diff --git a/Makefile.in b/Makefile.in
index f374aa451c..f078cb68b4 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -944,7 +944,7 @@ clean:
 	rm -f sqlite3.dll sqlite3.lib sqlite3.exp sqlite3.def
 	rm -f sqlite3.c
 	rm -f sqlite3_analyzer$(TEXE) sqlite3_analyzer.c
-	rm -f sqlite-output.vsix
+	rm -f sqlite-*-output.vsix
 
 distclean:	clean
 	rm -f config.log config.status libtool Makefile sqlite3.pc
diff --git a/Makefile.msc b/Makefile.msc
index 2c4d13b9f8..3df86de05e 100644
--- a/Makefile.msc
+++ b/Makefile.msc
@@ -1263,7 +1263,7 @@ clean:
 	del /Q sqlite3.c
 	del /Q sqlite3rc.h
 	del /Q sqlite3_analyzer.exe sqlite3_analyzer.exp sqlite3_analyzer.c
-	del /Q sqlite-output.vsix
+	del /Q sqlite-*-output.vsix
 
 # Dynamic link library section.
 #
diff --git a/ext/fts2/fts2_icu.c b/ext/fts2/fts2_icu.c
index de8e116bb9..2670301f51 100644
--- a/ext/fts2/fts2_icu.c
+++ b/ext/fts2/fts2_icu.c
@@ -118,7 +118,7 @@ static int icuOpen(
   nChar = nInput+1;
   pCsr = (IcuCursor *)sqlite3_malloc(
       sizeof(IcuCursor) +                /* IcuCursor */
-      nChar * sizeof(UChar) +            /* IcuCursor.aChar[] */
+      ((nChar+3)&~3) * sizeof(UChar) +   /* IcuCursor.aChar[] */
       (nChar+1) * sizeof(int)            /* IcuCursor.aOffset[] */
   );
   if( !pCsr ){
@@ -126,7 +126,7 @@ static int icuOpen(
   }
   memset(pCsr, 0, sizeof(IcuCursor));
   pCsr->aChar = (UChar *)&pCsr[1];
-  pCsr->aOffset = (int *)&pCsr->aChar[nChar];
+  pCsr->aOffset = (int *)&pCsr->aChar[(nChar+3)&~3];
 
   pCsr->aOffset[iOut] = iInput;
   U8_NEXT(zInput, iInput, nInput, c); 
diff --git a/ext/fts3/fts3.c b/ext/fts3/fts3.c
index 58414f65db..7a53ac37a3 100644
--- a/ext/fts3/fts3.c
+++ b/ext/fts3/fts3.c
@@ -4743,35 +4743,39 @@ static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){
       nTmp += p->pRight->pPhrase->doclist.nList;
     }
     nTmp += p->pPhrase->doclist.nList;
-    aTmp = sqlite3_malloc(nTmp*2);
-    if( !aTmp ){
-      *pRc = SQLITE_NOMEM;
+    if( nTmp==0 ){
       res = 0;
     }else{
-      char *aPoslist = p->pPhrase->doclist.pList;
-      int nToken = p->pPhrase->nToken;
+      aTmp = sqlite3_malloc(nTmp*2);
+      if( !aTmp ){
+        *pRc = SQLITE_NOMEM;
+        res = 0;
+      }else{
+        char *aPoslist = p->pPhrase->doclist.pList;
+        int nToken = p->pPhrase->nToken;
 
-      for(p=p->pParent;res && p && p->eType==FTSQUERY_NEAR; p=p->pParent){
-        Fts3Phrase *pPhrase = p->pRight->pPhrase;
-        int nNear = p->nNear;
-        res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
-      }
-  
-      aPoslist = pExpr->pRight->pPhrase->doclist.pList;
-      nToken = pExpr->pRight->pPhrase->nToken;
-      for(p=pExpr->pLeft; p && res; p=p->pLeft){
-        int nNear;
-        Fts3Phrase *pPhrase;
-        assert( p->pParent && p->pParent->pLeft==p );
-        nNear = p->pParent->nNear;
-        pPhrase = (
-            p->eType==FTSQUERY_NEAR ? p->pRight->pPhrase : p->pPhrase
-        );
-        res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+        for(p=p->pParent;res && p && p->eType==FTSQUERY_NEAR; p=p->pParent){
+          Fts3Phrase *pPhrase = p->pRight->pPhrase;
+          int nNear = p->nNear;
+          res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+        }
+
+        aPoslist = pExpr->pRight->pPhrase->doclist.pList;
+        nToken = pExpr->pRight->pPhrase->nToken;
+        for(p=pExpr->pLeft; p && res; p=p->pLeft){
+          int nNear;
+          Fts3Phrase *pPhrase;
+          assert( p->pParent && p->pParent->pLeft==p );
+          nNear = p->pParent->nNear;
+          pPhrase = (
+              p->eType==FTSQUERY_NEAR ? p->pRight->pPhrase : p->pPhrase
+              );
+          res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+        }
       }
+
+      sqlite3_free(aTmp);
     }
-
-    sqlite3_free(aTmp);
   }
 
   return res;
diff --git a/ext/fts3/fts3_expr.c b/ext/fts3/fts3_expr.c
index a6e3492242..7612789de5 100644
--- a/ext/fts3/fts3_expr.c
+++ b/ext/fts3/fts3_expr.c
@@ -185,7 +185,7 @@ static int getNextToken(
   rc = sqlite3Fts3OpenTokenizer(pTokenizer, pParse->iLangid, z, n, &pCursor);
   if( rc==SQLITE_OK ){
     const char *zToken;
-    int nToken, iStart, iEnd, iPosition;
+    int nToken = 0, iStart = 0, iEnd = 0, iPosition = 0;
     int nByte;                               /* total space to allocate */
 
     rc = pModule->xNext(pCursor, &zToken, &nToken, &iStart, &iEnd, &iPosition);
@@ -300,7 +300,7 @@ static int getNextString(
     int ii;
     for(ii=0; rc==SQLITE_OK; ii++){
       const char *zByte;
-      int nByte, iBegin, iEnd, iPos;
+      int nByte = 0, iBegin = 0, iEnd = 0, iPos = 0;
       rc = pModule->xNext(pCursor, &zByte, &nByte, &iBegin, &iEnd, &iPos);
       if( rc==SQLITE_OK ){
         Fts3PhraseToken *pToken;
diff --git a/ext/fts3/fts3_icu.c b/ext/fts3/fts3_icu.c
index 18b7948c32..52df8c7d81 100644
--- a/ext/fts3/fts3_icu.c
+++ b/ext/fts3/fts3_icu.c
@@ -119,7 +119,7 @@ static int icuOpen(
   nChar = nInput+1;
   pCsr = (IcuCursor *)sqlite3_malloc(
       sizeof(IcuCursor) +                /* IcuCursor */
-      nChar * sizeof(UChar) +            /* IcuCursor.aChar[] */
+      ((nChar+3)&~3) * sizeof(UChar) +   /* IcuCursor.aChar[] */
       (nChar+1) * sizeof(int)            /* IcuCursor.aOffset[] */
   );
   if( !pCsr ){
@@ -127,7 +127,7 @@ static int icuOpen(
   }
   memset(pCsr, 0, sizeof(IcuCursor));
   pCsr->aChar = (UChar *)&pCsr[1];
-  pCsr->aOffset = (int *)&pCsr->aChar[nChar];
+  pCsr->aOffset = (int *)&pCsr->aChar[(nChar+3)&~3];
 
   pCsr->aOffset[iOut] = iInput;
   U8_NEXT(zInput, iInput, nInput, c); 
diff --git a/ext/fts3/fts3_snippet.c b/ext/fts3/fts3_snippet.c
index 6fce3d0a69..4bee014dcc 100644
--- a/ext/fts3/fts3_snippet.c
+++ b/ext/fts3/fts3_snippet.c
@@ -576,7 +576,7 @@ static int fts3SnippetShift(
         return rc;
       }
       while( rc==SQLITE_OK && iCurrent<(nSnippet+nDesired) ){
-        const char *ZDUMMY; int DUMMY1, DUMMY2, DUMMY3;
+        const char *ZDUMMY; int DUMMY1 = 0, DUMMY2 = 0, DUMMY3 = 0;
         rc = pMod->xNext(pC, &ZDUMMY, &DUMMY1, &DUMMY2, &DUMMY3, &iCurrent);
       }
       pMod->xClose(pC);
@@ -620,8 +620,6 @@ static int fts3SnippetText(
   int iCol = pFragment->iCol+1;   /* Query column to extract text from */
   sqlite3_tokenizer_module *pMod; /* Tokenizer module methods object */
   sqlite3_tokenizer_cursor *pC;   /* Tokenizer cursor open on zDoc/nDoc */
-  const char *ZDUMMY;             /* Dummy argument used with tokenizer */
-  int DUMMY1;                     /* Dummy argument used with tokenizer */
   
   zDoc = (const char *)sqlite3_column_text(pCsr->pStmt, iCol);
   if( zDoc==0 ){
@@ -640,10 +638,23 @@ static int fts3SnippetText(
   }
 
   while( rc==SQLITE_OK ){
-    int iBegin;                   /* Offset in zDoc of start of token */
-    int iFin;                     /* Offset in zDoc of end of token */
-    int isHighlight;              /* True for highlighted terms */
+    const char *ZDUMMY;           /* Dummy argument used with tokenizer */
+    int DUMMY1 = -1;              /* Dummy argument used with tokenizer */
+    int iBegin = 0;               /* Offset in zDoc of start of token */
+    int iFin = 0;                 /* Offset in zDoc of end of token */
+    int isHighlight = 0;          /* True for highlighted terms */
 
+    /* Variable DUMMY1 is initialized to a negative value above. Elsewhere
+    ** in the FTS code the variable that the third argument to xNext points to
+    ** is initialized to zero before the first (*but not necessarily
+    ** subsequent*) call to xNext(). This is done for a particular application
+    ** that needs to know whether or not the tokenizer is being used for
+    ** snippet generation or for some other purpose.
+    **
+    ** Extreme care is required when writing code to depend on this
+    ** initialization. It is not a documented part of the tokenizer interface.
+    ** If a tokenizer is used directly by any code outside of FTS, this
+    ** convention might not be respected.  */
     rc = pMod->xNext(pC, &ZDUMMY, &DUMMY1, &iBegin, &iFin, &iCurrent);
     if( rc!=SQLITE_OK ){
       if( rc==SQLITE_DONE ){
@@ -1333,8 +1344,6 @@ void sqlite3Fts3Offsets(
 ){
   Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
   sqlite3_tokenizer_module const *pMod = pTab->pTokenizer->pModule;
-  const char *ZDUMMY;             /* Dummy argument used with xNext() */
-  int NDUMMY;                     /* Dummy argument used with xNext() */
   int rc;                         /* Return Code */
   int nToken;                     /* Number of tokens in query */
   int iCol;                       /* Column currently being processed */
@@ -1367,9 +1376,11 @@ void sqlite3Fts3Offsets(
   */
   for(iCol=0; iCol<pTab->nColumn; iCol++){
     sqlite3_tokenizer_cursor *pC; /* Tokenizer cursor */
-    int iStart;
-    int iEnd;
-    int iCurrent;
+    const char *ZDUMMY;           /* Dummy argument used with xNext() */
+    int NDUMMY = 0;               /* Dummy argument used with xNext() */
+    int iStart = 0;
+    int iEnd = 0;
+    int iCurrent = 0;
     const char *zDoc;
     int nDoc;
 
diff --git a/ext/fts3/fts3_tokenizer.c b/ext/fts3/fts3_tokenizer.c
index 4a7a17567a..8241be81fc 100644
--- a/ext/fts3/fts3_tokenizer.c
+++ b/ext/fts3/fts3_tokenizer.c
@@ -251,10 +251,10 @@ static void testFunc(
   const char *azArg[64];
 
   const char *zToken;
-  int nToken;
-  int iStart;
-  int iEnd;
-  int iPos;
+  int nToken = 0;
+  int iStart = 0;
+  int iEnd = 0;
+  int iPos = 0;
   int i;
 
   Tcl_Obj *pRet;
diff --git a/ext/fts3/fts3_write.c b/ext/fts3/fts3_write.c
index c9f1743210..7869e638c5 100644
--- a/ext/fts3/fts3_write.c
+++ b/ext/fts3/fts3_write.c
@@ -779,13 +779,13 @@ static int fts3PendingTermsAdd(
   u32 *pnWord                     /* OUT: Number of tokens inserted */
 ){
   int rc;
-  int iStart;
-  int iEnd;
-  int iPos;
+  int iStart = 0;
+  int iEnd = 0;
+  int iPos = 0;
   int nWord = 0;
 
   char const *zToken;
-  int nToken;
+  int nToken = 0;
 
   sqlite3_tokenizer *pTokenizer = p->pTokenizer;
   sqlite3_tokenizer_module const *pModule = pTokenizer->pModule;
@@ -4934,9 +4934,9 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){
         rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, nText, &pT);
         while( rc==SQLITE_OK ){
           char const *zToken;       /* Buffer containing token */
-          int nToken;               /* Number of bytes in token */
-          int iDum1, iDum2;         /* Dummy variables */
-          int iPos;                 /* Position of token in zText */
+          int nToken = 0;           /* Number of bytes in token */
+          int iDum1 = 0, iDum2 = 0; /* Dummy variables */
+          int iPos = 0;             /* Position of token in zText */
 
           rc = pModule->xNext(pT, &zToken, &nToken, &iDum1, &iDum2, &iPos);
           if( rc==SQLITE_OK ){
@@ -5103,9 +5103,9 @@ int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *pCsr){
       rc = sqlite3Fts3OpenTokenizer(pT, pCsr->iLangid, zText, -1, &pTC);
       while( rc==SQLITE_OK ){
         char const *zToken;       /* Buffer containing token */
-        int nToken;               /* Number of bytes in token */
-        int iDum1, iDum2;         /* Dummy variables */
-        int iPos;                 /* Position of token in zText */
+        int nToken = 0;           /* Number of bytes in token */
+        int iDum1 = 0, iDum2 = 0; /* Dummy variables */
+        int iPos = 0;             /* Position of token in zText */
   
         rc = pModule->xNext(pTC, &zToken, &nToken, &iDum1, &iDum2, &iPos);
         for(pDef=pCsr->pDeferred; pDef && rc==SQLITE_OK; pDef=pDef->pNext){
diff --git a/main.mk b/main.mk
index 39dbd5c16e..a48999e6d8 100644
--- a/main.mk
+++ b/main.mk
@@ -549,7 +549,7 @@ TESTFIXTURE_FLAGS += -DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE
 testfixture$(EXE): $(TESTSRC2) libsqlite3.a $(TESTSRC) $(TOP)/src/tclsqlite.c
 	$(TCCX) $(TCL_FLAGS) -DTCLSH=1 $(TESTFIXTURE_FLAGS)                  \
 		$(TESTSRC) $(TESTSRC2) $(TOP)/src/tclsqlite.c                \
-		-o testfixture$(EXE) $(LIBTCL) $(THREADLIB) libsqlite3.a
+		-o testfixture$(EXE) $(LIBTCL) libsqlite3.a $(THREADLIB)
 
