's
 # -sEXPORTED_FUNCTION flag.
-EXPORTED_FUNCTIONS.api.core := $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-core)
+EXPORTED_FUNCTIONS.api.core := $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-core
 EXPORTED_FUNCTIONS.api.in := $(EXPORTED_FUNCTIONS.api.core)
 ifeq (1,$(SQLITE_C_IS_SEE))
-  EXPORTED_FUNCTIONS.api.in += $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-see)
+  EXPORTED_FUNCTIONS.api.in += $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-see
 endif
-ifeq (0,$(minimal))
-  EXPORTED_FUNCTIONS.api.in += \
-    $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-auth) \
-    $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-preupdate) \
-    $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-session) \
-    $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-vtab)
-else
-  $(info ========================================)
-  $(info This is a minimal-mode build)
-  $(info ========================================)
+ifeq (0,$(wasm-bare-bones))
+  EXPORTED_FUNCTIONS.api.in += $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-extras
 endif
 EXPORTED_FUNCTIONS.api := $(dir.tmp)/EXPORTED_FUNCTIONS.api
-$(EXPORTED_FUNCTIONS.api): $(EXPORTED_FUNCTIONS.api.in) $(sqlite3.c) $(MAKEFILE)
+$(EXPORTED_FUNCTIONS.api): $(MKDIR.bld) $(EXPORTED_FUNCTIONS.api.in) $(sqlite3.c) $(MAKEFILE)
 	cat $(EXPORTED_FUNCTIONS.api.in) > $@

 ########################################################################
@@ -470,8 +544,10 @@ sqlite3-api.jses += $(dir.api)/sqlite3-api-oo1.c-pp.js
 sqlite3-api.jses += $(dir.api)/sqlite3-api-worker1.c-pp.js
 # sqlite3-vfs-helper = helper APIs for VFSes:
 sqlite3-api.jses += $(dir.api)/sqlite3-vfs-helper.c-pp.js
-# sqlite3-vtab-helper = helper APIs for VTABLEs:
-sqlite3-api.jses += $(dir.api)/sqlite3-vtab-helper.c-pp.js
+ifeq (0,$(wasm-bare-bones))
+  # sqlite3-vtab-helper = helper APIs for VTABLEs:
+  sqlite3-api.jses += $(dir.api)/sqlite3-vtab-helper.c-pp.js
+endif
 # sqlite3-vfs-opfs = the first OPFS VFS:
 sqlite3-api.jses += $(dir.api)/sqlite3-vfs-opfs.c-pp.js
 # sqlite3-vfs-opfs-sahpool = the second OPFS VFS:
@@ -520,7 +596,7 @@ $(SOAP.js.bld): $(SOAP.js)
 # preprocessed. It contains all of $(sqlite3-api.jses) but none of the
 # Emscripten-specific headers and footers.
 sqlite3-api.js.in := $(dir.tmp)/sqlite3-api.c-pp.js
-$(sqlite3-api.js.in): $(sqlite3-api.jses) $(MAKEFILE)
+$(sqlite3-api.js.in): $(MKDIR.bld) $(sqlite3-api.jses) $(MAKEFILE)
 	@echo "Making $@..."
 	@for i in $(sqlite3-api.jses); do \
 		echo "/* BEGIN FILE: $$i */"; \
@@ -687,7 +763,7 @@ emcc.jsflags += -sLLD_REPORT_UNDEFINED
 ########################################################################
 # $(sqlite3-api-build-version.js) injects the build version info into
 # the bundle in JSON form.
-$(sqlite3-api-build-version.js): $(bin.version-info) $(MAKEFILE)
+$(sqlite3-api-build-version.js): $(MKDIR.bld) $(bin.version-info) $(MAKEFILE)
 	@echo "Making $@..."
 	@{ \
    echo 'globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){'; \
@@ -703,7 +779,7 @@ $(sqlite3-api-build-version.js): $(bin.version-info) $(MAKEFILE)
 #
 # Maintenance reminder: there are awk binaries out there which do not
 # support -e SCRIPT.
-$(sqlite3-license-version.js): $(sqlite3.h) $(sqlite3-license-version-header.js) \
+$(sqlite3-license-version.js): $(MKDIR.bld) $(sqlite3.h) $(sqlite3-license-version-header.js) \
  $(MAKEFILE)
 	@echo "Making $@..."; { \
    cat $(sqlite3-license-version-header.js); \
@@ -731,7 +807,7 @@ post-jses.js := \
  $(dir.api)/post-js-header.js \
  $(sqlite3-api.js.in) \
  $(dir.api)/post-js-footer.js
-$(post-js.js.in): $(post-jses.js) $(MAKEFILE)
+$(post-js.js.in): $(MKDIR.bld) $(post-jses.js) $(MAKEFILE)
 	@echo "Making $@..."
 	@for i in $(post-jses.js); do \
 		echo "/* BEGIN FILE: $$i */"; \
@@ -740,55 +816,6 @@ $(post-js.js.in): $(post-jses.js) $(MAKEFILE)
 	done > $@


-########################################################################
-# call-make-pre-post is a $(call)able which creates rules for
-# pre-js.$(1)-$(2).js. $1 = the base name of the JS file on whose
-# behalf this pre-js is for (one of: $(JS_BUILD_NAMES)). $2 is
-# the build mode: one of $(JS_BUILD_MODES).  This sets up
-# --[extern-][pre/post]-js flags in $(pre-post-$(1)-$(2).flags) and
-# dependencies in $(pre-post-$(1)-$(2).deps). The resulting files get
-# filtered using $(C-PP.FILTER). Any flags necessary for such
-# filtering need to be set in $(c-pp.D.$(1)-$(2)) before $(call)ing
-# this.
-#
-# Maintenance note: a shell script was written to generate these rules
-# with the hope that it would make them more legible and maintainable,
-# but embedding makefile code in another language makes it even less
-# legible than having the level of $(eval) indirection which we have
-# here.
-define call-make-pre-post
-pre-post-$(1)-$(2).flags ?=
-pre-js.js.$(1)-$(2).intermediary := $$(dir.tmp)/pre-js.$(1)-$(2).intermediary.js
-pre-js.js.$(1)-$(2) := $$(dir.tmp)/pre-js.$(1)-$(2).js
-#$$(error $$(pre-js.js.$(1)-$(2).intermediary) $$(pre-js.js.$(1)-$(2)))
-$$(eval $$(call C-PP.FILTER,$$(pre-js.js.in),$$(pre-js.js.$(1)-$(2).intermediary),$$(c-pp.D.$(1)-$(2))))
-post-js.js.$(1)-$(2) := $$(dir.tmp)/post-js.$(1)-$(2).js
-$$(eval $$(call C-PP.FILTER,$$(post-js.js.in),$$(post-js.js.$(1)-$(2)),$$(c-pp.D.$(1)-$(2))))
-extern-post-js.js.$(1)-$(2) := $$(dir.tmp)/extern-post-js.$(1)-$(2).js
-$$(eval $$(call C-PP.FILTER,$$(extern-post-js.js.in),$$(extern-post-js.js.$(1)-$(2)),$$(c-pp.D.$(1)-$(2))))
-pre-post-common.flags.$(1)-$(2) := \
-  $$(pre-post-common.flags) \
-  --post-js=$$(post-js.js.$(1)-$(2)) \
-  --extern-post-js=$$(extern-post-js.js.$(1)-$(2))
-pre-post-jses.$(1)-$(2).deps := $$(pre-post-jses.deps.common) \
-  $$(post-js.js.$(1)-$(2)) $$(extern-post-js.js.$(1)-$(2))
-$$(pre-js.js.$(1)-$(2)): $$(pre-js.js.$(1)-$(2).intermediary) $$(MAKEFILE)
-	cp $$(pre-js.js.$(1)-$(2).intermediary) $$@
-	@if [ sqlite3-wasmfs = $(1) ]; then \
-		echo "delete Module[xNameOfInstantiateWasm] /*for WASMFS build*/;"; \
-	elif [ sqlite3 != $(1) ]; then \
-		echo "Module[xNameOfInstantiateWasm].uri = '$(1).wasm';"; \
-	fi >> $$@
-pre-post-$(1)-$(2).deps := \
-  $$(pre-post-jses.$(1)-$(2).deps) \
-  $$(dir.tmp)/pre-js.$(1)-$(2).js
-pre-post-$(1)-$(2).flags += \
-  $$(pre-post-common.flags.$(1)-$(2)) \
-  --pre-js=$$(dir.tmp)/pre-js.$(1)-$(2).js
-endef
-# /post-js and pre-js
-########################################################################
-
 # Undocumented Emscripten feature: if the target file extension is
 # "mjs", it defaults to ES6 module builds:
 # https://github.com/emscripten-core/emscripten/issues/14383
@@ -802,11 +829,13 @@ sqlite3-wasmfs.cfiles := $(sqlite3-wasm.cfiles)
 # difference, so we build all binaries against sqlite3-wasm.c instead
 # of building a shared copy of sqlite3-wasm.o to link against.
 ########################################################################
-# SQLITE3.xJS.EXPORT-DEFAULT is part of SQLITE3-WASMFS.xJS.RECIPE and
-# SETUP_LIB_BUILD_MODE, factored into a separate piece to avoid code
-# duplication. $1 is 1 if the build mode needs this workaround (esm,
-# bundler-friendly, node) and 0 if not (vanilla). $2 must be empty for
-# all builds except sqlite3-wasmfs.mjs, in which case it must be 1.
+
+########################################################################
+# SQLITE3.xJS.ESM-EXPORT-DEFAULT is used by mkwasmbuilds.c and the
+# wasmfs build. $1 is 1 if the build mode needs this workaround
+# (modes: esm, bundler-friendly, node) and 0 if not (vanilla). $2 must
+# be 0 for all builds except sqlite3-wasmfs.mjs, in which case it must
+# be 1.
 #
 # Reminder for ESM builds: even if we use -sEXPORT_ES6=0, emcc _still_
 # adds:
@@ -825,11 +854,11 @@ sqlite3-wasmfs.cfiles := $(sqlite3-wasm.cfiles)
 # use awk instead of sed for this.
 define SQLITE3.xJS.ESM-EXPORT-DEFAULT
 if [ x1 = x$(1) ]; then \
-		echo "Fragile workaround for emscripten/issues/18237. See SQLITE3.xJS.RECIPE."; \
+		echo "Fragile workaround for emscripten/issues/18237. See SQLITE3.xJS.ESM-EXPORT-DEFAULT."; \
 		{\
 			awk '/^export default/ && !f{f=1; next} 1' $@ > $@.tmp && mv $@.tmp $@; \
 		} || exit $$?; \
-		if [ x != x$(2) ]; then \
+		if [ x1 = x$(2) ]; then \
 			if ! grep -q '^export default' $@; then \
 				echo "Cannot find export default." 1>&2; \
 				exit 1; \
@@ -838,78 +867,6 @@ if [ x1 = x$(1) ]; then \
 fi
 endef

-########################################################################
-# extern-post-js* and extern-pre-js* are files for use with
-# Emscripten's --extern-pre-js and --extern-post-js flags.
-extern-pre-js.js := $(dir.api)/extern-pre-js.js
-extern-post-js.js.in := $(dir.api)/extern-post-js.c-pp.js
-# Emscripten flags for --[extern-][pre|post]-js=... for the
-# various builds.
-pre-post-common.flags := \
-  --extern-pre-js=$(sqlite3-license-version.js)
-# pre-post-jses.deps.* = a list of dependencies for the
-# --[extern-][pre/post]-js files.
-pre-post-jses.deps.common := $(extern-pre-js.js) $(sqlite3-license-version.js)
-
-########################################################################
-# SETUP_LIB_BUILD_MODE is a $(call)'able which sets up numerous pieces
-# for one of the build modes.
-#
-# $1 = one of: $(JS_BUILD_NAMES)
-# $2 = build mode name: one of $(JS_BUILD_MODES)
-# $3 = 1 for ESM build mode, else 0
-# $4 = resulting sqlite-api JS/MJS file
-# $5 = resulting JS/MJS file
-# $6 = -D... flags for $(bin.c-pp)
-# $7 = optional extra flags for emcc
-#
-# Maintenance reminder: be careful not to introduce spaces around args
-# ($1, $2), otherwise string concatenation will malfunction.
-#
-# Before calling this, emcc.environment.$(2) must be set to a value
-# for emcc's -sENVIRONMENT flag.
-#
-# $(cflags.$(1)) and $(cflags.$(1).$(2)) may be defined to append
-# CFLAGS to a given build mode.
-#
-# $(emcc.flags.$(1)) and $(emcc.flags.$(1).$(2)) may be defined to
-# append emcc-specific flags to a given build mode.
-define SETUP_LIB_BUILD_MODE
-$(info Setting up build [$(1)-$(2)]: $(5))
-c-pp.D.$(1)-$(2) := $(6)
-$$(eval $$(call call-make-pre-post,$(1),$(2)))
-emcc.flags.$(1).$(2) ?=
-emcc.flags.$(1).$(2) += $(7)
-$$(eval $$(call C-PP.FILTER, $$(sqlite3-api.js.in), $(4), $(6)))
-$(5): $(4) $$(MAKEFILE) $$(sqlite3-wasm.cfiles) $$(EXPORTED_FUNCTIONS.api) $$(pre-post-$(1)-$(2).deps)
-	@echo "Building $$@ ..."
-	$$(emcc.bin) -o $$@ $$(emcc_opt_full) $$(emcc.flags) \
-    $$(emcc.jsflags) \
-    -sENVIRONMENT=$$(emcc.environment.$(2)) \
-    $$(pre-post-$(1)-$(2).flags) \
-    $$(emcc.flags.$(1)) $$(emcc.flags.$(1).$(2)) \
-    $$(cflags.common) $$(SQLITE_OPT) \
-    $$(cflags.$(1)) $$(cflags.$(1).$(2)) \
-    $$(cflags.wasm_extra_init) $$(sqlite3-wasm.cfiles)
-	@$$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,$(3))
-	@dotwasm=$$(basename $$@).wasm; \
-	chmod -x $$$$dotwasm; \
-	$(maybe-wasm-strip) $$$$dotwasm; \
-	case $(2) in \
-    bundler-friendly|node) \
-      echo "Patching $$@ for $(1).wasm..."; \
-      rm -f $$$$dotwasm; \
-      dotwasm=; \
-      sed -i -e 's/$(1)-$(2).wasm/$(1).wasm/g' $$@ || exit $$$$?; \
-      ;; \
-	esac; \
-	ls -la $$$$dotwasm $$@
-all: $(5)
-#quick: $(5)
-CLEAN_FILES += $(4) $(5)
-endef
-# ^^^ /SETUP_LIB_BUILD_MODE
-########################################################################
 sqlite3-api.js := $(dir.dout)/sqlite3-api.js
 sqlite3.js := $(dir.dout)/sqlite3.js
 sqlite3-api.mjs := $(dir.dout)/sqlite3-api.mjs
@@ -918,17 +875,18 @@ sqlite3-api-bundler-friendly.mjs := $(dir.dout)/sqlite3-api-bundler-friendly.mjs
 sqlite3-bundler-friendly.mjs := $(dir.dout)/sqlite3-bundler-friendly.mjs
 sqlite3-api-node.mjs := $(dir.dout)/sqlite3-api-node.mjs
 sqlite3-node.mjs := $(dir.dout)/sqlite3-node.mjs
-#$(info $(call SETUP_LIB_BUILD_MODE,sqlite3,vanilla,0, $(sqlite3-api.js), $(sqlite3.js)))
-$(eval $(call SETUP_LIB_BUILD_MODE,sqlite3,vanilla,0,\
-         $(sqlite3-api.js), $(sqlite3.js)))
-$(eval $(call SETUP_LIB_BUILD_MODE,sqlite3,esm,1,\
-         $(sqlite3-api.mjs), $(sqlite3.mjs), -Dtarget=es6-module))
-$(eval $(call SETUP_LIB_BUILD_MODE,sqlite3,bundler-friendly,1,\
-       $(sqlite3-api-bundler-friendly.mjs),$(sqlite3-bundler-friendly.mjs),\
-       $(c-pp.D.sqlite3-esm) -Dtarget=es6-bundler-friendly))
-$(eval $(call SETUP_LIB_BUILD_MODE,sqlite3,node,1,\
-       $(sqlite3-api-node.mjs),$(sqlite3-node.mjs),\
-       $(c-pp.D.sqlite3-bundler-friendly) -Dtarget=node))
+sqlite3-api-wasmfs.mjs := $(dir.tmp)/sqlite3-api-wasmfs.mjs
+sqlite3-wasmfs.mjs    := $(dir.wasmfs)/sqlite3-wasmfs.mjs
+EXPORTED_FUNCTIONS.fiddle := $(dir.tmp)/EXPORTED_FUNCTIONS.fiddle
+ifneq (1,$(MAKING_CLEAN))
+.wasmbuilds.make: $(bin.mkwb)
+	@rm -f $@
+	$(bin.mkwb) > $@
+	@chmod -w $@
+-include .wasmbuilds.make
+endif
+DISTCLEAN_FILES += .wasmbuilds.make
+
 # The various -D... values used by *.c-pp.js include:
 #
 # -Dtarget=es6-module: for all ESM module builds
@@ -962,7 +920,7 @@ $(sqlite3.wasm): $(sqlite3.js)
 $(sqlite3.mjs): $(sqlite3.js)
 $(sqlite3-bundler-friendly.mjs): $(sqlite3.mjs)
 $(sqlite3-node.mjs): $(sqlite3.mjs)
-CLEAN_FILES += $(sqlite3.wasm)
+#CLEAN_FILES += $(sqlite3.wasm)

 ########################################################################
 # We need separate copies of certain supplementary JS files for the
@@ -1078,15 +1036,13 @@ speedtest1.exit-runtime1 := -sEXIT_RUNTIME=1
 # -sEXIT_RUNTIME=1 but we need EXIT_RUNTIME=0 for the worker-based app
 # which runs speedtest1 multiple times.

-$(EXPORTED_FUNCTIONS.speedtest1): $(EXPORTED_FUNCTIONS.api.core)
+$(EXPORTED_FUNCTIONS.speedtest1): $(MKDIR.bld) $(EXPORTED_FUNCTIONS.api.core)
 	@echo "Making $@ ..."
 	@{ echo _wasm_main; cat $(EXPORTED_FUNCTIONS.api.core); } > $@
 speedtest1.js := $(dir.dout)/speedtest1.js
 speedtest1.wasm := $(dir.dout)/speedtest1.wasm
 emcc.flags.speedtest1-vanilla := $(cflags.common) -DSQLITE_SPEEDTEST1_WASM
-
 speedtest1.cfiles := $(speedtest1.c) $(sqlite3-wasm.c)
-$(eval $(call call-make-pre-post,speedtest1,vanilla))
 $(speedtest1.js): $(MAKEFILE) $(speedtest1.cfiles) \
    $(pre-post-speedtest1-vanilla.deps) \
    $(EXPORTED_FUNCTIONS.speedtest1)
@@ -1096,7 +1052,7 @@ $(speedtest1.js): $(MAKEFILE) $(speedtest1.cfiles) \
        $(emcc.speedtest1.common) \
        $(emcc.flags.speedtest1-vanilla) $(pre-post-speedtest1-vanilla.flags) \
        $(SQLITE_OPT) \
-        -USQLITE_WASM_MINIMAL \
+        -USQLITE_WASM_BARE_BONES \
        -USQLITE_C -DSQLITE_C=$(sqlite3.canonical.c) \
        $(speedtest1.exit-runtime0) \
        -o $@ $(speedtest1.cfiles) -lm
@@ -1106,7 +1062,7 @@ $(speedtest1.js): $(MAKEFILE) $(speedtest1.cfiles) \

 speedtest1: $(speedtest1.js)
 all: speedtest1
-CLEAN_FILES += $(speedtest1.js) $(speedtest1.wasm)
+#CLEAN_FILES += $(speedtest1.js) $(speedtest1.wasm)
 # end speedtest1.js
 ########################################################################

@@ -1143,24 +1099,29 @@ quick: $(sqlite3.js)
 # painful.

 .PHONY: o0 o1 o2 o3 os oz
-o-xtra :=
-#o-xtra ?= -flto
+emcc-opt-extra :=
+#ifeq (1,$(wasm-bare-bones))
+#emcc-opt-extra += -flto
 # ^^^^ -flto can have a considerably performance boost at -O0 but
 # doubles the build time and seems to have negligible, if any, effect
 # on higher optimization levels.
+#
+# -flto does ont shrink the size of bare-bones builds by any measurable
+# amount.
+#endif
 o0: clean
 	$(MAKE) -e "emcc_opt=-O0"
 o1: clean
-	$(MAKE) -e "emcc_opt=-O1 $(o-xtra)"
+	$(MAKE) -e "emcc_opt=-O1 $(emcc-opt-extra)"
 o2: clean
-	$(MAKE) -j2 -e "emcc_opt=-O2 $(o-xtra)"
+	$(MAKE) -j2 -e "emcc_opt=-O2 $(emcc-opt-extra)"
 o3: clean
-	$(MAKE) -e "emcc_opt=-O3 $(o-xtra)"
+	$(MAKE) -e "emcc_opt=-O3 $(emcc-opt-extra)"
 os: clean
 	@echo "WARNING: -Os can result in a build with mysteriously missing pieces!"
-	$(MAKE) -e "emcc_opt=-Os $(o-xtra)"
+	$(MAKE) -e "emcc_opt=-Os $(emcc-opt-extra)"
 oz: clean
-	$(MAKE) -j2 -e "emcc_opt=-Oz $(o-xtra)"
+	$(MAKE) -j2 -e "emcc_opt=-Oz $(emcc-opt-extra)"

 ########################################################################
 # Sub-makes...
@@ -1174,7 +1135,7 @@ wasmfs.enable ?= 1
 else
 # Unconditionally enable wasmfs for [dist]clean so that the wasmfs
 # sub-make can clean up.
-wasmfs.enable ?= $(if $(filter %clean,$(MAKECMDGOALS)),1,0)
+wasmfs.enable ?= $(MAKING_CLEAN)
 endif
 ifeq (1,$(wasmfs.enable))
 # wasmfs build disabled 2022-10-19 per /chat discussion.
@@ -1253,4 +1214,3 @@ endif
 # Run local web server for the test/demo pages.
 httpd:
 	althttpd -max-age 1 -enable-sab 1 -page index.html
-
@@ -1 +0,0 @@
-_sqlite3_set_authorizer
@@ -41,7 +41,6 @@ _sqlite3_create_collation
 _sqlite3_create_collation_v2
 _sqlite3_create_function
 _sqlite3_create_function_v2
-_sqlite3_create_window_function
 _sqlite3_data_count
 _sqlite3_db_filename
 _sqlite3_db_handle
@@ -49,7 +48,6 @@ _sqlite3_db_name
 _sqlite3_db_readonly
 _sqlite3_db_status
 _sqlite3_deserialize
-_sqlite3_drop_modules
 _sqlite3_errcode
 _sqlite3_errmsg
 _sqlite3_error_offset
@@ -81,7 +79,6 @@ _sqlite3_open_v2
 _sqlite3_overload_function
 _sqlite3_prepare_v2
 _sqlite3_prepare_v3
-_sqlite3_progress_handler
 _sqlite3_randomness
 _sqlite3_realloc
 _sqlite3_realloc64
@@ -1,3 +1,12 @@
+_sqlite3_create_window_function
+_sqlite3_progress_handler
+_sqlite3_set_authorizer
+_sqlite3_preupdate_blobwrite
+_sqlite3_preupdate_count
+_sqlite3_preupdate_depth
+_sqlite3_preupdate_hook
+_sqlite3_preupdate_new
+_sqlite3_preupdate_old
 _sqlite3changegroup_add
 _sqlite3changegroup_add_strm
 _sqlite3changegroup_delete
@@ -40,3 +49,15 @@ _sqlite3session_object_config
 _sqlite3session_patchset
 _sqlite3session_patchset_strm
 _sqlite3session_table_filter
+_sqlite3_create_module
+_sqlite3_create_module_v2
+_sqlite3_declare_vtab
+_sqlite3_drop_modules
+_sqlite3_vtab_collation
+_sqlite3_vtab_distinct
+_sqlite3_vtab_in
+_sqlite3_vtab_in_first
+_sqlite3_vtab_in_next
+_sqlite3_vtab_nochange
+_sqlite3_vtab_on_conflict
+_sqlite3_vtab_rhs_value
@@ -1,6 +0,0 @@
-_sqlite3_preupdate_blobwrite
-_sqlite3_preupdate_count
-_sqlite3_preupdate_depth
-_sqlite3_preupdate_hook
-_sqlite3_preupdate_new
-_sqlite3_preupdate_old
@@ -1,11 +0,0 @@
-_sqlite3_create_module
-_sqlite3_create_module_v2
-_sqlite3_declare_vtab
-_sqlite3_vtab_collation
-_sqlite3_vtab_distinct
-_sqlite3_vtab_in
-_sqlite3_vtab_in_first
-_sqlite3_vtab_in_next
-_sqlite3_vtab_nochange
-_sqlite3_vtab_on_conflict
-_sqlite3_vtab_rhs_value
@@ -48,7 +48,7 @@ Module['locateFile'] = function(path, prefix) {
  }else{
    theFile = prefix + path;
  }
-  sqlite3InitModuleState.debugModule(
+  this.debugModule(
    "locateFile(",arguments[0], ',', arguments[1],")",
    'sqlite3InitModuleState.scriptDir =',this.scriptDir,
    'up.entries() =',Array.from(up.entries()),
@@ -59,6 +59,7 @@ Module['locateFile'] = function(path, prefix) {
 }.bind(sqlite3InitModuleState);
 //#endif ifnot target=es6-bundler-friendly

+//#if custom-Module.instantiateModule
 /**
   Bug warning: a custom Module.instantiateWasm() does not work
   in WASMFS builds:
@@ -67,7 +68,15 @@ Module['locateFile'] = function(path, prefix) {

   In such builds we must disable this.
 */
-const xNameOfInstantiateWasm = false
+const xNameOfInstantiateWasm =
+//#if wasmfs
+  false
+//#else
+  true /* This works, but it does not have the testing coverage in the
+          wild which Emscripten's default impl does, so we'll save
+          this option until we really need a custom
+          Module.instantiateWasm() */
+//#endif
      ? 'instantiateWasm'
      : 'emscripten-bug-17951';
 Module[xNameOfInstantiateWasm] = function callee(imports,onSuccess){
@@ -80,6 +89,7 @@ Module[xNameOfInstantiateWasm] = function callee(imports,onSuccess){
  sqlite3InitModuleState.debugModule(
    "instantiateWasm() uri =", uri
  );
+  //console.warn("Custom instantiateModule",uri);
  const wfetch = ()=>fetch(uri, {credentials: 'same-origin'});
  const loadWasm = WebAssembly.instantiateStreaming
        ? async ()=>{
@@ -105,6 +115,7 @@ Module[xNameOfInstantiateWasm] = function callee(imports,onSuccess){
  scripts.
 */
 Module[xNameOfInstantiateWasm].uri = 'sqlite3.wasm';
+//#endif custom-Module.instantiateModule
 /* END FILE: api/pre-js.js, noting that the build process may add a
   line after this one to change the above .uri to a build-specific
   one. */
@@ -136,20 +136,12 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
    ["sqlite3_compileoption_used", "int", "string"],
    ["sqlite3_complete", "int", "string:flexible"],
    ["sqlite3_context_db_handle", "sqlite3*", "sqlite3_context*"],
-
+    /* sqlite3_create_collation() and sqlite3_create_collation_v2()
+       use hand-written bindings to simplify passing of the callback
+       function. */
    /* sqlite3_create_function(), sqlite3_create_function_v2(), and
       sqlite3_create_window_function() use hand-written bindings to
       simplify handling of their function-type arguments. */
-    /* sqlite3_create_collation() and sqlite3_create_collation_v2()
-       use hand-written bindings to simplify passing of the callback
-       function.
-      ["sqlite3_create_collation", "int",
-     "sqlite3*", "string", "int",//SQLITE_UTF8 is the only legal value
-     "*", "*"],
-    ["sqlite3_create_collation_v2", "int",
-     "sqlite3*", "string", "int",//SQLITE_UTF8 is the only legal value
-     "*", "*", "*"],
-    */
    ["sqlite3_data_count", "int", "sqlite3_stmt*"],
    ["sqlite3_db_filename", "string", "sqlite3*", "string"],
    ["sqlite3_db_handle", "sqlite3*", "sqlite3_stmt*"],
@@ -211,14 +203,6 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
       for those, depending on how their SQL argument is provided. */
    /* sqlite3_randomness() uses a hand-written wrapper to extend
       the range of supported argument types. */
-    ["sqlite3_progress_handler", undefined, [
-      "sqlite3*", "int", new wasm.xWrap.FuncPtrAdapter({
-        name: 'xProgressHandler',
-        signature: 'i(p)',
-        bindScope: 'context',
-        contextKey: (argv,argIndex)=>argv[0/* sqlite3* */]
-      }), "*"
-    ]],
    ["sqlite3_realloc", "*","*","int"],
    ["sqlite3_reset", "int", "sqlite3_stmt*"],
    /* sqlite3_reset_auto_extension() has a hand-written binding. */
@@ -303,6 +287,19 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
    ["sqlite3_vfs_unregister", "int", "sqlite3_vfs*"]
  ]/*wasm.bindingSignatures*/;

+  if( !!wasm.exports.sqlite3_progress_handler ){
+    wasm.bindingSignatures.push(
+      ["sqlite3_progress_handler", undefined, [
+        "sqlite3*", "int", new wasm.xWrap.FuncPtrAdapter({
+          name: 'xProgressHandler',
+          signature: 'i(p)',
+          bindScope: 'context',
+          contextKey: (argv,argIndex)=>argv[0/* sqlite3* */]
+        }), "*"
+      ]]
+    );
+  }
+
  if( !!wasm.exports.sqlite3_stmt_explain ){
    wasm.bindingSignatures.push(
      ["sqlite3_stmt_explain", "int", "sqlite3_stmt*", "int"],
@@ -336,7 +333,7 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
  }/* sqlite3_set_authorizer() */

  if(false && wasm.compileOptionUsed('SQLITE_ENABLE_NORMALIZE')){
-    /* ^^^ "the problem" is that this is an option feature and the
+    /* ^^^ "the problem" is that this is an optional feature and the
       build-time function-export list does not currently take
       optional features into account. */
    wasm.bindingSignatures.push(["sqlite3_normalized_sql", "string", "sqlite3_stmt*"]);
@@ -385,7 +382,6 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
       of this, the canonical builds of sqlite3.wasm/js guarantee that
       sqlite3.wasm.alloc() and friends use those allocators. Custom builds
       may not guarantee that, however. */,
-    ["sqlite3_drop_modules", "int", ["sqlite3*", "**"]],
    ["sqlite3_last_insert_rowid", "i64", ["sqlite3*"]],
    ["sqlite3_malloc64", "*","i64"],
    ["sqlite3_msize", "i64", "*"],
@@ -422,6 +418,7 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
      ["sqlite3_create_module_v2", "int",
       ["sqlite3*","string","sqlite3_module*","*","*"]],
      ["sqlite3_declare_vtab", "int", ["sqlite3*", "string:flexible"]],
+      ["sqlite3_drop_modules", "int", ["sqlite3*", "**"]],
      ["sqlite3_vtab_collation","string","sqlite3_index_info*","int"],
      ["sqlite3_vtab_distinct","int", "sqlite3_index_info*"],
      ["sqlite3_vtab_in","int", "sqlite3_index_info*", "int", "int"],
@@ -950,7 +947,8 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){

  /** Code duplication reducer for functions which take an encoding
      argument and require SQLITE_UTF8.  Sets the db error code to
-      SQLITE_FORMAT and returns that code. */
+      SQLITE_FORMAT, installs a descriptive error message,
+      and returns SQLITE_FORMAT. */
  const __errEncoding = (pDb)=>{
    return util.sqlite3__wasm_db_error(
      pDb, capi.SQLITE_FORMAT, "SQLITE_UTF8 is the only supported encoding."
@@ -1000,11 +998,13 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
    this._addUDF(pDb, name, arity, m.udf);
  };

-  __dbCleanupMap.addWindowFunc = function(pDb, name, arity){
-    const m = __dbCleanupMap(pDb, 1);
-    if(!m.wudf) m.wudf = new Map;
-    this._addUDF(pDb, name, arity, m.wudf);
-  };
+  if( wasm.exports.sqlite3_create_window_function ){
+    __dbCleanupMap.addWindowFunc = function(pDb, name, arity){
+      const m = __dbCleanupMap(pDb, 1);
+      if(!m.wudf) m.wudf = new Map;
+      this._addUDF(pDb, name, arity, m.wudf);
+    };
+  }

  /**
     Intended to be called _only_ from sqlite3_close_v2(),
@@ -1273,17 +1273,20 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
      ]
    );