 amalgamation-testfixture$(EXE): sqlite3.c $(TESTSRC) $(TOP)/src/tclsqlite.c
 	$(TCCX) $(TCL_FLAGS) -DTCLSH=1 $(TESTFIXTURE_FLAGS)                  \
@@ -622,4 +622,4 @@ clean:
 	rm -f threadtest3 threadtest3.exe
 	rm -f sqlite3.c fts?amal.c tclsqlite3.c
 	rm -f sqlite3_analyzer sqlite3_analyzer.exe sqlite3_analyzer.c
-	rm -f sqlite-output.vsix
+	rm -f sqlite-*-output.vsix
diff --git a/manifest b/manifest
index dd60773dd1..e5ba609ecb 100644
--- a/manifest
+++ b/manifest
@@ -1,9 +1,9 @@
-C Merge\sall\sthe\slatest\score\schanges\sinto\sthe\ssessions\sbranch.
-D 2012-10-15T14:25:16.488
+C Pull\sall\sthe\slatest\strunk\senhancements\sinto\sthe\ssessions\sbranch.
+D 2012-10-30T21:03:48.529
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
-F Makefile.in 5f4f26109f9d80829122e0e09f9cda008fa065fb
+F Makefile.in 82c41c0ed4cc94dd3cc7d498575b84c57c2c2384
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
-F Makefile.msc eeacc62cbb02aa3ef6a5c8bdb5d4e6a70f5ca5b2
+F Makefile.msc 1aba45c2d159c2beb62486e4eaa6e2c96c56dd46
 F Makefile.vxworks b18ad88e9a8c6a001f5cf4a389116a4f1a7ab45f
 F README cd04a36fbc7ea56932a4052d7d0b7f09f27c33d6
 F VERSION edab4af5a4623f8198833ea481ce98ab53750a8d
@@ -45,7 +45,7 @@ F ext/fts2/fts2.c 4ef7d7ecf590da0dd416ac54612c53a7d4175790
 F ext/fts2/fts2.h da5f76c65163301d1068a971fd32f4119e3c95fa
 F ext/fts2/fts2_hash.c 2689e42e1107ea67207f725cf69cf8972d00cf93
 F ext/fts2/fts2_hash.h 9a5b1be94664139f93217a0770d7144425cffb3a
-F ext/fts2/fts2_icu.c 1ea9993a39c9783c2e2d7446d055e9d64411dda0
+F ext/fts2/fts2_icu.c 51c5cd3c04954badd329fa738c95fcdb717b5188
 F ext/fts2/fts2_porter.c 747056987951f743e955c8479f1df21a565720fe
 F ext/fts2/fts2_tokenizer.c 26e993a00b2bd5b6e73c155597361710b12ffe25
 F ext/fts2/fts2_tokenizer.h a7e46462d935a314b2682287f12f27530a3ee08e
@@ -55,24 +55,24 @@ F ext/fts3/README.content fdc666a70d5257a64fee209f97cf89e0e6e32b51
 F ext/fts3/README.syntax a19711dc5458c20734b8e485e75fb1981ec2427a
 F ext/fts3/README.tokenizers e0a8b81383ea60d0334d274fadf305ea14a8c314
 F ext/fts3/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
-F ext/fts3/fts3.c ab90126ee0163539d21d0618d22afa2eb645f7e2
+F ext/fts3/fts3.c a867cafae0235324df64c5775cbf352a3f712cb9
 F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe
 F ext/fts3/fts3Int.h 1e58825246b56259267382d2f9902774c049460a
 F ext/fts3/fts3_aux.c 5205182bd8f372782597888156404766edf5781e
-F ext/fts3/fts3_expr.c dbc7ba4c3a6061adde0f38ed8e9b349568299551
+F ext/fts3/fts3_expr.c ceefcaf91344abbf6ceb3cadf404eef5be6924e6
 F ext/fts3/fts3_hash.c 8dd2d06b66c72c628c2732555a32bc0943114914
 F ext/fts3/fts3_hash.h 8331fb2206c609f9fc4c4735b9ab5ad6137c88ec
-F ext/fts3/fts3_icu.c b85eca4a52e5ec11b94392de5167974c11906d4a
+F ext/fts3/fts3_icu.c e319e108661147bcca8dd511cd562f33a1ba81b5
 F ext/fts3/fts3_porter.c a465b49fcb8249a755792f87516eff182efa42b3
-F ext/fts3/fts3_snippet.c bf67520ae9d2352a65368ed101729ff701c08808
+F ext/fts3/fts3_snippet.c f6ebb3536069ceaa27e9f178f4a59379db44ac10
 F ext/fts3/fts3_term.c a521f75132f9a495bdca1bdd45949b3191c52763
 F ext/fts3/fts3_test.c 348f7d08cae05285794e23dc4fe8b8fdf66e264a
-F ext/fts3/fts3_tokenizer.c e94a8b901066031437ccfe4769fc76370257cede
+F ext/fts3/fts3_tokenizer.c 3664bb8836ab7633cf9da786c9d6fd366be5ae2c
 F ext/fts3/fts3_tokenizer.h 66dec98e365854b6cd2d54f1a96bb6d428fc5a68
 F ext/fts3/fts3_tokenizer1.c 5c98225a53705e5ee34824087478cf477bdb7004
 F ext/fts3/fts3_unicode.c 49e36e6ba59f79e6bd6a8bfe434570fe48d20559
 F ext/fts3/fts3_unicode2.c a863f05f758af36777dffc2facc898bc73fec896
-F ext/fts3/fts3_write.c c30c49f3debb9497a07f15cc4c042815e35474ef
+F ext/fts3/fts3_write.c ba0bb0a91ca792fba5101bd82fa14d8a00a96365
 F ext/fts3/fts3speed.tcl b54caf6a18d38174f1a6e84219950d85e98bb1e9
 F ext/fts3/mkfts3amal.tcl 252ecb7fe6467854f2aa237bf2c390b74e71f100
 F ext/fts3/tool/fts3view.c 6cfc5b67a5f0e09c0d698f9fd012c784bfaa9197
@@ -115,7 +115,7 @@ F ext/session/sqlite3session.h f374c9c4c96e08f67ac418871c29d423245c7673
 F ext/session/test_session.c ea4dc9b4a1895c8e6bddcbfe3838d7eb57df2d99
 F install-sh 9d4de14ab9fb0facae2f48780b874848cbf2f895 x
 F ltmain.sh 3ff0879076df340d2e23ae905484d8c15d5fdea8
-F main.mk 9c55b39d4887aa834ca2e827b7361d95703887bc
+F main.mk faf97ab7bd203e56b5d93975c80abd32c814ddec
 F mkdll.sh 7d09b23c05d56532e9d44a50868eb4b12ff4f74a
 F mkextu.sh 416f9b7089d80e5590a29692c9d9280a10dbad9f
 F mkextw.sh 4123480947681d9b434a5e7b1ee08135abe409ac
@@ -133,7 +133,7 @@ F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
 F src/backup.c cab40f2c1fe79d6eb93d3b4086c78c41ad2fa5d0
 F src/bitvec.c 26675fe8e431dc555e6f2d0e11e651d172234aa1
 F src/btmutex.c 976f45a12e37293e32cae0281b15a21d48a8aaa7
-F src/btree.c 299377f0793038ad3ea322907fbda7fbea615094
+F src/btree.c eccee944cb2221e919d7a855e5928d8643194b14
 F src/btree.h 3ad7964d6c5b1c7bff569aab6adfa075f8bf06cd
 F src/btreeInt.h 4e5c2bd0f9b36b2a815a6d84f771a61a65830621
 F src/build.c f35dac52924a6e8e6346a90f0c195a84e28b6f21
@@ -141,13 +141,13 @@ F src/callback.c d7e46f40c3cf53c43550b7da7a1d0479910b62cc
 F src/complete.c dc1d136c0feee03c2f7550bafc0d29075e36deac
 F src/ctime.c 72a70dcfda75d3a1f81041ce4573e7afddcd8e4e
 F src/date.c 067a81c9942c497aafd2c260e13add8a7d0c7dd4
-F src/delete.c e44a1b66cd3dc1e9e2c74147ee4991214e6e6978
-F src/expr.c 57fb8e7a05d4147e40b9f4c439e37ed2abab9332
+F src/delete.c 9bc9463952bdc9fc43111b1f9c83a0af9b8e2239
+F src/expr.c 152ba793a8747061c0c332857d0e4d4fd52d4397
 F src/fault.c 160a0c015b6c2629d3899ed2daf63d75754a32bb
 F src/fkey.c c82a04e7a92bb728f9ab972b76590403283be2af
 F src/func.c cbb90dc84b22eea25caf39528d342279e61b8898
 F src/global.c fb44b11e02e06c995e6ed6642509edd23599d584
-F src/hash.c a4031441741932da9e7a65bee2b36b5d0e81c073
+F src/hash.c ac3470bbf1ca4ae4e306a8ecb0fdf1731810ffe4
 F src/hash.h 2894c932d84d9f892d4b4023a75e501f83050970
 F src/hwtime.h d32741c8f4df852c7d959236615444e2b1063b08
 F src/insert.c 6273647b67e27e3f81b7d1fd144307ea726841d0
@@ -155,7 +155,7 @@ F src/journal.c 552839e54d1bf76fb8f7abe51868b66acacf6a0e
 F src/legacy.c a199d7683d60cef73089e892409113e69c23a99f
 F src/lempar.c cdf0a000315332fc9b50b62f3b5e22e080a0952b
 F src/loadext.c f20382fbaeec832438a1ba7797bee3d3c8a6d51d
-F src/main.c 5cee8048dde78b2b47f5c2090cbb31b10d190673
+F src/main.c febaf66b42c36433b170e4704fef5b8b073a6d61
 F src/malloc.c fe085aa851b666b7c375c1ff957643dc20a04bf6
 F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
 F src/mem1.c 437c7c4af964895d4650f29881df63535caaa1fa
@@ -172,9 +172,9 @@ F src/notify.c 976dd0f6171d4588e89e874fcc765e92914b6d30
 F src/os.c e1acdc09ff3ac2412945cca9766e2dcf4675f31c
 F src/os.h 027491c77d2404c0a678bb3fb06286f331eb9b57
 F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
-F src/os_unix.c 0d3a39dd576c9f384fd7772a2dadc67b144c6ce7
-F src/os_win.c 28bd027791252a4012dffd4d64355a1eb84d761c
-F src/pager.c 36642c0955c19840b5445e7e9da7b5b0d8235346
+F src/os_unix.c 603d020fe6c58047794cc72c05c7c8f4a82a0579
+F src/os_win.c 43ec1285357e5d5d919cb0492eac775c58ad7d12
+F src/pager.c ee59fef31673d5124413c5a801cfd9ef3e6766d3
 F src/pager.h 1109a06578ec5574dc2c74cf8d9f69daf36fe3e0
 F src/parse.y f29df90bd3adc64b33114ab1de9fb7768fcf2099
 F src/pcache.c f8043b433a57aba85384a531e3937a804432a346
@@ -186,14 +186,14 @@ F src/printf.c 4a9f882f1c1787a8b494a2987765acf9d97ac21f
 F src/random.c cd4a67b3953b88019f8cd4ccd81394a8ddfaba50
 F src/resolve.c 7b986a715ac281643309c29257bb58cfae7aa810
 F src/rowset.c 64655f1a627c9c212d9ab497899e7424a34222e0
-F src/select.c 2a82736faeca1fe93315eda20c691d68ec13bb6c
-F src/shell.c 8ee5a3cb502e2d574f97b43972e6c1e275e7bec7
+F src/select.c 3a8baf4719f9723b4e0b43f2baa60692d0d921f8
+F src/shell.c 24cd0aa74aff73ea08594629faead564c4c2a286
 F src/sqlite.h.in d460ae07ecdd1c820272d9c217547c7b572cb4b7
 F src/sqlite3.rc fea433eb0a59f4c9393c8e6d76a6e2596b1fe0c0
 F src/sqlite3ext.h 6904f4aadf976f95241311fbffb00823075d9477
-F src/sqliteInt.h c00feec4f6debb1cb4bad802d2c7fe5050e744ca
+F src/sqliteInt.h 205fa7fd18a7e6e0ed2ff9cfbccf36fb51304ee4
 F src/sqliteLimit.h 164b0e6749d31e0daa1a4589a169d31c0dec7b3d
-F src/status.c 35939e7e03abf1b7577ce311f48f682c40de3208
+F src/status.c 53463144deb5dfac0a66b3be4dd7844b8f8a4c98
 F src/table.c 2cd62736f845d82200acfa1287e33feb3c15d62e
 F src/tclsqlite.c 289be7b639406314813219ee7bc043d21f36ab12
 F src/test1.c 936afc02766403e5debca49a1817a780e116df7e
@@ -201,7 +201,7 @@ F src/test2.c 4178056dd1e7d70f954ad8a1e3edb71a2a784daf
 F src/test3.c 3c3c2407fa6ec7a19e24ae23f7cb439d0275a60d
 F src/test4.c bf9fa9bece01de08e6f5e02314e4af5c13590dfa
 F src/test5.c a6d1ac55ac054d0b2b8f37b5e655b6c92645a013
-F src/test6.c 417e1e214734393c24a8ee80b41485a9c4169123
+F src/test6.c 938794c970ed6810036c8d28450ca28166524bf7
 F src/test7.c 2e0781754905c8adc3268d8f0967e7633af58843
 F src/test8.c 8bcce65e5ee027fbfd7da41d28371aabbfd369ff
 F src/test9.c bea1e8cf52aa93695487badedd6e1886c321ea60
@@ -217,12 +217,12 @@ F src/test_fuzzer.c 1d26aa965120420bc14807da29d4d4541bfa6148
 F src/test_hexio.c abfdecb6fa58c354623978efceb088ca18e379cd
 F src/test_init.c 3cbad7ce525aec925f8fda2192d576d47f0d478a
 F src/test_intarray.c 07ddcebe4097d400ffca362770f1d883c112387a
-F src/test_intarray.h 489edb9068bb926583445cb02589344961054207
+F src/test_intarray.h b999bb18d090b8d9d9c49d36ec37ef8f341fe169
 F src/test_journal.c f5c0a05b7b3d5930db769b5ee6c3766dc2221a64
 F src/test_loadext.c df586c27176e3c2cb2e099c78da67bf14379a56e
 F src/test_malloc.c 01cd65ae7ae93de9fbf8214d1ee6b4eba4850700
 F src/test_multiplex.c ac0fbc1748e5b86a41a1d7a84654fae0d53a881d
-F src/test_multiplex.h e99c571bc4968b7a9363b661481f3934bfead61d
+F src/test_multiplex.h 9b63b95f07acedee425fdfe49a47197c9bf5f9d8
 F src/test_mutex.c a6bd7b9cf6e19d989e31392b06ac8d189f0d573e
 F src/test_onefile.c 0396f220561f3b4eedc450cef26d40c593c69a25
 F src/test_osinst.c 90a845c8183013d80eccb1f29e8805608516edba
@@ -247,21 +247,21 @@ F src/trigger.c 3f258307040173aff383eb23fb74c44fe829078c
 F src/update.c abb0fcabe551dae0a133fd2a4370b5a8c23b1831
 F src/utf.c 8d819e2e5104a430fc2005f018db14347c95a38f
 F src/util.c 0af2e515dc0dabacec931bca39525f6c3f1c5455
-F src/vacuum.c 587a52bb8833d7ac15af8916f25437e2575028bd
-F src/vdbe.c e8e2e34c23a474c38f494d572a0d8accaabd0b4a
-F src/vdbe.h 87b8ff40de3f55dbcdc33029416862f517c37a2f
-F src/vdbeInt.h 39acf85fa83f98e27e728722a0f53daf7d174b61
+F src/vacuum.c 2727bdd08847fcb6b2d2da6d14f018910e8645d3
+F src/vdbe.c 640a7e140c7dc0465eff7e515252e434ca77286e
+F src/vdbe.h 1223e2548e0970cf96f573ff6b99f804a36ad683
+F src/vdbeInt.h 2de43968dc47f1961d5bc76aa3cb68eacf433a7c
 F src/vdbeapi.c 58fdcd56109c05876f69c25d47a138ef370d3647
-F src/vdbeaux.c 1005a2ea2cbbe5d2841367eebae67ce848a6247a
+F src/vdbeaux.c 5f53f96cda10e467ae308876157cad42572d9299
 F src/vdbeblob.c 11248c6362389569764682eb0f59ce910f3cc381
 F src/vdbemem.c cb55e84b8e2c15704968ee05f0fae25883299b74
-F src/vdbesort.c 0dc1b274dcb4d4c8e71b0b2b15261f286caba39b
+F src/vdbesort.c c61ca318681c0e7267da8be3abfca8469652a7e9
 F src/vdbetrace.c 8bd5da325fc90f28464335e4cc4ad1407fe30835
-F src/vtab.c 9c64ae18af78c740610df841c6f49fc2d240a279
+F src/vtab.c b05e5f1f4902461ba9f5fc49bb7eb7c3a0741a83
 F src/wal.c f5c7b5027d0ed0e9bc9afeb4a3a8dfea762ec7d2
 F src/wal.h 29c197540b19044e6cd73487017e5e47a1d3dac6
 F src/walker.c 3d75ba73de15e0f8cd0737643badbeb0e002f07b
-F src/where.c 3e6c1f9efe4c6a029b0a750e0f6a63964f43bcce
+F src/where.c 6a753aa008de6494e64dd265a27afbb0ad80ccf5
 F test/8_3_names.test 631ea964a3edb091cf73c3b540f6bcfdb36ce823
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
 F test/aggnested.test 0be144b453e0622a085fae8665c32f5676708e00
@@ -370,7 +370,7 @@ F test/crash3.test 8f5de9d32ab9ab95475a9efe7f47a940aa889418
 F test/crash4.test fe2821baf37168dc59dd733dcf7dba2a401487bc
 F test/crash5.test 13b9ca94e048194bca070e26160ce76b406c56be
 F test/crash6.test 4c56f1e40d0291e1110790a99807aa875b1647ba
-F test/crash7.test 6c6a369af266af2ef50ab34df8f94d719065e2c1
+F test/crash7.test 1a194c4900a255258cf94b7fcbfd29536db572df
 F test/crash8.test 38767cb504bbe491de6be4a7006b154973a2309f
 F test/crashtest1.c 09c1c7d728ccf4feb9e481671e29dda5669bbcc2
 F test/createtab.test b5de160630b209c4b8925bdcbbaf48cc90b67fe8
@@ -498,7 +498,7 @@ F test/fts3fault.test cb72dccb0a3b9f730f16c5240f3fcb9303eb1660
 F test/fts3fault2.test 3198eef2804deea7cac8403e771d9cbcb752d887
 F test/fts3first.test dbdedd20914c8d539aa3206c9b34a23775644641
 F test/fts3malloc.test b86ea33db9e8c58c0c2f8027a9fcadaf6a1568be
-F test/fts3matchinfo.test 15edde2c4d373d60449658176af7164d622a62f0
+F test/fts3matchinfo.test ecb08f586d027eb03941bcfcded6cb9d8ccb3a66
 F test/fts3near.test 2e318ee434d32babd27c167142e2b94ddbab4844
 F test/fts3prefix.test b36d4f00b128a51e7b386cc013a874246d9d7dc1
 F test/fts3prefix2.test 477ca96e67f60745b7ac931cfa6e9b080c562da5
@@ -623,8 +623,8 @@ F test/memdb.test 708a028d6d373e5b3842e4bdc8ba80998c9a4da6
 F test/memleak.test 10b9c6c57e19fc68c32941495e9ba1c50123f6e2
 F test/memsubsys1.test a8f9e37567453a5d1d9d37ec102d4d88ab6be33f
 F test/memsubsys2.test 3a1c1a9de48e5726faa85108b02459fae8cb9ee9
-F test/minmax.test 722d80816f7e096bf2c04f4111f1a6c1ba65453d
-F test/minmax2.test 33504c01a03bd99226144e4b03f7631a274d66e0
+F test/minmax.test c61518429e66e228efc79661fbd2dc3e4924ec44
+F test/minmax2.test b44bae787fc7b227597b01b0ca5575c7cb54d3bc
 F test/minmax3.test cc1e8b010136db0d01a6f2a29ba5a9f321034354
 F test/minmax4.test 536a3360470633a177e42fbc19660d146b51daef
 F test/misc1.test 889b40722442380a2f6575f30831b32b2372d70e
@@ -719,7 +719,7 @@ F test/shared8.test b27befbefbe7f4517f1d6b7ff8f64a41ec74165d
 F test/shared9.test 614a3ca431adc73c857632deb4eff75bcaee40ec
 F test/shared_err.test 91e26ec4f3fbe07951967955585137e2f18993de
 F test/sharedlock.test ffa0a3c4ac192145b310f1254f8afca4d553eabf
-F test/shell1.test 272384163432c0efd2c6817396beb0d119565d53
+F test/shell1.test 340125225cc96c7f48d59a869aaf82866e481007
 F test/shell2.test 037d6ad16e873354195d30bb2dc4b5321788154a
 F test/shell3.test 9196c42772d575685e722c92b4b39053c6ebba59
 F test/shell4.test aa4eef8118b412d1a01477a53426ece169ea86a9
@@ -773,7 +773,7 @@ F test/tkt-26ff0c2d1e.test 888324e751512972c6e0d1a09df740d8f5aaf660
 F test/tkt-2a5629202f.test 1ab32e084e9fc3d36be6dee2617530846a0eb0b6
 F test/tkt-2d1a5c67d.test b028a811049eb472cb2d3a43fc8ce4f6894eebda
 F test/tkt-2ea2425d34.test 1cf13e6f75d149b3209a0cb32927a82d3d79fb28
-F test/tkt-31338dca7e.test 1f714c14b6682c5db715e0bda347926a3456f7a9
+F test/tkt-31338dca7e.test 6fb8807851964da0d24e942f2e19c7c705b9fb58
 F test/tkt-313723c356.test c47f8a9330523e6f35698bf4489bcb29609b53ac
 F test/tkt-385a5b56b9.test 7782a382912a51f09f1d1a1442bca1e75f9c549b
 F test/tkt-38cb5df375.test f3cc8671f1eb604d4ae9cf886ed4366bec656678
@@ -864,7 +864,7 @@ F test/tkt3461.test 228ea328a5a21e8663f80ee3d212a6ad92549a19
 F test/tkt3493.test 1686cbde85f8721fc1bdc0ee72f2ef2f63139218
 F test/tkt3508.test d75704db9501625c7f7deec119fcaf1696aefb7d
 F test/tkt3522.test 22ce2ebbcb04a6be56c0977d405c207967318fd6
-F test/tkt3527.test 9e8f28a706c772d5a7cd1020c946fab6c74e3ae0
+F test/tkt3527.test 1a6a48441b560bdc53aec581a868eb576234874d
 F test/tkt3541.test 5dc257bde9bc833ab9cc6844bf170b998dbb950a
 F test/tkt3554.test f599967f279077bace39220cbe76085c7b423725
 F test/tkt3581.test 1966b7193f1e3f14951cce8c66907ae69454e9a3
@@ -990,7 +990,7 @@ F test/wherelimit.test 5e9fd41e79bb2b2d588ed999d641d9c965619b31
 F test/win32lock.test b2a539e85ae6b2d78475e016a9636b4451dc7fb9
 F test/zeroblob.test caaecfb4f908f7bc086ed238668049f96774d688
 F test/zerodamage.test e7f77fded01dfcdf92ac2c5400f1e35d7a21463c
-F tool/build-all-msvc.bat 76b835e0ab91e30f22d8aa48db9dea4d2dc59e9f x
+F tool/build-all-msvc.bat 74fb6e5cca66ebdb6c9bbafb2f8b802f08146d38 x
 F tool/build-shell.sh b64a481901fc9ffe5ca8812a2a9255b6cfb77381
 F tool/checkSpacing.c 810e51703529a204fc4e1eb060e9ab663e3c06d2
 F tool/diffdb.c 7524b1b5df217c20cd0431f6789851a4e0cb191b
@@ -1008,7 +1008,7 @@ F tool/mksqlite3c-noext.tcl 8bce31074e4cbe631bb7676526a048335f4c9f02
 F tool/mksqlite3c.tcl 589c7f44e990be1b8443cfe4808dce392b0327fa
 F tool/mksqlite3h.tcl 78013ad79a5e492e5f764f3c7a8ef834255061f8
 F tool/mksqlite3internalh.tcl 3dca7bb5374cee003379b8cbac73714f610ef795
-F tool/mkvsix.tcl a27951f30bb39c3504196610f17f687fc0b1c94d
+F tool/mkvsix.tcl 0be7f7a591f1e83f9199cb82911b66668ca484c9
 F tool/offsets.c fe4262fdfa378e8f5499a42136d17bf3b98f6091
 F tool/omittest.tcl 4665982e95a6e5c1bd806cf7bc3dea95be422d77
 F tool/opcodeDoc.awk b3a2a3d5d3075b8bd90b7afe24283efdd586659c
@@ -1033,8 +1033,8 @@ F tool/tostr.awk e75472c2f98dd76e06b8c9c1367f4ab07e122d06
 F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
-F tool/win/sqlite.vsix 67d8a99aceb56384a81b3f30d6c71743146d2cc9
-P f1fbb8c5bfa84e84e0b8e2872d83b06a0c0d5acc 8745530b9a877db77fe2ca3ea9c6bc99ce033055
-R 2fad70ce160d67d476b8ae23c3ce13a3
+F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
+P 76767d651fe733614b1719aef9ad5ed4568234e4 9dca18f5fea84afbecb314ee1cdfb98430656af3
+R 44966c032a1121fa311efd7f4c01d9a9
 U drh
-Z 004a84637f514b12189e7dcddda1b18b
+Z f9e45ab7bfa5d5b4a8fa6d0808ba86fd
diff --git a/manifest.uuid b/manifest.uuid
index 669e24dd0d..5b8cae9332 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-76767d651fe733614b1719aef9ad5ed4568234e4
\ No newline at end of file
+fce667f2d93a4ba65ccf1e748469576a3cd7ffcc
\ No newline at end of file
diff --git a/src/btree.c b/src/btree.c
index c0cda1281b..246843b79e 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -5744,7 +5744,7 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
   assert( pPage->nOverflow==1 );
 