-    const __sqlite3CreateWindowFunction = wasm.xWrap(
-      "sqlite3_create_window_function", "int", [
-        "sqlite3*", "string"/*funcName*/, "int"/*nArg*/,
-        "int"/*eTextRep*/, "*"/*pApp*/,
-        new wasm.xWrap.FuncPtrAdapter({name: 'xStep', ...__cfProxy.xInverseAndStep}),
-        new wasm.xWrap.FuncPtrAdapter({name: 'xFinal', ...__cfProxy.xFinalAndValue}),
-        new wasm.xWrap.FuncPtrAdapter({name: 'xValue', ...__cfProxy.xFinalAndValue}),
-        new wasm.xWrap.FuncPtrAdapter({name: 'xInverse', ...__cfProxy.xInverseAndStep}),
-        new wasm.xWrap.FuncPtrAdapter({name: 'xDestroy', ...__cfProxy.xDestroy})
-      ]
-    );
+    const __sqlite3CreateWindowFunction =
+          wasm.exports.sqlite3_create_window_function
+          ? wasm.xWrap(
+            "sqlite3_create_window_function", "int", [
+              "sqlite3*", "string"/*funcName*/, "int"/*nArg*/,
+              "int"/*eTextRep*/, "*"/*pApp*/,
+              new wasm.xWrap.FuncPtrAdapter({name: 'xStep', ...__cfProxy.xInverseAndStep}),
+              new wasm.xWrap.FuncPtrAdapter({name: 'xFinal', ...__cfProxy.xFinalAndValue}),
+              new wasm.xWrap.FuncPtrAdapter({name: 'xValue', ...__cfProxy.xFinalAndValue}),
+              new wasm.xWrap.FuncPtrAdapter({name: 'xInverse', ...__cfProxy.xInverseAndStep}),
+              new wasm.xWrap.FuncPtrAdapter({name: 'xDestroy', ...__cfProxy.xDestroy})
+            ]
+          )
+          : undefined;

    /* Documented in the api object's initializer. */
    capi.sqlite3_create_function_v2 = function f(
@@ -1328,61 +1331,71 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
    };

    /* Documented in the api object's initializer. */
-    capi.sqlite3_create_window_function = function f(
-      pDb, funcName, nArg, eTextRep, pApp,
-      xStep,   //void (*xStep)(sqlite3_context*,int,sqlite3_value**)
-      xFinal,  //void (*xFinal)(sqlite3_context*)
-      xValue,  //void (*xValue)(sqlite3_context*)
-      xInverse,//void (*xInverse)(sqlite3_context*,int,sqlite3_value**)
-      xDestroy //void (*xDestroy)(void*)
-    ){
-      if( f.length!==arguments.length ){
-        return __dbArgcMismatch(pDb,"sqlite3_create_window_function",f.length);
-      }else if( 0 === (eTextRep & 0xf) ){
-        eTextRep |= capi.SQLITE_UTF8;
-      }else if( capi.SQLITE_UTF8 !== (eTextRep & 0xf) ){
-        return __errEncoding(pDb);
-      }
-      try{
-        const rc = __sqlite3CreateWindowFunction(pDb, funcName, nArg, eTextRep,
-                                                 pApp, xStep, xFinal, xValue,
-                                                 xInverse, xDestroy);
-        if(0===rc && (xStep instanceof Function
-                      || xFinal instanceof Function
-                      || xValue instanceof Function
-                      || xInverse instanceof Function
-                      || xDestroy instanceof Function)){
-          __dbCleanupMap.addWindowFunc(pDb, funcName, nArg);
+    if( __sqlite3CreateWindowFunction ){
+      capi.sqlite3_create_window_function = function f(
+        pDb, funcName, nArg, eTextRep, pApp,
+        xStep,   //void (*xStep)(sqlite3_context*,int,sqlite3_value**)
+        xFinal,  //void (*xFinal)(sqlite3_context*)
+        xValue,  //void (*xValue)(sqlite3_context*)
+        xInverse,//void (*xInverse)(sqlite3_context*,int,sqlite3_value**)
+        xDestroy //void (*xDestroy)(void*)
+      ){
+        if( f.length!==arguments.length ){
+          return __dbArgcMismatch(pDb,"sqlite3_create_window_function",f.length);
+        }else if( 0 === (eTextRep & 0xf) ){
+          eTextRep |= capi.SQLITE_UTF8;
+        }else if( capi.SQLITE_UTF8 !== (eTextRep & 0xf) ){
+          return __errEncoding(pDb);
        }
-        return rc;
-      }catch(e){
-        console.error("sqlite3_create_window_function() setup threw:",e);
-        return util.sqlite3__wasm_db_error(pDb, e, "Creation of UDF threw: "+e);
-      }
-    };
+        try{
+          const rc = __sqlite3CreateWindowFunction(pDb, funcName, nArg, eTextRep,
+                                                   pApp, xStep, xFinal, xValue,
+                                                   xInverse, xDestroy);
+          if(0===rc && (xStep instanceof Function
+                        || xFinal instanceof Function
+                        || xValue instanceof Function
+                        || xInverse instanceof Function
+                        || xDestroy instanceof Function)){
+            __dbCleanupMap.addWindowFunc(pDb, funcName, nArg);
+          }
+          return rc;
+        }catch(e){
+          console.error("sqlite3_create_window_function() setup threw:",e);
+          return util.sqlite3__wasm_db_error(pDb, e, "Creation of UDF threw: "+e);
+        }
+      };
+    }else{
+      delete capi.sqlite3_create_window_function;
+    }
    /**
       A _deprecated_ alias for capi.sqlite3_result_js() which
       predates the addition of that function in the public API.
    */
    capi.sqlite3_create_function_v2.udfSetResult =
-      capi.sqlite3_create_function.udfSetResult =
+      capi.sqlite3_create_function.udfSetResult = capi.sqlite3_result_js;
+    if(capi.sqlite3_create_window_function){
      capi.sqlite3_create_window_function.udfSetResult = capi.sqlite3_result_js;
+    }

    /**
       A _deprecated_ alias for capi.sqlite3_values_to_js() which
       predates the addition of that function in the public API.
    */
    capi.sqlite3_create_function_v2.udfConvertArgs =
-      capi.sqlite3_create_function.udfConvertArgs =
+      capi.sqlite3_create_function.udfConvertArgs = capi.sqlite3_values_to_js;
+    if(capi.sqlite3_create_window_function){
      capi.sqlite3_create_window_function.udfConvertArgs = capi.sqlite3_values_to_js;
+    }

    /**
       A _deprecated_ alias for capi.sqlite3_result_error_js() which
       predates the addition of that function in the public API.
    */
    capi.sqlite3_create_function_v2.udfSetError =
-      capi.sqlite3_create_function.udfSetError =
+      capi.sqlite3_create_function.udfSetError = capi.sqlite3_result_error_js;
+    if(capi.sqlite3_create_window_function){
      capi.sqlite3_create_window_function.udfSetError = capi.sqlite3_result_error_js;
+    }

  }/*sqlite3_create_function_v2() and sqlite3_create_window_function() proxies*/;

@@ -14,16 +14,17 @@
 */
 #define SQLITE_WASM
 #ifdef SQLITE_WASM_ENABLE_C_TESTS
+#  undef SQLITE_WASM_ENABLE_C_TESTS
+#  define SQLITE_WASM_ENABLE_C_TESTS 1
 /*
-** Code blocked off by SQLITE_WASM_TESTS is intended solely for use in
-** unit/regression testing. They may be safely omitted from
+** Code blocked off by SQLITE_WASM_ENABLE_C_TESTS is intended solely
+** for use in unit/regression testing. They may be safely omitted from
 ** client-side builds. The main unit test script, tester1.js, will
 ** skip related tests if it doesn't find the corresponding functions
 ** in the WASM exports.
 */
-#  define SQLITE_WASM_TESTS 1
 #else
-#  define SQLITE_WASM_TESTS 0
+#  define SQLITE_WASM_ENABLE_C_TESTS 0
 #endif

 /*
@@ -92,60 +93,18 @@
 #undef SQLITE_ENABLE_API_ARMOR
 #define SQLITE_ENABLE_API_ARMOR 1

-#ifndef SQLITE_ENABLE_BYTECODE_VTAB
-#  define SQLITE_ENABLE_BYTECODE_VTAB 1
-#endif
-#ifndef SQLITE_ENABLE_DBPAGE_VTAB
-#  define SQLITE_ENABLE_DBPAGE_VTAB 1
-#endif
-#ifndef SQLITE_ENABLE_DBSTAT_VTAB
-#  define SQLITE_ENABLE_DBSTAT_VTAB 1
-#endif
-#ifndef SQLITE_ENABLE_EXPLAIN_COMMENTS
-#  define SQLITE_ENABLE_EXPLAIN_COMMENTS 1
-#endif
-#ifndef SQLITE_ENABLE_FTS5
-#  define SQLITE_ENABLE_FTS5 1
-#endif
-#ifndef SQLITE_ENABLE_MATH_FUNCTIONS
-#  define SQLITE_ENABLE_MATH_FUNCTIONS 1
-#endif
-#ifndef SQLITE_ENABLE_OFFSET_SQL_FUNC
-#  define SQLITE_ENABLE_OFFSET_SQL_FUNC 1
-#endif
-#ifndef SQLITE_ENABLE_PREUPDATE_HOOK
-#  define SQLITE_ENABLE_PREUPDATE_HOOK 1 /*required by session extension*/
-#endif
-#ifndef SQLITE_ENABLE_RTREE
-#  define SQLITE_ENABLE_RTREE 1
-#endif
-#ifndef SQLITE_ENABLE_SESSION
-#  define SQLITE_ENABLE_SESSION 1
-#endif
-#ifndef SQLITE_ENABLE_STMTVTAB
-#  define SQLITE_ENABLE_STMTVTAB 1
-#endif
-#ifndef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
-#  define SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
-#endif
-
 /**********************************************************************/
 /* SQLITE_O... */
-#ifndef SQLITE_OMIT_DEPRECATED
-# define SQLITE_OMIT_DEPRECATED 1
-#endif
-#ifndef SQLITE_OMIT_LOAD_EXTENSION
-# define SQLITE_OMIT_LOAD_EXTENSION 1
-#endif
-#ifndef SQLITE_OMIT_SHARED_CACHE
-# define SQLITE_OMIT_SHARED_CACHE 1
-#endif
-#ifndef SQLITE_OMIT_UTF16
-# define SQLITE_OMIT_UTF16 1
-#endif
-#ifndef SQLITE_OS_KV_OPTIONAL
-# define SQLITE_OS_KV_OPTIONAL 1
-#endif
+#undef SQLITE_OMIT_DEPRECATED
+#define SQLITE_OMIT_DEPRECATED 1
+#undef SQLITE_OMIT_LOAD_EXTENSION
+#define SQLITE_OMIT_LOAD_EXTENSION 1
+#undef SQLITE_OMIT_SHARED_CACHE
+#define SQLITE_OMIT_SHARED_CACHE 1
+#undef SQLITE_OMIT_UTF16
+#define SQLITE_OMIT_UTF16 1
+#undef SQLITE_OS_KV_OPTIONAL
+#define SQLITE_OS_KV_OPTIONAL 1

 /**********************************************************************/
 /* SQLITE_S... */
@@ -173,45 +132,64 @@
 #endif

 /*
-** If SQLITE_WASM_MINIMAL is defined, undefine most of the ENABLE
+** If SQLITE_WASM_BARE_BONES is defined, undefine most of the ENABLE
 ** macros.
 */
-#ifdef SQLITE_WASM_MINIMAL
-#  undef SQLITE_ENABLE_DBPAGE_VTAB
-#  undef SQLITE_ENABLE_DBSTAT_VTAB
-#  undef SQLITE_ENABLE_EXPLAIN_COMMENTS
-#  undef SQLITE_ENABLE_FTS5
-#  undef SQLITE_ENABLE_OFFSET_SQL_FUNC
-#  undef SQLITE_ENABLE_PREUPDATE_HOOK
-#  undef SQLITE_ENABLE_RTREE
-#  undef SQLITE_ENABLE_SESSION
-#  undef SQLITE_ENABLE_STMTVTAB
-#  undef SQLITE_OMIT_AUTHORIZATION
+#ifdef SQLITE_WASM_BARE_BONES
+#  undef  SQLITE_ENABLE_DBPAGE_VTAB
+#  undef  SQLITE_ENABLE_DBSTAT_VTAB
+#  undef  SQLITE_ENABLE_EXPLAIN_COMMENTS
+#  undef  SQLITE_ENABLE_FTS5
+#  undef  SQLITE_ENABLE_OFFSET_SQL_FUNC
+#  undef  SQLITE_ENABLE_PREUPDATE_HOOK
+#  undef  SQLITE_ENABLE_RTREE
+#  undef  SQLITE_ENABLE_SESSION
+#  undef  SQLITE_ENABLE_STMTVTAB
+#  undef  SQLITE_OMIT_AUTHORIZATION
 #  define SQLITE_OMIT_AUTHORIZATION
-/*Reminder re. custom sqlite3.c:
+#  undef  SQLITE_OMIT_GET_TABLE
+#  define SQLITE_OMIT_GET_TABLE
+#  undef  SQLITE_OMIT_INCRBLOB
+#  define SQLITE_OMIT_INCRBLOB
+#  undef  SQLITE_OMIT_INTROSPECTION_PRAGMAS
+#  define SQLITE_OMIT_INTROSPECTION_PRAGMAS
+#  undef  SQLITE_OMIT_JSON
+#  define SQLITE_OMIT_JSON
+#  undef  SQLITE_OMIT_PROGRESS_CALLBACK
+#  define SQLITE_OMIT_PROGRESS_CALLBACK
+#  undef  SQLITE_OMIT_WAL
+#  define SQLITE_OMIT_WAL
+/*
+  The following OMITs do not work with the standard amalgamation, so
+  require a custom build:

  fossil clean -x
  ./configure
-  OPTS='-DSQLITE_OMIT_VIRTUALTABLE -DSQLITE_OMIT_EXPLAIN -DSQLITE_OMIT_TRIGGER' make -e sqlite3
-*/
-/*Requires a custom sqlite3.c
-#  undef SQLITE_OMIT_TRIGGER
-#  define SQLITE_OMIT_TRIGGER
-*/
-/*TODO (requires build tweaks)
-#  undef SQLITE_OMIT_WINDOWFUNC
-#  define SQLITE_OMIT_WINDOWFUNC
-*/
-/*Requires a custom sqlite3.c
+  OPTS='...' make -e sqlite3
+
+  where ... has a -D... for each of the following OMIT flags:
+
 #  undef SQLITE_OMIT_EXPLAIN
 #  define SQLITE_OMIT_EXPLAIN
-*/
-/*Requires a custom sqlite3.c
+
+#  undef SQLITE_OMIT_TRIGGER
+#  define SQLITE_OMIT_TRIGGER
+
 #  undef SQLITE_OMIT_VIRTUALTABLE
 #  define SQLITE_OMIT_VIRTUALTABLE
+
+#  undef SQLITE_OMIT_WINDOWFUNC
+#  define SQLITE_OMIT_WINDOWFUNC
+
+  As of this writing (2024-07-25), such a build fails in various ways
+  for as-yet-unknown reasons.
 */
-#  undef SQLITE_OMIT_JSON
-#  define SQLITE_OMIT_JSON
+#endif
+
+#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_WASM_BARE_BONES)
+#  define SQLITE_WASM_HAS_VTAB 1
+#else
+#  define SQLITE_WASM_HAS_VTAB 0
 #endif

 #include <assert.h>
@@ -264,10 +242,6 @@
 #undef INC__STRINGIFY
 #undef SQLITE_C

-#if defined(__EMSCRIPTEN__)
-#  include <emscripten/console.h>
-#endif
-
 #if 0
 /*
 ** An EXPERIMENT in implementing a stack-based allocator analog to
@@ -412,7 +386,7 @@ int sqlite3__wasm_db_error(sqlite3*db, int err_code, const char *zMsg){
  return err_code;
 }

-#if SQLITE_WASM_TESTS
+#if SQLITE_WASM_ENABLE_C_TESTS
 struct WasmTestStruct {
  int v4;
  void * ppV;
@@ -432,7 +406,7 @@ void sqlite3__wasm_test_struct(WasmTestStruct * s){
  }
  return;
 }
-#endif /* SQLITE_WASM_TESTS */
+#endif /* SQLITE_WASM_ENABLE_C_TESTS */

 /*
 ** This function is NOT part of the sqlite3 public API. It is strictly
@@ -967,7 +941,7 @@ const char * sqlite3__wasm_enum_json(void){
  } _DefGroup;

  DefGroup(vtab) {
-#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_WASM_MINIMAL)
+#if SQLITE_WASM_HAS_VTAB
    DefInt(SQLITE_INDEX_SCAN_UNIQUE);
    DefInt(SQLITE_INDEX_CONSTRAINT_EQ);
    DefInt(SQLITE_INDEX_CONSTRAINT_GT);
@@ -995,7 +969,7 @@ const char * sqlite3__wasm_enum_json(void){
    DefInt(SQLITE_FAIL);
    //DefInt(SQLITE_ABORT); // Also an error code
    DefInt(SQLITE_REPLACE);
-#endif /*!SQLITE_OMIT_VIRTUALTABLE*/
+#endif /*SQLITE_WASM_HAS_VTAB*/
  } _DefGroup;

 #undef DefGroup
@@ -1110,6 +1084,7 @@ const char * sqlite3__wasm_enum_json(void){
 #undef CurrentStruct


+#if SQLITE_WASM_HAS_VTAB
 #define CurrentStruct sqlite3_vtab
    StructBinder {
      M(pModule, "p");
@@ -1155,7 +1130,6 @@ const char * sqlite3__wasm_enum_json(void){
    } _StructBinder;
 #undef CurrentStruct

-#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_WASM_MINIMAL)
    /**
     ** Workaround: in order to map the various inner structs from
     ** sqlite3_index_info, we have to uplift those into constructs we
@@ -1232,9 +1206,9 @@ const char * sqlite3__wasm_enum_json(void){
    } _StructBinder;
 #undef CurrentStruct

-#endif /*!SQLITE_OMIT_VIRTUALTABLE*/
+#endif /*SQLITE_WASM_HAS_VTAB*/

-#if SQLITE_WASM_TESTS
+#if SQLITE_WASM_ENABLE_C_TESTS
 #define CurrentStruct WasmTestStruct
    StructBinder {
      M(v4,    "i");
@@ -1244,7 +1218,7 @@ const char * sqlite3__wasm_enum_json(void){
      M(xFunc, "v(p)");
    } _StructBinder;
 #undef CurrentStruct
-#endif
+#endif /*SQLITE_WASM_ENABLE_C_TESTS*/

  } out( "]"/*structs*/);

@@ -1603,7 +1577,7 @@ sqlite3_kvvfs_methods * sqlite3__wasm_kvvfs_methods(void){
  return &sqlite3KvvfsMethods;
 }

-#if !defined(SQLITE_OMIT_VIRTUALTABLE) && !defined(SQLITE_WASM_MINIMAL)
+#if SQLITE_WASM_HAS_VTAB
 /*
 ** This function is NOT part of the sqlite3 public API. It is strictly
 ** for use by the sqlite project's own JS/WASM bindings.
@@ -1626,7 +1600,7 @@ int sqlite3__wasm_vtab_config(sqlite3 *pDb, int op, int arg){
    return SQLITE_MISUSE;
  }
 }
-#endif /*!SQLITE_OMIT_VIRTUALTABLE*/
+#endif /*SQLITE_WASM_HAS_VTAB*/

 /*
 ** This function is NOT part of the sqlite3 public API. It is strictly
@@ -1750,6 +1724,7 @@ char * sqlite3__wasm_qfmt_token(char *z, int addQuotes){
 }

 #if defined(__EMSCRIPTEN__) && defined(SQLITE_ENABLE_WASMFS)
+#include <emscripten/console.h>
 #include <emscripten/wasmfs.h>

 /*
@@ -1801,7 +1776,7 @@ int sqlite3__wasm_init_wasmfs(const char *zUnused){
 }
 #endif /* __EMSCRIPTEN__ && SQLITE_ENABLE_WASMFS */

-#if SQLITE_WASM_TESTS
+#if SQLITE_WASM_ENABLE_C_TESTS

 SQLITE_WASM_EXPORT
 int sqlite3__wasm_test_intptr(int * p){
@@ -1967,6 +1942,9 @@ int sqlite3__wasm_SQLTester_strglob(const char *zGlob, const char *z){
 return !sqlite3__wasm_SQLTester_strnotglob(zGlob, z);
 }

-#endif /* SQLITE_WASM_TESTS */
+#endif /* SQLITE_WASM_ENABLE_C_TESTS */

 #undef SQLITE_WASM_EXPORT
+#undef SQLITE_WASM_HAS_VTAB
+#undef SQLITE_WASM_BARE_BONES
+#undef SQLITE_WASM_ENABLE_C_TESTS
@@ -1,7 +1,8 @@
 /*
 ** 2022-11-12:
 **
-** In place of a legal notice, here is a blessing:
+** 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.
@@ -1507,7 +1508,7 @@ int main(int argc, char const * const * argv){
    }
    ISFLAG("debug"){
      ++g.doDebug;
-    }else if(!zInfile){
+    }else if(!zInfile && '-'!=argv[i][0]){
      goto do_infile;
    }else{
      fatal("Unhandled flag: %s", argv[i]);
@@ -7,21 +7,23 @@ MAKEFILE.fiddle := $(lastword $(MAKEFILE_LIST))

 ########################################################################
 # shell.c and its build flags...
-make-np-0 := make -C  $(dir.top) -n -p
-make-np-1 := sed -e 's/(TOP)/(dir.top)/g'
-# Extract SHELL_OPT and SHELL_DEP from the top-most makefile and import
-# them as vars here...
-$(eval $(shell $(make-np-0) | grep -e '^SHELL_OPT ' | $(make-np-1)))
-$(eval $(shell $(make-np-0) | grep -e '^SHELL_DEP ' | $(make-np-1)))
-# ^^^ can't do that in 1 invocation b/c newlines get stripped
-ifeq (,$(SHELL_OPT))
-$(error Could not parse SHELL_OPT from $(dir.top)/Makefile.)
-endif
-ifeq (,$(SHELL_DEP))
-$(error Could not parse SHELL_DEP from $(dir.top)/Makefile.)
-endif
-$(dir.top)/shell.c: $(SHELL_DEP) $(dir.top)/tool/mkshellc.tcl $(sqlite3.c)
+ifneq (1,$(MAKING_CLEAN))
+  make-np-0 := make -C  $(dir.top) -n -p
+  make-np-1 := sed -e 's/(TOP)/(dir.top)/g'
+  # Extract SHELL_OPT and SHELL_DEP from the top-most makefile and import
+  # them as vars here...
+  $(eval $(shell $(make-np-0) | grep -e '^SHELL_OPT ' | $(make-np-1)))
+  $(eval $(shell $(make-np-0) | grep -e '^SHELL_DEP ' | $(make-np-1)))
+  # ^^^ can't do that in 1 invocation b/c newlines get stripped
+  ifeq (,$(SHELL_OPT))
+  $(error Could not parse SHELL_OPT from $(dir.top)/Makefile.)
+  endif
+  ifeq (,$(SHELL_DEP))
+  $(error Could not parse SHELL_DEP from $(dir.top)/Makefile.)
+  endif
+$(dir.top)/shell.c: $(SHELL_DEP) $(dir.tool)/mkshellc.tcl $(sqlite3.c)
 	$(MAKE) -C $(dir.top) shell.c
+endif
 # /shell.c
 ########################################################################

@@ -41,10 +43,11 @@ fiddle.emcc-flags = \
  $(emcc.exportedRuntimeMethods) \
  -sEXPORTED_FUNCTIONS=@$(abspath $(EXPORTED_FUNCTIONS.fiddle)) \
  -sEXPORTED_RUNTIME_METHODS=FS,wasmMemory \
-  $(SQLITE_OPT) $(SHELL_OPT) \
-  -USQLITE_WASM_MINIMAL \
+  $(SQLITE_OPT.full-featured) \
+  $(SQLITE_OPT.common) \
+  $(SHELL_OPT) \
+  -USQLITE_WASM_BARE_BONES \
  -DSQLITE_SHELL_FIDDLE
-# -D_POSIX_C_SOURCE is needed for strdup() with emcc

 # Flags specifically for debug builds of fiddle. Performance suffers
 # greatly in debug builds.
@@ -55,52 +58,22 @@ fiddle.emcc-flags.debug := $(fiddle.emcc-flags) \

 fiddle.EXPORTED_FUNCTIONS.in := \
    EXPORTED_FUNCTIONS.fiddle.in \
-    $(EXPORTED_FUNCTIONS.api)
+    $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-core \
+    $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-extras

-$(EXPORTED_FUNCTIONS.fiddle): $(fiddle.EXPORTED_FUNCTIONS.in) $(MAKEFILE.fiddle)
+$(EXPORTED_FUNCTIONS.fiddle): $(MKDIR.bld) $(fiddle.EXPORTED_FUNCTIONS.in) \
+    $(MAKEFILE.fiddle)
 	sort -u $(fiddle.EXPORTED_FUNCTIONS.in) > $@

 fiddle.cses := $(dir.top)/shell.c $(sqlite3-wasm.c)
-$(eval $(call call-make-pre-post,fiddle-module,vanilla))

-########################################################################
-# emit rules for one of the two fiddle builds. $1 must be
-# either $(dir.fiddle) or $(dir.fiddle-debug). $2 must be empty
-# in the former case and .debug in the latter.
-define make-fiddle-rules
-fiddle-module.js$(2) := $(1)/fiddle-module.js
-fiddle-module.wasm$(2) := $$(subst .js,.wasm,$$(fiddle-module.js$(2)))
-$$(fiddle-module.js$(2)): $$(MAKEFILE) $$(MAKEFILE.fiddle) \
-    $$(EXPORTED_FUNCTIONS.fiddle) \
-    $$(fiddle.cses) $$(pre-post-fiddle-module-vanilla.deps) $$(SOAP.js)
-	@test -d "$$(dir $$@)" || mkdir -p "$$(dir $$@)"
-	$$(emcc.bin) -o $$@ $$(fiddle.emcc-flags$(2)) \
-    $$(pre-post-fiddle-module-vanilla.flags) \
-    $$(fiddle.cses)
-	$$(maybe-wasm-strip) $$(fiddle-module.wasm$(2))
-	@cp -p $$(SOAP.js) $$(dir $$@)
-	@if [[ x.debug = x$(2) ]]; then \
-		cp -p $$(dir.fiddle)/index.html \
-			$$(dir.fiddle)/fiddle.js \
-			$$(dir.fiddle)/fiddle-worker.js \
-			$$(dir $$@)/.; \
-	fi
-	@for i in $(1)/*.*js $(1)/*.html $(1)/*.wasm; do \
-		test -f $$$${i} || continue; \
-		gzip < $$$${i} > $$$${i}.gz; \
-	done
-fiddle$(2): $$(fiddle-module.js$(2)) $(1)/fiddle.js.gz
-endef
-
-$(eval $(call make-fiddle-rules,$(dir.fiddle)))
-$(eval $(call make-fiddle-rules,$(dir.fiddle-debug),.debug))
 fiddle: $(fiddle-module.js) $(fiddle-module.js.debug)
 fiddle.debug: $(fiddle-module.js.debug)