   /* This error condition is now caught prior to reaching this function */
-  if( pPage->nCell<=0 ) return SQLITE_CORRUPT_BKPT;
+  if( pPage->nCell==0 ) return SQLITE_CORRUPT_BKPT;
 
   /* Allocate a new page. This page will become the right-sibling of 
   ** pPage. Make the parent page writable, so that the new divider cell
diff --git a/src/delete.c b/src/delete.c
index 1411b7c61f..8bca679510 100644
--- a/src/delete.c
+++ b/src/delete.c
@@ -112,6 +112,7 @@ void sqlite3MaterializeView(
       sqlite3SelectDelete(db, pDup);
     }
     pDup = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 0, 0, 0);
+    if( pDup ) pDup->selFlags |= SF_Materialize;
   }
   sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur);
   sqlite3Select(pParse, pDup, &dest);
diff --git a/src/expr.c b/src/expr.c
index 04216b1711..3eee3c6d69 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -939,6 +939,7 @@ SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){
     pNewItem->addrFillSub = pOldItem->addrFillSub;
     pNewItem->regReturn = pOldItem->regReturn;
     pNewItem->isCorrelated = pOldItem->isCorrelated;
+    pNewItem->viaCoroutine = pOldItem->viaCoroutine;
     pNewItem->zIndex = sqlite3DbStrDup(db, pOldItem->zIndex);
     pNewItem->notIndexed = pOldItem->notIndexed;
     pNewItem->pIndex = pOldItem->pIndex;
diff --git a/src/hash.c b/src/hash.c
index d7625d3913..e81dcf95e4 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -193,7 +193,7 @@ static void removeElementGivenHash(
   }
   sqlite3_free( elem );
   pH->count--;
-  if( pH->count<=0 ){
+  if( pH->count==0 ){
     assert( pH->first==0 );
     assert( pH->count==0 );
     sqlite3HashClear(pH);
diff --git a/src/main.c b/src/main.c
index 0d1e092c52..5778f8780a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3040,7 +3040,7 @@ int sqlite3_test_control(int op, ...){
     */
     case SQLITE_TESTCTRL_OPTIMIZATIONS: {
       sqlite3 *db = va_arg(ap, sqlite3*);
-      db->dbOptFlags = (u8)(va_arg(ap, int) & 0xff);
+      db->dbOptFlags = (u16)(va_arg(ap, int) & 0xffff);
       break;
     }
 
diff --git a/src/os_unix.c b/src/os_unix.c
index 5fbac00713..9b6c9401a1 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -218,6 +218,10 @@ struct unixFile {
   const char *zPath;                  /* Name of the file */
   unixShm *pShm;                      /* Shared memory segment information */
   int szChunk;                        /* Configured by FCNTL_CHUNK_SIZE */
+#ifdef __QNXNTO__
+  int sectorSize;                     /* Device sector size */
+  int deviceCharacteristics;          /* Precomputed device characteristics */
+#endif
 #if SQLITE_ENABLE_LOCKING_STYLE
   int openFlags;                      /* The flags specified at open() */
 #endif
@@ -3638,10 +3642,92 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
 ** a database and its journal file) that the sector size will be the
 ** same for both.
 */
-static int unixSectorSize(sqlite3_file *pFile){
-  (void)pFile;
+#ifndef __QNXNTO__ 
+static int unixSectorSize(sqlite3_file *NotUsed){
+  UNUSED_PARAMETER(NotUsed);
   return SQLITE_DEFAULT_SECTOR_SIZE;
 }
+#endif
+
+/*
+** The following version of unixSectorSize() is optimized for QNX.
+*/
+#ifdef __QNXNTO__
+#include <sys/dcmd_blk.h>
+#include <sys/statvfs.h>
+static int unixSectorSize(sqlite3_file *id){
+  unixFile *pFile = (unixFile*)id;
+  if( pFile->sectorSize == 0 ){
+    struct statvfs fsInfo;
+       
+    /* Set defaults for non-supported filesystems */
+    pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE;
+    pFile->deviceCharacteristics = 0;
+    if( fstatvfs(pFile->h, &fsInfo) == -1 ) {
+      return pFile->sectorSize;
+    }
+
+    if( !strcmp(fsInfo.f_basetype, "tmp") ) {
+      pFile->sectorSize = fsInfo.f_bsize;
+      pFile->deviceCharacteristics =
+        SQLITE_IOCAP_ATOMIC4K |       /* All ram filesystem writes are atomic */
+        SQLITE_IOCAP_SAFE_APPEND |    /* growing the file does not occur until
+                                      ** the write succeeds */
+        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
+                                      ** so it is ordered */
+        0;
+    }else if( strstr(fsInfo.f_basetype, "etfs") ){
+      pFile->sectorSize = fsInfo.f_bsize;
+      pFile->deviceCharacteristics =
+        /* etfs cluster size writes are atomic */
+        (pFile->sectorSize / 512 * SQLITE_IOCAP_ATOMIC512) |
+        SQLITE_IOCAP_SAFE_APPEND |    /* growing the file does not occur until
+                                      ** the write succeeds */
+        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
+                                      ** so it is ordered */
+        0;
+    }else if( !strcmp(fsInfo.f_basetype, "qnx6") ){
+      pFile->sectorSize = fsInfo.f_bsize;
+      pFile->deviceCharacteristics =
+        SQLITE_IOCAP_ATOMIC |         /* All filesystem writes are atomic */
+        SQLITE_IOCAP_SAFE_APPEND |    /* growing the file does not occur until
+                                      ** the write succeeds */
+        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
+                                      ** so it is ordered */
+        0;
+    }else if( !strcmp(fsInfo.f_basetype, "qnx4") ){
+      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 |
+        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
+                                      ** so it is ordered */
+        0;
+    }else if( strstr(fsInfo.f_basetype, "dos") ){
+      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 |
+        SQLITE_IOCAP_SEQUENTIAL |     /* The ram filesystem has no write behind
+                                      ** so it is ordered */
+        0;
+    }else{
+      pFile->deviceCharacteristics =
+        SQLITE_IOCAP_ATOMIC512 |      /* blocks are atomic */
+        SQLITE_IOCAP_SAFE_APPEND |    /* growing the file does not occur until
+                                      ** the write succeeds */
+        0;
+    }
+  }
+  /* Last chance verification.  If the sector size isn't a multiple of 512
+  ** then it isn't valid.*/
+  if( pFile->sectorSize % 512 != 0 ){
+    pFile->deviceCharacteristics = 0;
+    pFile->sectorSize = SQLITE_DEFAULT_SECTOR_SIZE;
+  }
+  return pFile->sectorSize;
+}
+#endif /* __QNXNTO__ */
 
 /*
 ** Return the device characteristics for the file.
@@ -3658,11 +3744,15 @@ static int unixSectorSize(sqlite3_file *pFile){
 */
 static int unixDeviceCharacteristics(sqlite3_file *id){
   unixFile *p = (unixFile*)id;
+  int rc = 0;
+#ifdef __QNXNTO__
+  if( p->sectorSize==0 ) unixSectorSize(id);
+  rc = p->deviceCharacteristics;
+#endif
   if( p->ctrlFlags & UNIXFILE_PSOW ){
-    return SQLITE_IOCAP_POWERSAFE_OVERWRITE;
-  }else{
-    return 0;
+    rc |= SQLITE_IOCAP_POWERSAFE_OVERWRITE;
   }
+  return rc;
 }
 
 #ifndef SQLITE_OMIT_WAL
diff --git a/src/os_win.c b/src/os_win.c
index 2d4c74af9a..3c92b43d4e 100644
--- a/src/os_win.c
+++ b/src/os_win.c
@@ -2192,7 +2192,8 @@ static int winWrite(
         if( retryIoerr(&nRetry, &lastErrno) ) continue;
         break;
       }
-      if( nWrite<=0 ){
+      assert( nWrite==0 || nWrite<=(DWORD)nRem );
+      if( nWrite==0 || nWrite>(DWORD)nRem ){
         lastErrno = osGetLastError();
         break;
       }
diff --git a/src/pager.c b/src/pager.c
index cec0c8ff8e..a96dc45b82 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -5885,7 +5885,7 @@ int sqlite3PagerCommitPhaseOne(
   
       /* If this transaction has made the database smaller, then all pages
       ** being discarded by the truncation must be written to the journal
-      ** file. This can only happen in auto-vacuum mode.
+      ** file.
       **
       ** Before reading the pages with page numbers larger than the 
       ** current value of Pager.dbSize, set dbSize back to the value
@@ -5893,7 +5893,6 @@ int sqlite3PagerCommitPhaseOne(
       ** calls to sqlite3PagerGet() return zeroed pages instead of 
       ** reading data from the database file.
       */
-  #ifndef SQLITE_OMIT_AUTOVACUUM
       if( pPager->dbSize<pPager->dbOrigSize 
        && pPager->journalMode!=PAGER_JOURNALMODE_OFF
       ){
@@ -5913,7 +5912,6 @@ int sqlite3PagerCommitPhaseOne(
         }
         pPager->dbSize = dbSize;
       } 
-  #endif
   
       /* Write the master journal name into the journal file. If a master 
       ** journal file name has already been written to the journal file, 
diff --git a/src/select.c b/src/select.c
index 51847ffbdb..cba766f99d 100644
--- a/src/select.c
+++ b/src/select.c
@@ -3098,10 +3098,9 @@ static int flattenSubquery(
     pList = pParent->pEList;
     for(i=0; i<pList->nExpr; i++){
       if( pList->a[i].zName==0 ){
-        const char *zSpan = pList->a[i].zSpan;
-        if( ALWAYS(zSpan) ){
-          pList->a[i].zName = sqlite3DbStrDup(db, zSpan);
-        }
+        char *zName = sqlite3DbStrDup(db, pList->a[i].zSpan);
+        sqlite3Dequote(zName);
+        pList->a[i].zName = zName;
       }
     }
     substExprList(db, pParent->pEList, iParent, pSub->pEList);
@@ -3910,8 +3909,17 @@ int sqlite3Select(
     int isAggSub;
 
     if( pSub==0 ) continue;
+
+    /* Sometimes the code for a subquery will be generated more than
+    ** once, if the subquery is part of the WHERE clause in a LEFT JOIN,
+    ** for example.  In that case, do not regenerate the code to manifest
+    ** a view or the co-routine to implement a view.  The first instance
+    ** is sufficient, though the subroutine to manifest the view does need
+    ** to be invoked again. */
     if( pItem->addrFillSub ){
-      sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub);
+      if( pItem->viaCoroutine==0 ){
+        sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub);
+      }
       continue;
     }
 
@@ -3932,6 +3940,35 @@ int sqlite3Select(
         p->selFlags |= SF_Aggregate;
       }
       i = -1;
+    }else if( pTabList->nSrc==1 && (p->selFlags & SF_Materialize)==0
+      && OptimizationEnabled(db, SQLITE_SubqCoroutine)
+    ){
+      /* Implement a co-routine that will return a single row of the result
+      ** set on each invocation.
+      */
+      int addrTop;
+      int addrEof;
+      pItem->regReturn = ++pParse->nMem;
+      addrEof = ++pParse->nMem;
+      sqlite3VdbeAddOp0(v, OP_Goto);
+      addrTop = sqlite3VdbeAddOp1(v, OP_OpenPseudo, pItem->iCursor);
+      sqlite3VdbeChangeP5(v, 1);
+      VdbeComment((v, "coroutine for %s", pItem->pTab->zName));
+      pItem->addrFillSub = addrTop;
+      sqlite3VdbeAddOp2(v, OP_Integer, 0, addrEof);
+      sqlite3VdbeChangeP5(v, 1);
+      sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn);
+      explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId);
+      sqlite3Select(pParse, pSub, &dest);
+      pItem->pTab->nRowEst = (unsigned)pSub->nSelectRow;
+      pItem->viaCoroutine = 1;
+      sqlite3VdbeChangeP2(v, addrTop, dest.iSdst);
+      sqlite3VdbeChangeP3(v, addrTop, dest.nSdst);
+      sqlite3VdbeAddOp2(v, OP_Integer, 1, addrEof);
+      sqlite3VdbeAddOp1(v, OP_Yield, pItem->regReturn);
+      VdbeComment((v, "end %s", pItem->pTab->zName));
+      sqlite3VdbeJumpHere(v, addrTop-1);
+      sqlite3ClearTempRegCache(pParse);
     }else{
       /* Generate a subroutine that will fill an ephemeral table with
       ** the content of this subquery.  pItem->addrFillSub will point
diff --git a/src/shell.c b/src/shell.c
index 7ad60c505b..adb8165434 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -2824,11 +2824,14 @@ static const char zOptions[] =
   "   -bail                stop after hitting an error\n"
   "   -batch               force batch I/O\n"
   "   -column              set output mode to 'column'\n"
-  "   -cmd command         run \"command\" before reading stdin\n"
+  "   -cmd COMMAND         run \"COMMAND\" before reading stdin\n"
   "   -csv                 set output mode to 'csv'\n"
   "   -echo                print commands before execution\n"
-  "   -init filename       read/process named file\n"
+  "   -init FILENAME       read/process named file\n"
   "   -[no]header          turn headers on or off\n"
+#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
+  "   -heap SIZE           Size of heap for memsys3 or memsys5\n"
+#endif
   "   -help                show this message\n"
   "   -html                set output mode to HTML\n"
   "   -interactive         force interactive I/O\n"
@@ -2837,8 +2840,8 @@ static const char zOptions[] =
 #ifdef SQLITE_ENABLE_MULTIPLEX
   "   -multiplex           enable the multiplexor VFS\n"
 #endif
-  "   -nullvalue 'text'    set text string for NULL values\n"
-  "   -separator 'x'       set output field separator (|)\n"
+  "   -nullvalue TEXT      set text string for NULL values. Default ''\n"
+  "   -separator SEP       set output field separator. Default: '|'\n"
   "   -stats               print memory stats before each finalize\n"
   "   -version             show SQLite version\n"
   "   -vfs NAME            use NAME as the default VFS\n"
@@ -2874,6 +2877,19 @@ static void main_init(struct callback_data *data) {
   sqlite3_config(SQLITE_CONFIG_SINGLETHREAD);
 }
 
+/*
+** Get the argument to an --option.  Throw an error and die if no argument
+** is available.
+*/
+static char *cmdline_option_value(int argc, char **argv, int i){
+  if( i==argc ){
+    fprintf(stderr, "%s: Error: missing argument to %s\n",
+            argv[0], argv[argc-1]);
+    exit(1);
+  }
+  return argv[i];
+}
+
 int main(int argc, char **argv){
   char *zErrMsg = 0;
   struct callback_data data;
@@ -2903,24 +2919,35 @@ int main(int argc, char **argv){
   ** the size of the alternative malloc heap,
   ** and the first command to execute.
   */
-  for(i=1; i<argc-1; i++){
+  for(i=1; i<argc; i++){
     char *z;
-    if( argv[i][0]!='-' ) break;
     z = argv[i];
+    if( z[0]!='-' ){
+      if( data.zDbFilename==0 ){
+        data.zDbFilename = z;
+        continue;
+      }
+      if( zFirstCmd==0 ){
+        zFirstCmd = z;
+        continue;
+      }
+      fprintf(stderr,"%s: Error: too many options: \"%s\"\n", Argv0, argv[i]);
+      fprintf(stderr,"Use -help for a list of options.\n");
+      return 1;
+    }
     if( z[1]=='-' ) z++;
     if( strcmp(z,"-separator")==0
      || strcmp(z,"-nullvalue")==0
      || strcmp(z,"-cmd")==0
     ){
-      i++;
+      (void)cmdline_option_value(argc, argv, ++i);
     }else if( strcmp(z,"-init")==0 ){
-      i++;
-      zInitFile = argv[i];
-    /* Need to check for batch mode here to so we can avoid printing
-    ** informational messages (like from process_sqliterc) before 
-    ** we do the actual processing of arguments later in a second pass.
-    */
+      zInitFile = cmdline_option_value(argc, argv, ++i);
     }else if( strcmp(z,"-batch")==0 ){
+      /* Need to check for batch mode here to so we can avoid printing
+      ** informational messages (like from process_sqliterc) before 
+      ** we do the actual processing of arguments later in a second pass.
+      */
       stdin_is_interactive = 0;
     }else if( strcmp(z,"-heap")==0 ){
 #if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
@@ -2928,7 +2955,7 @@ int main(int argc, char **argv){
       const char *zSize;
       sqlite3_int64 szHeap;
 