 clean: clean-fiddle
 clean-fiddle:
-	rm -f $(fiddle-module.js) \
-        $(fiddle-module.wasm) \
+	rm -f $(dir.fiddle)/fiddle-module.js \
+        $(dir.fiddle)/*.wasm \
        $(dir.fiddle)/sqlite3-opfs-*.js \
        $(dir.fiddle)/*.gz \
        EXPORTED_FUNCTIONS.fiddle
@@ -9,7 +9,6 @@
         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 {
@@ -125,10 +125,10 @@
          the WASMFS build is available on this server (it is not by
          default) and that this server emits the COOP/COEP headers.
          <ul>
-            <li><a href='scratchpad-wasmfs.html'>scratchpad-wasmfs</a>:
+            <!--li><a href='scratchpad-wasmfs.html'>scratchpad-wasmfs</a>:
              experimenting with WASMFS/OPFS-based persistence.
-            </li>
-            <li><a href='speedtest1-wasmfs.html?flags=--size,15'>speedtest1-wasmfs</a>:
+            </li-->
+            <li><a href='speedtest1-wasmfs.html?flags=--size,10'>speedtest1-wasmfs</a>:
              a variant of speedtest1 built solely for the wasmfs/opfs
              feature.
            </li>
@@ -0,0 +1,284 @@
+/*
+** 2024-09-23
+**
+** 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 app's single purpose is to emit parts of the Makefile code for
+** building sqlite3's WASM build. The main motivation is to generate
+** code which "can" be created via GNU Make's eval command but is
+** highly illegible when constructed that way. Attempts to write this
+** app in Bash and TCL have suffered from the problem that both
+** require escaping $ symbols, making the resulting script code as
+** illegible as the eval spaghetti we want to get away from. Writing
+** it in C is, somewhat surprisingly, _slightly_ less illegible than
+** writing it in bash, tcl, or native Make code.
+**
+** The emitted makefile code is not standalone - it depends on
+** variables and $(call)able functions from the main makefile.
+**
+*/
+
+#undef NDEBUG
+#define DEBUG 1
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#define pf printf
+#define ps puts
+/* Very common printf() args combo. */
+#define zNM zName, zMode
+
+/*
+** Valid names for the zName arguments.
+*/
+#define JS_BUILD_NAMES sqlite3 sqlite3-wasmfs
+/*
+** Valid names for the zMode arguments of the "sqlite3" build. For the
+** "sqlite3-wasmfs" build, only "esm" (ES6 Module) is legal.
+*/
+#define JS_BUILD_MODES vanilla esm bundler-friendly node
+static const char * zBanner =
+  "\n########################################################################\n";
+
+/*
+** Emits common vars needed by the rest of the emitted code (but not
+** needed by makefile code outside of these generated pieces).
+*/
+static void mk_prologue(void){
+  pf("%s", zBanner);
+  ps("# extern-post-js* and extern-pre-js* are files for use with");
+  ps("# Emscripten's --extern-pre-js and --extern-post-js flags.");
+  ps("extern-pre-js.js := $(dir.api)/extern-pre-js.js");
+  ps("extern-post-js.js.in := $(dir.api)/extern-post-js.c-pp.js");
+  ps("# Emscripten flags for --[extern-][pre|post]-js=... for the");
+  ps("# various builds.");
+  ps("pre-post-common.flags := --extern-pre-js=$(sqlite3-license-version.js)");
+  ps("# pre-post-jses.deps.* = a list of dependencies for the");
+  ps("# --[extern-][pre/post]-js files.");
+  ps("pre-post-jses.deps.common := $(extern-pre-js.js) $(sqlite3-license-version.js)");
+}
+
+/*
+** Emits makefile code for setting up values for the --pre-js=FILE,
+** --post-js=FILE, and --extern-post-js=FILE emcc flags, as well as
+** populating those files.
+*/
+static void mk_pre_post(const char *zName  /* build name */,
+                        const char *zMode  /* build mode */,
+                        const char *zCmppD /* optional -D flags for c-pp for the
+                                           ** --pre/--post-js files. */){
+  pf("%s# Begin --pre/--post flags for %s-%s\n", zBanner, zName, zMode);
+  pf("c-pp.D.%s-%s := %s\n", zNM, zCmppD ? zCmppD : "");
+  pf("pre-post-%s-%s.flags ?=\n", zNM);
+
+  /* --pre-js=... */
+  pf("pre-js.js.%s-%s := $(dir.tmp)/pre-js.%s-%s.js\n",
+     zNM, zNM);
+  pf("$(pre-js.js.%s-%s): $(MAKEFILE)\n", zNM);
+#if 1
+  pf("$(eval $(call C-PP.FILTER,$(pre-js.js.in),$(pre-js.js.%s-%s),"
+     "$(c-pp.D.%s-%s)))\n", zNM, zNM);
+#else
+  /* This part is needed if/when we re-enable the custom
+  ** Module.instantiateModule() impl in api/pre-js.c-pp.js. */
+  pf("pre-js.js.%s-%s.intermediary := $(dir.tmp)/pre-js.%s-%s.intermediary.js\n",
+     zNM, zNM);
+  pf("$(eval $(call C-PP.FILTER,$(pre-js.js.in),$(pre-js.js.%s-%s.intermediary),"
+     "$(c-pp.D.%s-%s) -Dcustom-Module.instantiateModule))\n", zNM, zNM);
+  pf("$(pre-js.js.%s-%s): $(pre-js.js.%s-%s.intermediary)\n", zNM, zNM);
+  pf("\tcp $(pre-js.js.%s-%s.intermediary) $@\n", zNM);
+
+  /* Amend $(pre-js.js.zName-zMode) for all targets except the plain
+  ** "sqlite3" build... */
+  if( 0!=strcmp("sqlite3-wasmfs", zName)
+      && 0!=strcmp("sqlite3", zName) ){
+    pf("\t@echo 'Module[xNameOfInstantiateWasm].uri = "
+       "\"%s.wasm\";' >> $@\n", zName);
+  }
+#endif
+
+  /* --post-js=... */
+  pf("post-js.js.%s-%s := $(dir.tmp)/post-js.%s-%s.js\n", zNM, zNM);
+  pf("$(eval $(call C-PP.FILTER,$(post-js.js.in),"
+     "$(post-js.js.%s-%s),$(c-pp.D.%s-%s)))\n", zNM, zNM);
+
+  /* --extern-post-js=... */
+  pf("extern-post-js.js.%s-%s := $(dir.tmp)/extern-post-js.%s-%s.js\n", zNM, zNM);
+  pf("$(eval $(call C-PP.FILTER,$(extern-post-js.js.in),$(extern-post-js.js.%s-%s),"
+     "$(c-pp.D.%s-%s)))\n", zNM, zNM);
+
+  /* Combine flags for use with emcc... */
+  pf("pre-post-common.flags.%s-%s := "
+     "$(pre-post-common.flags) "
+     "--post-js=$(post-js.js.%s-%s) "
+     "--extern-post-js=$(extern-post-js.js.%s-%s)\n", zNM, zNM, zNM);
+
+  pf("pre-post-%s-%s.flags += $(pre-post-common.flags.%s-%s) "
+     "--pre-js=$(pre-js.js.%s-%s)\n", zNM, zNM, zNM);
+
+  /* Set up deps... */
+  pf("pre-post-jses.%s-%s.deps := $(pre-post-jses.deps.common) "
+     "$(post-js.js.%s-%s) $(extern-post-js.js.%s-%s)\n",
+     zNM, zNM, zNM);
+  pf("pre-post-%s-%s.deps := $(pre-post-jses.%s-%s.deps) $(dir.tmp)/pre-js.%s-%s.js\n",
+     zNM, zNM, zNM);
+  pf("# End --pre/--post flags for %s-%s%s", zName, zMode, zBanner);
+}
+
+/*
+** Emits rules for the fiddle builds.
+**
+*/
+static void mk_fiddle(){
+  int i = 0;
+
+  mk_pre_post("fiddle-module","vanilla", 0);
+  for( ; i < 2; ++i ){
+    const char *zTail = i ? ".debug" : "";
+    const char *zDir = i ? "$(dir.fiddle-debug)" : "$(dir.fiddle)";
+
+    pf("%s# Begin fiddle%s\n", zBanner, zTail);
+    pf("fiddle-module.js%s := %s/fiddle-module.js\n", zTail, zDir);
+    pf("fiddle-module.wasm%s := "
+       "$(subst .js,.wasm,$(fiddle-module.js%s))\n", zTail, zTail);
+    pf("$(fiddle-module.js%s):%s $(MAKEFILE) $(MAKEFILE.fiddle) "
+       "$(EXPORTED_FUNCTIONS.fiddle) "
+       "$(fiddle.cses) $(pre-post-fiddle-module-vanilla.deps) "
+       "$(SOAP.js)\n",
+       zTail, (i ? " $(fiddle-module.js)" : ""));
+    if( 1==i ){/*fiddle.debug*/
+      pf("	@test -d \"$(dir $@)\" || mkdir -p \"$(dir $@)\"\n");
+    }
+    pf("	$(emcc.bin) -o $@ $(fiddle.emcc-flags%s) "
+       "$(pre-post-fiddle-module-vanilla.flags) $(fiddle.cses)\n",
+       zTail);
+    pf("	$(maybe-wasm-strip) $(fiddle-module.wasm%s)\n", zTail);
+    pf("	@cp -p $(SOAP.js) $(dir $@)\n");
+    if( 1==i ){/*fiddle.debug*/
+      pf("	cp -p $(dir.fiddle)/index.html "
+         "$(dir.fiddle)/fiddle.js "
+         "$(dir.fiddle)/fiddle-worker.js "
+         "$(dir $@)\n");
+    }
+    pf("	@for i in %s/*.*js %s/*.html %s/*.wasm; do \\\n"
+       "		test -f $${i} || continue;             \\\n"
+       "		gzip < $${i} > $${i}.gz; \\\n"
+       "	done\n", zDir, zDir, zDir);
+    if( 0==i ){
+      ps("fiddle: $(fiddle-module.js)");
+    }else{
+      ps("fiddle-debug: $(fiddle-module-debug.js)");
+    }
+    pf("# End fiddle%s%s", zTail, zBanner);
+  }
+}
+
+/*
+** Emits makefile code for one build of the library, primarily defined
+** by the combination of zName and zMode, each of which must be values
+** from JS_BUILD_NAMES resp. JS_BUILD_MODES.
+*/
+static void mk_lib_mode(const char *zName     /* build name */,
+                        const char *zMode     /* build mode */,
+                        int bIsEsm            /* true only for ESM build */,
+                        const char *zApiJsOut /* name of generated sqlite3-api.js/.mjs */,
+                        const char *zJsOut    /* name of generated sqlite3.js/.mjs */,
+                        const char *zCmppD    /* extra -D flags for c-pp */,
+                        const char *zEmcc     /* extra flags for emcc */){
+  assert( zName );
+  assert( zMode );
+  assert( zApiJsOut );
+  assert( zJsOut );
+  if( !zCmppD ) zCmppD = "";
+  if( !zEmcc ) zEmcc = "";
+
+  pf("%s# Begin build [%s-%s]\n", zBanner, zNM);
+  pf("ifneq (1,$(MAKING_CLEAN))\n");
+  pf("$(info Setting up build [%s-%s]: %s)\n", zNM, zJsOut);
+  mk_pre_post(zNM, zCmppD);
+  pf("\nemcc.flags.%s.%s ?=\n", zNM);
+  if( zEmcc[0] ){
+    pf("emcc.flags.%s.%s += %s\n", zNM, zEmcc);
+  }
+  pf("$(eval $(call C-PP.FILTER, $(sqlite3-api.js.in), %s, %s))\n",
+     zApiJsOut, zCmppD);
+
+  /* target zJsOut */
+  pf("%s: %s $(MAKEFILE) $(sqlite3-wasm.cfiles) $(EXPORTED_FUNCTIONS.api) "
+     "$(pre-post-%s-%s.deps)\n",
+     zJsOut, zApiJsOut, zNM);
+  pf("\t@echo \"Building $@ ...\"\n");
+  pf("\t$(emcc.bin) -o $@ $(emcc_opt_full) $(emcc.flags) \\\n");
+  pf("\t\t$(emcc.jsflags) -sENVIRONMENT=$(emcc.environment.%s) \\\n", zMode);
+  pf("\t\t$(pre-post-%s-%s.flags) \\\n", zNM);
+  pf("\t\t$(emcc.flags.%s) $(emcc.flags.%s.%s) \\\n", zName, zNM);
+  pf("\t\t$(cflags.common) $(SQLITE_OPT) \\\n"
+     "\t\t$(cflags.%s) $(cflags.%s.%s) \\\n"
+     "\t\t$(cflags.wasm_extra_init) $(sqlite3-wasm.cfiles)\n", zName, zNM);
+  if( bIsEsm ){
+    /* TODO? Replace this CALL with the corresponding makefile code.
+    ** OTOH, we also use this $(call) in the speedtest1-wasmfs build,
+    ** which is not part of the rules emitted by this program. */
+    pf("\t@$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,1,%d)\n",
+       0==strcmp("sqlite3-wasmfs", zName) ? 1 : 0);
+  }
+  pf("\t@dotwasm=$(basename $@).wasm; \\\n"
+     "\tchmod -x $$dotwasm; \\\n"
+     "\t$(maybe-wasm-strip) $$dotwasm; \\\n");
+  /*
+  ** The above $(emcc.bin) call will write zJsOut and will create a
+  ** like-named .wasm file. That .wasm file name gets hard-coded into
+  ** zJsOut so we need to, for some cases, patch zJsOut to use the
+  ** name sqlite3.wasm instead. Note that the resulting .wasm file is
+  ** identical for all builds for which zEmcc is empty.
+  */
+  if( 0==strcmp("bundler-friendly", zMode)
+      || 0==strcmp("node", zMode) ) {
+    pf("\techo 'Patching $@ for %s.wasm...' \\\n", zName);
+    pf("\trm -f $$dotwasm; dotwasm=; \\\n"
+       "\tsed -i -e 's/%s-%s.wasm/%s.wasm/g' $@ || exit $$?; \\\n",
+       zNM, zName);
+  }
+  pf("\tls -la $$dotwasm $@\n");
+  if( 0!=strcmp("sqlite3-wasmfs", zName) ){
+    /* The sqlite3-wasmfs build is optional and needs to be invoked
+    ** conditionally using info we don't have here. */
+    pf("all: %s\n", zJsOut);
+  }
+  ps("endif\n# ^^^ !$(MAKING_CLEAN)");
+  pf("# End build [%s-%s]%s", zNM, zBanner);
+}
+
+int main(void){
+  int rc = 0;
+  pf("# What follows was GENERATED by %s. Edit at your own risk.\n", __FILE__);
+  mk_prologue();
+  mk_lib_mode("sqlite3", "vanilla", 0,
+              "$(sqlite3-api.js)", "$(sqlite3.js)", 0, 0);
+  mk_lib_mode("sqlite3", "esm", 1,
+              "$(sqlite3-api.mjs)", "$(sqlite3.mjs)",
+              "-Dtarget=es6-module", 0);
+  mk_lib_mode("sqlite3", "bundler-friendly", 1,
+              "$(sqlite3-api-bundler-friendly.mjs)", "$(sqlite3-bundler-friendly.mjs)",
+              "$(c-pp.D.sqlite3-esm) -Dtarget=es6-bundler-friendly", 0);
+  mk_lib_mode("sqlite3" , "node", 1,
+              "$(sqlite3-api-node.mjs)", "$(sqlite3-node.mjs)",
+              "$(c-pp.D.sqlite3-bundler-friendly) -Dtarget=node", 0);
+  mk_lib_mode("sqlite3-wasmfs", "esm" ,1,
+              "$(sqlite3-api-wasmfs.mjs)", "$(sqlite3-wasmfs.mjs)",
+              "$(c-pp.D.sqlite3-bundler-friendly) -Dwasmfs",
+              "-sEXPORT_ES6 -sUSE_ES6_IMPORT_META");
+
+  mk_fiddle();
+  mk_pre_post("speedtest1","vanilla", 0);
+  mk_pre_post("speedtest1-wasmfs","esm", "$(c-pp.D.sqlite3-bundler-friendly) -Dwasmfs");
+  return rc;
+}
@@ -10,14 +10,14 @@ wMsg('log',"speedtest1-wasmfs starting...");
 */
 const wasmfsDir = function f(wasmUtil,dirName="/opfs"){
  if(undefined !== f._) return f._;
-  if( !self.FileSystemHandle
-      || !self.FileSystemDirectoryHandle
-      || !self.FileSystemFileHandle){
+  if( !globalThis.FileSystemHandle
+      || !globalThis.FileSystemDirectoryHandle
+      || !globalThis.FileSystemFileHandle){
    return f._ = "";
  }
  try{
    if(0===wasmUtil.xCallWrapped(
-      'sqlite3_wasm_init_wasmfs', 'i32', ['string'], dirName
+      'sqlite3__wasm_init_wasmfs', 'i32', ['string'], dirName
    )){
      return f._ = dirName;
    }else{
@@ -36,7 +36,7 @@ const logErr = (...args)=>wMsg('logErr',...args);
 const runTests = function(sqlite3){
  console.log("Module inited.",sqlite3);
  const wasm = sqlite3.wasm;
-  const __unlink = wasm.xWrap("sqlite3_wasm_vfs_unlink", "int", ["*","string"]);
+  const __unlink = wasm.xWrap("sqlite3__wasm_vfs_unlink", "int", ["*","string"]);
  const unlink = (fn)=>__unlink(0,fn);
  const pDir = wasmfsDir(wasm);
  if(pDir) log("Persistent storage:",pDir);
@@ -46,7 +46,7 @@ const runTests = function(sqlite3){
  }
  const scope = wasm.scopedAllocPush();
  const dbFile = pDir+"/speedtest1.db";
-  const urlParams = new URL(self.location.href).searchParams;
+  const urlParams = new URL(globalThis.location.href).searchParams;
  const argv = ["speedtest1"];
  if(urlParams.has('flags')){
    argv.push(...(urlParams.get('flags').split(',')));
@@ -848,171 +848,176 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
    }/*WhWasmUtil*/)

  ////////////////////////////////////////////////////////////////////
-    .t('sqlite3.StructBinder (jaccwabyt🐇)', function(sqlite3){
-      const S = sqlite3, W = S.wasm;
-      const MyStructDef = {
-        sizeof: 16,
-        members: {
-          p4: {offset: 0, sizeof: 4, signature: "i"},
-          pP: {offset: 4, sizeof: 4, signature: "P"},
-          ro: {offset: 8, sizeof: 4, signature: "i", readOnly: true},
-          cstr: {offset: 12, sizeof: 4, signature: "s"}
-        }
-      };
-      if(W.bigIntEnabled){
-        const m = MyStructDef;
-        m.members.p8 = {offset: m.sizeof, sizeof: 8, signature: "j"};
-        m.sizeof += m.members.p8.sizeof;
-      }
-      const StructType = S.StructBinder.StructType;
-      const K = S.StructBinder('my_struct',MyStructDef);
-      T.mustThrowMatching(()=>K(), /via 'new'/).
-        mustThrowMatching(()=>new K('hi'), /^Invalid pointer/);
-      const k1 = new K(), k2 = new K();
-      try {
-        T.assert(k1.constructor === K).
-          assert(K.isA(k1)).
-          assert(k1 instanceof K).
-          assert(K.prototype.lookupMember('p4').key === '$p4').
-          assert(K.prototype.lookupMember('$p4').name === 'p4').
-          mustThrowMatching(()=>K.prototype.lookupMember('nope'), /not a mapped/).
-          assert(undefined === K.prototype.lookupMember('nope',false)).
-          assert(k1 instanceof StructType).
-          assert(StructType.isA(k1)).
-          mustThrowMatching(()=>k1.$ro = 1, /read-only/);
-        Object.keys(MyStructDef.members).forEach(function(key){
-          key = K.memberKey(key);
-          T.assert(0 == k1[key],
-                   "Expecting allocation to zero the memory "+
-                   "for "+key+" but got: "+k1[key]+
-                   " from "+k1.memoryDump());
-        });
-        T.assert('number' === typeof k1.pointer).
-          mustThrowMatching(()=>k1.pointer = 1, /pointer/);
-        k1.$p4 = 1; k1.$pP = 2;
-        T.assert(1 === k1.$p4).assert(2 === k1.$pP);
-        if(MyStructDef.members.$p8){
-          k1.$p8 = 1/*must not throw despite not being a BigInt*/;
-          k1.$p8 = BigInt(Number.MAX_SAFE_INTEGER * 2);
-          T.assert(BigInt(2 * Number.MAX_SAFE_INTEGER) === k1.$p8);
-        }
-        T.assert(!k1.ondispose);
-        k1.setMemberCString('cstr', "A C-string.");
-        T.assert(Array.isArray(k1.ondispose)).
-          assert(k1.ondispose[0] === k1.$cstr).
-          assert('number' === typeof k1.$cstr).
-          assert('A C-string.' === k1.memberToJsString('cstr'));
-        k1.$pP = k2;
-        T.assert(k1.$pP === k2.pointer);
-        k1.$pP = null/*null is special-cased to 0.*/;
-        T.assert(0===k1.$pP);
-        let ptr = k1.pointer;
-        k1.dispose();
-        T.assert(undefined === k1.pointer).
-          mustThrowMatching(()=>{k1.$pP=1}, /disposed instance/);
-      }finally{
-        k1.dispose();
-        k2.dispose();
-      }
-
-      if(!W.bigIntEnabled){
-        log("Skipping WasmTestStruct tests: BigInt not enabled.");
-        return;
-      }
-
-      const WTStructDesc =
-            W.ctype.structs.filter((e)=>'WasmTestStruct'===e.name)[0];
-      const autoResolvePtr = true /* EXPERIMENTAL */;
-      if(autoResolvePtr){
-        WTStructDesc.members.ppV.signature = 'P';
-      }
-      const WTStruct = S.StructBinder(WTStructDesc);
-      //log(WTStruct.structName, WTStruct.structInfo);
-      const wts = new WTStruct();
-      //log("WTStruct.prototype keys:",Object.keys(WTStruct.prototype));
-      try{
-        T.assert(wts.constructor === WTStruct).
-          assert(WTStruct.memberKeys().indexOf('$ppV')>=0).
-          assert(wts.memberKeys().indexOf('$v8')>=0).
-          assert(!K.isA(wts)).
-          assert(WTStruct.isA(wts)).
-          assert(wts instanceof WTStruct).
-          assert(wts instanceof StructType).
-          assert(StructType.isA(wts)).
-          assert(wts.pointer>0).assert(0===wts.$v4).assert(0n===wts.$v8).
-          assert(0===wts.$ppV).assert(0===wts.$xFunc);
-        const testFunc =
-              W.xGet('sqlite3__wasm_test_struct'/*name gets mangled in -O3 builds!*/);
-        let counter = 0;
-        //log("wts.pointer =",wts.pointer);
-        const wtsFunc = function(arg){
-          /*log("This from a JS function called from C, "+
-              "which itself was called from JS. arg =",arg);*/
-          ++counter;
-          if(3===counter){
-            tossQuietly("Testing exception propagation.");
+    .t({
+      name: 'sqlite3.StructBinder (jaccwabyt🐇)',
+      predicate: (sqlite3)=>!!sqlite3.wasm.exports.sqlite3__wasm_test_struct
+        || "Built without SQLITE_WASM_ENABLE_C_TESTS",
+      test: function(sqlite3){
+        const S = sqlite3, W = S.wasm;
+        const MyStructDef = {
+          sizeof: 16,
+          members: {
+            p4: {offset: 0, sizeof: 4, signature: "i"},
+            pP: {offset: 4, sizeof: 4, signature: "P"},
+            ro: {offset: 8, sizeof: 4, signature: "i", readOnly: true},
+            cstr: {offset: 12, sizeof: 4, signature: "s"}
          }
+        };
+        if(W.bigIntEnabled){
+          const m = MyStructDef;
+          m.members.p8 = {offset: m.sizeof, sizeof: 8, signature: "j"};
+          m.sizeof += m.members.p8.sizeof;
+        }
+        const StructType = S.StructBinder.StructType;
+        const K = S.StructBinder('my_struct',MyStructDef);
+        T.mustThrowMatching(()=>K(), /via 'new'/).
+          mustThrowMatching(()=>new K('hi'), /^Invalid pointer/);
+        const k1 = new K(), k2 = new K();
+        try {
+          T.assert(k1.constructor === K).
+            assert(K.isA(k1)).
+            assert(k1 instanceof K).
+            assert(K.prototype.lookupMember('p4').key === '$p4').
+            assert(K.prototype.lookupMember('$p4').name === 'p4').
+            mustThrowMatching(()=>K.prototype.lookupMember('nope'), /not a mapped/).
+            assert(undefined === K.prototype.lookupMember('nope',false)).
+            assert(k1 instanceof StructType).
+            assert(StructType.isA(k1)).
+            mustThrowMatching(()=>k1.$ro = 1, /read-only/);
+          Object.keys(MyStructDef.members).forEach(function(key){
+            key = K.memberKey(key);
+            T.assert(0 == k1[key],
+                     "Expecting allocation to zero the memory "+
+                     "for "+key+" but got: "+k1[key]+
+                     " from "+k1.memoryDump());
+          });
+          T.assert('number' === typeof k1.pointer).
+            mustThrowMatching(()=>k1.pointer = 1, /pointer/);
+          k1.$p4 = 1; k1.$pP = 2;
+          T.assert(1 === k1.$p4).assert(2 === k1.$pP);
+          if(MyStructDef.members.$p8){
+            k1.$p8 = 1/*must not throw despite not being a BigInt*/;
+            k1.$p8 = BigInt(Number.MAX_SAFE_INTEGER * 2);
+            T.assert(BigInt(2 * Number.MAX_SAFE_INTEGER) === k1.$p8);
+          }
+          T.assert(!k1.ondispose);
+          k1.setMemberCString('cstr', "A C-string.");
+          T.assert(Array.isArray(k1.ondispose)).
+            assert(k1.ondispose[0] === k1.$cstr).
+            assert('number' === typeof k1.$cstr).
+            assert('A C-string.' === k1.memberToJsString('cstr'));
+          k1.$pP = k2;
+          T.assert(k1.$pP === k2.pointer);
+          k1.$pP = null/*null is special-cased to 0.*/;
+          T.assert(0===k1.$pP);
+          let ptr = k1.pointer;
+          k1.dispose();
+          T.assert(undefined === k1.pointer).
+            mustThrowMatching(()=>{k1.$pP=1}, /disposed instance/);
+        }finally{
+          k1.dispose();
+          k2.dispose();
        }
-        wts.$v4 = 10; wts.$v8 = 20;
-        wts.$xFunc = W.installFunction(wtsFunc, wts.memberSignature('xFunc'))
-        T.assert(0===counter).assert(10 === wts.$v4).assert(20n === wts.$v8)
-          .assert(0 === wts.$ppV).assert('number' === typeof wts.$xFunc)
-          .assert(0 === wts.$cstr)
-          .assert(wts.memberIsString('$cstr'))
-          .assert(!wts.memberIsString('$v4'))
-          .assert(null === wts.memberToJsString('$cstr'))
-          .assert(W.functionEntry(wts.$xFunc) instanceof Function);
-        /* It might seem silly to assert that the values match
-           what we just set, but recall that all of those property
-           reads and writes are, via property interceptors,
-           actually marshaling their data to/from a raw memory
-           buffer, so merely reading them back is actually part of
-           testing the struct-wrapping API. */

-        testFunc(wts.pointer);
-        //log("wts.pointer, wts.$ppV",wts.pointer, wts.$ppV);
-        T.assert(1===counter).assert(20 === wts.$v4).assert(40n === wts.$v8)
-          .assert(wts.$ppV === wts.pointer)
-          .assert('string' === typeof wts.memberToJsString('cstr'))
-          .assert(wts.memberToJsString('cstr') === wts.memberToJsString('$cstr'))
-          .mustThrowMatching(()=>wts.memberToJsString('xFunc'),
-                             /Invalid member type signature for C-string/)
-        ;
-        testFunc(wts.pointer);
-        T.assert(2===counter).assert(40 === wts.$v4).assert(80n === wts.$v8)
-          .assert(wts.$ppV === wts.pointer);
-        /** The 3rd call to wtsFunc throw from JS, which is called
-            from C, which is called from JS. Let's ensure that
-            that exception propagates back here... */
-        T.mustThrowMatching(()=>testFunc(wts.pointer),/^Testing/);
-        W.uninstallFunction(wts.$xFunc);
-        wts.$xFunc = 0;
-        wts.$ppV = 0;
-        T.assert(!wts.$ppV);
-        //WTStruct.debugFlags(0x03);
-        wts.$ppV = wts;
-        T.assert(wts.pointer === wts.$ppV)
-        wts.setMemberCString('cstr', "A C-string.");
-        T.assert(Array.isArray(wts.ondispose)).
-          assert(wts.ondispose[0] === wts.$cstr).
-          assert('A C-string.' === wts.memberToJsString('cstr'));
-        const ptr = wts.pointer;
-        wts.dispose();
-        T.assert(ptr).assert(undefined === wts.pointer);
-      }finally{
-        wts.dispose();
-      }
+        if(!W.bigIntEnabled){
+          log("Skipping WasmTestStruct tests: BigInt not enabled.");
+          return;
+        }

-      if(1){ // ondispose of other struct instances
-        const s1 = new WTStruct, s2 = new WTStruct, s3 = new WTStruct;
-        T.assert(s1.lookupMember instanceof Function)
-          .assert(s1.addOnDispose instanceof Function);
-        s1.addOnDispose(s2,"testing variadic args");
-        T.assert(2===s1.ondispose.length);
-        s2.addOnDispose(s3);
-        s1.dispose();
-        T.assert(!s2.pointer,"Expecting s2 to be ondispose'd by s1.");
-        T.assert(!s3.pointer,"Expecting s3 to be ondispose'd by s2.");
+        const WTStructDesc =
+              W.ctype.structs.filter((e)=>'WasmTestStruct'===e.name)[0];
+        const autoResolvePtr = true /* EXPERIMENTAL */;
+        if(autoResolvePtr){
+          WTStructDesc.members.ppV.signature = 'P';
+        }
+        const WTStruct = S.StructBinder(WTStructDesc);
+        //log(WTStruct.structName, WTStruct.structInfo);
+        const wts = new WTStruct();
+        //log("WTStruct.prototype keys:",Object.keys(WTStruct.prototype));
+        try{
+          T.assert(wts.constructor === WTStruct).
+            assert(WTStruct.memberKeys().indexOf('$ppV')>=0).
+            assert(wts.memberKeys().indexOf('$v8')>=0).
+            assert(!K.isA(wts)).
+            assert(WTStruct.isA(wts)).
+            assert(wts instanceof WTStruct).
+            assert(wts instanceof StructType).
+            assert(StructType.isA(wts)).
+            assert(wts.pointer>0).assert(0===wts.$v4).assert(0n===wts.$v8).
+            assert(0===wts.$ppV).assert(0===wts.$xFunc);
+          const testFunc =
+                W.xGet('sqlite3__wasm_test_struct'/*name gets mangled in -O3 builds!*/);
+          let counter = 0;
+          //log("wts.pointer =",wts.pointer);
+          const wtsFunc = function(arg){
+            /*log("This from a JS function called from C, "+
+              "which itself was called from JS. arg =",arg);*/
+            ++counter;
+            if(3===counter){
+              tossQuietly("Testing exception propagation.");
+            }
+          }
+          wts.$v4 = 10; wts.$v8 = 20;
+          wts.$xFunc = W.installFunction(wtsFunc, wts.memberSignature('xFunc'))
+          T.assert(0===counter).assert(10 === wts.$v4).assert(20n === wts.$v8)
+            .assert(0 === wts.$ppV).assert('number' === typeof wts.$xFunc)
+            .assert(0 === wts.$cstr)
+            .assert(wts.memberIsString('$cstr'))
+            .assert(!wts.memberIsString('$v4'))
+            .assert(null === wts.memberToJsString('$cstr'))
+            .assert(W.functionEntry(wts.$xFunc) instanceof Function);
+          /* It might seem silly to assert that the values match
+             what we just set, but recall that all of those property
+             reads and writes are, via property interceptors,
+             actually marshaling their data to/from a raw memory
+             buffer, so merely reading them back is actually part of
+             testing the struct-wrapping API. */
+
+          testFunc(wts.pointer);
+          //log("wts.pointer, wts.$ppV",wts.pointer, wts.$ppV);
+          T.assert(1===counter).assert(20 === wts.$v4).assert(40n === wts.$v8)
+            .assert(wts.$ppV === wts.pointer)
+            .assert('string' === typeof wts.memberToJsString('cstr'))
+            .assert(wts.memberToJsString('cstr') === wts.memberToJsString('$cstr'))
+            .mustThrowMatching(()=>wts.memberToJsString('xFunc'),
+                               /Invalid member type signature for C-string/)
+          ;
+          testFunc(wts.pointer);
+          T.assert(2===counter).assert(40 === wts.$v4).assert(80n === wts.$v8)
+            .assert(wts.$ppV === wts.pointer);
+          /** The 3rd call to wtsFunc throw from JS, which is called
+              from C, which is called from JS. Let's ensure that
+              that exception propagates back here... */
+          T.mustThrowMatching(()=>testFunc(wts.pointer),/^Testing/);
+          W.uninstallFunction(wts.$xFunc);
+          wts.$xFunc = 0;
+          wts.$ppV = 0;
+          T.assert(!wts.$ppV);
+          //WTStruct.debugFlags(0x03);
+          wts.$ppV = wts;
+          T.assert(wts.pointer === wts.$ppV)
+          wts.setMemberCString('cstr', "A C-string.");
+          T.assert(Array.isArray(wts.ondispose)).
+            assert(wts.ondispose[0] === wts.$cstr).
+            assert('A C-string.' === wts.memberToJsString('cstr'));
+          const ptr = wts.pointer;
+          wts.dispose();
+          T.assert(ptr).assert(undefined === wts.pointer);
+        }finally{
+          wts.dispose();
+        }
+
+        if(1){ // ondispose of other struct instances
+          const s1 = new WTStruct, s2 = new WTStruct, s3 = new WTStruct;
+          T.assert(s1.lookupMember instanceof Function)
+            .assert(s1.addOnDispose instanceof Function);
+          s1.addOnDispose(s2,"testing variadic args");
+          T.assert(2===s1.ondispose.length);
+          s2.addOnDispose(s3);
+          s1.dispose();
+          T.assert(!s2.pointer,"Expecting s2 to be ondispose'd by s1.");
+          T.assert(!s3.pointer,"Expecting s3 to be ondispose'd by s2.");
+        }
      }
    }/*StructBinder*/)

@@ -1126,75 +1131,83 @@ globalThis.sqlite3InitModule = sqlite3InitModule;

  ////////////////////////////////////////////////////////////////////////
  T.g('sqlite3.oo1')
-    .t('Create db', function(sqlite3){
-      const dbFile = '/tester1.db';
-      sqlite3.util.sqlite3__wasm_vfs_unlink(0, dbFile);
-      const db = this.db = new sqlite3.oo1.DB(dbFile, 0 ? 'ct' : 'c');
-      db.onclose = {
-        disposeAfter: [],
-        disposeBefore: [
-          (db)=>{
-            //console.debug("db.onclose.before dropping modules");
-            //sqlite3.capi.sqlite3_drop_modules(db.pointer, 0);
-          }
-        ],
-        before: function(db){
-          while(this.disposeBefore.length){
-            const v = this.disposeBefore.shift();
-            console.debug("db.onclose.before cleaning up:",v);
-            if(wasm.isPtr(v)) wasm.dealloc(v);
-            else if(v instanceof sqlite3.StructBinder.StructType){
-              v.dispose();
-            }else if(v instanceof Function){
-              try{ v(db) } catch(e){
-                console.warn("beforeDispose() callback threw:",e);
+    .t({
+      name:'Create db',
+      //predicate: (sqlite3)=>
+      test: function(sqlite3){
+        const dbFile = '/tester1.db';
+        sqlite3.util.sqlite3__wasm_vfs_unlink(0, dbFile);
+        const db = this.db = new sqlite3.oo1.DB(dbFile, 0 ? 'ct' : 'c');
+        db.onclose = {
+          disposeAfter: [],
+          disposeBefore: [
+            (db)=>{
+              //console.debug("db.onclose.before dropping modules");
+              //sqlite3.capi.sqlite3_drop_modules(db.pointer, 0);
+            }
+          ],
+          before: function(db){
+            while(this.disposeBefore.length){
+              const v = this.disposeBefore.shift();
+              console.debug("db.onclose.before cleaning up:",v);
+              if(wasm.isPtr(v)) wasm.dealloc(v);
+              else if(v instanceof sqlite3.StructBinder.StructType){
+                v.dispose();
+              }else if(v instanceof Function){
+                try{ v(db) } catch(e){
+                  console.warn("beforeDispose() callback threw:",e);
+                }
+              }
+            }
+          },
+          after: function(){
+            while(this.disposeAfter.length){
+              const v = this.disposeAfter.shift();
+              console.debug("db.onclose.after cleaning up:",v);
+              if(wasm.isPtr(v)) wasm.dealloc(v);
+              else if(v instanceof sqlite3.StructBinder.StructType){
+                v.dispose();
+              }else if(v instanceof Function){
+                try{v()} catch(e){/*ignored*/}
              }
            }
          }
-        },
-        after: function(){
-          while(this.disposeAfter.length){
-            const v = this.disposeAfter.shift();
-            console.debug("db.onclose.after cleaning up:",v);
-            if(wasm.isPtr(v)) wasm.dealloc(v);
-            else if(v instanceof sqlite3.StructBinder.StructType){
-              v.dispose();
-            }else if(v instanceof Function){
-              try{v()} catch(e){/*ignored*/}
-            }
-          }
+        };
+
+        T.assert(wasm.isPtr(db.pointer))
+          .mustThrowMatching(()=>db.pointer=1, /read-only/)
+          .assert(0===sqlite3.capi.sqlite3_extended_result_codes(db.pointer,1))
+          .assert('main'===db.dbName(0))
+          .assert('string' === typeof db.dbVfsName())
+          .assert(db.pointer === wasm.xWrap.testConvertArg('sqlite3*',db));
+        // Custom db error message handling via sqlite3_prepare_v2/v3()
+        let rc = capi.sqlite3_prepare_v3(db.pointer, {/*invalid*/}, -1, 0, null, null);
+        T.assert(capi.SQLITE_MISUSE === rc)
+          .assert(0 === capi.sqlite3_errmsg(db.pointer).indexOf("Invalid SQL"))
+          .assert(dbFile === db.dbFilename())
+          .assert(!db.dbFilename('nope'));
+        //Sanity check DB.checkRc()...
+        let ex;
+        try{db.checkRc(rc)}
+        catch(e){ex = e}
+        T.assert(ex instanceof sqlite3.SQLite3Error)
+          .assert(capi.SQLITE_MISUSE===ex.resultCode)
+          .assert(0===ex.message.indexOf("SQLITE_MISUSE: sqlite3 result code"))
+          .assert(ex.message.indexOf("Invalid SQL")>0);
+        T.assert(db === db.checkRc(0))
+          .assert(db === sqlite3.oo1.DB.checkRc(db,0))
+          .assert(null === sqlite3.oo1.DB.checkRc(null,0));
+        this.progressHandlerCount = 0;
+        if( wasm.compileOptionUsed('OMIT_PROGRESS_CALLBACK') ){
+          T.assert( !capi.sqlite3_progress_handler );
+        }else{
+          T.assert( !!capi.sqlite3_progress_handler );
+          capi.sqlite3_progress_handler(db, 5, (p)=>{
+            ++this.progressHandlerCount;
+            return 0;
+          }, 0);
        }
-      };
-
-      T.assert(wasm.isPtr(db.pointer))
-        .mustThrowMatching(()=>db.pointer=1, /read-only/)
-        .assert(0===sqlite3.capi.sqlite3_extended_result_codes(db.pointer,1))
-        .assert('main'===db.dbName(0))
-        .assert('string' === typeof db.dbVfsName())
-        .assert(db.pointer === wasm.xWrap.testConvertArg('sqlite3*',db));
-      // Custom db error message handling via sqlite3_prepare_v2/v3()
-      let rc = capi.sqlite3_prepare_v3(db.pointer, {/*invalid*/}, -1, 0, null, null);
-      T.assert(capi.SQLITE_MISUSE === rc)
-        .assert(0 === capi.sqlite3_errmsg(db.pointer).indexOf("Invalid SQL"))
-        .assert(dbFile === db.dbFilename())
-        .assert(!db.dbFilename('nope'));
-      //Sanity check DB.checkRc()...
-      let ex;
-      try{db.checkRc(rc)}
-      catch(e){ex = e}
-      T.assert(ex instanceof sqlite3.SQLite3Error)
-        .assert(capi.SQLITE_MISUSE===ex.resultCode)
-        .assert(0===ex.message.indexOf("SQLITE_MISUSE: sqlite3 result code"))
-        .assert(ex.message.indexOf("Invalid SQL")>0);
-      T.assert(db === db.checkRc(0))
-        .assert(db === sqlite3.oo1.DB.checkRc(db,0))
-        .assert(null === sqlite3.oo1.DB.checkRc(null,0));
-
-      this.progressHandlerCount = 0;
-      capi.sqlite3_progress_handler(db, 5, (p)=>{
-        ++this.progressHandlerCount;
-        return 0;
-      }, 0);
+      }
    })
  ////////////////////////////////////////////////////////////////////
    .t('sqlite3_db_config() and sqlite3_db_status()', function(sqlite3){
@@ -1236,7 +1249,7 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
        new TextEncoder('utf-8').encode("select 3 as a")
      );
      //debug("statement =",st);
-      this.progressHandlerCount = 0;
+      T.assert( !this.progressHandlerCount );
      let rc;
      try {
        T.assert(wasm.isPtr(st.pointer))
@@ -1278,7 +1291,8 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
              st, capi.SQLITE_STMTSTATUS_RUN, 0
            ) > 0);

-        T.assert(this.progressHandlerCount > 0,
+        T.assert(this.progressHandlerCount>0
+                 || wasm.compileOptionUsed('OMIT_PROGRESS_CALLBACK'),
                 "Expecting progress callback.").
          assert(0===capi.sqlite3_strglob("*.txt", "foo.txt")).
          assert(0!==capi.sqlite3_strglob("*.txt", "foo.xtx")).
@@ -1363,7 +1377,8 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
        .assert(2 === list.length)
        .assert('string'===typeof list[1])
        .assert(3===db.changes())
-        .assert(this.progressHandlerCount > 0,
+        .assert(this.progressHandlerCount > 0
+                || wasm.compileOptionUsed('OMIT_PROGRESS_CALLBACK'),
                "Expecting progress callback.")
      if(wasm.bigIntEnabled){
        T.assert(3n===db.changes(false,true));
@@ -1904,7 +1919,9 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
  ////////////////////////////////////////////////////////////////////
    .t({
      name: 'Window UDFs',
-      //predicate: ()=>false,
+      predicate: (sqlite3)=>!!sqlite3.wasm.exports.sqlite3_create_window_function
+      /*!sqlite3.wasm.compileOptionUsed('OMIT_WINDOWFUNC')*/
+        || "Missing window functions",
      test: function(){
        /* Example window function, table, and results taken from:
           https://sqlite.org/windowfunctions.html#udfwinfunc */
@@ -2153,7 +2170,7 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
  ////////////////////////////////////////////////////////////////////////
    .t({
      name: 'virtual table #1: eponymous w/ manual exception handling',
-      predicate: ()=>!!capi.sqlite3_create_module || "Missing vtab support",
+      predicate: (sqlite3)=>!!sqlite3.capi.sqlite3_vtab || "Missing vtab support",
      test: function(sqlite3){
        const VT = sqlite3.vtab;
        const tmplCols = Object.assign(Object.create(null),{
@@ -2350,7 +2367,7 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
  ////////////////////////////////////////////////////////////////////////
    .t({
      name: 'virtual table #2: non-eponymous w/ automated exception wrapping',
-      predicate: ()=>!!capi.sqlite3_create_module || "Missing vtab support",
+      predicate: (sqlite3)=>!!sqlite3.capi.sqlite3_vtab || "Missing vtab support",
      test: function(sqlite3){
        const VT = sqlite3.vtab;
        const tmplCols = Object.assign(Object.create(null),{
@@ -3132,7 +3149,10 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
        ]);
        T.assert(2 === u1.getFileCount() /* one is the journal file */)
          .assert(3 === db.selectValue('select count(*) from t'))
-          .assert('wal'===db.selectValue('pragma journal_mode'));
+          .assert(
+            'wal'===db.selectValue('pragma journal_mode')
+              || wasm.compileOptionUsed('OMIT_WAL')
+          );
        db.close();
        T.assert(1 === u1.getFileCount());
        db = new u2.OpfsSAHPoolDb(dbName);
@@ -3300,17 +3320,7 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
  T.g('Bug Reports')
    .t({
      name: 'Delete via bound parameter in subquery',
-      predicate: function(sqlite3){
-        const d = new sqlite3.oo1.DB();
-        try{
-          d.exec("create virtual table f using fts5(x)");
-          return true;
-        }catch(e){
-          return "FTS5 is not available";
-        }finally{
-          d.close();
-        }
-      },
+      predicate: ()=>wasm.compileOptionUsed('ENABLE_FTS5') || "Missing FTS5",
      test: function(sqlite3){
        // Testing https://sqlite.org/forum/forumpost/40ce55bdf5
        // with the exception that that post uses "external content"
@@ -6,19 +6,20 @@
 # GNUMakefile.
 ########################################################################
 MAKEFILE.wasmfs := $(lastword $(MAKEFILE_LIST))
-$(warning The WASMFS build is currently incomplete.)
+# ensure that the following message starts on line 10 or higher for proper
+# $(warning) alignment!
+ifneq (1,$(MAKING_CLEAN))
+  $(warning !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!)
+  $(warning !! The WASMFS build is not well-supported. WASMFS is a proverbial)
+  $(warning !! moving target, sometimes changing in incompatible ways between)
+  $(warning !! Emscripten versions. This build is provided for adventurous folks)
+  $(warning !! and is not a supported deliverable of the SQLite project.)
+  $(warning !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!)
+endif

-#dir.wasmfs := $(dir.wasm)
-dir.wasmfs := $(dir.dout)
 sqlite3-wasmfs.js     := $(dir.wasmfs)/sqlite3-wasmfs.js
-sqlite3-wasmfs.mjs    := $(dir.wasmfs)/sqlite3-wasmfs.mjs
 sqlite3-wasmfs.wasm   := $(dir.wasmfs)/sqlite3-wasmfs.wasm

-CLEAN_FILES += $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.wasm) \
-    $(subst .js,.worker.js,$(sqlite3-wasmfs.js)) \
-    $(sqlite3-wasmfs.mjs) \
-    $(subst .mjs,.worker.mjs,$(sqlite3-wasmfs.mjs))
-
 ########################################################################
 # emcc flags for .c/.o.
 cflags.sqlite3-wasmfs :=
@@ -30,12 +31,15 @@ cflags.sqlite3-wasmfs += -DSQLITE_ENABLE_WASMFS
 # emcc flags specific to building the final .js/.wasm file...
 emcc.flags.sqlite3-wasmfs :=
 emcc.flags.sqlite3-wasmfs += \
-  -sEXPORTED_RUNTIME_METHODS=wasmMemory,allocateUTF8OnStack,stringToUTF8OnStack
+  -sEXPORTED_RUNTIME_METHODS=wasmMemory
                          # wasmMemory ==> for -sIMPORTED_MEMORY
-                          # *OnStack ==> wasmfs internals (leaky abstraction)
+# Some version of emcc between 3.1.60-ish(?) and 3.1.62 deprecated the
+# use of (allocateUTF8OnStack,stringToUTF8OnStack). Earlier emcc
+# versions will fail to build without those in the
+# EXPORTED_RUNTIME_METHODS list.
 emcc.flags.sqlite3-wasmfs += -sUSE_CLOSURE_COMPILER=0
 emcc.flags.sqlite3-wasmfs += -Wno-limited-postlink-optimizations
-# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag.
+# ^^^^^ emcc likes to warn when we have "limited optimizations" via the -g3 flag.
 emcc.flags.sqlite3-wasmfs += -sMEMORY64=0
 emcc.flags.sqlite3-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128)
 # ^^^^ 64MB is not enough for WASMFS/OPFS test runs using batch-runner.js
@@ -51,12 +55,7 @@ emcc.flags.sqlite3-wasmfs += -sALLOW_MEMORY_GROWTH=0
 # And, indeed, it runs slowly if memory is permitted to grow.
 #emcc.flags.sqlite3-wasmfs.vanilla :=
 #emcc.flags.sqlite3-wasmfs.esm := -sEXPORT_ES6 -sUSE_ES6_IMPORT_META
-sqlite3-api.mjs.wasmfs := $(dir.tmp)/sqlite3-api-wasmfs.mjs
-$(eval $(call SETUP_LIB_BUILD_MODE,sqlite3-wasmfs,esm,1,\
-    $(sqlite3-api.mjs.wasmfs), $(sqlite3-wasmfs.mjs),\
-    $(c-pp.D.sqlite3-bundler-friendly) -Dwasmfs,\
-    -sEXPORT_ES6 -sUSE_ES6_IMPORT_META\
-))
+all: $(sqlite3-wasmfs.mjs)
 $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(MAKEFILE.wasmfs)
 ########################################################################
 # Build quirk: we cannot build BOTH .js and .mjs with our current
@@ -67,8 +66,8 @@ $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(MAKEFILE.wasmfs)
 # build both modes they would need to have distinct base names or
 # output directories. "The problem" with giving them distinct base
 # names is that it means that the corresponding .wasm file is also
-# built/saved multiple times.
-#
+# built/saved multiple times. It is likely that anyone wanting to use
+# WASMFS will want an ES6 module, so that's what we build here.
 wasmfs.build.ext := mjs
 $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(SOAP.js.bld)
 ifeq (js,$(wasmfs.build.ext))
@@ -78,7 +77,6 @@ else
  $(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.mjs)
  wasmfs: $(sqlite3-wasmfs.mjs)
 endif
-#all: wasmfs

 ########################################################################
 # speedtest1 for wasmfs.
@@ -103,13 +101,11 @@ $(speedtest1-wasmfs.mjs): $(speedtest1.cfiles) $(sqlite3-wasmfs.js) \
        $(emcc.flags.sqlite3-wasmfs) \
        $(emcc.flags.speedtest1-wasmfs) \
        -o $@ $(speedtest1.cfiles) -lm
-	@$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,1)
+	@$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,1,1)
 	$(maybe-wasm-strip) $(speedtest1-wasmfs.wasm)
 	chmod -x $(speedtest1-wasmfs.wasm)
 	ls -la $@ $(speedtest1-wasmfs.wasm)

 wasmfs: $(speedtest1-wasmfs.mjs)
-CLEAN_FILES += $(speedtest1-wasmfs.mjs) $(speedtest1-wasmfs.wasm) \
-     $(subst .js,.worker.js,$(speedtest1-wasmfs.mjs))
 # end speedtest1.js
 ########################################################################
@@ -560,14 +560,27 @@ sqlite3$(EXE):	sqlite3.h libsqlite3.a shell.c
 	$(TCCX) $(READLINE_FLAGS) -o sqlite3$(EXE) $(SHELL_OPT) \
 		shell.c libsqlite3.a $(LIBREADLINE) $(TLIBS) $(THREADLIB)

-sqldiff$(EXE):	$(TOP)/tool/sqldiff.c sqlite3.c sqlite3.h
-	$(TCCX) -o sqldiff$(EXE) -DSQLITE_THREADSAFE=0 \
+sqldiff$(EXE):	$(TOP)/tool/sqldiff.c $(TOP)/ext/misc/sqlite3_stdio.h sqlite3.c sqlite3.h
+	$(TCCX) -I$(TOP)/ext/misc -o sqldiff$(EXE) -DSQLITE_THREADSAFE=0 \
 		$(TOP)/tool/sqldiff.c sqlite3.c $(TLIBS) $(THREADLIB)

 dbhash$(EXE):	$(TOP)/tool/dbhash.c sqlite3.c sqlite3.h
 	$(TCCX) -o dbhash$(EXE) -DSQLITE_THREADSAFE=0 \
 		$(TOP)/tool/dbhash.c sqlite3.c $(TLIBS) $(THREADLIB)

+RSYNC_SRC = \
+  $(TOP)/tool/sqlite3-rsync.c \
+  sqlite3.c
+
+RSYNC_OPT = \
+  -DSQLITE_ENABLE_DBPAGE_VTAB \
+  -DSQLITE_THREADSAFE=0 \
+  -DSQLITE_OMIT_LOAD_EXTENSION \
+  -DSQLITE_OMIT_DEPRECATED
+
+sqlite3-rsync$(EXE):	$(RSYNC_SRC)
+	$(TCC) -o $@ $(RSYNC_OPT) $(RSYNC_SRC) $(TLIBS)
+
 scrub$(EXE):	$(TOP)/ext/misc/scrub.c sqlite3.o
 	$(TCC) -I. -DSCRUB_STANDALONE -o scrub$(EXE) $(TOP)/ext/misc/scrub.c sqlite3.o $(THREADLIB)