-      zSize = argv[++i];
+      zSize = cmdline_option_value(argc, argv, ++i);
       szHeap = atoi(zSize);
       for(j=0; (c = zSize[j])!=0; j++){
         if( c=='M' ){ szHeap *= 1000000; break; }
@@ -2955,7 +2982,7 @@ int main(int argc, char **argv){
       sqlite3_multiplex_initialize(0, 1);
 #endif
     }else if( strcmp(z,"-vfs")==0 ){
-      sqlite3_vfs *pVfs = sqlite3_vfs_find(argv[++i]);
+      sqlite3_vfs *pVfs = sqlite3_vfs_find(cmdline_option_value(argc,argv,++i));
       if( pVfs ){
         sqlite3_vfs_register(pVfs, 1);
       }else{
@@ -2964,31 +2991,15 @@ int main(int argc, char **argv){
       }
     }
   }
-  if( i<argc ){
-    data.zDbFilename = argv[i++];
-  }else{
+  if( data.zDbFilename==0 ){
 #ifndef SQLITE_OMIT_MEMORYDB
     data.zDbFilename = ":memory:";
 #else
-    data.zDbFilename = 0;
-#endif
-  }
-  if( i<argc ){
-    zFirstCmd = argv[i++];
-  }
-  if( i<argc ){
-    fprintf(stderr,"%s: Error: too many options: \"%s\"\n", Argv0, argv[i]);
-    fprintf(stderr,"Use -help for a list of options.\n");
-    return 1;
-  }
-  data.out = stdout;
-
-#ifdef SQLITE_OMIT_MEMORYDB
-  if( data.zDbFilename==0 ){
     fprintf(stderr,"%s: Error: no database filename specified\n", Argv0);
     return 1;
-  }
 #endif
+  }
+  data.out = stdout;
 
   /* Go ahead and open the database file if it already exists.  If the
   ** file does not exist, delay opening it.  This prevents empty database
@@ -3013,8 +3024,9 @@ int main(int argc, char **argv){
   ** file is processed so that the command-line arguments will override
   ** settings in the initialization file.
   */
-  for(i=1; i<argc && argv[i][0]=='-'; i++){
+  for(i=1; i<argc; i++){
     char *z = argv[i];
+    if( z[0]!='-' ) continue;
     if( z[1]=='-' ){ z++; }
     if( strcmp(z,"-init")==0 ){
       i++;
@@ -3030,25 +3042,11 @@ int main(int argc, char **argv){
       data.mode = MODE_Csv;
       memcpy(data.separator,",",2);
     }else if( strcmp(z,"-separator")==0 ){
-      i++;
-      if(i>=argc){
-        fprintf(stderr,"%s: Error: missing argument for option: %s\n",
-                        Argv0, z);
-        fprintf(stderr,"Use -help for a list of options.\n");
-        return 1;
-      }
       sqlite3_snprintf(sizeof(data.separator), data.separator,
-                       "%.*s",(int)sizeof(data.separator)-1,argv[i]);
+                       "%s",cmdline_option_value(argc,argv,++i));
     }else if( strcmp(z,"-nullvalue")==0 ){
-      i++;
-      if(i>=argc){
-        fprintf(stderr,"%s: Error: missing argument for option: %s\n",
-                        Argv0, z);
-        fprintf(stderr,"Use -help for a list of options.\n");
-        return 1;
-      }
       sqlite3_snprintf(sizeof(data.nullvalue), data.nullvalue,
-                       "%.*s",(int)sizeof(data.nullvalue)-1,argv[i]);
+                       "%s",cmdline_option_value(argc,argv,++i));
     }else if( strcmp(z,"-header")==0 ){
       data.showHeader = 1;
     }else if( strcmp(z,"-noheader")==0 ){
@@ -3082,8 +3080,7 @@ int main(int argc, char **argv){
       usage(1);
     }else if( strcmp(z,"-cmd")==0 ){
       if( i==argc-1 ) break;
-      i++;
-      z = argv[i];
+      z = cmdline_option_value(argc,argv,++i);
       if( z[0]=='.' ){
         rc = do_meta_command(z, &data);
         if( rc && bail_on_error ) return rc;
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 9a34ec5fbe..d7857e5668 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -828,7 +828,7 @@ struct sqlite3 {
   unsigned int openFlags;       /* Flags passed to sqlite3_vfs.xOpen() */
   int errCode;                  /* Most recent error code (SQLITE_*) */
   int errMask;                  /* & result codes with this before returning */
-  u8 dbOptFlags;                /* Flags to enable/disable optimizations */
+  u16 dbOptFlags;               /* Flags to enable/disable optimizations */
   u8 autoCommit;                /* The auto-commit flag. */
   u8 temp_store;                /* 1: file 2: memory 0: default */
   u8 mallocFailed;              /* True if we have seen a malloc failure */
@@ -980,7 +980,8 @@ struct sqlite3 {
 #define SQLITE_DistinctOpt    0x0020   /* DISTINCT using indexes */
 #define SQLITE_CoverIdxScan   0x0040   /* Covering index scans */
 #define SQLITE_OrderByIdxJoin 0x0080   /* ORDER BY of joins via index */
-#define SQLITE_AllOpts        0x00ff   /* All optimizations */
+#define SQLITE_SubqCoroutine  0x0100   /* Evaluate subqueries as coroutines */
+#define SQLITE_AllOpts        0xffff   /* All optimizations */
 
 /*
 ** Macros for testing whether or not optimizations are enabled or disabled.
@@ -1886,8 +1887,9 @@ struct SrcList {
     int addrFillSub;  /* Address of subroutine to manifest a subquery */
     int regReturn;    /* Register holding return address of addrFillSub */
     u8 jointype;      /* Type of join between this able and the previous */
-    u8 notIndexed;    /* True if there is a NOT INDEXED clause */
-    u8 isCorrelated;  /* True if sub-query is correlated */
+    unsigned notIndexed :1;    /* True if there is a NOT INDEXED clause */
+    unsigned isCorrelated :1;  /* True if sub-query is correlated */
+    unsigned viaCoroutine :1;  /* Implemented as a co-routine */
 #ifndef SQLITE_OMIT_EXPLAIN
     u8 iSelectId;     /* If pSelect!=0, the id of the sub-select in EQP */
 #endif
@@ -2111,14 +2113,15 @@ struct Select {
 ** Allowed values for Select.selFlags.  The "SF" prefix stands for
 ** "Select Flag".
 */
-#define SF_Distinct        0x01  /* Output should be DISTINCT */
-#define SF_Resolved        0x02  /* Identifiers have been resolved */
-#define SF_Aggregate       0x04  /* Contains aggregate functions */
-#define SF_UsesEphemeral   0x08  /* Uses the OpenEphemeral opcode */
-#define SF_Expanded        0x10  /* sqlite3SelectExpand() called on this */
-#define SF_HasTypeInfo     0x20  /* FROM subqueries have Table metadata */
-#define SF_UseSorter       0x40  /* Sort using a sorter */
-#define SF_Values          0x80  /* Synthesized from VALUES clause */
+#define SF_Distinct        0x0001  /* Output should be DISTINCT */
+#define SF_Resolved        0x0002  /* Identifiers have been resolved */
+#define SF_Aggregate       0x0004  /* Contains aggregate functions */
+#define SF_UsesEphemeral   0x0008  /* Uses the OpenEphemeral opcode */
+#define SF_Expanded        0x0010  /* sqlite3SelectExpand() called on this */
+#define SF_HasTypeInfo     0x0020  /* FROM subqueries have Table metadata */
+#define SF_UseSorter       0x0040  /* Sort using a sorter */
+#define SF_Values          0x0080  /* Synthesized from VALUES clause */
+#define SF_Materialize     0x0100  /* Force materialization of views */
 
 
 /*
diff --git a/src/status.c b/src/status.c
index 04b7656afe..9b0df8001c 100644
--- a/src/status.c
+++ b/src/status.c
@@ -208,7 +208,7 @@ int sqlite3_db_status(
 
       db->pnBytesFreed = &nByte;
       for(pVdbe=db->pVdbe; pVdbe; pVdbe=pVdbe->pNext){
-        sqlite3VdbeDeleteObject(db, pVdbe);
+        sqlite3VdbeClearObject(db, pVdbe);
       }
       db->pnBytesFreed = 0;
 
diff --git a/src/test6.c b/src/test6.c
index bae6b65dc2..f511be9def 100644
--- a/src/test6.c
+++ b/src/test6.c
@@ -312,8 +312,8 @@ static int writeListSync(CrashFile *pFile, int isCrash){
         assert(pWrite->zBuf);
 
 #ifdef TRACE_CRASHTEST
-        printf("Trashing %d sectors @ sector %d (%s)\n", 
-            1+iLast-iFirst, iFirst, pWrite->pFile->zName
+        printf("Trashing %d sectors @ %lld (sector %d) (%s)\n", 
+            1+iLast-iFirst, pWrite->iOffset, iFirst, pWrite->pFile->zName
         );
 #endif
 
@@ -628,18 +628,19 @@ static int cfOpen(
       ** to read data from the 512-byte locking region of a file opened
       ** with the SQLITE_OPEN_MAIN_DB flag. This region of a database file
       ** never contains valid data anyhow. So avoid doing such a read here.
+      **
+      ** UPDATE: It also contains an assert() verifying that each call
+      ** to the xRead() method reads less than 128KB of data.
       */
       const int isDb = (flags&SQLITE_OPEN_MAIN_DB);
-      i64 iChunk = pWrapper->iSize;
-      if( iChunk>PENDING_BYTE && isDb ){
-        iChunk = PENDING_BYTE;
-      }
+      i64 iOff;
+
       memset(pWrapper->zData, 0, pWrapper->nData);
-      rc = sqlite3OsRead(pReal, pWrapper->zData, (int)iChunk, 0); 
-      if( SQLITE_OK==rc && pWrapper->iSize>(PENDING_BYTE+512) && isDb ){
-        i64 iOff = PENDING_BYTE+512;
-        iChunk = pWrapper->iSize - iOff;
-        rc = sqlite3OsRead(pReal, &pWrapper->zData[iOff], (int)iChunk, iOff);
+      for(iOff=0; iOff<pWrapper->iSize; iOff += 512){
+        int nRead = pWrapper->iSize - (int)iOff;
+        if( nRead>512 ) nRead = 512;
+        if( isDb && iOff==PENDING_BYTE ) continue;
+        rc = sqlite3OsRead(pReal, &pWrapper->zData[iOff], nRead, iOff);
       }
     }else{
       rc = SQLITE_NOMEM;
diff --git a/src/test_intarray.h b/src/test_intarray.h
index e994367c09..691337d1ae 100644
--- a/src/test_intarray.h
+++ b/src/test_intarray.h
@@ -76,6 +76,13 @@
 */
 #include "sqlite3.h"
 
+/*
+** Make sure we can call this stuff from C++.
+*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
 ** An sqlite3_intarray is an abstract type to stores an instance of
 ** an integer array.
@@ -112,3 +119,7 @@ int sqlite3_intarray_bind(
   sqlite3_int64 *aElements,      /* Content of the intarray */
   void (*xFree)(void*)           /* How to dispose of the intarray when done */
 );
+
+#ifdef __cplusplus
+}  /* End of the 'extern "C"' block */
+#endif
diff --git a/src/test_multiplex.h b/src/test_multiplex.h
index ec1ba9bb21..b7e1afea5f 100644
--- a/src/test_multiplex.h
+++ b/src/test_multiplex.h
@@ -46,6 +46,10 @@
 #define MULTIPLEX_CTRL_SET_CHUNK_SIZE  214015
 #define MULTIPLEX_CTRL_SET_MAX_CHUNKS  214016
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
 ** CAPI: Initialize the multiplex VFS shim - sqlite3_multiplex_initialize()
 **
@@ -88,4 +92,8 @@ extern int sqlite3_multiplex_initialize(const char *zOrigVfsName, int makeDefaul
 */
 extern int sqlite3_multiplex_shutdown(void);
 
+#ifdef __cplusplus
+}  /* End of the 'extern "C"' block */
+#endif
+
 #endif
diff --git a/src/vacuum.c b/src/vacuum.c
index 401d41dfb7..7ed2478326 100644
--- a/src/vacuum.c
+++ b/src/vacuum.c
@@ -85,6 +85,7 @@ void sqlite3Vacuum(Parse *pParse){
   Vdbe *v = sqlite3GetVdbe(pParse);
   if( v ){
     sqlite3VdbeAddOp2(v, OP_Vacuum, 0, 0);
+    sqlite3VdbeUsesBtree(v, 0);
   }
   return;
 }
diff --git a/src/vdbe.c b/src/vdbe.c
index effea8530c..497564b55c 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -2247,6 +2247,11 @@ case OP_Column: {
     }
   }else if( ALWAYS(pC->pseudoTableReg>0) ){
     pReg = &aMem[pC->pseudoTableReg];
+    if( pC->multiPseudo ){
+      sqlite3VdbeMemShallowCopy(pDest, pReg+p2, MEM_Ephem);
+      Deephemeralize(pDest);
+      goto op_column_out;
+    }
     assert( pReg->flags & MEM_Blob );
     assert( memIsValid(pReg) );
     payloadSize = pReg->n;
@@ -3328,12 +3333,13 @@ case OP_SorterOpen: {
   break;
 }
 
-/* Opcode: OpenPseudo P1 P2 P3 * *
+/* Opcode: OpenPseudo P1 P2 P3 * P5
 **
 ** Open a new cursor that points to a fake table that contains a single
 ** row of data.  The content of that one row in the content of memory
-** register P2.  In other words, cursor P1 becomes an alias for the 
-** MEM_Blob content contained in register P2.
+** register P2 when P5==0.  In other words, cursor P1 becomes an alias for the 
+** MEM_Blob content contained in register P2.  When P5==1, then the
+** row is represented by P3 consecutive registers beginning with P2.
 **
 ** A pseudo-table created by this opcode is used to hold a single
 ** row output from the sorter so that the row can be decomposed into
@@ -3353,6 +3359,7 @@ case OP_OpenPseudo: {
   pCx->pseudoTableReg = pOp->p2;
   pCx->isTable = 1;
   pCx->isIndex = 0;
+  pCx->multiPseudo = pOp->p5;
   break;
 }
 