@@ -750,8 +763,6 @@ keywordhash.h:	$(TOP)/tool/mkkeywordhash.c
 # Source and header files that shell.c depends on
 SHELL_DEP = \
    $(TOP)/src/shell.c.in \
-    $(TOP)/ext/consio/console_io.c \
-    $(TOP)/ext/consio/console_io.h \
    $(TOP)/ext/expert/sqlite3expert.c \
    $(TOP)/ext/expert/sqlite3expert.h \
    $(TOP)/ext/intck/sqlite3intck.c \
@@ -768,9 +779,13 @@ SHELL_DEP = \
    $(TOP)/ext/misc/percentile.c \
    $(TOP)/ext/misc/regexp.c \
    $(TOP)/ext/misc/series.c \
+    $(TOP)/ext/misc/sha1.c \
    $(TOP)/ext/misc/shathree.c \
    $(TOP)/ext/misc/sqlar.c \
+    $(TOP)/ext/misc/sqlite3_stdio.c \
+    $(TOP)/ext/misc/sqlite3_stdio.h \
    $(TOP)/ext/misc/uint.c \
+    $(TOP)/ext/misc/vfstrace.c \
    $(TOP)/ext/misc/zipfile.c \
    $(TOP)/ext/recover/dbdata.c \
    $(TOP)/ext/recover/sqlite3recover.c \
@@ -1144,7 +1159,7 @@ clean:
 	rm -f showjournal$(TEXE) showstat4$(TEXE) showwal$(TEXE) speedtest1$(TEXE)
 	rm -f wordcount$(TEXE) changeset$(TEXE) version-info$(TEXE)
 	rm -f *.dll *.lib *.exp *.def *.pc *.vsix
-	rm -f sqlite3_analyzer$(TEXE)
+	rm -f sqlite3_analyzer$(TEXE) sqlite3-rsync$(TEXE)
 	rm -f mptester$(TEXE) rbu$(TEXE)	srcck1$(TEXE)
 	rm -f fuzzershell$(TEXE) fuzzcheck$(TEXE) sqldiff$(TEXE) dbhash$(TEXE)
 	rm -f threadtest5$(TEXE)
@@ -1,12 +1,12 @@
-C Improved\serror\smessages\son\spercentile\sfunctions.\s\sMore\stests\scases\sfor\npercentile\sand\sfor\sordered-set\saggregates.
-D 2024-09-02T11:17:04.726
+C Origin\sshould\snot\ssend\scontent\sfor\sthe\slock-byte\spage\sto\sthe\sreplica,\sin\nsqlite3-rsync.\n[forum:/forumpost/d14b55e5fa19c25f|Forum\spost\sd14b55e5fa19c25f].
+D 2024-10-06T21:26:56.282
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
-F Makefile.in af5fbc3453b745daa68c7aa5dfdb945c09cb724971db3b783d6b5e1a62279e28
+F Makefile.in 6a826facc78c3c8ad38bf00ed588f6aa3665ccd7a9749b891d20582fc290c77e
 F Makefile.linux-gcc f3842a0b1efbfbb74ac0ef60e56b301836d05b4d867d014f714fa750048f1ab6
-F Makefile.msc 2c905f4c795a628d7fd892294e8fdec6d5f719fa5b252cb839fed147e64435a0
-F README.md 5b678e264236788390d11991f2c0052bd73f19790173883fc56d638bcb849154
+F Makefile.msc 9c6d80d9d103fa42e931f4c464884a5e577fae8563acc7589bff4e43fbe8f864
+F README.md c3c0f19532ce28f6297a71870f3c7b424729f0e6d9ab889616d3587dd2332159
 F VERSION 0db40f92c04378404eb45bff93e9e42c148c7e54fd3da99469ed21e22411f5a6
 F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
 F art/icon-243x273.gif 9750b734f82fdb3dc43127753d5e6fbf3b62c9f4e136c2fbf573b2f57ea87af5
@@ -39,7 +39,7 @@ F configure 49523f0a070b583cea040d26eff53a65fb0893eca4663b1343a4d5a9a964da53 x
 F configure.ac a100ebf7a07f5dedd319ef547dd467d1676ed059b85a7877aa9c44ac309f7000
 F contrib/sqlitecon.tcl 210a913ad63f9f991070821e599d600bd913e0ad
 F doc/F2FS.txt c1d4a0ae9711cfe0e1d8b019d154f1c29e0d3abfe820787ba1e9ed7691160fcd
-F doc/compile-for-windows.md e8635eea9153dcd6a51fd2740666ebc4492b3813cb1ac31cd8e99150df91762d
+F doc/compile-for-windows.md 4d4bfafda42a7a33f166d23aed4db1bb4ea1e5751595a5cced2bad349fd14652
 F doc/json-enhancements.md e356fc834781f1f1aa22ee300027a270b2c960122468499bf347bb123ce1ea4f
 F doc/jsonb.md 5fab4b8613aa9153fbeb6259297bd4697988af8b3d23900deba588fa7841456b
 F doc/lemon.html 8b266ff711d2ec7f867c3dca37634963f48a630329908cc282beebfa8c708706
@@ -53,12 +53,12 @@ F ext/README.md fd5f78013b0a2bc6f0067afb19e6ad040e89a10179b4f6f03eee58fac5f169bd
 F ext/async/README.txt e12275968f6fde133a80e04387d0e839b0c51f91
 F ext/async/sqlite3async.c 6f247666b495c477628dd19364d279c78ea48cd90c72d9f9b98ad1aff3294f94
 F ext/async/sqlite3async.h 46b47c79357b97ad85d20d2795942c0020dc20c532114a49808287f04aa5309a
-F ext/consio/console_io.c 6e02dea912a49f55785b0027fe77960aafee6c236307c23f82ec86a69f1a2001 x
+F ext/consio/console_io.c d2b74afae8d301de2e8447b1045fcd33eb59df13bf581d906d99c74fe5d2b13f x
 F ext/consio/console_io.h b5ebe34aa15b357621ebbea3d3f2e2b24750d4280b5802516409e23947fd9ee5
 F ext/expert/README.md b321c2762bb93c18ea102d5a5f7753a4b8bac646cb392b3b437f633caf2020c3
 F ext/expert/expert.c d548d603a4cc9e61f446cc179c120c6713511c413f82a4a32b1e1e69d3f086a4
-F ext/expert/expert1.test 661f873fd451127edf822ef0d520088faa319135f6a15bd10be6801ac284ac9b
-F ext/expert/sqlite3expert.c 8b09aeb2b95a9fca8b6628b522bf4d69aa746ff64c38eb1e99a9b5fad8cf03b9
+F ext/expert/expert1.test b10f9e20f64102a015c0fcf54cb7b7680266b397e91d93cdad45f57857cdfba6
+F ext/expert/sqlite3expert.c df417a6d91873a74d35daa9259171647c23c6601415e938e8a71702703f3d677
 F ext/expert/sqlite3expert.h ca81efc2679a92373a13a3e76a6138d0310e32be53d6c3bfaedabd158ea8969b
 F ext/expert/test_expert.c b767b2039a0df707eb3147e86bcf68b252d8455d9a41774b1a836cd052ceca70
 F ext/fts3/README.content b9078d0843a094d86af0d48dffbff13c906702b4c3558012e67b9c7cc3bf59ee
@@ -93,15 +93,15 @@ F ext/fts3/unicode/mkunicode.tcl 63db9624ccf70d4887836c320eda93ab552f21008f3be7e
 F ext/fts3/unicode/parseunicode.tcl a981bd6466d12dd17967515801c3ff23f74a281be1a03cf1e6f52a6959fc77eb
 F ext/fts5/extract_api_docs.tcl 009cf59c77afa86d137b0cca3e3b1a5efbe2264faa2df233f9a7aa8563926d15
 F ext/fts5/fts5.h efaaac0df3d3bc740383044c144b582f47921aafa21d7b10eb98f42c24c740b0
-F ext/fts5/fts5Int.h 26a71a09cefa4ef6b4516b204ed48da3e1380970a19b3482eea7c5d805655360
+F ext/fts5/fts5Int.h bf0d3efa144f36e00f9b5206626aec2f436f58186a0835092394f2202e9828e3
 F ext/fts5/fts5_aux.c 65a0468dd177d6093aa9ae1622e6d86b0136b8d267c62c0ad6493ad1e9a3d759
 F ext/fts5/fts5_buffer.c 0eec58bff585f1a44ea9147eae5da2447292080ea435957f7488c70673cb6f09
-F ext/fts5/fts5_config.c 353d2a0d12678cae6ab5b9ce54aed8dac0825667b69248b5a4ed81cbefc109ea
+F ext/fts5/fts5_config.c a6633d88596758941c625b526075b85d3d9fd1089d8d9eab5db6e8a71fd347ad
 F ext/fts5/fts5_expr.c 9a56f53700d1860f0ee2f373c2b9074eaf2a7aa0637d0e27a6476de26a3fee33
 F ext/fts5/fts5_hash.c adda4272be401566a6e0ba1acbe70ee5cb97fce944bc2e04dc707152a0ec91b1
-F ext/fts5/fts5_index.c eb9a0dda3bc6ef969a6be8d2746af56856e67251810ddba08622b45be8477abe
-F ext/fts5/fts5_main.c 1fddb53f495425d9314c74b30c5848a9dd254be0e5f445bfe38292d5ab21c288
-F ext/fts5/fts5_storage.c 9a9b880be12901f1962ae2a5a7e1b74348b3099a1e728764e419f75d98e3e612
+F ext/fts5/fts5_index.c 368a968570ce12ba40223e284a588d9f93ee23a0133727f0df1fcd64086b1fb6
+F ext/fts5/fts5_main.c 50eb059e51d730e8e0c77df4e568b018079e112a755c094488b0d5b1aa06afbb
+F ext/fts5/fts5_storage.c 337b05e4c66fc822d031e264d65bde807ec2fab08665ca2cc8aaf9c5fa06792c
 F ext/fts5/fts5_tcl.c 4db9258a7882c5eac0da4433042132aaf15b87dd1e1636c7a6ca203abd2c8bfe
 F ext/fts5/fts5_test_mi.c 08c11ec968148d4cb4119d96d819f8c1f329812c568bac3684f5464be177d3ee
 F ext/fts5/fts5_test_tok.c 3cb0a9b508b30d17ef025ccddd26ae3dc8ddffbe76c057616e59a9aa85d36f3b
@@ -132,7 +132,7 @@ F ext/fts5/test/fts5auxdata.test 372549088ff792655f73e62b9dfaf4863ce74f5e604c06c
 F ext/fts5/test/fts5bigid.test 2860854c2561a57594192b00c33a29f91cb85e25f3d6c03b5c2b8f62708f39dd
 F ext/fts5/test/fts5bigpl.test 8f09858aab866c33593560e6480b2b6975ae7ff29ca32ad7b77e2da61402f8ef
 F ext/fts5/test/fts5bigtok.test 541119e616c637caea925a8c028c37c2c29e94383e00aa2f9198d530724b6e36
-F ext/fts5/test/fts5blob.test caa33369e93e99ff494cd1103506ae34c5afbc0bcc369ed5e58e135144e33689
+F ext/fts5/test/fts5blob.test 9644a5f917306690e08c5f89a470a3f2489376eaa52026eeca3209d149d6af74
 F ext/fts5/test/fts5cat.test bf67dd335f964482ee658287521b81e2b88697b45eb7f73933e15f198ed447cb
 F ext/fts5/test/fts5circref.test f880dfd0d99f6fb73b88ccacb0927d18e833672fd906cc47d6b4e529419eaa62
 F ext/fts5/test/fts5colset.test 544f4998cdbfe06a3123887fc0221612e8aa8192cdaff152872f1aadb10e6897
@@ -145,7 +145,7 @@ F ext/fts5/test/fts5contentless.test 606f063b29ba0f46d4b79aa36cdd1ef4dab5de53eae
 F ext/fts5/test/fts5contentless2.test 70ffe6c611d8f278240da56734df8a77948f04e2739b358439e9bdcf56ced35f
 F ext/fts5/test/fts5contentless3.test 75eaae5ad6b284ee447788943974d323228f27cc35a1681da997135cff95bc6a
 F ext/fts5/test/fts5contentless4.test ec34dc69ef474ca9997dae6d91e072906e0e9a5a4b05ea89964c863833b6eff8
-F ext/fts5/test/fts5contentless5.test 40cdcb4fe751672450829c5a96bd32c25fc2f6076279dd2ce5c58ac9a390132a
+F ext/fts5/test/fts5contentless5.test 38cd0392c730dc7090c550321ce3c24ba4c392bc97308b51a4180e9959dca7b5
 F ext/fts5/test/fts5corrupt.test 6485f721b88ba355ca5d701e7ee87a4efa3ea578d8e6adb26f51ef956c8328bd
 F ext/fts5/test/fts5corrupt2.test 335911e3f68b9625d850325f9e29a128db3f4276a8c9d4e32134580da8f924c4
 F ext/fts5/test/fts5corrupt3.test 4fc3bf129f1616bea00884a23fd9d7b0e46d01791d2b57fe8d68ac36e8d3ff7c
@@ -154,7 +154,7 @@ F ext/fts5/test/fts5corrupt5.test 11b47126f5772cc37b67e3e8b2ed05895c4d07c05338bc
 F ext/fts5/test/fts5corrupt6.test 2d72db743db7b5d9c9a6d0cfef24d799ed1aa5e8192b66c40e871a37ed9eed06
 F ext/fts5/test/fts5corrupt7.test 4e830875c33b9ea3c4cf1ba71e692b63893cbb4faae8c69b1071889dc26e211c
 F ext/fts5/test/fts5corrupt8.test b81d802e41631e98100f49a1aadeeffef860e30a62d6ed7d743c2797c477239e
-F ext/fts5/test/fts5delete.test 619295b20dbc1d840b403ee07c878f52378849c3c02e44f2ee143b3e978a0aa7
+F ext/fts5/test/fts5delete.test 2a5008f8b1174ef41d1974e606928c20e4f9da77d9f8347aed818994d89cced4
 F ext/fts5/test/fts5detail.test 54015e9c43ec4ba542cfb93268abdf280e0300f350efd08ee411284b03595cc4
 F ext/fts5/test/fts5determin.test 1b77879b2ae818b5b71c859e534ee334dac088b7cf3ff3bf76a2c82b1c788d11
 F ext/fts5/test/fts5dlidx.test a7c42b0a74dc7c8aa1a46d586e0aadda4b6cc42c24450f8d3774b21166e93159
@@ -178,17 +178,18 @@ F ext/fts5/test/fts5faultE.test 844586ce71dab4be85bb86880e87b624d089f851654cd22e
 F ext/fts5/test/fts5faultF.test 4abef99f86e99d9f0c6460dd68c586a766b6b9f1f660ada55bf2e8266bd1bbc1
 F ext/fts5/test/fts5faultG.test 0544411ffcb3e19b42866f757a8a5e0fb8fef3a62c06f61d14deebc571bb7ea9
 F ext/fts5/test/fts5faultH.test 2b2b5b8cb1b3fd7679f488c06e22af44107fbc6137eaf45b3e771dc7b149312d
-F ext/fts5/test/fts5faultI.test ae4b83ac953200bd7b66d53038f7d6a4fc29cd64831b8e1795538babcea7c638
+F ext/fts5/test/fts5faultI.test 0706b307b208638554c9e65b4091e1c0dd8c92941535089a301df454ff2c56f4
 F ext/fts5/test/fts5first.test bfd685b96905bf541d99d8644e0a7219d1d833455a08ab64e344071a613b6ba9
 F ext/fts5/test/fts5full.test 97d263c1072f4a560929cca31e70f65d2ae232610e17e6affcf7e979df59547b
 F ext/fts5/test/fts5fuzz1.test 238d8c45f3b81342aa384de3e581ff2fa330bf922a7b69e484bbc06051a1080e
 F ext/fts5/test/fts5hash.test fd3e0367fbf0b0944d6936fdb22696350f57b9871069c6766251578a103e8a14
 F ext/fts5/test/fts5integrity.test 646796671205dae46af5bb12a49b5696483cfe8e12d71d21454940b13ace95ab
+F ext/fts5/test/fts5integrity2.test 4c3636615c0201232c44a8105d5cb14fd5499fd0ee3014d7ffd7e83aac76ece8
 F ext/fts5/test/fts5interrupt.test 20d04204d3e341b104c0c24a41596b6393a3a81eba1044c168db0e106f9ac92c
 F ext/fts5/test/fts5lastrowid.test f36298a1fb9f988bde060a274a7ce638faa9c38a31400f8d2d27ea9373e0c4a1
 F ext/fts5/test/fts5leftjoin.test c0b4cafb9661379e576dc4405c0891d8fcc2782680740513c4d1fc114b43d4ad
 F ext/fts5/test/fts5limits.test 8ab67cf5d311c124b6ceb0062d0297767176df4572d955fce79fa43004dff01c
-F ext/fts5/test/fts5locale.test 797cf6f5e017462ab11313ce884b9f1df8ff063811e74ef42190cd19ed6b600b
+F ext/fts5/test/fts5locale.test 83ba7ee12628b540d3098f39c39c1de0c0440eddff8f7512c8c698d0c4a3ae3c
 F ext/fts5/test/fts5matchinfo.test 877520582feb86bbfd95ab780099bcba4526f18ac75ee34979144cf86ba3a5a3
 F ext/fts5/test/fts5merge.test 2654df0bcdb2d117c2d38b6aeb0168061be01c643f9e9194b36c43a2970e8082
 F ext/fts5/test/fts5merge2.test 3ebad1a59d6ad3fb66eff6523a09e95dc6367cbefb3cd73196801dea0425c8e2
@@ -205,7 +206,7 @@ F ext/fts5/test/fts5origintext2.test f4505ff79bf7369f2b8b10b9cef7476049d844e20b3
 F ext/fts5/test/fts5origintext3.test 45c33cf0c91a9ca0e36d298462db3edc7c8fe45fd185649a9dbfd66bb670058b
 F ext/fts5/test/fts5origintext4.test 0d3ef0a8038f471dbc83001c34fe5f7ae39b571bfc209670771eb28bc0fc50e8
 F ext/fts5/test/fts5origintext5.test ee12b440ec335e5b422d1668aca0051b52ff28b6ee67073e8bbc29f509fd562b
-F ext/fts5/test/fts5phrase.test 6260b8be40d51ec287992cd983a5e58a9be92e5dc6e01d48cbce1ad0e95a99d8
+F ext/fts5/test/fts5phrase.test bb2554bb61d15f859678c96dc89a7de415cd5fc3b7b54c29b82a0d0ad138091c
 F ext/fts5/test/fts5plan.test f8b0d752a818059a934cdc96c0f77de058a67a0a57bb3a8181d28307ab5b1626
 F ext/fts5/test/fts5porter.test 15b514fac8690b58e99c330efe5bf5615bc43f2fae4a3cca3f923dbaff55a0c0
 F ext/fts5/test/fts5porter2.test 94f0e4351e2c99b4e74f1fae05a4ddf1cb5b926620a8c14554160d075ddc7a59
@@ -245,7 +246,9 @@ F ext/fts5/test/fts5unicode2.test 3bbd30152f9f760bf13886e5b1e5ec23ff62f56758ddda
 F ext/fts5/test/fts5unicode3.test f4891a3dac3b49c3d7c0fdb29566e9eb0ecff35263370c89f9661b1952b20818
 F ext/fts5/test/fts5unicode4.test 728c8f0caafb05567f524ad313d9f8b780fa45987b8a8df04eff87923c74b4d0
 F ext/fts5/test/fts5unindexed.test 168838d2c385e131120bbf5b516d2432a5fabc4caa2259c932e1d49ae209a4ae
+F ext/fts5/test/fts5unindexed2.test 516236eceaac05ace322290a0d3705b4c4ffe4760d8eb9d014d9d27d56dfcc02
 F ext/fts5/test/fts5update.test b8affd796e45c94a4d19ad5c26606ea06065a0f162a9562d9f005b5a80ccf0bc
+F ext/fts5/test/fts5update2.test c5baa76799ac605ebb8e5e21035db2014b396cef25c903eb96ba39b1d6f9f046
 F ext/fts5/test/fts5version.test c22d163c17e60a99f022cbc52de5a48bb7f84deaa00fe15e9bc4c3aa1996204e
 F ext/fts5/test/fts5vocab.test 2a2bdb60d0998fa3124d541b6d30b019504918dc43a6584645b63a24be72f992
 F ext/fts5/test/fts5vocab2.test bbba149c254375d00055930c1a501c9a51e80b0d20bf7b98f3e9fa3b03786373
@@ -398,7 +401,7 @@ F ext/misc/dbdump.c b8592f6f2da292c62991a13864a60d6c573c47a9cc58362131b9e6a64f82
 F ext/misc/decimal.c 172cf81a8634e6a0f0bedaf71a8372fee63348cf5a3c4e1b78bb233c35889fdc
 F ext/misc/eval.c 04bc9aada78c888394204b4ed996ab834b99726fb59603b0ee3ed6e049755dc1
 F ext/misc/explain.c 606100185fb90d6a1eade1ed0414d53503c86820d8956a06e3b0a56291894f2b
-F ext/misc/fileio.c 916638042f318701460485032e33981056747d0f92e6757aa9499f2363ea7047
+F ext/misc/fileio.c e6b34db4df4b55b96265086c0010264e257b6eab1644e665697a6da587659403
 F ext/misc/fossildelta.c 8c026e086e406e2b69947f1856fa3b848fff5379962276430d10085b8756b05a
 F ext/misc/fuzzer.c 8b28acf1a7e95d50e332bdd47e792ff27054ad99d3f9bc2e91273814d4b31a5a
 F ext/misc/ieee754.c 62a90978204d2c956d5036eb89e548e736ca5fac0e965912867ddd7bb833256d
@@ -410,7 +413,7 @@ F ext/misc/nextchar.c 7877914c2a80c2f181dd04c3dbef550dfb54c93495dc03da2403b5dd58
 F ext/misc/noop.c f1a21cc9b7a4e667e5c8458d80ba680b8bd4315a003f256006046879f679c5a0
 F ext/misc/normalize.c bd84355c118e297522aba74de34a4fd286fc775524e0499b14473918d09ea61f
 F ext/misc/pcachetrace.c f4227ce03fb16aa8d6f321b72dd051097419d7a028a9853af048bee7645cb405
-F ext/misc/percentile.c 4e333fc78d2a7b9cf362e29f30fa3f486cdab9e69fbc9aa0f680399683aa22f7
+F ext/misc/percentile.c 42eb041edab407e512aaa087f99ed9287fe0b3224f7a6d194456c00fc1454312
 F ext/misc/prefixes.c 82645f79229877afab08c8b08ca1e7fa31921280906b90a61c294e4f540cd2a6
 F ext/misc/qpvtab.c fc189e127f68f791af90a487f4460ec91539a716daf45a0c357e963fd47cc06c
 F ext/misc/randomjson.c ef835fc64289e76ac4873b85fe12f9463a036168d7683cf2b773e36e6262c4ed
@@ -419,11 +422,13 @@ F ext/misc/remember.c add730f0f7e7436cd15ea3fd6a90fd83c3f706ab44169f7f048438b7d6
 F ext/misc/rot13.c 51ac5f51e9d5fd811db58a9c23c628ad5f333c173f1fc53c8491a3603d38556c
 F ext/misc/scrub.c 2a44b0d44c69584c0580ad2553f6290a307a49df4668941d2812135bfb96a946
 F ext/misc/series.c a6089b5e8e3002bd1e5d9877cee6aead0b9a6426e406c09a399817db9e9ae823
-F ext/misc/sha1.c 4011aef176616872b2a0d5bccf0ecfb1f7ce3fe5c3d107f3a8e949d8e1e3f08d
+F ext/misc/sha1.c cb5002148c2661b5946f34561701e9105e9d339b713ec8ac057fd888b196dcb9
 F ext/misc/shathree.c 1821d90a0040c9accdbe3e3527d378d30569475d758aa70f6848924c0b430e8c
 F ext/misc/showauth.c 732578f0fe4ce42d577e1c86dc89dd14a006ab52
-F ext/misc/spellfix.c c0aa7b80d6df45f7da59d912b38752bcac1af53a5766966160e6c5cdd397dbea
+F ext/misc/spellfix.c bcc42ef3fd29429bc01a83e751332b8d4690e65d45008449bdffe7656371487f
 F ext/misc/sqlar.c a6175790482328171da47095f87608b48a476d4fac78d8a9ff18b03a2454f634
+F ext/misc/sqlite3_stdio.c f110e6f2dc97c67e89f941f82af7dbd221193fa44d1e3ef38a691454a2cbccda
+F ext/misc/sqlite3_stdio.h f05eaf5e0258f0573910324a789a9586fc360a57678c57a6d63cfaa2245b6176
 F ext/misc/stmt.c b090086cd6bd6281c21271d38d576eeffe662f0e6b67536352ce32bbaa438321
 F ext/misc/stmtrand.c 59cffa5d8e158943ff1ce078956d8e208e8c04e67307e8f249dece2436dcb7fc
 F ext/misc/templatevtab.c 10f15b165b95423ddef593bc5dcb915ec4eb5e0f1066d585e5435a368b8bc22b
@@ -434,10 +439,11 @@ F ext/misc/urifuncs.c f71360d14fa9e7626b563f1f781c6148109462741c5235ac63ae0f8917
 F ext/misc/uuid.c 5bb2264c1b64d163efa46509544fd7500cb8769cb7c16dd52052da8d961505cf
 F ext/misc/vfslog.c 3932ab932eeb2601dbc4447cb14d445aaa9fbe43b863ef5f014401c3420afd20
 F ext/misc/vfsstat.c a85df08654743922a19410d7b1e3111de41bb7cd07d20dd16eda4e2b808d269d
+F ext/misc/vfstrace.c ac76a4ac4d907774fd423cc2b61410c756f9d0782e27cf6032e058594accaaca
 F ext/misc/vtablog.c 1100250ce8782db37c833e3a9a5c9a3ecf1af5e15b8325572b82e6e0a138ffb5
 F ext/misc/vtshim.c 1976e6dd68dd0d64508c91a6dfab8e75f8aaf6cd
 F ext/misc/wholenumber.c 0fa0c082676b7868bf2fa918e911133f2b349bcdceabd1198bba5f65b4fc0668
-F ext/misc/zipfile.c 5a3bf1b9cccb8e0da2389fe9e39e9c7f2b1351474b7e5090635f817d495eee3f
+F ext/misc/zipfile.c b62147ac4985eaac4e368d529b1f4f43ad6bc9ac13d6805d907fff3afdac64d3
 F ext/misc/zorder.c b0ff58fa643afa1d846786d51ea8d5c4b6b35aa0254ab5a82617db92f3adda64
 F ext/rbu/rbu.c 801450b24eaf14440d8fd20385aacc751d5c9d6123398df41b1b5aa804bf4ce8
 F ext/rbu/rbu1.test 25870dd7db7eb5597e2b4d6e29e7a7e095abf332660f67d89959552ce8f8f255
@@ -483,7 +489,7 @@ F ext/rbu/rbuvacuum.test 542561741ff2b262e3694bc6012b44694ee62c545845319a06f3237
 F ext/rbu/rbuvacuum2.test ae097d04feb041446a74fac94b24bffeb3fdd60e32b848c5611e507ab702b81b
 F ext/rbu/rbuvacuum3.test 3ce42695fdf21aaa3499e857d7d4253bc499ad759bcd6c9362042c13cd37d8de
 F ext/rbu/rbuvacuum4.test ffccd22f67e2d0b380d2889685742159dfe0d19a3880ca3d2d1d69eefaebb205
-F ext/rbu/sqlite3rbu.c 4a3376c0fb9a844a799ac529fb81260523f6b13c9f629bc270c632dbae5fc1f8
+F ext/rbu/sqlite3rbu.c c07817e89477b8fc286ab6ed87da5bc82fc3490bbbe9e9b22eb2d900e81ee5dc
 F ext/rbu/sqlite3rbu.h 9d923eb135c5d04aa6afd7c39ca47b0d1d0707c100e02f19fdde6a494e414304
 F ext/rbu/test_rbu.c b9727c3394307d058e806c1da0f8bb7b24daf3c6bb94cb10cca88ea4d5c806c0
 F ext/recover/dbdata.c 5295f4f922b60d7035b6b9fd5846b13071b9d97ed7fad8496837bb7640d24771
@@ -573,7 +579,7 @@ F ext/session/sessionG.test 3efe388282d641b65485b5462e67851002cd91a282dc95b685d0
 F ext/session/sessionH.test 71bbff6b1abb2c4ac62b84dee53273c37e0b21e5fde3aed80929403e091ef859
 F ext/session/session_common.tcl e5598096425486b363718e2cda48ee85d660c96b4f8ea9d9d7a4c3ef514769da
 F ext/session/session_speed_test.c dcf0ef58d76b70c8fbd9eab3be77cf9deb8bc1638fed8be518b62d6cbdef88b3
-F ext/session/sessionalter.test 460bdac2832a550519f6bc32e5db2c0cee94f335870aaf25a3a403a81ab20e17
+F ext/session/sessionalter.test e852acb3d2357aac7d0b920a2109da758c4331bfdf85b41d39aa3a8c18914f65
 F ext/session/sessionat.test 00c8badb35e43a2f12a716d2734a44d614ff62361979b6b85419035bc04b45ee
 F ext/session/sessionbig.test 47c381e7acfabeef17d98519a3080d69151723354d220afa2053852182ca7adf
 F ext/session/sessionchange.test 77c4702050f24270b58070e2cf01c95c3d232a3ef164b70f31974b386ce69903
@@ -581,10 +587,10 @@ F ext/session/sessionconflict.test 8b8cbd98548e2e636ddc17d0986276f60e833fb865617
 F ext/session/sessiondiff.test e89f7aedcdd89e5ebac3a455224eb553a171e9586fc3e1e6a7b3388d2648ba8d
 F ext/session/sessionfault.test c2b43d01213b389a3f518e90775fca2120812ba51e50444c4066962263e45c11
 F ext/session/sessionfault2.test b0d6a7c1d7398a7e800d84657404909c7d385965ea8576dc79ed344c46fbf41c
-F ext/session/sessionfault3.test 7c7547202775de268f3fe6f074c4d0d165151829710b4e64f90d4a01645ba9e7
+F ext/session/sessionfault3.test ce0b5d182133935c224d72507dbf1c5be1a1febf7e85d0b0fbd6d2f724b32b96
 F ext/session/sessioninvert.test 04075517a9497a80d39c495ba6b44f3982c7371129b89e2c52219819bc105a25
 F ext/session/sessionmem.test f2a735db84a3e9e19f571033b725b0b2daf847f3f28b1da55a0c1a4e74f1de09
-F ext/session/sessionnoact.test 506526a5fe29421ecc50d371774ef1bb04cbd9d906a8a468f0556cdbde184c22
+F ext/session/sessionnoact.test 2563dff62a2a80dc7c88002241b2fd1578c3e5438735e180fb7e941ebbc66214
 F ext/session/sessionnoop.test a9366a36a95ef85f8a3687856ebef46983df399541174cb1ede2ee53b8011bc7
 F ext/session/sessionnoop2.test de4672dce88464396ec9f30ed08c6c01643a69c53ae540fadbbf6d30642d64e8
 F ext/session/sessionrebase.test 702378bdcb5062f1106e74457beca8797d09c113a81768734a58b197b5b334e2
@@ -592,14 +598,14 @@ F ext/session/sessionrowid.test 85187c2f1b38861a5844868126f69f9ec62223a03449a98a
 F ext/session/sessionsize.test 8fcf4685993c3dbaa46a24183940ab9f5aa9ed0d23e5fb63bfffbdb56134b795
 F ext/session/sessionstat1.test 5e718d5888c0c49bbb33a7a4f816366db85f59f6a4f97544a806421b85dc2dec
 F ext/session/sessionwor.test 6fd9a2256442cebde5b2284936ae9e0d54bde692d0f5fd009ecef8511f4cf3fc
-F ext/session/sqlite3session.c c7473aafbd88f796391a8c25aa90975a8f3729ab7f4f8cf74ab9d3b014e10abe
+F ext/session/sqlite3session.c 3d0a7f0f7a1c946e01818c716a55a40ae30542a29a9045cb05daf7fb658cdafa
 F ext/session/sqlite3session.h 683ccbf16e2c2521661fc4c1cf918ce57002039efbcabcd8097fa4bca569104b
-F ext/session/test_session.c 6acbe67db80ab0806147eb62a12f9e3a44930f4a740b68b0a4340dddda2c10d7
+F ext/session/test_session.c aa29abdcc9011ac02f4fa38e8ede226106eaeee7c3ea7d8b2b999a124e0c368c
 F ext/userauth/sqlite3userauth.h 7f3ea8c4686db8e40b0a0e7a8e0b00fac13aa7a3
 F ext/userauth/user-auth.txt ca7e9ee82ca4e1c1744295f8184dd70edfae1992865d26c64303f539eb6c084c
 F ext/userauth/userauth.c 7f00cded7dcaa5d47f54539b290a43d2e59f4b1eb5f447545fa865f002fc80cb
 F ext/wasm/EXPORTED_FUNCTIONS.fiddle.in 27450c8b8c70875a260aca55435ec927068b34cef801a96205adb81bdcefc65c
-F ext/wasm/GNUmakefile d4f6586d9a36ee2869a8c7f77227a8b7f42b6c4623f3be594beafb1554ab20d9
+F ext/wasm/GNUmakefile bfd63f0462ac7e5b814a267e9101b8284d61731574ec673dae3178643cdb89ef
 F ext/wasm/README-dist.txt 6382cb9548076fca472fb3330bbdba3a55c1ea0b180ff9253f084f07ff383576
 F ext/wasm/README.md a8a2962c3aebdf8d2104a9102e336c5554e78fc6072746e5daf9c61514e7d193
 F ext/wasm/SQLTester/GNUmakefile e0794f676d55819951bbfae45cc5e8d7818dc460492dc317ce7f0d2eca15caff
@@ -607,21 +613,18 @@ F ext/wasm/SQLTester/SQLTester.mjs ce765c0ad7d57f93553d12ef4dca574deb00300134a26
 F ext/wasm/SQLTester/SQLTester.run.mjs c72b7fe2072d05992f7a3d8c6a1d34e95712513ceabe40849784e24e41c84638
 F ext/wasm/SQLTester/index.html 3f8a016df0776be76605abf20e815ecaafbe055abac0e1fe5ea080e7846b760d
 F ext/wasm/SQLTester/touint8array.c 2d5ece04ec1393a6a60c4bf96385bda5e1a10ad49f3038b96460fc5e5aa7e536
-F ext/wasm/api/EXPORTED_FUNCTIONS.sqlite3-auth 7ac80cc3b6a6d52e041bb295e85555ce797be78c15ef2008a64ae58815014080
-F ext/wasm/api/EXPORTED_FUNCTIONS.sqlite3-core 400213eb52a7e5ad5f448053d375cacf4dac2cf45d134f3edfe485ae4a49a183
-F ext/wasm/api/EXPORTED_FUNCTIONS.sqlite3-preupdate d1d62a2212099f2c0782d730beb8cb84a7a52d99c15ead2cb9b1411fff5fd6b1
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 F src/test_blob.c bcdf6a6c22d0bcc13c41479d63692ef413add2a4d30e1e26b9f74ab85b9fb4d5
 F src/test_btree.c 28283787d32b8fa953eb77412ad0de2c9895260e4e5bd5a94b3c7411664f90d5
-F src/test_config.c 345b8e383f71cecc36d0fa05f2f06639c254b188f98101c3c97749df43037086
+F src/test_config.c e8d041a84151cbaee4dd82eb32e4153abe06856bcfab4771968a8cf930a86332
 F src/test_delete.c e2fe07646dff6300b48d49b2fee2fe192ed389e834dd635e3b3bac0ce0bf9f8f
 F src/test_demovfs.c 3efa2adf4f21e10d95521721687d5ca047aea91fa62dd8cc22ac9e5a9c942383
 F src/test_devsym.c 649434ed34d0b03fbd5a6b42df80f0f9a7e53f94dd1710aad5dd8831e91c4e86
@@ -822,7 +826,6 @@ F src/test_tclvar.c ae873248a0188459b1c16ca7cc431265dacce524399e8b46725c2b3b7e04
 F src/test_thread.c d7a8bcea7445f37cc2a1f7f81dd6059634f45e0c61bfe80182b02872fb0328bb
 F src/test_vdbecov.c 5c426d9cd2b351f5f9ceb30cabf8c64a63bfcad644c507e0bd9ce2f6ae1a3bf3
 F src/test_vfs.c f298475e468c7e14945b20af885917181090c265aa3c4ade897849c9fbd396f2
-F src/test_vfstrace.c a2ea82df2ed8927e9eba49bdba1aa1aeb1dcb13dbf6558cff036da813031de9a
 F src/test_windirent.c a895e2c068a06644eef91a7f0a32182445a893b9a0f33d0cdb4283dca2486ac1
 F src/test_windirent.h da2e5b73c32d09905fbdd00f27cd802212a32a58ead882736fe4f5eb775ebc50
 F src/test_window.c 6d80e11fba89a1796525e6f0048ff0c7789aa2c6b0b11c80827dc1437bd8ea72
@@ -833,25 +836,25 @@ F src/treeview.c 88aa39b754f5ef7214385c1bbbdd2f3dc20efafeed0cf590e8d1199b9c6e44a
 F src/trigger.c 0bb986a5b96047fd597c6aac28588853df56064e576e6b81ba777ef2ccaac461
 F src/update.c 0e01aa6a3edf9ec112b33eb714b9016a81241497b1fb7c3e74332f4f71756508
 F src/upsert.c 215328c3f91623c520ec8672c44323553f12caeb4f01b1090ebdca99fdf7b4f1
-F src/utf.c f23165685a67b4caf8ec08fb274cb3f319103decfb2a980b7cfd55d18dfa855e
-F src/util.c 5d1a0134cf4240648d1c6bb5cc8efaca0ea2b5d5c840985aec7e947271f04375
+F src/utf.c 7bc550af6f3ddd5f5dc82d092c41f728acb760c92e0b47f391963b01ae52569b
+F src/util.c 4d57ae861d0e234019be9596818228d7715e44e6efaccb612cf4498bedc2e023
 F src/vacuum.c b763b6457bd058d2072ef9364832351fd8d11e8abf70cbb349657360f7d55c40
 F src/vdbe.c be5f58bc29f60252e041a618eae59e8d57d460ba136c5403cf0abf955560c457
 F src/vdbe.h c2549a215898a390de6669cfa32adba56f0d7e17ba5a7f7b14506d6fd5f0c36a
-F src/vdbeInt.h 949669dfd8a41550d27dcb905b494f2ccde9a2e6c1b0b04daa1227e2e74c2b2c
-F src/vdbeapi.c 80235ac380e9467fec1cb0883354d841f2a771976e766995f7e0c77f845406df
-F src/vdbeaux.c 25d685cafe119ff890c94345e884ea558a6b5d823bfa52ba708eb8ff3c70aa71
+F src/vdbeInt.h af7d7e8291edd0b19f2cd698e60e4d4031078f9a2f2328ac8f0b7efb134f8a1d
+F src/vdbeapi.c 53c7e26a2c0821a892b20eee2cde4656e31998212f3d515576c780dfaa45fd17
+F src/vdbeaux.c f06f011e4fac948941ea821ac365a9f1c163ef473e63756d6e499a37c6bda9ef
 F src/vdbeblob.c 255be187436da38b01f276c02e6a08103489bbe2a7c6c21537b7aecbe0e1f797
-F src/vdbemem.c 831a244831eaa45335f9ae276b50a7a82ee10d8c46c2c72492d4eb8c98d94d89
+F src/vdbemem.c df568ef0187e4be2788c35174f6d9b8566ab9475f9aff2d73907ed05aa5684b2
 F src/vdbesort.c d0a3c7056c081703c8b6d91ad60f17da5e062a5c64bf568ed0fa1b5f4cae311f
 F src/vdbetrace.c fe0bc29ebd4e02c8bc5c1945f1d2e6be5927ec12c06d89b03ef2a4def34bf823
 F src/vdbevtab.c fc46b9cbd759dc013f0b3724549cc0d71379183c667df3a5988f7e2f1bd485f3
-F src/vtab.c 5fb499d20494b7eecaadb7584634af9afcb374cb0524912b475fcb1712458a1b
+F src/vtab.c 316cd48e9320660db3047cd306cd056e4361180cebb4d0f10a39244e10c11422
 F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
-F src/wal.c 887fc4ca3f020ebb2e376f222069570834ac63bf50111ef0cbf3ae417048ed89
+F src/wal.c a0d42bfdef935e1389737152394d08e59e7c48697f40a9fc2e0552cb19dc731f
 F src/wal.h ba252daaa94f889f4b2c17c027e823d9be47ce39da1d3799886bbd51f0490452
 F src/walker.c d5006d6b005e4ea7302ad390957a8d41ed83faa177e412f89bc5600a7462a014
-F src/where.c c046dd58c3410f7b7528e1e6317cb876398557bad346d568ed8562321a7d002d
+F src/where.c 461d41017d900d4248a268df96d2d30506c4dcc2257f4167c4f46072003ce2cf
 F src/whereInt.h a5d079c346a658b7a6e9e47bb943d021e02fa1e6aed3b964ca112112a4892192
 F src/wherecode.c 5172d647798134e7c92536ddffe7e530c393d79b5dedd648b88faf2646c65baf
 F src/whereexpr.c 44f41ae554c7572e1de1485b3169b233ee04d464b2ee5881687ede3bf07cacfa
@@ -905,7 +908,7 @@ F test/async2.test c0a9bd20816d7d6a2ceca7b8c03d3d69c28ffb8b
 F test/async3.test d73a062002376d7edc1fe3edff493edbec1fc2f7
 F test/async4.test 1787e3952128aa10238bf39945126de7ca23685a
 F test/async5.test 383ab533fdb9f7ad228cc99ee66e1acb34cc0dc0
-F test/atof1.test f2765d7fdc1348ae58b279d096d301a208e46da623213877b2ba580dc2768975
+F test/atof1.test 7ec56debc04b32e8f9dc87239f4bbb07d84550fb83dd7475b0ead9e83beb35da
 F test/atomic.test 065a453dde33c77ff586d91ccaa6ed419829d492dbb1a5694b8a09f3f9d7d061
 F test/atomic2.test b6863b4aa552543874f80b42fb3063f1c8c2e3d8e56b6562f00a3cc347b5c1da
 F test/atrc.c c388fac43dbba05c804432a7135ae688b32e8f25818e9994ffba4b64cf60c27c
@@ -988,7 +991,7 @@ F test/capi3c.test 31d3a6778f2d06f2d9222bd7660c41a516d1518a059b069e96ebbeadb5a49
 F test/capi3d.test 8b778794af891b0dca3d900bd345fbc8ebd2aa2aae425a9dccdd10d5233dfbde
 F test/capi3e.test 3d49c01ef2a1a55f41d73cba2b23b5059ec460fe
 F test/carray01.test 23ed7074307c4a829ba5ff2970993a9d87db7c5cdbbe1a2cbef672d0df6d6e31
-F test/cast.test 42f7d79d88ab5e8080e96c650c52fcf72eef3e6476aaaee2c9f6e074396cfdfc
+F test/cast.test 6d095303492432a973e6dfc0071cb94cac2969ffbe2e6a68432be0c7b3b0a2d3
 F test/cffault.test 9d6b20606afe712374952eec4f8fd74b1a8097ef
 F test/changes.test 4377d202a487f66fc2822c1bf57c46798c8b2caf7446f4f701723b1dbb6b86f6
 F test/changes2.test 07949edcc732af28cb54276bfb7d99723bccc1e905a423648bf57ac5cb0dc792
@@ -1152,7 +1155,7 @@ F test/fkey8.test 51deda7f1a1448bca95875e4a6e1a3a75b4bd7215e924e845bd60de60e4d84
 F test/fkey_malloc.test 594a7ea1fbab553c036c70813cd8bd9407d63749
 F test/fordelete.test ba98f14446b310f9c9d935b97ec748753d0144a28b356ba30d1f4f6958fdde5c
 F test/format4.test eeae341953db8b6bda7f549044797c3278a6cc345d11ada81471671b654f8ef4
-F test/fp-speed-1.c ca95152d579530c967240ead1387dc1208052d310dfa22bc9ebded56d4e6c026
+F test/fp-speed-1.c b37de94eba034e1703668816225f54510ec60fb0685406608cc707afe6b8234d
 F test/fpconv1.test d5d8aa0c427533006c112fb1957cdd1ea68c1d0709470dabb9ca02c2e4c06ad8
 F test/fts-9fd058691.test 78b887e30ae6816df0e1fed6259de4b5a64ad33c
 F test/fts3.test 672a040ea57036fb4b6fdc09027c18d7d24ab654
@@ -1183,7 +1186,7 @@ F test/fts3conf.test c9cd45433b6787d48a43e84949aa2eb8b3b3d242bac7276731c1476290d
 F test/fts3corrupt.test 6732477c5ace050c5758a40a8b5706c8c0cccd416b9c558e0e15224805a40e57
 F test/fts3corrupt2.test e318f0676e5e78d5a4b702637e2bb25265954c08a1b1e4aaf93c7880bb0c67d0
 F test/fts3corrupt3.test 0d5b69a0998b4adf868cc301fc78f3d0707745f1d984ce044c205cdb764b491f
-F test/fts3corrupt4.test 48bd57baed9654e511709a02dbef2d22ee54c012ad466e8648f0f825233faa08
+F test/fts3corrupt4.test a451033ae31db9c5979a7612dee80fb4f221db104a2eeeabd1c9adcc8e8fe95a
 F test/fts3corrupt5.test 0549f85ec4bd22e992f645f13c59b99d652f2f5e643dac75568bfd23a6db7ed5
 F test/fts3corrupt6.test f417c910254f32c0bc9ead7affa991a1d5aec35b3b32a183ffb05eea78289525
 F test/fts3cov.test 7eacdbefd756cfa4dc2241974e3db2834e9b372ca215880e00032222f32194cf
@@ -1250,10 +1253,10 @@ F test/fts4umlaut.test fcaca4471de7e78c9d1f7e8976e3e8704d7d8ad979d57a739d00f3f75
 F test/fts4unicode.test 82a9c16b68ba2f358a856226bb2ee02f81583797bc4744061c54401bf1a0f4c9
 F test/fts4upfrom.test f25835162c989dffd5e2ef91ec24c4848cc9973093e2d492d1c7b32afac1b49d
 F test/full.test 6b3c8fb43c6beab6b95438c1675374b95fab245d
-F test/func.test b56905748ce0567c01d60005f3e6ad1af19453d224ba4730ee687d048fd09ef9
+F test/func.test 098d28ecd1284e0625797a981c9dbf7c1664763af2900f96b9716af80e6cbe40
 F test/func2.test 69f6ae3751b4ec765bdc3b803c0a255aa0f693f28f44805bef03e6b4a3fd242f
 F test/func3.test 600a632c305a88f3946d38f9a51efe145c989b2e13bd2b2a488db47fe76bab6a
-F test/func4.test a3f9062487dbd826776f54f4e0e9517fe8c3cf689af92735308965774d51fac5
+F test/func4.test a02e695f62beb31cb092dccf6873ff97543407fff97a5f3ec4da70b5b337bc84
 F test/func5.test 863e6d1bd0013d09c17236f8a13ea34008dd857d87d85a13a673960e4c25d82a
 F test/func6.test 3bc89ec0f2605736d3a118f43d25ef58115a7db4dba8ae939a363917d815c0bb
 F test/func7.test 7e009275f52c52954c8c028fdb62f8bc16cc47276fcc8753c1d2b22c6e074598
@@ -1266,7 +1269,7 @@ F test/fuzz3.test 70ba57260364b83e964707b9d4b5625284239768ab907dd387c740c0370ce3
 F test/fuzz4.test c229bcdb45518a89e1d208a21343e061503460ac69fae1539320a89f572eb634
 F test/fuzz_common.tcl b7197de6ed1ee8250a4f82d67876f4561b42ee8cbbfc6160dcb66331bad3f830
 F test/fuzz_malloc.test f348276e732e814802e39f042b1f6da6362a610af73a528d8f76898fde6b22f2
-F test/fuzzcheck.c 20be6c96bd0da2e91d25f089a037c1b3f8142211c97104f20629bf15610019e6
+F test/fuzzcheck.c 89b71d92b150a532e945e489d6e0721a4b15353c9255e079c198ed2a1958018b
 F test/fuzzdata1.db 3e86d9cf5aea68ddb8e27c02d7dfdaa226347426c7eb814918e4d95475bf8517
 F test/fuzzdata2.db 128b3feeb78918d075c9b14b48610145a0dd4c8d6f1ca7c2870c7e425f5bf31f
 F test/fuzzdata3.db c6586d3e3cef0fbc18108f9bb649aa77bfc38aba
@@ -1278,14 +1281,14 @@ F test/fuzzdata8.db 4a53b6d077c6a5c23b609d8d3ac66996fa55ba3f8d02f9b6efdd0214a767
 F test/fuzzer1.test 3d4c4b7e547aba5e5511a2991e3e3d07166cfbb8
 F test/fuzzer2.test a85ef814ce071293bce1ad8dffa217cbbaad4c14
 F test/fuzzerfault.test f64c4aef4c9e9edf1d6dc0d3f1e65dcc81e67c996403c88d14f09b74807a42bc
-F test/fuzzinvariants.c 81167c9a7e82c0539a1d704aeb3384046d01f4108cda160a2447cb2a149d6362
+F test/fuzzinvariants.c 057e910241d85aa4aaf75cef1a7adc45c632b173288d07d9dbbef4e6bda83d5a
 F test/gcfault.test 4ea410ac161e685f17b19e1f606f58514a2850e806c65b846d05f60d436c5b0d
 F test/gencol1.test e169bdfa11c7ed5e9f322a98a7db3afe9e66235750b68c923efee8e1876b46ec
 F test/genesis.tcl 1e2e2e8e5cc4058549a154ff1892fe5c9de19f98
 F test/having.test a89236dd8d55aa50c4805f82ac9daf64d477a44d712d8209c118978d0ca21ec9
 F test/hexlit.test 4a6a5f46e3c65c4bf1fa06f5dd5a9507a5627751
 F test/hidden.test 23c1393a79e846d68fd902d72c85d5e5dcf98711
-F test/hook.test 18cae9140fa7f9a6f346e892a3fe3e31b2ca0be1494cd01b918adb74281016a6
+F test/hook.test 3481a68009fe143e3363fca922f6fc7a1e1f3776c51e42777f1a01b26ad2a9c8
 F test/hook2.test b9ff3b8c6519fb67f33192f1afe86e7782ee4ac8
 F test/icu.test 8da7d52cd9722c82f33b0466ed915460cb03c23a38f18a9a2d3ff97da9a4a8c0
 F test/ieee754.test b0945d12be7d255f3dfa18e2511b17ca37e0edd2b803231c52d05b86c04ab26e
@@ -1345,7 +1348,7 @@ F test/ioerr5.test 5984da7bf74b6540aa356f2ab0c6ae68a6d12039a3d798a9ac6a100abc17d
 F test/ioerr6.test a395a6ab144b26a9e3e21059a1ab6a7149cca65b
 F test/istrue.test e7f285bb70282625c258e866ce6337d4c762922f5a300e1b50f958aef6e7d9c9
 F test/join.test f7abfef3faeaf2800308872e33a57e5b6e4a2b44fb8c6b90c6068412e71a6cf4
-F test/join2.test 8561fe82ce434ac96de91544072e578dc2cadddf2d9bc9cd802f866a9b92502e
+F test/join2.test f59d63264fb24784ae9c3bc9d867eb569cd6d442da5660f8852effe5c1938c27
 F test/join3.test 6f0c774ff1ba0489e6c88a3e77b9d3528fb4fda0
 F test/join4.test 1a352e4e267114444c29266ce79e941af5885916
 F test/join5.test 380d12a9350f99f0cc681a4f1fea999886f18b3fe0d71a9b3065bcaead1e007f
@@ -1380,7 +1383,7 @@ F test/json106.test 4aed3afd16549045d198a8d9cea00deea96e1f2ecf55864dce96cac558b8
 F test/json107.test 59054e815c8f6b67d634d44ace421cf975828fb5651c4460aa66015c8e19d562
 F test/json108.test 0a5f1e2d4b35a1bc33052563d2a5ede03052e2099e58cb424547656c898e0f49
 F test/json501.test b95e2d14988b682a5cadf079dd6162f0f85fb74cd59c6b1f1624110104a974eb
-F test/json502.test 84634d3dbb521d2814e43624025b760c6198456c8197bbec6c977c0236648f5b
+F test/json502.test 4ef68e4f272dfb083d4cbceb4e9e51d67ec1186a185e0c13637c50a4dc2f9796
 F test/jsonb01.test f4cdfb4cf5a0c940091b17675ed9583f45add0c938f07d65b0de0e19d3a9a101
 F test/keyword1.test 37ef6bba5d2ed5b07ecdd6810571de2956599dff
 F test/kvtest.c 6e0228409ea7ca0497dad503fbd109badb5e59545d131014b6aaac68b56f484a
@@ -1625,7 +1628,7 @@ F test/sharedA.test 64bdd21216dda2c6a3bd3475348ccdc108160f34682c97f2f51c19fc0e21
 F test/sharedB.test 1a84863d7a2204e0d42f2e1606577c5e92e4473fa37ea0f5bdf829e4bf8ee707
 F test/shared_err.test 32634e404a3317eeb94abc7a099c556a346fdb8fb3858dbe222a4cbb8926a939
 F test/sharedlock.test 5ede3c37439067c43b0198f580fd374ebf15d304
-F test/shell1.test 490bf9d0c7c9564fea318c46d49369f4690b825b584c9a544dbdccf61bc0babc
+F test/shell1.test b02d628494fa284cdb2b7b2fecdadea96913796afd623f340a79d68f055dcb7e
 F test/shell2.test 01a01f76ed98088ce598794fbf5b359e148271541a8ddbf79d21cc353cc67a24
 F test/shell3.test db1953a8e59d08e9240b7cc5948878e184f7eb2623591587f8fd1f1a5bd536d8
 F test/shell4.test 522fdc628c55eff697b061504fb0a9e4e6dfc5d9087a633ab0f3dd11bcc4f807
@@ -1646,7 +1649,7 @@ F test/skipscan5.test 0672103fd2c8f96bd114133f356192b35ece45c794fe3677e1d9e5e310
 F test/skipscan6.test bddbb35dd335e2d21b7791a61e3b2e1f3255dc307ce80aa6fe19cc298e6feb13
 F test/snapshot.test a504f2e7009f512ef66c719f0ea1c55a556bdaf1e1312c80a04d46fc1a3e9632
 F test/snapshot2.test 8d6ff5dd9cc503f6e12d408a30409c3f9c653507b24408d9cd7195931c89bc54
-F test/snapshot3.test 8744313270c55f6e18574283553d3c5c5fe4c5970585663613a0e75c151e599b
+F test/snapshot3.test 41350216abc6c7da37113ad462259c070786e5ad70bdc8709daaed148b1b3a2c
 F test/snapshot4.test d4e9347ef2fcabc491fc893506c7bbaf334da3be111d6eb4f3a97cc623b78322
 F test/snapshot_fault.test 129234ceb9b26a0e1000e8563a16e790f5c1412354e70749cbd78c3d5d07d60a
 F test/snapshot_up.test 77dc7853bfb2b4fa249f76e1714cfa1e596826165d9ef22c06ac3a0b7b778d9a
@@ -1667,7 +1670,7 @@ F test/speed3.test 694affeb9100526007436334cf7d08f3d74b85ef
 F test/speed4.test abc0ad3399dcf9703abed2fff8705e4f8e416715
 F test/speed4p.explain 6b5f104ebeb34a038b2f714150f51d01143e59aa
 F test/speed4p.test 377a0c48e5a92e0b11c1c5ebb1bc9d83a7312c922bc0cb05970ef5d6a96d1f0c
-F test/speedtest1.c 19c9b60908d25502d2831f97efee8b81006c356ab8c08327e25d24a4144f2131
+F test/speedtest1.c cc503febbb8559d541a67d7a33d3d7bb8a2c8cbbfc89eb336e2e2bd6ad6a63ee
 F test/spellfix.test 951a6405d49d1a23d6b78027d3877b4a33eeb8221dcab5704b499755bb4f552e
 F test/spellfix2.test dfc8f519a3fc204cb2dfa8b4f29821ae90f6f8c3
 F test/spellfix3.test 0f9efaaa502a0e0a09848028518a6fb096c8ad33
@@ -1713,9 +1716,9 @@ F test/temptable.test d2c9b87a54147161bcd1822e30c1d1cd891e5b30
 F test/temptable2.test 76821347810ecc88203e6ef0dd6897b6036ac788e9dd3e6b04fd4d1631311a16
 F test/temptable3.test d11a0974e52b347e45ee54ef1923c91ed91e4637
 F test/temptrigger.test 38f0ca479b1822d3117069e014daabcaacefffcc
-F test/tester.tcl 2c203a2dd664298f239f0ec3ce22fbc65b5f021c1e09edbae8452af8a694e052
-F test/testrunner.tcl 662af46f1f0a41eb197f17583698853dd130ff3d47cf136dd519c3aecd9a9d7d
-F test/testrunner_data.tcl d64e69aba227492fc459eb0f6a88c3e1b252bd9323847b7e8bcf5e1faa358714
+F test/tester.tcl 7b44f1a9b9a2de8112695b908afc21dd9a68cd2d44e84b73f1b27b53492c0d59
+F test/testrunner.tcl 3dd75b45593d2afa2e3bca76121297a9f163bebb98474b13536f326829a71db1 x
+F test/testrunner_data.tcl c7b3b911e44f7e8c01cc6bc7571e16115cdc2e4db46630bd2acd7a931a46380e
 F test/thread001.test a0985c117eab62c0c65526e9fa5d1360dd1cac5b03bde223902763274ce21899
 F test/thread002.test c24c83408e35ba5a952a3638b7ac03ccdf1ce4409289c54a050ac4c5f1de7502
 F test/thread003.test ee4c9efc3b86a6a2767516a37bd64251272560a7
@@ -2050,7 +2053,7 @@ F test/wherelimit3.test 22d73e046870cf8bbe15573eda6b432b07ebe64a88711f9f849c6b36
 F test/widetab1.test c296a98e123762de79917350e45fa33fdf88577a2571eb3a64c8bf7e44ef74d1
 F test/win32heap.test 10fd891266bd00af68671e702317726375e5407561d859be1aa04696f2aeee74
 F test/win32lock.test e0924eb8daac02bf80e9da88930747bd44dd9b230b7759fed927b1655b467c9c
-F test/win32longpath.test 42210789bcfc5c0ac202643d6d0237db08df2c9218f2070d9a69e8af1eccf7d7
+F test/win32longpath.test 304006024ca47104bf5a7415ef31ca83ecfc29351af202baf8588b880cffc116
 F test/win32nolock.test ac4f08811a562e45a5755e661f45ca85892bdbbc
 F test/window1.test 79dc3b9a2226f622d7e104a1fc750d1c4c3c08d6147b59085bdbe05352947ffa
 F test/window2.tcl 492c125fa550cda1dd3555768a2303b3effbeceee215293adf8871efc25f1476
@@ -2101,7 +2104,7 @@ F tool/GetFile.cs 47852aa0d806fe47ed1ac5138bdce7f000fe87aaa7f28107d0cb1e26682aeb
 F tool/GetTclKit.bat d84033c6a93dfe735d247f48ba00292a1cc284dcf69963e5e672444e04534bbf
 F tool/Replace.cs 02c67258801c2fb5f63231e0ac0f220b4b36ba91
 F tool/build-all-msvc.bat c817b716e0edeecaf265a6775b63e5f45c34a6544f1d4114a222701ed5ac79ab x
-F tool/build-shell.sh f193b5e3eb4afcb4abbf96bf1475be6cfb74763ee2e50c82bc7ca105e8a136c5
+F tool/build-shell.sh 369c4b171cc877ad974fef691e4da782b4c1e99fe8f4361316c735f64d49280f
 F tool/buildtclext.tcl b64d250517b148e644d26fcbc097851867a0df52cd4bafe9bcd94b8421e1428a
 F tool/cg_anno.tcl c1f875f5a4c9caca3d59937b16aff716f8b1883935f1b4c9ae23124705bc8099 x
 F tool/checkSpacing.c 810e51703529a204fc4e1eb060e9ab663e3c06d2
@@ -2151,20 +2154,20 @@ F tool/offsets.c 8ed2b344d33f06e71366a9b93ccedaa38c096cc1dbd4c3c26ad08c611528584
 F tool/omittest-msvc.tcl d6b8f501ac1d7798c4126065030f89812379012cad98a1735d6d7221492abc08
 F tool/omittest.tcl 5ca5e4e01716d5f35b48b00fd351d929f01fbb98169a5a3cd00baf3d2e2019a9
 F tool/opcodesum.tcl 740ed206ba8c5040018988129abbf3089a0ccf4a
-F tool/pagesig.c ff0ca355fd3c2398e933da5e22439bbff89b803b
+F tool/pagesig.c f98909b4168d9cac11a2de7f031adea0e2f3131faa7515a72807c03ec58eafeb
 F tool/replace.tcl 511c61acfe563dfb58675efb4628bb158a13d48ff8322123ac447e9d25a82d9a
 F tool/restore_jrnl.tcl 1079ecba47cc82fa82115b81c1f68097ab1f956f357ee8da5fc4b2589af6bd98
 F tool/rollback-test.c 9fc98427d1e23e84429d7e6d07d9094fbdec65a5
 F tool/run-speed-test.sh f95d19fd669b68c4c38b6b475242841d47c66076
-F tool/showdb.c 0f74b54cc67076c76cba9b2b7f54d3e05b78d130c70ffc394eb84c5b41bab017
+F tool/showdb.c 81b04bfaa9a63665f75945947323aa68b820570aa156b1574f440fc8276092c6
 F tool/showjournal.c 5bad7ae8784a43d2b270d953060423b8bd480818
 F tool/showlocks.c 9cc5e66d4ebbf2d194f39db2527ece92077e86ae627ddd233ee48e16e8142564
 F tool/showshm.c a0ab6ec32dd1f11218ca2a4018f8fb875b59414801ab8ceed8b2e69b7b45a809
 F tool/showstat4.c 0682ebea7abf4d3657f53c4a243f2e7eab48eab344ed36a94bb75dcd19a5c2a1
 F tool/showwal.c 11eca547980a066b081f512636151233350ac679f29ecf4ebfce7f4530230b3d
 F tool/soak1.tcl 8d407956e1a45b485a8e072470a3e629a27037fe
-F tool/spaceanal.tcl 3568b2b15b83dcaf789e787a4db0980da81eb6fa0e1e00783e4a927fdf584550
-F tool/speed-check.sh e8d20cc2eb9c85ec1ba562226de144435456dcdff4ee618de49603c6958f6116
+F tool/spaceanal.tcl 1f83962090a6b60e1d7bf92495d643e622bef9fe82ea3f2d22350dcbce9a12d0
+F tool/speed-check.sh e566ab3934d7d78631743a984ad3f67c331c911bb18ff5d0a6c616a2afee7f91
 F tool/speedtest.tcl 06c76698485ccf597b9e7dbb1ac70706eb873355
 F tool/speedtest16.c ecb6542862151c3e6509bbc00509b234562ae81e
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
@@ -2172,8 +2175,9 @@ F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 7ce07da76b5e745783e703a834417d725b7d45fd
 F tool/spellsift.tcl 52b4b04dc4333c7ab024f09d9d66ed6b6f7c6eb00b38497a09f338fa55d40618 x
 F tool/split-sqlite3c.tcl 5aa60643afca558bc732b1444ae81a522326f91e1dc5665b369c54f09e20de60
-F tool/sqldiff.c 847fc8fcfddf5ce4797b7394cad6372f2f5dc17d8186e2ef8fb44d50fae4f44a
-F tool/sqlite3_analyzer.c.in 8da2b08f56eeac331a715036cf707cc20f879f231362be0c22efd682e2b89b4f
+F tool/sqldiff.c 2a0987d183027c795ced13d6749061c1d2f38e24eddb428f56fa64c3a8f51e4b
+F tool/sqlite3-rsync.c 7c78ba15afa0b929604adb91c94af8dbdf8cbe87be8a5cba5353af0e320ca65a
+F tool/sqlite3_analyzer.c.in 348ba349bbdc93c9866439f9f935d7284866a2a4e6898bc906ae1204ade56918
 F tool/sqltclsh.c.in 1bcc2e9da58fadf17b0bf6a50e68c1159e602ce057210b655d50bad5aaaef898
 F tool/sqltclsh.tcl 862f4cf1418df5e1315b5db3b5ebe88969e2a784525af5fbf9596592f14ed848
 F tool/src-verify.c 41c586dee84d0b190ad13e0282ed83d4a65ec9fefde9adf4943efdf6558eea7f
@@ -2211,8 +2215,8 @@ F vsixtest/vsixtest.tcl 6195aba1f12a5e10efc2b8c0009532167be5e301abe5b31385638080
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 3b1cdddf8339cc339ec74cd8be2bfa42e62b500048a444eb9e5d9817bc4702ae
-R a80c34160df19b1603ad0e7833a0d0c3
+P 37d3b6b17e92b2c760239c3053bbc7fb85091acd688c54a73af7611fe9501312
+R dbb5b993debce35e50244d3495f9b61e
 U drh
-Z baa1dd0d6096edf0ada0dc3da2ddafed
+Z 45e873ac682d74f4a4a29dbca970bb7d
 # Remove this line to create a well-formed Fossil manifest.
@@ -1 +1 @@
-e1bca168e70335fa2f9537632fd16e374c566a564fab4974c0b8f61cb63d08ce
+aa9bd711cc1b0136098388976d22adc0a2fc89f50fe2273ed80ee3e4e50c98b6
@@ -28,7 +28,13 @@
 **
 ** The data field of sqlite_dbpage table can be updated.  The new
 ** value must be a BLOB which is the correct page size, otherwise the
-** update fails.  Rows may not be deleted or inserted.
+** update fails.  INSERT operations also work, and operate as if they
+** where REPLACE.  The size of the database can be extended by INSERT-ing
+** new pages on the end.
+**
+** Rows may not be deleted.  However, doing an INSERT to page number N
+** with NULL page data causes the N-th page and all subsequent pages to be
+** deleted and the database to be truncated.
 */