@@ -4359,7 +4366,7 @@ case OP_Rowid: {                 /* out2-prerelease */
   assert( pOp->p1>=0 && pOp->p1<p->nCursor );
   pC = p->apCsr[pOp->p1];
   assert( pC!=0 );
-  assert( pC->pseudoTableReg==0 );
+  assert( pC->pseudoTableReg==0 || pC->nullRow );
   if( pC->nullRow ){
     pOut->flags = MEM_Null;
     break;
diff --git a/src/vdbe.h b/src/vdbe.h
index d62879e292..50ab1d30e7 100644
--- a/src/vdbe.h
+++ b/src/vdbe.h
@@ -190,7 +190,7 @@ VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
 int sqlite3VdbeMakeLabel(Vdbe*);
 void sqlite3VdbeRunOnlyOnce(Vdbe*);
 void sqlite3VdbeDelete(Vdbe*);
-void sqlite3VdbeDeleteObject(sqlite3*,Vdbe*);
+void sqlite3VdbeClearObject(sqlite3*,Vdbe*);
 void sqlite3VdbeMakeReady(Vdbe*,Parse*);
 int sqlite3VdbeFinalize(Vdbe*);
 void sqlite3VdbeResolveLabel(Vdbe*, int);
diff --git a/src/vdbeInt.h b/src/vdbeInt.h
index 5b42d394ef..bdae034fc0 100644
--- a/src/vdbeInt.h
+++ b/src/vdbeInt.h
@@ -63,6 +63,7 @@ struct VdbeCursor {
   Bool isIndex;         /* True if an index containing keys only - no data */
   Bool isOrdered;       /* True if the underlying table is BTREE_UNORDERED */
   Bool isSorter;        /* True if a new-style sorter */
+  Bool multiPseudo;     /* Multi-register pseudo-cursor */
   sqlite3_vtab_cursor *pVtabCursor;  /* The cursor for a virtual table */
   const sqlite3_module *pModule;     /* Module for cursor pVtabCursor */
   i64 seqCount;         /* Sequence counter */
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index c10e26a7f2..c37a0c5664 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -2435,12 +2435,14 @@ void sqlite3VdbeDeleteAuxData(VdbeFunc *pVdbeFunc, int mask){
 }
 
 /*
-** Free all memory associated with the Vdbe passed as the second argument.
+** Free all memory associated with the Vdbe passed as the second argument,
+** except for object itself, which is preserved.
+**
 ** The difference between this function and sqlite3VdbeDelete() is that
 ** VdbeDelete() also unlinks the Vdbe from the list of VMs associated with
-** the database connection.
+** the database connection and frees the object itself.
 */
-void sqlite3VdbeDeleteObject(sqlite3 *db, Vdbe *p){
+void sqlite3VdbeClearObject(sqlite3 *db, Vdbe *p){
   SubProgram *pSub, *pNext;
   int i;
   assert( p->db==0 || p->db==db );
@@ -2461,7 +2463,6 @@ void sqlite3VdbeDeleteObject(sqlite3 *db, Vdbe *p){
   sqlite3DbFree(db, p->zExplain);
   sqlite3DbFree(db, p->pExplain);
 #endif
-  sqlite3DbFree(db, p);
 }
 
 /*
@@ -2473,6 +2474,7 @@ void sqlite3VdbeDelete(Vdbe *p){
   if( NEVER(p==0) ) return;
   db = p->db;
   assert( sqlite3_mutex_held(db->mutex) );
+  sqlite3VdbeClearObject(db, p);
   if( p->pPrev ){
     p->pPrev->pNext = p->pNext;
   }else{
@@ -2484,7 +2486,7 @@ void sqlite3VdbeDelete(Vdbe *p){
   }
   p->magic = VDBE_MAGIC_DEAD;
   p->db = 0;
-  sqlite3VdbeDeleteObject(db, p);
+  sqlite3DbFree(db, p);
 }
 
 /*
diff --git a/src/vdbesort.c b/src/vdbesort.c
index ba1e9f0f23..d51bbf54a3 100644
--- a/src/vdbesort.c
+++ b/src/vdbesort.c
@@ -195,8 +195,11 @@ static int vdbeSorterIterRead(
     int rc;                       /* sqlite3OsRead() return code */
 
     /* Determine how many bytes of data to read. */
-    nRead = (int)(p->iEof - p->iReadOff);
-    if( nRead>p->nBuffer ) nRead = p->nBuffer;
+    if( (p->iEof - p->iReadOff) > (i64)p->nBuffer ){
+      nRead = p->nBuffer;
+    }else{
+      nRead = (int)(p->iEof - p->iReadOff);
+    }
     assert( nRead>0 );
 
     /* Read data from the file. Return early if an error occurs. */
diff --git a/src/vtab.c b/src/vtab.c
index 39fbacacbc..958202c31e 100644
--- a/src/vtab.c
+++ b/src/vtab.c
@@ -495,7 +495,6 @@ static int vtabCallConstructor(
   pVTable->db = db;
   pVTable->pMod = pMod;
 
-  assert( pTab->azModuleArg[1]==0 );
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
   pTab->azModuleArg[1] = db->aDb[iDb].zName;
 
@@ -509,7 +508,6 @@ static int vtabCallConstructor(
   rc = xConstruct(db, pMod->pAux, nArg, azArg, &pVTable->pVtab, &zErr);
   db->pVtabCtx = pPriorCtx;
   if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
-  pTab->azModuleArg[1] = 0;
 
   if( SQLITE_OK!=rc ){
     if( zErr==0 ){
diff --git a/src/where.c b/src/where.c
index b7663386ac..38f6f1436f 100644
--- a/src/where.c
+++ b/src/where.c
@@ -1815,10 +1815,16 @@ static void bestAutomaticIndex(WhereBestIdx *p){
     /* Automatic indices are disabled at run-time */
     return;
   }
-  if( (p->cost.plan.wsFlags & WHERE_NOT_FULLSCAN)!=0 ){
+  if( (p->cost.plan.wsFlags & WHERE_NOT_FULLSCAN)!=0
+   && (p->cost.plan.wsFlags & WHERE_COVER_SCAN)==0
+  ){
     /* We already have some kind of index in use for this query. */
     return;
   }
+  if( pSrc->viaCoroutine ){
+    /* Cannot index a co-routine */
+    return;
+  }
   if( pSrc->notIndexed ){
     /* The NOT INDEXED clause appears in the SQL. */
     return;
@@ -2996,7 +3002,7 @@ static int isSortingIndex(
 ** SQLITE_BIG_DBL. If a plan is found that uses the named index, 
 ** then the cost is calculated in the usual way.
 **
-** If a NOT INDEXED clause (pSrc->notIndexed!=0) was attached to the table 
+** If a NOT INDEXED clause was attached to the table 
 ** in the SELECT statement, then no indexes are considered. However, the 
 ** selected plan may still take advantage of the built-in rowid primary key
 ** index.
@@ -4024,6 +4030,16 @@ static Bitmask codeOneLoopStart(
     VdbeComment((v, "init LEFT JOIN no-match flag"));
   }
 
+  /* Special case of a FROM clause subquery implemented as a co-routine */
+  if( pTabItem->viaCoroutine ){
+    int regYield = pTabItem->regReturn;
+    sqlite3VdbeAddOp2(v, OP_Integer, pTabItem->addrFillSub-1, regYield);
+    pLevel->p2 =  sqlite3VdbeAddOp1(v, OP_Yield, regYield);
+    VdbeComment((v, "next row of co-routine %s", pTabItem->pTab->zName));
+    sqlite3VdbeAddOp2(v, OP_If, regYield+1, addrBrk);
+    pLevel->op = OP_Goto;
+  }else
+
 #ifndef SQLITE_OMIT_VIRTUALTABLE
   if(  (pLevel->plan.wsFlags & WHERE_VIRTUALTABLE)!=0 ){
     /* Case 0:  The table is a virtual-table.  Use the VFilter and VNext
diff --git a/test/crash7.test b/test/crash7.test
index 4554a2ac58..482999cbfd 100644
--- a/test/crash7.test
+++ b/test/crash7.test
@@ -13,6 +13,7 @@
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
+set testprefix crash7
 
 ifcapable !crashtest {
   finish_test
@@ -79,4 +80,37 @@ foreach f [list test.db test.db-journal] {
   } 
 }
 
+db close
+forcedelete test.db
+sqlite3 db test.db
+do_execsql_test 2.0 {
+  CREATE TABLE t1(a, b, UNIQUE(a, b));
+  INSERT INTO t1 VALUES(randomblob(100), randomblob(100));
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM t1;
+  DELETE FROM t1 WHERE rowid%2;
+}
+db_save_and_close
+
+for {set i 0} {$i < 20} {incr i} {
+  db_restore_and_reopen
+  do_test 2.[expr $i+1].1 {
+    crashsql -file test.db -seed $i {VACUUM}
+  } {1 {child process exited abnormally}}
+  do_execsql_test 2.[expr $i+1].2 { PRAGMA integrity_check } {ok}
+}
+
+
 finish_test
diff --git a/test/fts3matchinfo.test b/test/fts3matchinfo.test
index 924db9c8a1..3998c9a40c 100644
--- a/test/fts3matchinfo.test
+++ b/test/fts3matchinfo.test
@@ -407,5 +407,24 @@ do_catchsql_test 8.5.3.2 {
   SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*'
 } {1 {database disk image is malformed}}
 
+#-------------------------------------------------------------------------
+do_execsql_test 8.1 {
+  CREATE VIRTUAL TABLE t12 USING fts4;
+  INSERT INTO t12 VALUES('a b c d');
+  SELECT mit(matchinfo(t12, 'x')) FROM t12 WHERE t12 MATCH 'a NEAR/1 d OR a';
+} {{0 0 0 0 0 0 1 1 1}}
+do_execsql_test 8.2 {
+  INSERT INTO t12 VALUES('a d c d');
+  SELECT mit(matchinfo(t12, 'x')) FROM t12 WHERE t12 MATCH 'a NEAR/1 d OR a';
+} {
+  {0 1 1 0 1 1 1 2 2} {1 1 1 1 1 1 1 2 2}
+}
+do_execsql_test 8.3 {
+  INSERT INTO t12 VALUES('a d d a');
+  SELECT mit(matchinfo(t12, 'x')) FROM t12 WHERE t12 MATCH 'a NEAR/1 d OR a';
+} {
+  {0 3 2 0 3 2 1 4 3} {1 3 2 1 3 2 1 4 3} {2 3 2 2 3 2 2 4 3}
+}
+
 finish_test
 
diff --git a/test/minmax.test b/test/minmax.test
index 599024508c..3621375ee7 100644
--- a/test/minmax.test
+++ b/test/minmax.test
@@ -299,7 +299,7 @@ ifcapable {compound && subquery} {
         SELECT max(rowid) FROM t4 UNION SELECT max(rowid) FROM t5
       )
     }
-  } {1}
+  } {{}}
   do_test minmax-9.2 {
     execsql {
       SELECT max(rowid) FROM (
diff --git a/test/minmax2.test b/test/minmax2.test
index 2f504d4999..da8fec30ce 100644
--- a/test/minmax2.test
+++ b/test/minmax2.test
@@ -289,7 +289,7 @@ ifcapable {compound && subquery} {
         SELECT max(rowid) FROM t4 UNION SELECT max(rowid) FROM t5
       )
     }
-  } {1}
+  } {{}}
   do_test minmax2-9.2 {
     execsql {
       SELECT max(rowid) FROM (
diff --git a/test/shell1.test b/test/shell1.test
index 5c49d90532..e826b95e44 100644
--- a/test/shell1.test
+++ b/test/shell1.test
@@ -149,7 +149,7 @@ do_test shell1-1.14.3 {
   set res [catchcmd "-separator" ""]
   set rc [lindex $res 0]
   list $rc \
-       [regexp {Error: missing argument for option: -separator} $res]
+       [regexp {Error: missing argument to -separator} $res]
 } {1 1}
 
 # -stats               print memory stats before each finalize
@@ -168,7 +168,7 @@ do_test shell1-1.15.3 {
   set res [catchcmd "-nullvalue" ""]
   set rc [lindex $res 0]
   list $rc \
-       [regexp {Error: missing argument for option: -nullvalue} $res]
+       [regexp {Error: missing argument to -nullvalue} $res]
 } {1 1}
 
 # -version             show SQLite version
diff --git a/test/tkt-31338dca7e.test b/test/tkt-31338dca7e.test
index 9423c684e9..41dd9d3bf8 100644
--- a/test/tkt-31338dca7e.test
+++ b/test/tkt-31338dca7e.test
@@ -91,7 +91,7 @@ do_test tkt-31338-3.1 {
     INSERT INTO t3 VALUES(4);
     CREATE TABLE t4(h);
     INSERT INTO t4 VALUES(5);
-    
+
     SELECT * FROM t3 LEFT JOIN t1 ON d=g LEFT JOIN t4 ON c=h
      WHERE (a=1 AND h=4)
          OR (b IN (
diff --git a/test/tkt3527.test b/test/tkt3527.test
index d9b1dadfdc..da3d05ac46 100644
--- a/test/tkt3527.test
+++ b/test/tkt3527.test
@@ -52,8 +52,8 @@ do_test tkt3527-1.1 {
     INSERT INTO Element VALUES(5,'Elem5');
     INSERT INTO ElemOr Values(3,4);
     INSERT INTO ElemOr Values(3,5);
-    INSERT INTO ElemAnd VALUES(1,3,1,1,1);
-    INSERT INTO ElemAnd VALUES(1,2,1,1,1);
+    INSERT INTO ElemAnd VALUES(1,3,'a','b','c');
+    INSERT INTO ElemAnd VALUES(1,2,'x','y','z');
     
     CREATE VIEW ElemView1 AS
     SELECT
@@ -112,12 +112,12 @@ do_test tkt3527-1.1 {
  
     SELECT * FROM ElemView1;
   }
-} {1 1 Elem1 2 1 1 1 0 0 1 1 Elem1 3 1 1 1 0 0 3 3 Elem3 4 {} {} {} 0 1 3 3 Elem3 5 {} {} {} 0 1}
+} {1 1 Elem1 2 x y z 0 0 1 1 Elem1 3 a b c 0 0 3 3 Elem3 4 {} {} {} 0 1 3 3 Elem3 5 {} {} {} 0 1}
    
 do_test tkt3527-1.2 {
   db eval {
     SELECT * FROM ElemView2;
   }
-} {1 1 Elem1 2 1 1 1 0 0 1 1 Elem1 3 1 1 1 0 0 1.3 3 Elem3 4 {} {} {} 1 1 1.3 3 Elem3 5 {} {} {} 1 1 3 3 Elem3 4 {} {} {} 0 1 3 3 Elem3 5 {} {} {} 0 1}
+} {1 1 Elem1 2 x y z 0 0 1 1 Elem1 3 a b c 0 0 1.3 3 Elem3 4 {} {} {} 1 1 1.3 3 Elem3 5 {} {} {} 1 1 3 3 Elem3 4 {} {} {} 0 1 3 3 Elem3 5 {} {} {} 0 1}
 
 finish_test
diff --git a/tool/build-all-msvc.bat b/tool/build-all-msvc.bat
index 989a2af795..758036fb75 100755
--- a/tool/build-all-msvc.bat
+++ b/tool/build-all-msvc.bat
@@ -6,6 +6,49 @@
 :: Multi-Platform Build Tool for MSVC
 ::
 
+REM
+REM This batch script is used to build the SQLite DLL for multiple platforms
+REM and configurations using MSVC.  The built SQLite DLLs, their associated
+REM import libraries, and optionally their symbols files, are placed within
+REM the directory specified on the command line, in sub-directories named for
+REM their respective platforms and configurations.  This batch script must be
+REM run from inside a Visual Studio Command Prompt for the desired version of
+REM Visual Studio ^(the initial platform configured for the command prompt does
+REM not really matter^).  Exactly one command line argument is required, the
+REM name of an existing directory to be used as the final destination directory
+REM for the generated output files, which will be placed in sub-directories
+REM created therein.  Ideally, the directory specified should be empty.
+REM
+REM Example:
+REM
+REM                        CD /D C:\dev\sqlite\core
+REM                        tool\build-all-msvc.bat C:\Temp
+REM
+REM In the example above, "C:\dev\sqlite\core" represents the root of the
+REM source tree for SQLite and "C:\Temp" represents the final destination
+REM directory for the generated output files.
+REM
+REM There are several environment variables that may be set to modify the
+REM behavior of this batch script and its associated Makefile.  The list of
+REM platforms to build may be overriden by using the PLATFORMS environment
+REM variable, which should contain a list of platforms ^(e.g. x86 x86_amd64
+REM x86_arm^).  All platforms must be supported by the version of Visual Studio
+REM being used.  The list of configurations to build may be overridden by
+REM setting the CONFIGURATIONS environment variable, which should contain a
+REM list of configurations to build ^(e.g. Debug Retail^).  Neither of these
+REM variable values may contain any double quotes, surrounding or embedded.
+REM Finally, the NCRTLIBPATH and NSDKLIBPATH environment variables may be set
+REM to specify the location of the CRT and SDK, respectively, needed to compile
+REM executables native to the architecture of the build machine during any
+REM cross-compilation that may be necessary, depending on the platforms to be
+REM built.  These values in these two variables should be surrounded by double
+REM quotes if they contain spaces.
+REM
+REM Please note that the SQLite build process performed by the Makefile
+REM associated with this batch script requires both Gawk ^(gawk.exe^) and Tcl
+REM 8.5 ^(tclsh85.exe^) to be present in a directory contained in the PATH
+REM environment variable unless a pre-existing amalgamation file is used.
+REM
 SETLOCAL
 
 REM SET __ECHO=ECHO
@@ -93,18 +136,36 @@ IF NOT DEFINED PLATFORMS (
 
 %_VECHO% Platforms = '%PLATFORMS%'
 
+REM
+REM NOTE: If the list of configurations is not already set, use the default
+REM       list.
+REM
+IF NOT DEFINED CONFIGURATIONS (
+  SET CONFIGURATIONS=Debug Retail
+)
+
+%_VECHO% Configurations = '%CONFIGURATIONS%'
+
 REM
 REM NOTE: Setup environment variables to translate between the MSVC platform
 REM       names and the names to be used for the platform-specific binary
 REM       directories.
 REM
+SET amd64_NAME=x64
+SET arm_NAME=ARM
+SET x64_NAME=x64
 SET x86_NAME=x86
 SET x86_amd64_NAME=x64
 SET x86_arm_NAME=ARM
+SET x86_x64_NAME=x64
 
+%_VECHO% amd64_Name = '%amd64_NAME%'
+%_VECHO% arm_Name = '%arm_NAME%'
+%_VECHO% x64_Name = '%x64_NAME%'
 %_VECHO% x86_Name = '%x86_NAME%'
 %_VECHO% x86_amd64_Name = '%x86_amd64_NAME%'
 %_VECHO% x86_arm_Name = '%x86_arm_NAME%'
+%_VECHO% x86_x64_Name = '%x86_x64_NAME%'
 
 REM
 REM NOTE: Check for the external tools needed during the build process ^(i.e.
@@ -115,6 +176,24 @@ FOR %%T IN (gawk.exe tclsh85.exe) DO (
   SET %%T_PATH=%%~dp$PATH:T
 )
 
+REM
+REM NOTE: The Gawk executable "gawk.exe" is required during the SQLite build
+REM       process unless a pre-existing amalgamation file is used.
+REM
+IF NOT DEFINED gawk.exe_PATH (
+  ECHO The Gawk executable "gawk.exe" is required to be in the PATH.
+  GOTO errors
+)
+
+REM
+REM NOTE: The Tcl 8.5 executable "tclsh85.exe" is required during the SQLite
+REM       build process unless a pre-existing amalgamation file is used.
+REM
+IF NOT DEFINED tclsh85.exe_PATH (
+  ECHO The Tcl 8.5 executable "tclsh85.exe" is required to be in the PATH.
+  GOTO errors
+)
+
 REM
 REM NOTE: Set the TOOLPATH variable to contain all the directories where the
 REM       external tools were found in the search above.
@@ -128,11 +207,30 @@ REM NOTE: Check for MSVC 2012 because the Windows SDK directory handling is
 REM       slightly different for that version.
 REM
 IF "%VisualStudioVersion%" == "11.0" (
-  SET SET_NSDKLIBPATH=1
+  REM
+  REM NOTE: If the Windows SDK library path has already been set, do not set
+  REM       it to something else later on.
+  REM
+  IF NOT DEFINED NSDKLIBPATH (
+    SET SET_NSDKLIBPATH=1
+  )
 ) ELSE (
   CALL :fn_UnsetVariable SET_NSDKLIBPATH
 )
 
+REM
+REM NOTE: Check if this is the Windows Phone SDK.  If so, a different batch
+REM       file is necessary to setup the build environment.  Since the variable
+REM       values involved here may contain parenthesis, using GOTO instead of
+REM       an IF block is required.
+REM
+IF DEFINED WindowsPhoneKitDir GOTO set_vcvarsall_phone
+SET VCVARSALL=%VCINSTALLDIR%\vcvarsall.bat
+GOTO set_vcvarsall_done
+:set_vcvarsall_phone
+SET VCVARSALL=%VCINSTALLDIR%\WPSDK\WP80\vcvarsphoneall.bat
+:set_vcvarsall_done
+
 REM
 REM NOTE: This is the outer loop.  There should be exactly one iteration per
 REM       platform.
@@ -173,6 +271,7 @@ FOR %%P IN (%PLATFORMS%) DO (
     CALL :fn_UnsetVariable Platform
     REM CALL :fn_UnsetVariable VCINSTALLDIR
     CALL :fn_UnsetVariable VSINSTALLDIR
+    CALL :fn_UnsetVariable WindowsPhoneKitDir
     CALL :fn_UnsetVariable WindowsSdkDir
     CALL :fn_UnsetVariable WindowsSdkDir_35
     CALL :fn_UnsetVariable WindowsSdkDir_old
@@ -182,7 +281,7 @@ FOR %%P IN (%PLATFORMS%) DO (
     REM
     SET PATH=%TOOLPATH%;%SystemRoot%\System32;%SystemRoot%
 
-    FOR %%B IN (Debug Retail) DO (
+    FOR %%B IN (%CONFIGURATIONS%) DO (
       REM
       REM NOTE: When preparing the debug build, set the DEBUG and MEMDEBUG
       REM       environment variables to be picked up by the MSVC makefile
@@ -215,10 +314,10 @@ FOR %%P IN (%PLATFORMS%) DO (
         REM
         REM NOTE: Attempt to setup the MSVC environment for this platform.
         REM
-        %__ECHO3% CALL "%VCINSTALLDIR%\vcvarsall.bat" %%P
+        %__ECHO3% CALL "%VCVARSALL%" %%P
 
         IF ERRORLEVEL 1 (
-          ECHO Failed to call "%VCINSTALLDIR%\vcvarsall.bat" for platform %%P.
+          ECHO Failed to call "%VCVARSALL%" for platform %%P.
           GOTO errors
         )
 
@@ -228,10 +327,12 @@ FOR %%P IN (%PLATFORMS%) DO (
         REM       as current versions of their official batch file do not set
         REM       the exit code upon failure.
         REM
-        IF NOT DEFINED __ECHO (
-          IF NOT DEFINED WindowsSdkDir (
-            ECHO Cannot build, Windows SDK not found for platform %%P.
-            GOTO errors
+        IF NOT DEFINED __ECHO3 (
+          IF NOT DEFINED WindowsPhoneKitDir (
+            IF NOT DEFINED WindowsSdkDir (
+              ECHO Cannot build, Windows SDK not found for platform %%P.
+              GOTO errors
+            )
           )
         )
 
@@ -245,8 +346,13 @@ FOR %%P IN (%PLATFORMS%) DO (
         REM       file used to setup the MSVC environment.
         REM
         IF DEFINED SET_NSDKLIBPATH (
-          CALL :fn_CopyVariable WindowsSdkDir NSDKLIBPATH
-          CALL :fn_AppendVariable NSDKLIBPATH \lib\win8\um\x86
+          IF DEFINED WindowsPhoneKitDir (
+            CALL :fn_CopyVariable WindowsPhoneKitDir NSDKLIBPATH
+            CALL :fn_AppendVariable NSDKLIBPATH \lib\x86
+          ) ELSE IF DEFINED WindowsSdkDir (
+            CALL :fn_CopyVariable WindowsSdkDir NSDKLIBPATH
+            CALL :fn_AppendVariable NSDKLIBPATH \lib\win8\um\x86
+          )
         )
 
         REM
diff --git a/tool/mkvsix.tcl b/tool/mkvsix.tcl
index 6a84758cc8..e9f1f818da 100644
--- a/tool/mkvsix.tcl
+++ b/tool/mkvsix.tcl
@@ -2,7 +2,95 @@
 #
 # This script is used to generate a VSIX (Visual Studio Extension) file for
 # SQLite usable by Visual Studio.
-
+#
+# PREREQUISITES
+#
+# 1. Tcl 8.4 and later are supported, earlier versions have not been tested.
+#
+# 2. The "sqlite3.h" file is assumed to exist in the parent directory of the
+#    directory containing this script.  The [optional] second command line
+#    argument to this script may be used to specify an alternate location.
+#    This script also assumes that the "sqlite3.h" file corresponds with the
+#    version of the binaries to be packaged.  This assumption is not verified
+#    by this script.
+#
+# 3. The temporary directory specified in the TEMP or TMP environment variables
+#    must refer to an existing directory writable by the current user.
+#
+# 4. The "zip" and "unzip" command line tools must be located either in a
+#    directory contained in the PATH environment variable or specified as the
+#    exact file names to execute in the "ZipTool" and "UnZipTool" environment
+#    variables, respectively.
+#
+# 5. The template VSIX file (which is basically a zip file) must be located in
+#    a "win" directory inside the directory containing this script.  It should
+#    not contain any executable binaries.  It should only contain dynamic
+#    textual content files to be processed using [subst] and/or static content
+#    files to be copied verbatim.
+#
+# 6. The executable and other compiled binary files to be packaged into the
+#    final VSIX file (e.g. DLLs, LIBs, and PDBs) must be located in a single
+#    directory tree.  The top-level directory of the tree must be specified as
+#    the first command line argument to this script.  The second level
+#    sub-directory names must match those of the build configuration (e.g.
+#    "Debug" or "Retail").  The third level sub-directory names must match
+#    those of the platform (e.g. "x86", "x64", and "ARM").  For example, the
+#    binary files to be packaged would need to be organized as follows when
+#    packaging the "Debug" and "Retail" build configurations for the "x86" and
+#    "x64" platforms (in this example, "C:\temp" is the top-level directory as
+#    specified in the first command line argument):
+#
+#                         C:\Temp\Debug\x86\sqlite3.lib
+#                         C:\Temp\Debug\x86\sqlite3.dll
+#                         C:\Temp\Debug\x86\sqlite3.pdb
+#                         C:\Temp\Debug\x64\sqlite3.lib
+#                         C:\Temp\Debug\x64\sqlite3.dll
+#                         C:\Temp\Debug\x64\sqlite3.pdb
+#                         C:\Temp\Retail\x86\sqlite3.lib
+#                         C:\Temp\Retail\x86\sqlite3.dll
+#                         C:\Temp\Retail\x86\sqlite3.pdb
+#                         C:\Temp\Retail\x64\sqlite3.lib
+#                         C:\Temp\Retail\x64\sqlite3.dll
+#                         C:\Temp\Retail\x64\sqlite3.pdb
+#
+#    The above directory tree organization is performed automatically if the
+#    "tool\build-all-msvc.bat" batch script is used to build the binary files
+#    to be packaged.
+#
+# USAGE
+#
+# The first argument to this script is required and must be the name of the
+# top-level directory containing the directories and files organized into a
+# tree as described in item 6 of the PREREQUISITES section, above.  The second
+# argument is optional and if present must contain the name of the directory
+# containing the root of the source tree for SQLite.  The third argument is
+# optional and if present must contain the flavor the VSIX package to build.
+# Currently, the only supported package flavors are "WinRT" and "WP80".  The
+# fourth argument is optional and if present must be a string containing a list
+# of platforms to include in the VSIX package.  The format of the platform list
+# string is "platform1,platform2,platform3".  Typically, when on Windows, this
+# script is executed using commands similar to the following from a normal
+# Windows command prompt:
+#
+#                         CD /D C:\dev\sqlite\core
+#                         tclsh85 tool\mkvsix.tcl C:\Temp
+#
+# In the example above, "C:\dev\sqlite\core" represents the root of the source
+# tree for SQLite and "C:\Temp" represents the top-level directory containing
+# the executable and other compiled binary files, organized into a directory
+# tree as described in item 6 of the PREREQUISITES section, above.
+#
+# This script should work on non-Windows platforms as well, provided that all
+# the requirements listed in the PREREQUISITES section are met.
+#
+# NOTES
+#
+# The temporary directory is used as a staging area for the final VSIX file.
+# The template VSIX file is extracted, its contents processed, and then the
+# resulting files are packaged into the final VSIX file.
+#
+package require Tcl 8.4
+
 proc fail { {error ""} {usage false} } {
   if {[string length $error] > 0} then {
     puts stdout $error
@@ -11,7 +99,8 @@ proc fail { {error ""} {usage false} } {
 
   puts stdout "usage:\
 [file tail [info nameofexecutable]]\
-[file tail [info script]] <binaryDirectory> \[sourceDirectory\]"
+[file tail [info script]] <binaryDirectory> \[sourceDirectory\]\
+\[packageFlavor\] \[platformNames\]"
 
   exit 1
 }
@@ -84,21 +173,24 @@ proc writeFile { fileName data } {
 proc substFile { fileName } {
   #
   # NOTE: Performs all Tcl command, variable, and backslash substitutions in
-  #       the specified file and then re-writes the contents of that same file
+  #       the specified file and then rewrites the contents of that same file
   #       with the substituted data.
   #
   return [writeFile $fileName [uplevel 1 [list subst [readFile $fileName]]]]
 }
 