 #include "sqliteInt.h"   /* Requires access to internal data structures */
@@ -51,6 +57,8 @@ struct DbpageCursor {
 struct DbpageTable {
  sqlite3_vtab base;              /* Base class.  Must be first */
  sqlite3 *db;                    /* The database */
+  int iDbTrunc;                   /* Database to truncate */
+  Pgno pgnoTrunc;                 /* Size to truncate to */
 };

 /* Columns */
@@ -59,7 +67,6 @@ struct DbpageTable {
 #define DBPAGE_COLUMN_SCHEMA  2


-
 /*
 ** Connect to or create a dbpagevfs virtual table.
 */
@@ -321,11 +328,11 @@ static int dbpageUpdate(
  DbPage *pDbPage = 0;
  int rc = SQLITE_OK;
  char *zErr = 0;
-  const char *zSchema;
  int iDb;
  Btree *pBt;
  Pager *pPager;
  int szPage;
+  int isInsert;

  (void)pRowid;
  if( pTab->db->flags & SQLITE_Defensive ){
@@ -336,21 +343,29 @@ static int dbpageUpdate(
    zErr = "cannot delete";
    goto update_fail;
  }
-  pgno = sqlite3_value_int(argv[0]);
-  if( sqlite3_value_type(argv[0])==SQLITE_NULL
-   || (Pgno)sqlite3_value_int(argv[1])!=pgno
-  ){
-    zErr = "cannot insert";
-    goto update_fail;
+  if( sqlite3_value_type(argv[0])==SQLITE_NULL ){
+    pgno = (Pgno)sqlite3_value_int(argv[2]);
+    isInsert = 1;
+  }else{
+    pgno = sqlite3_value_int(argv[0]);
+    if( (Pgno)sqlite3_value_int(argv[1])!=pgno ){
+      zErr = "cannot insert";
+      goto update_fail;
+    }
+    isInsert = 0;
  }
-  zSchema = (const char*)sqlite3_value_text(argv[4]);
-  iDb = ALWAYS(zSchema) ? sqlite3FindDbName(pTab->db, zSchema) : -1;
-  if( NEVER(iDb<0) ){
-    zErr = "no such schema";
-    goto update_fail;
+  if( sqlite3_value_type(argv[4])==SQLITE_NULL ){
+    iDb = 0;
+  }else{
+    const char *zSchema = (const char*)sqlite3_value_text(argv[4]);
+    iDb = sqlite3FindDbName(pTab->db, zSchema);
+    if( iDb<0 ){
+      zErr = "no such schema";
+      goto update_fail;
+    }
  }
  pBt = pTab->db->aDb[iDb].pBt;
-  if( NEVER(pgno<1) || NEVER(pBt==0) || NEVER(pgno>sqlite3BtreeLastPage(pBt)) ){
+  if( pgno<1 || NEVER(pBt==0) ){
    zErr = "bad page number";
    goto update_fail;
  }
@@ -358,18 +373,25 @@ static int dbpageUpdate(
  if( sqlite3_value_type(argv[3])!=SQLITE_BLOB 
   || sqlite3_value_bytes(argv[3])!=szPage
  ){
-    zErr = "bad page value";
-    goto update_fail;
+    if( sqlite3_value_type(argv[3])==SQLITE_NULL && isInsert && pgno>1 ){
+      /* "INSERT INTO dbpage($PGNO,NULL)" causes page number $PGNO and
+      ** all subsequent pages to be deleted. */
+      pTab->iDbTrunc = iDb;
+      pgno--;
+      pTab->pgnoTrunc = pgno;
+    }else{
+      zErr = "bad page value";
+      goto update_fail;
+    }
  }
  pPager = sqlite3BtreePager(pBt);
  rc = sqlite3PagerGet(pPager, pgno, (DbPage**)&pDbPage, 0);
  if( rc==SQLITE_OK ){
    const void *pData = sqlite3_value_blob(argv[3]);
-    assert( pData!=0 || pTab->db->mallocFailed );
-    if( pData
-     && (rc = sqlite3PagerWrite(pDbPage))==SQLITE_OK
-    ){
-      memcpy(sqlite3PagerGetData(pDbPage), pData, szPage);
+    if( (rc = sqlite3PagerWrite(pDbPage))==SQLITE_OK && pData ){
+      unsigned char *aPage = sqlite3PagerGetData(pDbPage);
+      memcpy(aPage, pData, szPage);
+      pTab->pgnoTrunc = 0;
    }
  }
  sqlite3PagerUnref(pDbPage);
@@ -393,9 +415,31 @@ static int dbpageBegin(sqlite3_vtab *pVtab){
    Btree *pBt = db->aDb[i].pBt;
    if( pBt ) (void)sqlite3BtreeBeginTrans(pBt, 1, 0);
  }
+  pTab->pgnoTrunc = 0;
  return SQLITE_OK;
 }

+/* Invoke sqlite3PagerTruncate() as necessary, just prior to COMMIT
+*/
+static int dbpageSync(sqlite3_vtab *pVtab){
+  DbpageTable *pTab = (DbpageTable *)pVtab;
+  if( pTab->pgnoTrunc>0 ){
+    Btree *pBt = pTab->db->aDb[pTab->iDbTrunc].pBt;
+    Pager *pPager = sqlite3BtreePager(pBt);
+    sqlite3PagerTruncateImage(pPager, pTab->pgnoTrunc);
+  }
+  pTab->pgnoTrunc = 0;
+  return SQLITE_OK;
+}
+
+/* Cancel any pending truncate.
+*/
+static int dbpageRollbackTo(sqlite3_vtab *pVtab, int notUsed1){
+  DbpageTable *pTab = (DbpageTable *)pVtab;
+  pTab->pgnoTrunc = 0;
+  (void)notUsed1;
+  return SQLITE_OK;
+}

 /*
 ** Invoke this routine to register the "dbpage" virtual table module
@@ -417,14 +461,14 @@ int sqlite3DbpageRegister(sqlite3 *db){
    dbpageRowid,                  /* xRowid - read data */
    dbpageUpdate,                 /* xUpdate */
    dbpageBegin,                  /* xBegin */
-    0,                            /* xSync */
+    dbpageSync,                   /* xSync */
    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindMethod */
    0,                            /* xRename */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
-    0,                            /* xRollbackTo */
+    dbpageRollbackTo,             /* xRollbackTo */
    0,                            /* xShadowName */
    0                             /* xIntegrity */
  };
@@ -75,6 +75,7 @@ void sqlite3CodeChangeCount(Vdbe *v, int regCounter, const char *zColName){
 **      is for a top-level SQL statement.
 */
 static int vtabIsReadOnly(Parse *pParse, Table *pTab){
+  assert( IsVirtual(pTab) );
  if( sqlite3GetVTable(pParse->db, pTab)->pMod->pModule->xUpdate==0 ){
    return 1;
  }
@@ -2535,7 +2535,13 @@ static void signFunc(
 ** Implementation of fpdecode(x,y,z) function.
 **
 ** x is a real number that is to be decoded.  y is the precision.
-** z is the maximum real precision.
+** z is the maximum real precision.  Return a string that shows the
+** results of the sqlite3FpDecode() function.
+**
+** Used for testing and debugging only, specifically testing and debugging
+** of the sqlite3FpDecode() function.  This SQL function does not appear
+** in production builds.  This function is not an API and is subject to
+** modification or removal in future versions of SQLite.
 */
 static void fpdecodeFunc(
  sqlite3_context *context,
@@ -2562,6 +2568,82 @@ static void fpdecodeFunc(
 }
 #endif /* SQLITE_DEBUG */

+#ifdef SQLITE_DEBUG
+/*
+** Implementation of parseuri(uri,flags) function.
+**
+** Required Arguments:
+**    "uri"        The URI to parse.
+**    "flags"      Bitmask of flags, as if to sqlite3_open_v2().
+**
+** Additional arguments beyond the first two make calls to
+** sqlite3_uri_key() for integers and sqlite3_uri_parameter for
+** anything else.
+**
+** The result is a string showing the results of calling sqlite3ParseUri().
+**
+** Used for testing and debugging only, specifically testing and debugging
+** of the sqlite3ParseUri() function.  This SQL function does not appear
+** in production builds.  This function is not an API and is subject to
+** modification or removal in future versions of SQLite.
+*/
+static void parseuriFunc(
+  sqlite3_context *ctx,
+  int argc,
+  sqlite3_value **argv
+){
+  sqlite3_str *pResult;
+  const char *zVfs;
+  const char *zUri;
+  unsigned int flgs;
+  int rc;
+  sqlite3_vfs *pVfs = 0;
+  char *zFile = 0;
+  char *zErr = 0;
+
+  if( argc<2 ) return;
+  pVfs = sqlite3_vfs_find(0);
+  assert( pVfs );
+  zVfs = pVfs->zName;
+  zUri = (const char*)sqlite3_value_text(argv[0]);
+  if( zUri==0 ) return;
+  flgs = (unsigned int)sqlite3_value_int(argv[1]);
+  rc = sqlite3ParseUri(zVfs, zUri, &flgs, &pVfs, &zFile, &zErr);
+  pResult = sqlite3_str_new(0);
+  if( pResult ){
+    int i;
+    sqlite3_str_appendf(pResult, "rc=%d", rc);
+    sqlite3_str_appendf(pResult, ", flags=0x%x", flgs);
+    sqlite3_str_appendf(pResult, ", vfs=%Q", pVfs ? pVfs->zName: 0);
+    sqlite3_str_appendf(pResult, ", err=%Q", zErr);
+    sqlite3_str_appendf(pResult, ", file=%Q", zFile);
+    if( zFile ){
+      const char *z = zFile;
+      z += sqlite3Strlen30(z)+1;
+      while( z[0] ){
+        sqlite3_str_appendf(pResult, ", %Q", z);
+        z += sqlite3Strlen30(z)+1;
+      }
+      for(i=2; i<argc; i++){
+        const char *zArg;
+        if( sqlite3_value_type(argv[i])==SQLITE_INTEGER ){
+          int k = sqlite3_value_int(argv[i]);
+          sqlite3_str_appendf(pResult, ", '%d:%q'",k,sqlite3_uri_key(zFile, k));
+        }else if( (zArg = (const char*)sqlite3_value_text(argv[i]))!=0 ){
+          sqlite3_str_appendf(pResult, ", '%q:%q'",
+                 zArg, sqlite3_uri_parameter(zFile,zArg));
+        }else{
+          sqlite3_str_appendf(pResult, ", NULL");
+        }
+      }
+    }
+    sqlite3_result_text(ctx, sqlite3_str_finish(pResult), -1, sqlite3_free);
+  }
+  sqlite3_free_filename(zFile);
+  sqlite3_free(zErr);
+}
+#endif /* SQLITE_DEBUG */
+
 /*
 ** All of the FuncDef structures in the aBuiltinFunc[] array above
 ** to the global function hash table.  This occurs at start-time (as
@@ -2635,6 +2717,7 @@ void sqlite3RegisterBuiltinFunctions(void){
    FUNCTION(abs,                1, 0, 0, absFunc          ),
 #ifdef SQLITE_DEBUG
    FUNCTION(fpdecode,           3, 0, 0, fpdecodeFunc     ),
+    FUNCTION(parseuri,          -1, 0, 0, parseuriFunc     ),
 #endif
 #ifndef SQLITE_OMIT_FLOATING_POINT
    FUNCTION(round,              1, 0, 0, roundFunc        ),
@@ -243,7 +243,6 @@ SQLITE_WSD struct Sqlite3Config sqlite3Config = {
   SQLITE_ALLOW_COVERING_INDEX_SCAN,   /* bUseCis */
   0,                         /* bSmallMalloc */
   1,                         /* bExtraSchemaChecks */
-   sizeof(LONGDOUBLE_TYPE)>8, /* bUseLongDouble */
 #ifdef SQLITE_DEBUG
   0,                         /* bJsonSelfcheck */
 #endif
@@ -2847,7 +2847,9 @@ static u32 jsonLookupStep(
    zPath++;
    if( zPath[0]=='"' ){
      zKey = zPath + 1;
-      for(i=1; zPath[i] && zPath[i]!='"'; i++){}
+      for(i=1; zPath[i] && zPath[i]!='"'; i++){
+        if( zPath[i]=='\\' && zPath[i+1]!=0 ) i++;
+      }
      nKey = i-1;
      if( zPath[i] ){
        i++;
@@ -159,32 +159,6 @@ char *sqlite3_temp_directory = 0;
 */
 char *sqlite3_data_directory = 0;

-/*
-** Determine whether or not high-precision (long double) floating point
-** math works correctly on CPU currently running.
-*/
-static SQLITE_NOINLINE int hasHighPrecisionDouble(int rc){
-  if( sizeof(LONGDOUBLE_TYPE)<=8 ){
-    /* If the size of "long double" is not more than 8, then
-    ** high-precision math is not possible. */
-    return 0;
-  }else{
-    /* Just because sizeof(long double)>8 does not mean that the underlying
-    ** hardware actually supports high-precision floating point.  For example,
-    ** clearing the 0x100 bit in the floating-point control word on Intel
-    ** processors will make long double work like double, even though long
-    ** double takes up more space.  The only way to determine if long double
-    ** actually works is to run an experiment. */
-    LONGDOUBLE_TYPE a, b, c;
-    rc++;
-    a = 1.0+rc*0.1;
-    b = 1.0e+18+rc*25.0;
-    c = a+b;
-    return b!=c;
-  }
-}
-
-
 /*
 ** Initialize SQLite. 
 **
@@ -379,13 +353,6 @@ int sqlite3_initialize(void){
    rc = SQLITE_EXTRA_INIT(0);
  }
 #endif
-
-  /* Experimentally determine if high-precision floating point is
-  ** available. */
-#ifndef SQLITE_OMIT_WSD
-  sqlite3Config.bUseLongDouble = hasHighPrecisionDouble(rc);
-#endif
-
  return rc;
 }

@@ -3482,6 +3449,7 @@ static int openDatabase(
  if( ((1<<(flags&7)) & 0x46)==0 ){
    rc = SQLITE_MISUSE_BKPT;  /* IMP: R-18321-05872 */
  }else{
+    if( zFilename==0 ) zFilename = ":memory:";
    rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg);
  }
  if( rc!=SQLITE_OK ){
@@ -4637,24 +4605,6 @@ int sqlite3_test_control(int op, ...){
      break;
    }

-#if !defined(SQLITE_OMIT_WSD)
-    /* sqlite3_test_control(SQLITE_TESTCTRL_USELONGDOUBLE, int X);
-    **
-    **   X<0     Make no changes to the bUseLongDouble.  Just report value.
-    **   X==0    Disable bUseLongDouble
-    **   X==1    Enable bUseLongDouble
-    **   X>=2    Set bUseLongDouble to its default value for this platform
-    */
-    case SQLITE_TESTCTRL_USELONGDOUBLE: {
-      int b = va_arg(ap, int);
-      if( b>=2 ) b = hasHighPrecisionDouble(b);
-      if( b>=0 ) sqlite3Config.bUseLongDouble = b>0;
-      rc = sqlite3Config.bUseLongDouble!=0;
-      break;
-    }
-#endif
-
-
 #if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_WSD)
    /* sqlite3_test_control(SQLITE_TESTCTRL_TUNE, id, *piValue)
    **
@@ -4962,7 +4912,11 @@ int sqlite3_snapshot_get(
    if( iDb==0 || iDb>1 ){
      Btree *pBt = db->aDb[iDb].pBt;
      if( SQLITE_TXN_WRITE!=sqlite3BtreeTxnState(pBt) ){
+        Pager *pPager = sqlite3BtreePager(pBt);
+        i64 dummy = 0;
+        sqlite3PagerSnapshotOpen(pPager, (sqlite3_snapshot*)&dummy);
        rc = sqlite3BtreeBeginTrans(pBt, 0, 0);
+        sqlite3PagerSnapshotOpen(pPager, 0);
        if( rc==SQLITE_OK ){
          rc = sqlite3PagerSnapshotGet(sqlite3BtreePager(pBt), ppSnapshot);
        }
@@ -347,15 +347,28 @@ void sqlite3_mutex_leave(sqlite3_mutex *p){
 /*
 ** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
 ** intended for use inside assert() statements.
+**
+** Because these routines raise false-positive alerts in TSAN, disable
+** them (make them always return 1) when compiling with TSAN.
 */
 int sqlite3_mutex_held(sqlite3_mutex *p){
+# if defined(__has_feature)
+#   if __has_feature(thread_sanitizer)
+      p = 0;
+#   endif
+# endif
  assert( p==0 || sqlite3GlobalConfig.mutex.xMutexHeld );
  return p==0 || sqlite3GlobalConfig.mutex.xMutexHeld(p);
 }
 int sqlite3_mutex_notheld(sqlite3_mutex *p){
+# if defined(__has_feature)
+#   if __has_feature(thread_sanitizer)
+      p = 0;
+#   endif
+# endif
  assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld );
  return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p);
 }
-#endif
+#endif /* NDEBUG */