-proc replaceBuildAndPlatform { fileName buildName platformName } {
+proc replaceFileNameTokens { fileName name buildName platformName } {
   #
   # NOTE: Returns the specified file name containing the platform name instead
   #       of platform placeholder tokens.
   #
-  return [string map [list <build> $buildName <platform> $platformName] \
-      $fileName]
+  return [string map [list <build> $buildName <platform> $platformName \
+      <name> $name] $fileName]
 }
 
+#
+# NOTE: This is the entry point for this script.
+#
 set script [file normalize [info script]]
 
 if {[string length $script] == 0} then {
@@ -114,7 +206,7 @@ set rootName [file rootname [file tail $script]]
 # NOTE: Process and verify all the command line arguments.
 #
 set argc [llength $argv]
-if {$argc != 1 && $argc != 2} then {fail}
+if {$argc < 1 || $argc > 4} then {fail}
 
 set binaryDirectory [lindex $argv 0]
 
@@ -127,7 +219,7 @@ if {![file exists $binaryDirectory] || \
   fail "binary directory does not exist"
 }
 
-if {$argc == 2} then {
+if {$argc >= 2} then {
   set sourceDirectory [lindex $argv 1]
 } else {
   #
@@ -146,6 +238,47 @@ if {![file exists $sourceDirectory] || \
   fail "source directory does not exist"
 }
 
+if {$argc >= 3} then {
+  set packageFlavor [lindex $argv 2]
+} else {
+  #
+  # NOTE: Assume the package flavor is WinRT.
+  #
+  set packageFlavor WinRT
+}
+
+if {[string length $packageFlavor] == 0} then {
+  fail "invalid package flavor"
+}
+
+if {[string equal -nocase $packageFlavor WinRT]} then {
+  set shortName SQLite.WinRT
+  set displayName "SQLite for Windows Runtime"
+  set targetPlatformIdentifier Windows
+  set extraSdkPath ""
+  set extraFileListAttributes [appendArgs \
+      "\r\n    " {AppliesTo="WindowsAppContainer"} \
+      "\r\n    " {DependsOn="Microsoft.VCLibs, version=11.0"}]
+} elseif {[string equal -nocase $packageFlavor WP80]} then {
+  set shortName SQLite.WP80
+  set displayName "SQLite for Windows Phone"
+  set targetPlatformIdentifier "Windows Phone"
+  set extraSdkPath "\\..\\$targetPlatformIdentifier"
+  set extraFileListAttributes ""
+} else {
+  fail "unsupported package flavor, must be \"WinRT\" or \"WP80\""
+}
+
+if {$argc >= 4} then {
+  set platformNames [list]
+
+  foreach platformName [split [lindex $argv 3] ", "] {
+    if {[string length $platformName] > 0} then {
+      lappend platformNames $platformName
+    }
+  }
+}
+
 ###############################################################################
 
 #
@@ -169,7 +302,8 @@ if {![file exists $templateFile] || \
 }
 
 set currentDirectory [pwd]
-set outputFile [file join $currentDirectory sqlite-output.vsix]
+set outputFile [file join $currentDirectory [appendArgs sqlite- \
+    $packageFlavor -output.vsix]]
 
 if {[file exists $outputFile]} then {
   fail [appendArgs "output file \"" $outputFile "\" already exists"]
@@ -245,13 +379,41 @@ if {![regexp -line -- $pattern $data dummy version]} then {
 ###############################################################################
 
 #
-# NOTE: Setup the master file list data, including the necessary flags.
+# NOTE: Setup all the master file list data.  This includes the source file
+#       names, the destination file names, and the file processing flags.  The
+#       possible file processing flags are:
+#
+#       "buildNeutral" -- This flag indicates the file location and content do
+#                         not depend on the build configuration.
+#
+#       "platformNeutral" -- This flag indicates the file location and content
+#                            do not depend on the build platform.
+#
+#       "subst" -- This flag indicates that the file contains dynamic textual
+#                  content that needs to be processed using [subst] prior to
+#                  packaging the file into the final VSIX package.  The primary
+#                  use of this flag is to insert the name of the VSIX package,
+#                  some package flavor-specific value, or the SQLite version
+#                  into a file.
+#
+#       "noDebug" -- This flag indicates that the file should be skipped when
+#                    processing the debug build.
+#
+#       "noRetail" -- This flag indicates that the file should be skipped when
+#                     processing the retail build.
+#
+#       "move" -- This flag indicates that the file should be moved from the
+#                 source to the destination instead of being copied.
+#
+#       This file metadata may be overridden, either in whole or in part, via
+#       the user-specific customizations file.
 #
 if {![info exists fileNames(source)]} then {
-  set fileNames(source) [list "" "" "" \
-      [file join $sourceDirectory sqlite3.h] \
-      [file join $binaryDirectory <build> <platform> sqlite3.lib] \
-      [file join $binaryDirectory <build> <platform> sqlite3.dll]]
+  set fileNames(source) [list "" "" \
+    [file join $stagingDirectory DesignTime <build> <platform> sqlite3.props] \
+    [file join $sourceDirectory sqlite3.h] \
+    [file join $binaryDirectory <build> <platform> sqlite3.lib] \
+    [file join $binaryDirectory <build> <platform> sqlite3.dll]]
 
   if {![info exists no(symbols)]} then {
     lappend fileNames(source) \
@@ -261,13 +423,12 @@ if {![info exists fileNames(source)]} then {
 
 if {![info exists fileNames(destination)]} then {
   set fileNames(destination) [list \
-      [file join $stagingDirectory extension.vsixmanifest] \
-      [file join $stagingDirectory SDKManifest.xml] \
-      [file join $stagingDirectory DesignTime <build> <platform> \
-          SQLite.WinRT.props] \
-      [file join $stagingDirectory DesignTime <build> <platform> sqlite3.h] \
-      [file join $stagingDirectory DesignTime <build> <platform> sqlite3.lib] \
-      [file join $stagingDirectory Redist <build> <platform> sqlite3.dll]]
+    [file join $stagingDirectory extension.vsixmanifest] \
+    [file join $stagingDirectory SDKManifest.xml] \
+    [file join $stagingDirectory DesignTime <build> <platform> <name>.props] \
+    [file join $stagingDirectory DesignTime <build> <platform> sqlite3.h] \
+    [file join $stagingDirectory DesignTime <build> <platform> sqlite3.lib] \
+    [file join $stagingDirectory Redist <build> <platform> sqlite3.dll]]
 
   if {![info exists no(symbols)]} then {
     lappend fileNames(destination) \
@@ -275,50 +436,24 @@ if {![info exists fileNames(destination)]} then {
   }
 }
 
-if {![info exists fileNames(buildNeutral)]} then {
-  set fileNames(buildNeutral) [list 1 1 1 1 0 0]
+if {![info exists fileNames(flags)]} then {
+  set fileNames(flags) [list \
+      [list buildNeutral platformNeutral subst] \
+      [list buildNeutral platformNeutral subst] \
+      [list buildNeutral platformNeutral subst move] \
+      [list buildNeutral platformNeutral] \
+      [list] [list] [list noRetail]]
 
   if {![info exists no(symbols)]} then {
-    lappend fileNames(buildNeutral) 0
-  }
-}
-
-if {![info exists fileNames(platformNeutral)]} then {
-  set fileNames(platformNeutral) [list 1 1 1 1 0 0]
-
-  if {![info exists no(symbols)]} then {
-    lappend fileNames(platformNeutral) 0
-  }
-}
-
-if {![info exists fileNames(subst)]} then {
-  set fileNames(subst) [list 1 1 1 0 0 0]
-
-  if {![info exists no(symbols)]} then {
-    lappend fileNames(subst) 0
-  }
-}
-
-if {![info exists fileNames(noDebug)]} then {
-  set fileNames(noDebug) [list 0 0 0 0 0 0]
-
-  if {![info exists no(symbols)]} then {
-    lappend fileNames(noDebug) 0
-  }
-}
-
-if {![info exists fileNames(noRetail)]} then {
-  set fileNames(noRetail) [list 0 0 0 0 0 0]
-
-  if {![info exists no(symbols)]} then {
-    lappend fileNames(noRetail) 1
+    lappend fileNames(flags) [list noRetail]
   }
 }
 
 ###############################################################################
 
 #
-# NOTE: Setup the list of builds supported by this script.
+# NOTE: Setup the list of builds supported by this script.  These may be
+#       overridden via the user-specific customizations file.
 #
 if {![info exists buildNames]} then {
   set buildNames [list Debug Retail]
@@ -327,7 +462,9 @@ if {![info exists buildNames]} then {
 ###############################################################################
 
 #
-# NOTE: Setup the list of platforms supported by this script.
+# NOTE: Setup the list of platforms supported by this script.  These may be
+#       overridden via the command line or the user-specific customizations
+#       file.
 #
 if {![info exists platformNames]} then {
   set platformNames [list x86 x64 ARM]
@@ -341,47 +478,64 @@ if {![info exists platformNames]} then {
 file mkdir $stagingDirectory
 
 #
-# NOTE: Build the Tcl command used to extract the template package to the
-#       staging directory.
+# NOTE: Build the Tcl command used to extract the template VSIX package to
+#       the staging directory.
 #
 set extractCommand [list exec -- $unzip $templateFile -d $stagingDirectory]
 
 #
-# NOTE: Extract the template package to the staging directory.
+# NOTE: Extract the template VSIX package to the staging directory.
 #
 eval $extractCommand
 
 ###############################################################################
 
 #
-# NOTE: Process each file in the master file list.  There are actually four
-#       parallel lists that contain the source file names, destination file
-#       names, the platform-neutral flags, and the use-subst flags.  When the
-#       platform-neutral flag is non-zero, the file is not platform-specific.
-#       When the use-subst flag is non-zero, the file is considered to be a
-#       text file that may contain Tcl variable and/or command replacements,
-#       to be dynamically replaced during processing.  If the source file name
-#       is an empty string, then the destination file name will be assumed to
-#       already exist in the staging directory and will not be copied; however,
-#       dynamic replacements may still be performed on the destination file
-#       prior to the package being re-zipped.
+# NOTE: Process each file in the master file list.  There are actually three
+#       parallel lists that contain the source file names, the destination file
+#       names, and the file processing flags. If the "buildNeutral" flag is
+#       present, the file location and content do not depend on the build
+#       configuration and "CommonConfiguration" will be used in place of the
+#       build configuration name.  If the "platformNeutral" flag is present,
+#       the file location and content do not depend on the build platform and
+#       "neutral" will be used in place of the build platform name.  If the
+#       "subst" flag is present, the file is assumed to be a text file that may
+#       contain Tcl variable, command, and backslash replacements, to be
+#       dynamically replaced during processing using the Tcl [subst] command.
+#       If the "noDebug" flag is present, the file will be skipped when
+#       processing for the debug build.  If the "noRetail" flag is present, the
+#       file will be skipped when processing for the retail build.  If the
+#       "move" flag is present, the source file will be deleted after it is
+#       copied to the destination file.  If the source file name is an empty
+#       string, the destination file name will be assumed to already exist in
+#       the staging directory and will not be copied; however, Tcl variable,
+#       command, and backslash replacements may still be performed on the
+#       destination file prior to the final VSIX package being built if the
+#       "subst" flag is present.
 #
-foreach sourceFileName $fileNames(source) \
-    destinationFileName $fileNames(destination) \
-    buildNeutral $fileNames(buildNeutral) platformNeutral \
-    $fileNames(platformNeutral) useSubst $fileNames(subst) \
-    noDebug $fileNames(noDebug) noRetail $fileNames(noRetail) {
+foreach sourceFileName      $fileNames(source) \
+        destinationFileName $fileNames(destination) \
+        fileFlags           $fileNames(flags) {
+  #
+  # NOTE: Process the file flags into separate boolean variables that may be
+  #       used within the loop.
+  #
+  set isBuildNeutral [expr {[lsearch $fileFlags buildNeutral] != -1}]
+  set isPlatformNeutral [expr {[lsearch $fileFlags platformNeutral] != -1}]
+  set isMove [expr {[lsearch $fileFlags move] != -1}]
+  set useSubst [expr {[lsearch $fileFlags subst] != -1}]
+
   #
   # NOTE: If the current file is build-neutral, then only one build will
   #       be processed for it, namely "CommonConfiguration"; otherwise, each
   #       supported build will be processed for it individually.
   #
   foreach buildName \
-      [expr {$buildNeutral ? [list CommonConfiguration] : $buildNames}] {
+      [expr {$isBuildNeutral ? [list CommonConfiguration] : $buildNames}] {
     #
     # NOTE: Should the current file be skipped for this build?
     #
-    if {[info exists no${buildName}] && [set no${buildName}]} then {
+    if {[lsearch $fileFlags no${buildName}] != -1} then {
       continue
     }
 
@@ -391,12 +545,12 @@ foreach sourceFileName $fileNames(source) \
     #       supported platform will be processed for it individually.
     #
     foreach platformName \
-        [expr {$platformNeutral ? [list neutral] : $platformNames}] {
+        [expr {$isPlatformNeutral ? [list neutral] : $platformNames}] {
       #
       # NOTE: Use the actual platform name in the destination file name.
       #
-      set newDestinationFileName [replaceBuildAndPlatform \
-          $destinationFileName $buildName $platformName]
+      set newDestinationFileName [replaceFileNameTokens $destinationFileName \
+          $shortName $buildName $platformName]
 
       #
       # NOTE: Does the source file need to be copied to the destination file?
@@ -410,8 +564,18 @@ foreach sourceFileName $fileNames(source) \
         #
         # NOTE: Then, copy the source file to the destination file verbatim.
         #
-        file copy [replaceBuildAndPlatform $sourceFileName $buildName \
-            $platformName] $newDestinationFileName
+        set newSourceFileName [replaceFileNameTokens $sourceFileName \
+            $shortName $buildName $platformName]
+
+        file copy $newSourceFileName $newDestinationFileName
+
+        #
+        # NOTE: If this is a move instead of a copy, delete the source file
+        #       now.
+        #
+        if {$isMove} then {
+          file delete $newSourceFileName
+        }
       }
 
       #
@@ -439,13 +603,13 @@ foreach sourceFileName $fileNames(source) \
 cd $stagingDirectory
 
 #
-# NOTE: Build the Tcl command used to archive the final package in the
+# NOTE: Build the Tcl command used to archive the final VSIX package in the
 #       output directory.
 #
 set archiveCommand [list exec -- $zip -r $outputFile *]
 
 #
-# NOTE: Build the final package archive in the output directory.
+# NOTE: Build the final VSIX package archive in the output directory.
 #
 eval $archiveCommand
 
diff --git a/tool/win/sqlite.vsix b/tool/win/sqlite.vsix
index 4bdfda5c7d..93eefac2db 100644
Binary files a/tool/win/sqlite.vsix and b/tool/win/sqlite.vsix differ