 #endif /* !defined(SQLITE_MUTEX_OMIT) */
@@ -4159,7 +4159,7 @@ static void setDeviceCharacteristics(unixFile *pFd){
 static void setDeviceCharacteristics(unixFile *pFile){
  if( pFile->sectorSize == 0 ){
    struct statvfs fsInfo;
-     
+
    /* Set defaults for non-supported filesystems */
    pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE;
    pFile->deviceCharacteristics = 0;
@@ -4199,7 +4199,7 @@ static void setDeviceCharacteristics(unixFile *pFile){
      pFile->sectorSize = fsInfo.f_bsize;
      pFile->deviceCharacteristics =
        /* full bitset of atomics from max sector size and smaller */
-        ((pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) << 1) - 2 |
+        (((pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) << 1) - 2) |
        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
                                      ** so it is ordered */
        0;
@@ -4207,7 +4207,7 @@ static void setDeviceCharacteristics(unixFile *pFile){
      pFile->sectorSize = fsInfo.f_bsize;
      pFile->deviceCharacteristics =
        /* full bitset of atomics from max sector size and smaller */
-        ((pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) << 1) - 2 |
+        (((pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) << 1) - 2) |
        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
                                      ** so it is ordered */
        0;
@@ -1007,12 +1007,24 @@ static int sqlite3Prepare16(
  if( !sqlite3SafetyCheckOk(db)||zSql==0 ){
    return SQLITE_MISUSE_BKPT;
  }
+
+  /* Make sure nBytes is non-negative and correct.  It should be the
+  ** number of bytes until the end of the input buffer or until the first
+  ** U+0000 character.  If the input nBytes is odd, convert it into
+  ** an even number.  If the input nBytes is negative, then the input
+  ** must be terminated by at least one U+0000 character */
  if( nBytes>=0 ){
    int sz;
    const char *z = (const char*)zSql;
    for(sz=0; sz<nBytes && (z[sz]!=0 || z[sz+1]!=0); sz += 2){}
    nBytes = sz;
+  }else{
+    int sz;
+    const char *z = (const char*)zSql;
+    for(sz=0; z[sz]!=0 || z[sz+1]!=0; sz += 2){}
+    nBytes = sz;
  }
+
  sqlite3_mutex_enter(db->mutex);
  zSql8 = sqlite3Utf16to8(db, zSql, nBytes, SQLITE_UTF16NATIVE);
  if( zSql8 ){
@@ -1026,7 +1038,7 @@ static int sqlite3Prepare16(
    ** the same number of characters into the UTF-16 string.
    */
    int chars_parsed = sqlite3Utf8CharLen(zSql8, (int)(zTail8-zSql8));
-    *pzTail = (u8 *)zSql + sqlite3Utf16ByteLen(zSql, chars_parsed);
+    *pzTail = (u8 *)zSql + sqlite3Utf16ByteLen(zSql, nBytes, chars_parsed);
  }
  sqlite3DbFree(db, zSql8); 
  rc = sqlite3ApiExit(db, rc);
@@ -486,7 +486,7 @@ static int lookupName(
          */
          if( cntTab==0
           || (cntTab==1
-               && ALWAYS(pMatch!=0)
+               && pMatch!=0
               && ALWAYS(pMatch->pSTab!=0)
               && (pMatch->pSTab->tabFlags & TF_Ephemeral)!=0
               && (pTab->tabFlags & TF_Ephemeral)==0)
@@ -1119,8 +1119,8 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
    /* Resolve function names
    */
    case TK_FUNCTION: {
-      ExprList *pList = pExpr->x.pList;    /* The argument list */
-      int n = pList ? pList->nExpr : 0;    /* Number of arguments */
+      ExprList *pList;            /* The argument list */
+      int n;                      /* Number of arguments */
      int no_such_func = 0;       /* True if no such function exists */
      int wrong_num_args = 0;     /* True if wrong number of arguments */
      int is_agg = 0;             /* True if is an aggregate function */
@@ -1133,6 +1133,8 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
 #endif
      assert( !ExprHasProperty(pExpr, EP_xIsSelect|EP_IntValue) );
      assert( pExpr->pLeft==0 || pExpr->pLeft->op==TK_ORDER );
+      pList = pExpr->x.pList;
+      n = pList ? pList->nExpr : 0;
      zId = pExpr->u.zToken;
      pDef = sqlite3FindFunction(pParse->db, zId, n, enc, 0);
      if( pDef==0 ){
@@ -4222,13 +4222,17 @@ int sqlite3_limit(sqlite3*, int id, int newVal);
 ** and sqlite3_prepare16_v3() use UTF-16.
 **
 ** ^If the nByte argument is negative, then zSql is read up to the
-** first zero terminator. ^If nByte is positive, then it is the
-** number of bytes read from zSql.  ^If nByte is zero, then no prepared
+** first zero terminator. ^If nByte is positive, then it is the maximum
+** number of bytes read from zSql.  When nByte is positive, zSql is read
+** up to the first zero terminator or until the nByte bytes have been read,
+** whichever comes first.  ^If nByte is zero, then no prepared
 ** statement is generated.
 ** If the caller knows that the supplied string is nul-terminated, then
 ** there is a small performance advantage to passing an nByte parameter that
 ** is the number of bytes in the input string <i>including</i>
 ** the nul-terminator.
+** Note that nByte measure the length of the input in bytes, not
+** characters, even for the UTF-16 inferfaces.
 **
 ** ^If pzTail is not NULL then *pzTail is made to point to the first byte
 ** past the end of the first SQL statement in zSql.  These routines only
@@ -5599,7 +5603,7 @@ int sqlite3_create_window_function(
 ** This flag instructs SQLite to omit some corner-case optimizations that
 ** might disrupt the operation of the [sqlite3_value_subtype()] function,
 ** causing it to return zero rather than the correct subtype().
-** SQL functions that invokes [sqlite3_value_subtype()] should have this
+** All SQL functions that invoke [sqlite3_value_subtype()] should have this
 ** property.  If the SQLITE_SUBTYPE property is omitted, then the return
 ** value from [sqlite3_value_subtype()] might sometimes be zero even though
 ** a non-zero subtype was specified by the function argument expression.
@@ -8364,7 +8368,7 @@ int sqlite3_test_control(int op, ...);
 #define SQLITE_TESTCTRL_TRACEFLAGS              31
 #define SQLITE_TESTCTRL_TUNE                    32
 #define SQLITE_TESTCTRL_LOGEST                  33
-#define SQLITE_TESTCTRL_USELONGDOUBLE           34
+#define SQLITE_TESTCTRL_USELONGDOUBLE           34  /* NOT USED */
 #define SQLITE_TESTCTRL_LAST                    34  /* Largest TESTCTRL */

 /*
@@ -10539,6 +10543,14 @@ typedef struct sqlite3_snapshot {
 ** If there is not already a read-transaction open on schema S when
 ** this function is called, one is opened automatically.
 **
+** If a read-transaction is opened by this function, then it is guaranteed 
+** that the returned snapshot object may not be invalidated by a database 
+** writer or checkpointer until after the read-transaction is closed. This 
+** is not guaranteed if a read-transaction is already open when this 
+** function is called. In that case, any subsequent write or checkpoint 
+** operation on the database may invalidate the returned snapshot handle, 
+** even while the read-transaction remains open.
+**
 ** The following must be true for this function to succeed. If any of
 ** the following statements are false when sqlite3_snapshot_get() is
 ** called, SQLITE_ERROR is returned. The final value of *P is undefined
@@ -638,6 +638,7 @@
 #include <string.h>
 #include <assert.h>
 #include <stddef.h>
+#include <ctype.h>

 /*
 ** Use a macro to replace memcpy() if compiled with SQLITE_INLINE_MEMCPY.
@@ -660,7 +661,6 @@
 # define float sqlite_int64
 # define fabs(X) ((X)<0?-(X):(X))
 # define sqlite3IsOverflow(X) 0
-# define LONGDOUBLE_TYPE sqlite_int64
 # ifndef SQLITE_BIG_DBL
 #   define SQLITE_BIG_DBL (((sqlite3_int64)1)<<50)
 # endif
@@ -835,9 +835,6 @@
 #  define INT8_TYPE signed char
 # endif
 #endif
-#ifndef LONGDOUBLE_TYPE
-# define LONGDOUBLE_TYPE long double
-#endif
 typedef sqlite_int64 i64;          /* 8-byte signed integer */
 typedef sqlite_uint64 u64;         /* 8-byte unsigned integer */
 typedef UINT32_TYPE u32;           /* 4-byte unsigned integer */
@@ -4262,7 +4259,6 @@ struct Sqlite3Config {
  u8 bUseCis;                       /* Use covering indices for full-scans */
  u8 bSmallMalloc;                  /* Avoid large memory allocations if true */
  u8 bExtraSchemaChecks;            /* Verify type,name,tbl_name in schema */
-  u8 bUseLongDouble;                /* Make use of long double */
 #ifdef SQLITE_DEBUG
  u8 bJsonSelfcheck;                /* Double-check JSON parsing */
 #endif
@@ -4637,15 +4633,6 @@ int sqlite3CantopenError(int);
 # define SQLITE_ENABLE_FTS3 1
 #endif

-/*
-** The ctype.h header is needed for non-ASCII systems.  It is also
-** needed by FTS3 when FTS3 is included in the amalgamation.
-*/
-#if !defined(SQLITE_ASCII) || \
-    (defined(SQLITE_ENABLE_FTS3) && defined(SQLITE_AMALGAMATION))
-# include <ctype.h>
-#endif
-
 /*
 ** The following macros mimic the standard library functions toupper(),
 ** isspace(), isalnum(), isdigit() and isxdigit(), respectively. The
@@ -5267,7 +5254,7 @@ int sqlite3GetInt32(const char *, int*);
 int sqlite3GetUInt32(const char*, u32*);
 int sqlite3Atoi(const char*);
 #ifndef SQLITE_OMIT_UTF16
-int sqlite3Utf16ByteLen(const void *pData, int nChar);
+int sqlite3Utf16ByteLen(const void *pData, int nByte, int nChar);
 #endif
 int sqlite3Utf8CharLen(const char *pData, int nByte);
 u32 sqlite3Utf8Read(const u8**);
@@ -2343,7 +2343,7 @@ static int SQLITE_TCLAPI test_stmt_scanstatus(
    }
    for(ii=0; ii<(int)nFlag; ii++){
      int iVal = 0;
-      int res = Tcl_GetIndexFromObjStruct(
+      res = Tcl_GetIndexFromObjStruct(
          interp, aFlag[ii], aTbl, sizeof(aTbl[0]), "flag", 0, &iVal
      );
      if( res ) return TCL_ERROR;
@@ -7313,37 +7313,6 @@ static int SQLITE_TCLAPI extra_schema_checks(
  return TCL_OK;
 }

-/*
-** tclcmd:  use_long_double BOOLEAN|"default"
-**
-** If no argument, report the current value of the use-long-double flag.
-**
-** If argument is "default", set the use-long-double flag to the default
-** value for this build, based on the size of LONGDOUBLE_TYPE.
-**
-** If argument is a boolean, set the use-long-double flag accordingly.
-**
-** Return the new setting.
-*/
-static int SQLITE_TCLAPI use_long_double(
-  ClientData clientData, /* Pointer to sqlite3_enable_XXX function */
-  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
-  int objc,              /* Number of arguments */
-  Tcl_Obj *CONST objv[]  /* Command arguments */
-){
-  int i = -1;
-  if( objc==2 ){
-    if( strcmp(Tcl_GetString(objv[1]),"default")==0 ){
-      i = 2;
-    }else{
-      if( Tcl_GetBooleanFromObj(interp,objv[1],&i) ) return TCL_ERROR;
-    }
-  }
-  i = sqlite3_test_control(SQLITE_TESTCTRL_USELONGDOUBLE, i);
-  Tcl_SetObjResult(interp, Tcl_NewIntObj(i));
-  return TCL_OK;
-}
-
 /*
 ** tclcmd:  database_may_be_corrupt
 **
@@ -9150,7 +9119,6 @@ int Sqlitetest1_Init(Tcl_Interp *interp){
     { "reset_prng_state",              reset_prng_state,   0 },
     { "prng_seed",                     prng_seed,          0 },
     { "extra_schema_checks",           extra_schema_checks,    0},
-     { "use_long_double",               use_long_double,        0},
     { "database_never_corrupt",        database_never_corrupt, 0},
     { "database_may_be_corrupt",       database_may_be_corrupt, 0},
     { "optimization_control",          optimization_control,0},
@@ -9299,7 +9267,6 @@ int Sqlitetest1_Init(Tcl_Interp *interp){
 #endif
  };
  static int bitmask_size = sizeof(Bitmask)*8;
-  static int longdouble_size = sizeof(LONGDOUBLE_TYPE);
  int i;
  extern int sqlite3_sync_count, sqlite3_fullsync_count;
  extern int sqlite3_opentemp_count;
@@ -9400,8 +9367,6 @@ int Sqlitetest1_Init(Tcl_Interp *interp){
      (char*)&sqlite3_data_directory, TCL_LINK_STRING);
  Tcl_LinkVar(interp, "bitmask_size",
      (char*)&bitmask_size, TCL_LINK_INT|TCL_LINK_READ_ONLY);
-  Tcl_LinkVar(interp, "longdouble_size",
-      (char*)&longdouble_size, TCL_LINK_INT|TCL_LINK_READ_ONLY);
  Tcl_LinkVar(interp, "sqlite_sync_count",
      (char*)&sqlite3_sync_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_fullsync_count",
@@ -512,10 +512,6 @@ static void set_options(Tcl_Interp *interp){
  Tcl_SetVar2(interp, "sqlite_options", "lookaside", "1", TCL_GLOBAL_ONLY);
 #endif

-Tcl_SetVar2(interp, "sqlite_options", "long_double",
-              sizeof(LONGDOUBLE_TYPE)>sizeof(double) ? "1" : "0",
-              TCL_GLOBAL_ONLY);
-
 #ifdef SQLITE_OMIT_MEMORYDB
  Tcl_SetVar2(interp, "sqlite_options", "memorydb", "0", TCL_GLOBAL_ONLY);
 #else
@@ -514,20 +514,22 @@ char *sqlite3Utf16to8(sqlite3 *db, const void *z, int nByte, u8 enc){
 }

 /*
-** zIn is a UTF-16 encoded unicode string at least nChar characters long.
+** zIn is a UTF-16 encoded unicode string at least nByte bytes long.
 ** Return the number of bytes in the first nChar unicode characters
-** in pZ.  nChar must be non-negative.
+** in pZ.  nChar must be non-negative.  Surrogate pairs count as a single
+** character.
 */
-int sqlite3Utf16ByteLen(const void *zIn, int nChar){
+int sqlite3Utf16ByteLen(const void *zIn, int nByte, int nChar){
  int c;
  unsigned char const *z = zIn;
+  unsigned char const *zEnd = &z[nByte-1];
  int n = 0;
  
  if( SQLITE_UTF16NATIVE==SQLITE_UTF16LE ) z++;
-  while( n<nChar ){
+  while( n<nChar && ALWAYS(z<=zEnd) ){
    c = z[0];
    z += 2;
-    if( c>=0xd8 && c<0xdc && z[0]>=0xdc && z[0]<0xe0 ) z += 2;
+    if( c>=0xd8 && c<0xdc && z<=zEnd && z[0]>=0xdc && z[0]<0xe0 ) z += 2;
    n++;
  }
  return (int)(z-(unsigned char const *)zIn) 
@@ -539,6 +539,8 @@ int sqlite3AtoF(const char *z, double *pResult, int length, u8 enc){
  int eValid = 1;  /* True exponent is either not used or is well-formed */
  int nDigit = 0;  /* Number of digits processed */
  int eType = 1;   /* 1: pure integer,  2+: fractional  -1 or less: bad UTF16 */
+  double rr[2];
+  u64 s2;

  assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE );
  *pResult = 0.0;   /* Default return value, in case of an error */
@@ -650,68 +652,41 @@ do_atof_calc:
    e++;
  }

-  if( e==0 ){
-    *pResult = s;
-  }else if( sqlite3Config.bUseLongDouble ){
-    LONGDOUBLE_TYPE r = (LONGDOUBLE_TYPE)s;
-    if( e>0 ){
-      while( e>=100  ){ e-=100; r *= 1.0e+100L; }
-      while( e>=10   ){ e-=10;  r *= 1.0e+10L;  }
-      while( e>=1    ){ e-=1;   r *= 1.0e+01L;  }
-    }else{
-      while( e<=-100 ){ e+=100; r *= 1.0e-100L; }
-      while( e<=-10  ){ e+=10;  r *= 1.0e-10L;  }
-      while( e<=-1   ){ e+=1;   r *= 1.0e-01L;  }
-    }
-    assert( r>=0.0 );
-    if( r>+1.7976931348623157081452742373e+308L ){
-#ifdef INFINITY
-      *pResult = +INFINITY;
-#else
-      *pResult = 1.0e308*10.0;
+  rr[0] = (double)s;
+  s2 = (u64)rr[0];
+#if defined(_MSC_VER) && _MSC_VER<1700
+  if( s2==0x8000000000000000LL ){ s2 = 2*(u64)(0.5*rr[0]); }
 #endif
-    }else{
-      *pResult = (double)r;
+  rr[1] = s>=s2 ? (double)(s - s2) : -(double)(s2 - s);
+  if( e>0 ){
+    while( e>=100  ){
+      e -= 100;
+      dekkerMul2(rr, 1.0e+100, -1.5902891109759918046e+83);
+    }
+    while( e>=10   ){
+      e -= 10;
+      dekkerMul2(rr, 1.0e+10, 0.0);
+    }
+    while( e>=1    ){
+      e -= 1;
+      dekkerMul2(rr, 1.0e+01, 0.0);
    }
  }else{
-    double rr[2];
-    u64 s2;
-    rr[0] = (double)s;
-    s2 = (u64)rr[0];
-#if defined(_MSC_VER) && _MSC_VER<1700
-    if( s2==0x8000000000000000LL ){ s2 = 2*(u64)(0.5*rr[0]); }
-#endif
-    rr[1] = s>=s2 ? (double)(s - s2) : -(double)(s2 - s);
-    if( e>0 ){
-      while( e>=100  ){
-        e -= 100;
-        dekkerMul2(rr, 1.0e+100, -1.5902891109759918046e+83);
-      }
-      while( e>=10   ){
-        e -= 10;
-        dekkerMul2(rr, 1.0e+10, 0.0);
-      }
-      while( e>=1    ){
-        e -= 1;
-        dekkerMul2(rr, 1.0e+01, 0.0);
-      }
-    }else{
-      while( e<=-100 ){
-        e += 100;
-        dekkerMul2(rr, 1.0e-100, -1.99918998026028836196e-117);
-      }
-      while( e<=-10  ){
-        e += 10;
-        dekkerMul2(rr, 1.0e-10, -3.6432197315497741579e-27);
-      }
-      while( e<=-1   ){
-        e += 1;
-        dekkerMul2(rr, 1.0e-01, -5.5511151231257827021e-18);
-      }
+    while( e<=-100 ){
+      e += 100;
+      dekkerMul2(rr, 1.0e-100, -1.99918998026028836196e-117);
+    }
+    while( e<=-10  ){
+      e += 10;
+      dekkerMul2(rr, 1.0e-10, -3.6432197315497741579e-27);
+    }
+    while( e<=-1   ){
+      e += 1;
+      dekkerMul2(rr, 1.0e-01, -5.5511151231257827021e-18);
    }
-    *pResult = rr[0]+rr[1];
-    if( sqlite3IsNaN(*pResult) ) *pResult = 1e300*1e300;
  }
+  *pResult = rr[0]+rr[1];
+  if( sqlite3IsNaN(*pResult) ) *pResult = 1e300*1e300;
  if( sign<0 ) *pResult = -*pResult;
  assert( !sqlite3IsNaN(*pResult) );

@@ -1032,9 +1007,10 @@ void sqlite3FpDecode(FpDecode *p, double r, int iRound, int mxRound){
  int i;
  u64 v;
  int e, exp = 0;
+  double rr[2];
+
  p->isSpecial = 0;
  p->z = p->zBuf;
-
  assert( mxRound>0 );

  /* Convert negative numbers to positive.  Deal with Infinity, 0.0, and
@@ -1062,62 +1038,45 @@ void sqlite3FpDecode(FpDecode *p, double r, int iRound, int mxRound){

  /* Multiply r by powers of ten until it lands somewhere in between
  ** 1.0e+19 and 1.0e+17.
+  **
+  ** Use Dekker-style double-double computation to increase the
+  ** precision.
+  **
+  ** The error terms on constants like 1.0e+100 computed using the
+  ** decimal extension, for example as follows:
+  **
+  **   SELECT decimal_exp(decimal_sub('1.0e+100',decimal(1.0e+100)));
  */
-  if( sqlite3Config.bUseLongDouble ){
-    LONGDOUBLE_TYPE rr = r;
-    if( rr>=1.0e+19 ){
-      while( rr>=1.0e+119L ){ exp+=100; rr *= 1.0e-100L; }
-      while( rr>=1.0e+29L  ){ exp+=10;  rr *= 1.0e-10L;  }
-      while( rr>=1.0e+19L  ){ exp++;    rr *= 1.0e-1L;   }
-    }else{
-      while( rr<1.0e-97L   ){ exp-=100; rr *= 1.0e+100L; }
-      while( rr<1.0e+07L   ){ exp-=10;  rr *= 1.0e+10L;  }
-      while( rr<1.0e+17L   ){ exp--;    rr *= 1.0e+1L;   }
+  rr[0] = r;
+  rr[1] = 0.0;
+  if( rr[0]>9.223372036854774784e+18 ){
+    while( rr[0]>9.223372036854774784e+118 ){
+      exp += 100;
+      dekkerMul2(rr, 1.0e-100, -1.99918998026028836196e-117);
+    }
+    while( rr[0]>9.223372036854774784e+28 ){
+      exp += 10;
+      dekkerMul2(rr, 1.0e-10, -3.6432197315497741579e-27);
+    }
+    while( rr[0]>9.223372036854774784e+18 ){
+      exp += 1;
+      dekkerMul2(rr, 1.0e-01, -5.5511151231257827021e-18);
    }
-    v = (u64)rr;
  }else{
-    /* If high-precision floating point is not available using "long double",
-    ** then use Dekker-style double-double computation to increase the
-    ** precision.
-    **
-    ** The error terms on constants like 1.0e+100 computed using the
-    ** decimal extension, for example as follows:
-    **
-    **   SELECT decimal_exp(decimal_sub('1.0e+100',decimal(1.0e+100)));
-    */
-    double rr[2];
-    rr[0] = r;
-    rr[1] = 0.0;
-    if( rr[0]>9.223372036854774784e+18 ){
-      while( rr[0]>9.223372036854774784e+118 ){
-        exp += 100;
-        dekkerMul2(rr, 1.0e-100, -1.99918998026028836196e-117);
-      }
-      while( rr[0]>9.223372036854774784e+28 ){
-        exp += 10;
-        dekkerMul2(rr, 1.0e-10, -3.6432197315497741579e-27);
-      }
-      while( rr[0]>9.223372036854774784e+18 ){
-        exp += 1;
-        dekkerMul2(rr, 1.0e-01, -5.5511151231257827021e-18);
-      }
-    }else{
-      while( rr[0]<9.223372036854774784e-83  ){
-        exp -= 100;
-        dekkerMul2(rr, 1.0e+100, -1.5902891109759918046e+83);
-      }
-      while( rr[0]<9.223372036854774784e+07  ){
-        exp -= 10;
-        dekkerMul2(rr, 1.0e+10, 0.0);
-      }
-      while( rr[0]<9.22337203685477478e+17  ){
-        exp -= 1;
-        dekkerMul2(rr, 1.0e+01, 0.0);
-      }
+    while( rr[0]<9.223372036854774784e-83  ){
+      exp -= 100;
+      dekkerMul2(rr, 1.0e+100, -1.5902891109759918046e+83);
+    }
+    while( rr[0]<9.223372036854774784e+07  ){
+      exp -= 10;
+      dekkerMul2(rr, 1.0e+10, 0.0);
+    }
+    while( rr[0]<9.22337203685477478e+17  ){
+      exp -= 1;
+      dekkerMul2(rr, 1.0e+01, 0.0);
    }
-    v = rr[1]<0.0 ? (u64)rr[0]-(u64)(-rr[1]) : (u64)rr[0]+(u64)rr[1];
  }
-
+  v = rr[1]<0.0 ? (u64)rr[0]-(u64)(-rr[1]) : (u64)rr[0]+(u64)rr[1];

  /* Extract significant digits. */
  i = sizeof(p->zBuf)-1;
@@ -543,6 +543,7 @@ struct PreUpdate {
  Mem *aNew;                      /* Array of new.* values */
  Table *pTab;                    /* Schema object being updated */
  Index *pPk;                     /* PK index if pTab is WITHOUT ROWID */
+  sqlite3_value **apDflt;         /* Array of default values, if required */
 };

 /*
@@ -1621,6 +1621,17 @@ const void *sqlite3_column_origin_name16(sqlite3_stmt *pStmt, int N){
 **
 ** The error code stored in database p->db is overwritten with the return
 ** value in any case.
+**
+** (tag-20240917-01) If  vdbeUnbind(p,(u32)(i-1))  returns SQLITE_OK,
+** that means all of the the following will be true:
+**
+**     p!=0
+**     p->pVar!=0
+**     i>0
+**     i<=p->nVar
+**
+** An assert() is normally added after vdbeUnbind() to help static analyzers
+** realize this.
 */
 static int vdbeUnbind(Vdbe *p, unsigned int i){
  Mem *pVar;
@@ -1678,6 +1689,7 @@ static int bindText(

  rc = vdbeUnbind(p, (u32)(i-1));
  if( rc==SQLITE_OK ){
+    assert( p!=0 && p->aVar!=0 && i>0 && i<=p->nVar ); /* tag-20240917-01 */
    if( zData!=0 ){
      pVar = &p->aVar[i-1];
      rc = sqlite3VdbeMemSetStr(pVar, zData, nData, encoding, xDel);
@@ -1727,6 +1739,7 @@ int sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){
  Vdbe *p = (Vdbe *)pStmt;
  rc = vdbeUnbind(p, (u32)(i-1));
  if( rc==SQLITE_OK ){
+    assert( p!=0 && p->aVar!=0 && i>0 && i<=p->nVar ); /* tag-20240917-01 */
    sqlite3VdbeMemSetDouble(&p->aVar[i-1], rValue);
    sqlite3_mutex_leave(p->db->mutex);
  }
@@ -1740,6 +1753,7 @@ int sqlite3_bind_int64(sqlite3_stmt *pStmt, int i, sqlite_int64 iValue){
  Vdbe *p = (Vdbe *)pStmt;
  rc = vdbeUnbind(p, (u32)(i-1));
  if( rc==SQLITE_OK ){
+    assert( p!=0 && p->aVar!=0 && i>0 && i<=p->nVar ); /* tag-20240917-01 */
    sqlite3VdbeMemSetInt64(&p->aVar[i-1], iValue);
    sqlite3_mutex_leave(p->db->mutex);
  }
@@ -1750,6 +1764,7 @@ int sqlite3_bind_null(sqlite3_stmt *pStmt, int i){
  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, (u32)(i-1));
  if( rc==SQLITE_OK ){
+    assert( p!=0 && p->aVar!=0 && i>0 && i<=p->nVar ); /* tag-20240917-01 */
    sqlite3_mutex_leave(p->db->mutex);
  }
  return rc;
@@ -1765,6 +1780,7 @@ int sqlite3_bind_pointer(
  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, (u32)(i-1));
  if( rc==SQLITE_OK ){
+    assert( p!=0 && p->aVar!=0 && i>0 && i<=p->nVar ); /* tag-20240917-01 */
    sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr, zPTtype, xDestructor);
    sqlite3_mutex_leave(p->db->mutex);
  }else if( xDestructor ){
@@ -1846,6 +1862,7 @@ int sqlite3_bind_zeroblob(sqlite3_stmt *pStmt, int i, int n){
  Vdbe *p = (Vdbe *)pStmt;
  rc = vdbeUnbind(p, (u32)(i-1));
  if( rc==SQLITE_OK ){
+    assert( p!=0 && p->aVar!=0 && i>0 && i<=p->nVar ); /* tag-20240917-01 */
 #ifndef SQLITE_OMIT_INCRBLOB
    sqlite3VdbeMemSetZeroBlob(&p->aVar[i-1], n);
 #else
@@ -2205,7 +2222,30 @@ int sqlite3_preupdate_old(sqlite3 *db, int iIdx, sqlite3_value **ppValue){
  if( iIdx==p->pTab->iPKey ){
    sqlite3VdbeMemSetInt64(pMem, p->iKey1);
  }else if( iIdx>=p->pUnpacked->nField ){
-    *ppValue = (sqlite3_value *)columnNullValue();
+    /* This occurs when the table has been extended using ALTER TABLE
+    ** ADD COLUMN. The value to return is the default value of the column. */
+    Column *pCol = &p->pTab->aCol[iIdx];
+    if( pCol->iDflt>0 ){
+      if( p->apDflt==0 ){
+        int nByte = sizeof(sqlite3_value*)*p->pTab->nCol;
+        p->apDflt = (sqlite3_value**)sqlite3DbMallocZero(db, nByte);
+        if( p->apDflt==0 ) goto preupdate_old_out;
+      }
+      if( p->apDflt[iIdx]==0 ){
+        sqlite3_value *pVal = 0;
+        Expr *pDflt;
+        assert( p->pTab!=0 && IsOrdinaryTable(p->pTab) );
+        pDflt = p->pTab->u.tab.pDfltList->a[pCol->iDflt-1].pExpr;
+        rc = sqlite3ValueFromExpr(db, pDflt, ENC(db), pCol->affinity, &pVal);
+        if( rc==SQLITE_OK && pVal==0 ){
+          rc = SQLITE_CORRUPT_BKPT;
+        }
+        p->apDflt[iIdx] = pVal;
+      }
+      *ppValue = p->apDflt[iIdx];
+    }else{
+      *ppValue = (sqlite3_value *)columnNullValue();
+    }
  }else if( p->pTab->aCol[iIdx].affinity==SQLITE_AFF_REAL ){
    if( pMem->flags & (MEM_Int|MEM_IntReal) ){
      testcase( pMem->flags & MEM_Int );
@@ -4512,7 +4512,7 @@ SQLITE_NOINLINE int sqlite3BlobCompare(const Mem *pB1, const Mem *pB2){
 ** We must use separate SQLITE_NOINLINE functions here, since otherwise
 ** optimizer code movement causes gcov to become very confused.
 */
-#if  defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_DEBUG)
+#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_DEBUG)
 static int SQLITE_NOINLINE doubleLt(double a, double b){ return a<b; }
 static int SQLITE_NOINLINE doubleEq(double a, double b){ return a==b; }
 #endif
@@ -4527,13 +4527,6 @@ int sqlite3IntFloatCompare(i64 i, double r){
    /* SQLite considers NaN to be a NULL. And all integer values are greater
    ** than NULL */
    return 1;
-  }
-  if( sqlite3Config.bUseLongDouble ){
-    LONGDOUBLE_TYPE x = (LONGDOUBLE_TYPE)i;
-    testcase( x<r );
-    testcase( x>r );
-    testcase( x==r );
-    return (x<r) ? -1 : (x>r);
  }else{
    i64 y;
    if( r<-9223372036854775808.0 ) return +1;
@@ -5543,5 +5536,12 @@ void sqlite3VdbePreUpdateHook(
    }
    sqlite3DbNNFreeNN(db, preupdate.aNew);
  }
+  if( preupdate.apDflt ){
+    int i;
+    for(i=0; i<pTab->nCol; i++){
+      sqlite3ValueFree(preupdate.apDflt[i]);
+    }
+    sqlite3DbFree(db, preupdate.apDflt);
+  }
 }
 #endif /* SQLITE_ENABLE_PREUPDATE_HOOK */
@@ -1534,7 +1534,8 @@ static int valueFromFunction(
      goto value_from_function_out;
    }
    for(i=0; i<nVal; i++){
-      rc = sqlite3ValueFromExpr(db, pList->a[i].pExpr, enc, aff, &apVal[i]);
+      rc = sqlite3Stat4ValueFromExpr(pCtx->pParse, pList->a[i].pExpr, aff,
+                                     &apVal[i]);
      if( apVal[i]==0 || rc!=SQLITE_OK ) goto value_from_function_out;
    }
  }
@@ -867,6 +867,7 @@ int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){
      Table *pNew = sParse.pNewTable;
      Index *pIdx;
      pTab->aCol = pNew->aCol;
+      assert( IsOrdinaryTable(pNew) );
      sqlite3ExprListDelete(db, pNew->u.tab.pDfltList);
      pTab->nNVCol = pTab->nCol = pNew->nCol;
      pTab->tabFlags |= pNew->tabFlags & (TF_WithoutRowid|TF_NoVisibleRowid);
@@ -44,7 +44,7 @@
 **    28: Checksum-2 (second part of checksum for first 24 bytes of header).
 **
 ** Immediately following the wal-header are zero or more frames. Each
-** frame consists of a 24-byte frame-header followed by a <page-size> bytes
+** frame consists of a 24-byte frame-header followed by <page-size> bytes
 ** of page data. The frame-header is six big-endian 32-bit unsigned
 ** integer values, as follows:
 **
@@ -541,6 +541,7 @@ struct Wal {
 #endif
 #ifdef SQLITE_ENABLE_SNAPSHOT
  WalIndexHdr *pSnapshot;    /* Start transaction here if not NULL */
+  int bGetSnapshot;          /* Transaction opened for sqlite3_get_snapshot() */
 #endif
 #ifdef SQLITE_ENABLE_SETLK_TIMEOUT
  sqlite3 *db;
@@ -3097,7 +3098,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int *pCnt){
  SEH_INJECT_FAULT;
  if( !useWal && AtomicLoad(&pInfo->nBackfill)==pWal->hdr.mxFrame
 #ifdef SQLITE_ENABLE_SNAPSHOT
-   && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0)
+   && ((pWal->bGetSnapshot==0 && pWal->pSnapshot==0) || pWal->hdr.mxFrame==0)
 #endif
  ){
    /* The WAL has been completely backfilled (or it is empty).
@@ -4497,7 +4498,20 @@ void sqlite3WalSnapshotOpen(
  Wal *pWal,
  sqlite3_snapshot *pSnapshot
 ){
-  pWal->pSnapshot = (WalIndexHdr*)pSnapshot;
+  if( pSnapshot && ((WalIndexHdr*)pSnapshot)->iVersion==0 ){
+    /* iVersion==0 means that this is a call to sqlite3_snapshot_get().  In
+    ** this case set the bGetSnapshot flag so that if the call to
+    ** sqlite3_snapshot_get() is about to read transaction on this wal 
+    ** file, it does not take read-lock 0 if the wal file has been completely
+    ** checkpointed. Taking read-lock 0 would work, but then it would be
+    ** possible for a subsequent writer to destroy the snapshot even while 
+    ** this connection is holding its read-transaction open. This is contrary
+    ** to user expectations, so we avoid it by not taking read-lock 0. */
+    pWal->bGetSnapshot = 1;
+  }else{
+    pWal->pSnapshot = (WalIndexHdr*)pSnapshot;
+    pWal->bGetSnapshot = 0;
+  }
 }

 /*
@@ -1636,9 +1636,11 @@ static void freeIndexInfo(sqlite3 *db, sqlite3_index_info *pIdxInfo){
 ** that this is required.
 */
 static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){
-  sqlite3_vtab *pVtab = sqlite3GetVTable(pParse->db, pTab)->pVtab;
  int rc;
+  sqlite3_vtab *pVtab;

+  assert( IsVirtual(pTab) );
+  pVtab = sqlite3GetVTable(pParse->db, pTab)->pVtab;
  whereTraceIndexInfoInputs(p, pTab);
  pParse->db->nSchemaLock++;
  rc = pVtab->pModule->xBestIndex(pVtab, p);
@@ -6199,6 +6201,7 @@ static SQLITE_NOINLINE Bitmask whereOmitNoopJoin(
    WhereTerm *pTerm, *pEnd;
    SrcItem *pItem;
    WhereLoop *pLoop;
+    Bitmask m1;
    pLoop = pWInfo->a[i].pWLoop;
    pItem = &pWInfo->pTabList->a[pLoop->iTab];
    if( (pItem->fg.jointype & (JT_LEFT|JT_RIGHT))!=JT_LEFT ) continue;
@@ -6225,7 +6228,10 @@ static SQLITE_NOINLINE Bitmask whereOmitNoopJoin(
      }
    }
    if( pTerm<pEnd ) continue;
-    WHERETRACE(0xffffffff, ("-> drop loop %c not used\n", pLoop->cId));
+    WHERETRACE(0xffffffff,("-> omit unused FROM-clause term %c\n",pLoop->cId));
+    m1 = MASKBIT(i)-1;
+    testcase( ((pWInfo->revMask>>1) & ~m1)!=0 );
+    pWInfo->revMask = (m1 & pWInfo->revMask) | ((pWInfo->revMask>>1) & ~m1);
    notReady &= ~pLoop->maskSelf;
    for(pTerm=pWInfo->sWC.a; pTerm<pEnd; pTerm++){
      if( (pTerm->prereqAll & pLoop->maskSelf)!=0 ){
@@ -15,7 +15,7 @@
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl

-set mxpow [expr {[use_long_double]?100:35}]
+set mxpow 35
 expr srand(1)
 for {set i 1} {$i<20000} {incr i} {
  set pow [expr {int((rand()-0.5)*$mxpow)}]
@@ -262,11 +262,9 @@ do_test cast-3.12 {
 do_realnum_test cast-3.13 {
  execsql {SELECT CAST('9223372036854774800' AS real)}
 } 9.22337203685477e+18
-ifcapable long_double {
-  do_test cast-3.14 {
-    execsql {SELECT CAST(CAST('9223372036854774800' AS real) AS integer)}
-  } 9223372036854774784
-}
+do_test cast-3.14 {
+  execsql {SELECT CAST(CAST('9223372036854774800' AS real) AS integer)}
+} 9223372036854774784
 do_test cast-3.15 {
  execsql {SELECT CAST('-9223372036854774800' AS integer)}
 } -9223372036854774800
@@ -276,11 +274,9 @@ do_test cast-3.16 {
 do_realnum_test cast-3.17 {
  execsql {SELECT CAST('-9223372036854774800' AS real)}
 } -9.22337203685477e+18
-ifcapable long_double {
-  do_test cast-3.18 {
-    execsql {SELECT CAST(CAST('-9223372036854774800' AS real) AS integer)}
-  } -9223372036854774784
-}
+do_test cast-3.18 {
+  execsql {SELECT CAST(CAST('-9223372036854774800' AS real) AS integer)}
+} -9223372036854774784
 if {[db eval {PRAGMA encoding}]=="UTF-8"} {
  do_test cast-3.21 {
    execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS integer)}
@@ -291,14 +287,12 @@ if {[db eval {PRAGMA encoding}]=="UTF-8"} {
  do_realnum_test cast-3.23 {
    execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS real)}
  } 9.22337203685477e+18
-  ifcapable long_double {
-    do_test cast-3.24 {
-      execsql {
-        SELECT CAST(CAST(x'39323233333732303336383534373734383030' AS real)
-                    AS integer)
-      }
-    } 9223372036854774784
-  }
+  do_test cast-3.24 {
+    execsql {
+      SELECT CAST(CAST(x'39323233333732303336383534373734383030' AS real)
+                  AS integer)
+    }
+  } 9223372036854774784
 }
 do_test cast-3.31 {
  execsql {SELECT CAST(NULL AS numeric)}
@@ -12,7 +12,6 @@
 **
 **    time ./a.out 0 10000000     <-- standard library
 **    time ./a.out 1 10000000     <-- SQLite
-**    time ./a.out 2 10000000     <-- SQLite with long-double disabled
 */
 static double aVal[] = {
  -1.0163830486285643089e+063,
@@ -150,15 +149,6 @@ int main(int argc, char **argv){
      }
      break;
    }
-    case 2: {
-      printf("Doing %d calls to sqlite3_snprintf() without long double\n", cnt);
-      sqlite3_test_control(SQLITE_TESTCTRL_USELONGDOUBLE, 0);
-      for(i=0; i<cnt; i++){
-        sqlite3_snprintf(sizeof(zBuf), zBuf, "%!.26g", aVal[i%NN]);
-      }
-      break;
-    }
-
  }
  return 0;
 }
@@ -4376,6 +4376,8 @@ do_test 25.0 {
 | end crash-dde9e76ed8ab2d.db
 }]} {}

+reset_prng_state
+
 do_catchsql_test 25.1 {
  PRAGMA writable_schema = 1;
  WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x%1 FROM c WHERE x<599237)
@@ -261,9 +261,6 @@ ifcapable floatingpoint {
    catchsql {SELECT round(b,2.0) FROM t1 ORDER BY b}
  } {0 {-2.0 1.23 2.0}}
  # Verify some values reported on the mailing list.
-  # Some of these fail on MSVC builds with 64-bit
-  # long doubles, but not on GCC builds with 80-bit
-  # long doubles.
  for {set i 1} {$i<999} {incr i} {
    set x1 [expr 40222.5 + $i]
    set x2 [expr 40223.0 + $i]
@@ -37,7 +37,7 @@ set highPrecision(3) [expr \
    {[db eval {SELECT toreal(9007199254740992 + 1);}] eq {{}}}]

 if {!$highPrecision(1) || !$highPrecision(2) || !$highPrecision(3)} {
-  puts "NOTICE: use_long_double: [use_long_double] \
+  puts "NOTICE:\
        highPrecision: $highPrecision(1) $highPrecision(2) $highPrecision(3)"
 }

@@ -1038,17 +1038,18 @@ static int recoverDatabase(sqlite3 *db){
 static void bindDebugParameters(sqlite3_stmt *pStmt){
  int nVar = sqlite3_bind_parameter_count(pStmt);
  int i;
-  for(i=0; i<nVar; i++){
-    const char *zVar = sqlite3_bind_parameter_name(pStmt, i+1);
+  for(i=1; i<=nVar; i++){
+    const char *zVar = sqlite3_bind_parameter_name(pStmt, i);
    if( zVar==0 ) continue;
    if( strncmp(zVar, "$int_", 5)==0 ){
-      sqlite3_bind_int(pStmt, i+1, atoi(&zVar[5]));
+      sqlite3_bind_int(pStmt, i, atoi(&zVar[5]));
    }else
    if( strncmp(zVar, "$text_", 6)==0 ){
-      char *zBuf = sqlite3_malloc64( strlen(zVar)-5 );
+      size_t szVar = strlen(zVar);
+      char *zBuf = sqlite3_malloc64( szVar-5 );
      if( zBuf ){
-        memcpy(zBuf, &zVar[6], strlen(zVar)-5);
-        sqlite3_bind_text64(pStmt, i+1, zBuf, -1, sqlite3_free, SQLITE_UTF8);
+        memcpy(zBuf, &zVar[6], szVar-5);
+        sqlite3_bind_text64(pStmt, i, zBuf, szVar-6, sqlite3_free, SQLITE_UTF8);
      }
    }
  }
@@ -47,17 +47,18 @@ static void reportInvariantFailed(
 static void bindDebugParameters(sqlite3_stmt *pStmt){
  int nVar = sqlite3_bind_parameter_count(pStmt);
  int i;
-  for(i=0; i<nVar; i++){
-    const char *zVar = sqlite3_bind_parameter_name(pStmt, i+1);
+  for(i=1; i<=nVar; i++){
+    const char *zVar = sqlite3_bind_parameter_name(pStmt, i);
    if( zVar==0 ) continue;
    if( strncmp(zVar, "$int_", 5)==0 ){
-      sqlite3_bind_int(pStmt, i+1, atoi(&zVar[5]));
+      sqlite3_bind_int(pStmt, i, atoi(&zVar[5]));
    }else
    if( strncmp(zVar, "$text_", 6)==0 ){
-      char *zBuf = sqlite3_malloc64( strlen(zVar)-5 );
+      size_t szVar = strlen(zVar);
+      char *zBuf = sqlite3_malloc64( szVar-5 );
      if( zBuf ){
-        memcpy(zBuf, &zVar[6], strlen(zVar)-5);
-        sqlite3_bind_text64(pStmt, i+1, zBuf, -1, sqlite3_free, SQLITE_UTF8);
+        memcpy(zBuf, &zVar[6], szVar-5);
+        sqlite3_bind_text64(pStmt, i, zBuf, szVar-6, sqlite3_free, SQLITE_UTF8);
      }
    }
  }
@@ -706,11 +706,13 @@ ifcapable altertable {
  }
 }

-if 0 {
+if 1 {
  # At time of writing, these two are broken. They demonstrate that the
  # sqlite3_preupdate_old() method does not handle the case where ALTER TABLE
  # has been used to add a column with a default value other than NULL.
  #
+  # 2024-09-18: These are now fixed.
+  #
  do_preupdate_test 7.5.2.1 {
    DELETE FROM t8 WHERE a = 'one'
  } {
@@ -1022,4 +1024,37 @@ do_catchsql_test 12.6 {
  INSERT INTO t4 VALUES('def', 3);
 } {1 {UNIQUE constraint failed: t4.a}}

+#-------------------------------------------------------------------------
+# Test adding non-NULL default values using ALTER TABLE.
+#
+reset_db
+db preupdate hook preupdate_hook
+do_execsql_test 13.0 {
+  CREATE TABLE t1(a INTEGER PRIMARY KEY);
+  INSERT INTO t1 VALUES(100), (200), (300), (400);
+}
+
+do_execsql_test 13.1 {
+  ALTER TABLE t1 ADD COLUMN b DEFAULT 1234;
+  ALTER TABLE t1 ADD COLUMN c DEFAULT 'abcdef';
+  ALTER TABLE t1 ADD COLUMN d DEFAULT NULL;
+}
+
+do_preupdate_test 13.2 {
+  DELETE FROM t1 WHERE a=300
+} {DELETE main t1 300 300 0 300 1234 abcdef {}}
+
+do_preupdate_test 13.3 {
+  UPDATE t1 SET d='hello world' WHERE a=200
+} {
+  UPDATE main t1 200 200 0 200 1234 abcdef {} 
+                           200 1234 abcdef {hello world}
+}
+
+do_preupdate_test 13.4 {
+  INSERT INTO t1 DEFAULT VALUES;
+} {
+  INSERT main t1 401 401 0 401 1234 abcdef {}
+}
+
 finish_test
@@ -428,4 +428,25 @@ do_eqp_test 12.3 {
  `--SEARCH t1 USING INTEGER PRIMARY KEY (rowid=?) LEFT-JOIN
 }

+# 2024-09-05 https://sqlite.org/forum/forumpost/8a1e467e905b8d27
+# When performing the Omit-Noop-Join optimization, if FROM clause terms
+# to the right of the omitted join have the reverse-order bit set in the
+# WhereInfo.revMask bitmask, those bits need to be shifted to account
+# for the omitted join.
+#
+reset_db
+do_execsql_test 13.0 {
+  CREATE TABLE t1(a1 INTEGER PRIMARY KEY, b1 INT);
+  CREATE TABLE t2(c2 INT, d2 INTEGER PRIMARY KEY);
+  CREATE TABLE t3(e3 INTEGER PRIMARY KEY);
+  INSERT INTO t1 VALUES(33,0);
+  INSERT INTO t2 VALUES(33,1),(33,2);
+}
+do_execsql_test 13.1 {
+  SELECT t1.a1, t2.d2
+    FROM (t1 LEFT JOIN t3 ON t3.e3=t1.b1) JOIN t2 ON t2.c2=t1.a1
+   WHERE t1.a1=33
+   ORDER BY t2.d2 DESC;
+} {33 2 33 1}
+
 finish_test
@@ -64,4 +64,17 @@ ifcapable vtab {
  } {{\x17} 1 integer 1 1 null {$."\x17"} {$}}
 }

+# JSON PATH parsing bug involving backslash escapes, reported via
+# private email from Florent De'Neve on 2024-09-04.
+#
+do_execsql_test 5.1 {
+  SELECT json_extract('{"A\"Key":1}', '$.A"Key');
+} 1
+do_execsql_test 5.2 {
+  SELECT json_extract('{"A\"Key":1}', '$."A\"Key"');
+} 1
+do_execsql_test 5.3 {
+  SELECT JSON_SET('{}', '$."\"Key"', 1);
+} {{{"\"Key":1}}}
+
 finish_test
@@ -516,6 +516,8 @@ do_test shell1-3.15.3 {
   Options:
     --bom                 Prefix output with a UTF8 byte-order mark
     -e                    Send output to the system text editor
+     --plain               Use text/plain for -w option
+     -w                    Send output to a web browser
     -x                    Send output as CSV to a spreadsheet
 child process exited abnormally}}

@@ -532,6 +534,8 @@ do_test shell1-3.16.2 {
   Options:
     --bom                 Prefix output with a UTF8 byte-order mark
     -e                    Send output to the system text editor
+     --plain               Use text/plain for -w option
+     -w                    Send output to a web browser
     -x                    Send output as CSV to a spreadsheet
 child process exited abnormally}}

@@ -96,4 +96,43 @@ do_test 1.8 {
  list [catch { sqlite3_snapshot_open_blob db3 main $snap } msg] $msg
 } {1 SQLITE_ERROR_SNAPSHOT}

+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 2.0 {
+  PRAGMA journal_mode = wal;
+  CREATE TABLE t1(a, b);
+  INSERT INTO t1 VALUES(1, 2);
+  INSERT INTO t1 VALUES(3, 4);
+} {wal}
+
+sqlite3 db2 test.db
+sqlite3 db3 test.db
+do_execsql_test -db db2 2.0.1 {
+  SELECT * FROM t1
+} {1 2 3 4}
+do_execsql_test -db db3 2.0.2 {
+  SELECT * FROM t1
+} {1 2 3 4}
+
+do_execsql_test -db db2 2.2 {
+  PRAGMA wal_checkpoint;
+} {0 4 4}
+
+do_test 2.1 {
+  db eval { BEGIN }
+  set snap [sqlite3_snapshot_get db main]
+  set {} {}
+} {}
+
+do_execsql_test -db db2 2.3 {
+  INSERT INTO t1 VALUES(5, 6);
+} {}
+
+do_test 2.2 {
+  execsql { BEGIN } db3
+  sqlite3_snapshot_open db3 main $snap
+} {}
+
+sqlite3_snapshot_free $snap
+
 finish_test
@@ -21,7 +21,6 @@ static const char zHelp[] =
  "  --memdb             Use an in-memory database\n"
  "  --mmap SZ           MMAP the first SZ bytes of the database file\n"
  "  --multithread       Set multithreaded mode\n"
-  "  --nolongdouble      Disable the use of long double\n"
  "  --nomemstat         Disable memory statistics\n"
  "  --nomutex           Open db with SQLITE_OPEN_NOMUTEX\n"
  "  --nosync            Set PRAGMA synchronous=OFF\n"
@@ -2352,10 +2351,6 @@ int main(int argc, char **argv){
        ARGC_VALUE_CHECK(1);
        mmapSize = integerValue(argv[++i]);
 #endif
-      }else if( strcmp(z,"nolongdouble")==0 ){
-#ifdef SQLITE_TESTCTRL_USELONGDOUBLE
-        sqlite3_test_control(SQLITE_TESTCTRL_USELONGDOUBLE, 0);
-#endif       
      }else if( strcmp(z,"nomutex")==0 ){
        openFlags |= SQLITE_OPEN_NOMUTEX;
      }else if( strcmp(z,"nosync")==0 ){
@@ -1279,10 +1279,15 @@ proc finalize_testing {} {
         out of $nTest tests"
  } else {
    set cpuinfo {}
-    if {[catch {exec hostname} hname]==0} {set cpuinfo [string trim $hname]}
+    if {[catch {exec hostname} hname]==0} {
+      regsub {\.local$} $hname {} hname
+      set cpuinfo [string trim $hname]
+    }
    append cpuinfo " $::tcl_platform(os)"
    append cpuinfo " [expr {$::tcl_platform(pointerSize)*8}]-bit"
-    append cpuinfo " [string map {E -e} $::tcl_platform(byteOrder)]"
+    if {[string match big* $::tcl_platform(byteOrder)]} {
+      append cpuinfo " [string map {E -e} $::tcl_platform(byteOrder)]"
+    }
    output2 "SQLite [sqlite3 -sourceid]"
    output2 "$nErr errors out of $nTest tests on $cpuinfo"
  }
@@ -1,3 +1,6 @@
+#!/bin/sh
+# Script to runs tests for SQLite.  Run with option "help" for more info. \
+exec tclsh "$0" "$@"

 set dir [pwd]
 set testdir [file normalize [file dirname $argv0]]
@@ -14,8 +17,14 @@ cd $dir
 # recommend that the user build one.
 #
 proc find_interpreter {} {
+  global dir
  set interpreter [file tail [info nameofexec]]
  set rc [catch { package require sqlite3 }]
+  if {$rc} {
+    if {[file readable pkgIndex.tcl] && [catch {source pkgIndex.tcl}]==0} {
+      set rc [catch { package require sqlite3 }]
+    }
+  }
  if {$rc} {
    if { [string match -nocase testfixture* $interpreter]==0
      && [file executable ./testfixture]
@@ -28,8 +37,30 @@ proc find_interpreter {} {
    }
  }
  if {$rc} {
-    puts stderr "Failed to find tcl package sqlite3"
-    puts stderr "Run \"make testfixture\" and then try again..."
+    puts "Cannot find tcl package sqlite3: Trying to build it now..."
+    if {$::tcl_platform(platform)=="windows"} {
+      set bat [open make-tcl-extension.bat w]
+      puts $bat "nmake /f Makefile.msc tclextension"
+      close $bat
+      catch {exec -ignorestderr -- make-tcl-extension.bat}
+    } else {
+      catch {exec make tclextension}
+    }
+    if {[file readable pkgIndex.tcl] && [catch {source pkgIndex.tcl}]==0} {
+      set rc [catch { package require sqlite3 }]
+    }
+    if {$rc==0} {
+      puts "The SQLite tcl extension was successfully built and loaded."
+      puts "Run \"make tclextension-install\" to avoid having to rebuild\
+            it in the future."
+    } else {
+      puts "Unable to build the SQLite tcl extension"
+    }
+  }
+  if {$rc} {
+    puts stderr "Cannot find a working instance of the SQLite tcl extension."
+    puts stderr "Run \"make tclextension\" or \"make testfixture\" and\
+                 try again..."
    exit 1
  }
 }
@@ -54,8 +85,9 @@ proc usage {} {
 Usage: 
    $a0 ?SWITCHES? ?PERMUTATION? ?PATTERNS?
    $a0 PERMUTATION FILE
-    $a0 errors ?-v|--verbose?
+    $a0 errors ?-v|--verbose? ?-s|--summary? ?PATTERN?
    $a0 help
+    $a0 joblist ?PATTERN?
    $a0 njob ?NJOB?
    $a0 script ?-msvc? CONFIG
    $a0 status ?-d SECS? ?--cls?
@@ -112,10 +144,12 @@ The "script" command outputs the script used to build a configuration.
 Add the "-msvc" option for a Windows-compatible script. For a list of
 available configurations enter "$a0 script help".

-The "errors" commands shows the output of all tests that failed in the
+The "errors" commands shows the output of tests that failed in the
 most recent run.  Complete output is shown if the -v or --verbose options
 are used.  Otherwise, an attempt is made to minimize the output to show
-only the parts that contain the error messages.
+only the parts that contain the error messages.  The --summary option just
+shows the jobs that failed.  If PATTERN are provided, the error information
+is only provided for jobs that match PATTERN.

 Full documentation here: https://sqlite.org/src/doc/trunk/doc/testrunner.md
  }]]
@@ -284,6 +318,8 @@ set TRG(schema) {
    state TEXT CHECK( state IN ('','ready','running','done','failed','omit') ),
    ntest INT,                          -- Number of test cases run
    nerr INT,                           -- Number of errors reported
+    svers TEXT,                         -- Reported SQLite version
+    pltfm TEXT,                         -- Host platform reported
    output TEXT                         -- test output
  );

@@ -356,8 +392,8 @@ if {([llength $argv]==2 || [llength $argv]==1)
  sqlite3 mydb $TRG(dbname)
  if {[llength $argv]==2} {
    set param [lindex $argv 1]
-    if {[string is integer $param]==0 || $param<1 || $param>128} {
-      puts stderr "parameter must be an integer between 1 and 128"
+    if {[string is integer $param]==0 || $param<0 || $param>128} {
+      puts stderr "parameter must be an integer between 0 and 128"
      exit 1
    }

@@ -577,44 +613,80 @@ if {[llength $argv]>=1
  exit
 }

+#--------------------------------------------------------------------------
+# Check if this is the "joblist" command:
+#
+if {[llength $argv]>=1 
+ && [string compare -nocase "joblist" [lindex $argv 0]]==0 
+} {
+  set pattern {}
+  for {set ii 1} {$ii<[llength $argv]} {incr ii} {
+    set a0 [lindex $argv $ii]
+    if {$pattern==""} {
+      set pattern [string trim $a0 *]
+    } else {
+      puts "unknown option: \"$a0\""
+      exit 1
+    }
+  }
+  set SQL {SELECT displaytype, displayname, state FROM jobs}
+  if {$pattern!=""} {
+    regsub -all {[^a-zA-Z0-9*.-/]} $pattern ? pattern
+    append SQL " WHERE displayname GLOB '*$pattern*'"
+  }
+  append SQL " ORDER BY starttime"
+
+  if {![file readable $TRG(dbname)]} {
+    puts "Database missing: $TRG(dbname)"
+    exit
+  }
+  sqlite3 mydb $TRG(dbname)
+  mydb timeout 2000
+
+  mydb eval $SQL {
+    set label UNKNOWN
+    switch -- $state {
+      ready {set label READY}
+      done {set label DONE}
+      failed {set label FAILED}
+      omit {set label OMIT}
+      running {set label RUNNING}
+    }
+    puts [format {%-7s %-5s %s} $label $displaytype $displayname]
+  }
+  mydb close
+  exit
+}
+
 # Scan the output of all jobs looking for the summary lines that
 # report the number of test cases and the number of errors.
 # Aggregate these numbers and return them.
 #
 proc aggregate_test_counts {db} {
-  set ncase 0
-  set nerr 0
-  $db eval {SELECT output FROM jobs WHERE displaytype IN ('tcl','fuzz')} {
-    set n 0
-    set m 0
-    if {[regexp {(\d+) errors out of (\d+) tests} $output all n m]
-        && [string is integer -strict $n]
-        && [string is integer -strict $m]} {
-      incr ncase $m
-      incr nerr $n
-    } elseif {[regexp {sessionfuzz.*: *(\d+) cases, (\d+) crash} $output \
-                      all m n]
-              && [string is integer -strict $m]
-              && [string is integer -strict $n]} {
-      incr ncase $m
-      incr nerr $n
-    }
-  }
-  return [list $nerr $ncase]
+  set ne 0
+  set nt 0
+  $db eval {SELECT sum(nerr) AS ne, sum(ntest) as nt FROM jobs} break
+  return [list $ne $nt]
 }

 #--------------------------------------------------------------------------
 # Check if this is the "errors" command:
 #
-if {[llength $argv]>=1 && [llength $argv]<=2
+if {[llength $argv]>=1
 && ([string compare -nocase errors [lindex $argv 0]]==0 ||
     [string match err* [lindex $argv 0]]==1)
 } {
  set verbose 0
+  set pattern {}
+  set summary 0
  for {set ii 1} {$ii<[llength $argv]} {incr ii} {
    set a0 [lindex $argv $ii]
    if {$a0=="-v" || $a0=="--verbose" || $a0=="-verbose"} {
      set verbose 1
+    } elseif {$a0=="-s" || $a0=="--summary" || $a0=="-summary"} {
+      set summary 1
+    } elseif {$pattern==""} {
+      set pattern *[string trim $a0 *]*
    } else {
      puts "unknown option: \"$a0\"".  Use --help for more info."
      exit 1
@@ -622,9 +694,22 @@ if {[llength $argv]>=1 && [llength $argv]<=2
  }
  set cnt 0
  sqlite3 mydb $TRG(dbname)
-  mydb timeout 2000
-  mydb eval {SELECT displaytype, displayname, output
-               FROM jobs WHERE state='failed'} {
+  mydb timeout 5000
+  if {$summary} {
+    set sql "SELECT displayname FROM jobs WHERE state='failed'"
+  } else {
+    set sql "SELECT displaytype, displayname, output FROM jobs \
+              WHERE state='failed'"
+  }
+  if {$pattern!=""} {
+    regsub -all {[^a-zA-Z0-9*/ ?]} $pattern . pattern
+    append sql " AND displayname GLOB '$pattern'"
+  }
+  mydb eval $sql {
+    if {$summary} {
+      puts "FAILED: $displayname"
+      continue
+    }
    puts "**** $displayname ****"
    if {$verbose || $displaytype!="tcl"} {
      puts $output
@@ -637,9 +722,13 @@ if {[llength $argv]>=1 && [llength $argv]<=2
    }
    incr cnt
  }
-  set summary [aggregate_test_counts mydb]
-  mydb close
-  puts "Total [lindex $summary 0] errors out of [lindex $summary 1] tests"
+  if {$pattern==""} {
+    set summary [aggregate_test_counts mydb]
+    mydb close
+    puts "Total [lindex $summary 0] errors out of [lindex $summary 1] tests"
+  } else {
+    mydb close
+  }
  exit
 }

@@ -1105,6 +1194,7 @@ proc add_jobs_from_cmdline {patternlist} {
      }
    }

+    devtest -
    mdevtest {
      set config_set {
        All-O0
@@ -1192,10 +1282,13 @@ proc mark_job_as_finished {jobid output state endtm} {
  set ntest 1
  set nerr 0
  if {$endtm>0} {
-    if {[regexp {\y(\d+) errors out of (\d+) tests} $output all a b]} {
+    set re {\y(\d+) errors out of (\d+) tests( on [^\n]+\n)?}
+    if {[regexp $re $output all a b pltfm]} {
      set nerr $a
      set ntest $b
    }
+    regexp {\ySQLite \d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d [0-9a-fA-F]+} \
+         $output svers
  }
  r_write_db {
    if {$state=="failed"} {
@@ -1204,10 +1297,11 @@ proc mark_job_as_finished {jobid output state endtm} {
    } else {
      set childstate ready
    }
+    if {[info exists pltfm]} {set pltfm [string trim $pltfm]}
    trdb eval {
      UPDATE jobs 
        SET output=$output, state=$state, endtime=$endtm,
-            ntest=$ntest, nerr=$nerr
+            ntest=$ntest, nerr=$nerr, svers=$svers, pltfm=$pltfm
        WHERE jobid=$jobid;
      UPDATE jobs SET state=$childstate WHERE depid=$jobid;
    }
@@ -1460,7 +1554,16 @@ proc run_testset {} {
       FROM jobs WHERE endtime>0
  } break;
  set et [elapsetime $totaltime]
-  puts "$totalerr errors out of $totaltest tests in about $et"
+  set pltfm {}
+  trdb eval {
+     SELECT pltfm, count(*) FROM jobs WHERE pltfm IS NOT NULL
+      ORDER BY 2 DESC LIMIT 1
+  } break
+  puts "$totalerr errors out of $totaltest tests in $et $pltfm"
+  trdb eval {
+     SELECT DISTINCT substr(svers,1,79) as v1 FROM jobs WHERE svers IS NOT NULL
+  } {puts $v1}
+
 }

 # Handle the --buildonly option, if it was specified.
@@ -88,6 +88,7 @@ namespace eval trd {
    --disable-amalgamation --disable-shared
    --enable-session
    -DSQLITE_ENABLE_RBU
+    -DSQLITE_ENABLE_STMT_SCANSTATUS
  }

  # These two are used by [testrunner.tcl mdevtest] (All-O0) and 
@@ -202,7 +203,6 @@ namespace eval trd {
    -DSQLITE_MAX_ATTACHED=125
    -DSQLITE_MAX_MMAP_SIZE=12884901888
    -DSQLITE_ENABLE_SORTER_MMAP=1
-    -DLONGDOUBLE_TYPE=double
    --enable-session
  }
  set build(Device-One) {
@@ -342,7 +342,6 @@ namespace eval trd {
    -DSQLITE_ENABLE_FTS4
    -DSQLITE_ENABLE_RTREE
    -DSQLITE_ENABLE_HIDDEN_COLUMNS
-    -DLONGDOUBLE_TYPE=double
    -DCONFIG_SLOWDOWN_FACTOR=8.0
  }

@@ -127,6 +127,17 @@ foreach tn {1a 1b 1c 1d 1e 1f} {
  db3 close
 }

+# These over-length file and directory names are difficult to delete.
+# The "file delete -force" might not work, depending on the TCL build
+# being used.  So first try to delete using the windows rmdir command.
+#
+set fd [open cleanup.bat w]
+puts $fd "rmdir /q /s $longPath(1)"
+close $fd
+if {[catch {exec cleanup.bat} msg]} {
+  puts "Command \[cleanup.bat\] returns $msg"
+}
+
 file delete -force $fileName
 file delete -force $longPath(3)
 file delete -force $longPath(2)
@@ -17,5 +17,5 @@ gcc -o sqlite3 -g -Os -I. \
   -DSQLITE_ENABLE_RTREE \
   -DHAVE_READLINE \
   ../sqlite/src/shell.c \
-   ../sqlite/src/test_vfstrace.c \
+   ../sqlite/ext/misc/vfstrace.c \
   sqlite3.c -ldl -lreadline -lncurses
@@ -26,7 +26,7 @@
 ** the entire block.
 **
 ** For blocks of more than 16 bytes, the signature is a hex dump of the
-** first 8 bytes followed by a 64-bit has of the entire block.
+** first 8 bytes followed by a 64-bit hash of the entire block.
 */
 static void vlogSignature(unsigned char *p, int n, char *zCksum){
  unsigned int s0 = 0, s1 = 0;
@@ -1084,17 +1084,28 @@ static void ptrmap_coverage_report(const char *zDbName){
    printf("%5llu: PTRMAP page covering %llu..%llu\n", pgno,
           pgno+1, pgno+perPage);
    a = fileRead((pgno-1)*g.pagesize, usable);
-    for(i=0; i+5<=usable && pgno+1+i/5<=g.mxPage; i+=5){
-      const char *zType = "???";
+    for(i=0; i+5<=usable; i+=5){
+      const char *zType;
      u32 iFrom = decodeInt32(&a[i+1]);
+      const char *zExtra = pgno+1+i/5>g.mxPage ? " (off end of DB)" : "";
      switch( a[i] ){
        case 1:  zType = "b-tree root page";        break;
        case 2:  zType = "freelist page";           break;
        case 3:  zType = "first page of overflow";  break;
        case 4:  zType = "later page of overflow";  break;
        case 5:  zType = "b-tree non-root page";    break;
+        default: {
+          if( zExtra[0]==0 ){
+            printf("%5llu: invalid (0x%02x), parent=%u\n", 
+                   pgno+1+i/5, a[i], iFrom);
+          }
+          zType = 0;
+          break;
+        }
+      }
+      if( zType ){
+        printf("%5llu: %s, parent=%u%s\n", pgno+1+i/5, zType, iFrom, zExtra);
      }
-      printf("%5llu: %s, parent=%u\n", pgno+1+i/5, zType, iFrom);
    }
    sqlite3_free(a);
  }
--- a/Show More
+++ b/Show More