diff --git a/manifest b/manifest
index c6e2c51338..b61de4df04 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Increase\sthe\sversion\snumber\sto\s3.13.0\son\saccount\sof\sthe\snew\ssession\sextension.
-D 2016-03-30T14:26:36.915
+C Simplifications\sand\sclarification\sto\supdate\scallback\shandling\sin\sthe\nOP_Delete\sand\sOP_Insert\sopcodes.
+D 2016-03-30T15:30:07.231
 F Makefile.in e812bb732d7af01baa09f1278bd4f4a2e3a09449
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc e6ee58b849c116d5554024f524cbf61f064f6f01
@@ -378,7 +378,7 @@ F src/shell.c cd3f82fdc5c895b817a375b7ab8319cb41f447ce
 F src/sqlite.h.in a1d7a367997f80c7075303aaf73e5fc46261c11c
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 98f72cbfe00169c39089115427d06ea05fe4b4a2
-F src/sqliteInt.h 410bd07098423b887874d9d2ff9ed6f8e3284839
+F src/sqliteInt.h 594bf31a7a0cc788688ca947e562576e23bd7904
 F src/sqliteLimit.h c0373387c287c8d0932510b5547ecde31b5da247
 F src/status.c 70912d7be68e9e2dbc4010c93d344af61d4c59ba
 F src/table.c 5226df15ab9179b9ed558d89575ea0ce37b03fc9
@@ -439,7 +439,7 @@ F src/update.c 3e67ab3c0814635f355fb1f8ab010a2b9e016e7d
 F src/utf.c 699001c79f28e48e9bcdf8a463da029ea660540c
 F src/util.c 8873d696c9ccc4206058c402e09e101f1b81561a
 F src/vacuum.c feb1eabb20987983d9350cad98299b21fa811f52
-F src/vdbe.c 04e0606bc0505924036a974759703af6a3664904
+F src/vdbe.c 0f0e4a6255f9a5272857a818314d081db26bcd90
 F src/vdbe.h c16ba943d407baa1c7085eefea73a063fc631863
 F src/vdbeInt.h ddb157974436d87652de7dc641f7191496d9a8cd
 F src/vdbeapi.c ba85b78fe08dc4a9ce747e62c89a2b4a4547e74c
@@ -1480,7 +1480,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 9cdf813c6aaaddc01d2d4e04636c83fcda04d971
-R 7a69958e274665351e7e782b27ccbb0b
+P e9bcd5acb9ab7b3d55c96519ca10f51f35e24cd9
+R 7d699e46158684aaeb0674ba8ed1262b
 U drh
-Z fc241d926edbc77d507e66ad4423e83d
+Z 8edbe6879cd34861bc153d7b5712adb5
diff --git a/manifest.uuid b/manifest.uuid
index 5ef2f2b86c..7ffd9886fc 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-e9bcd5acb9ab7b3d55c96519ca10f51f35e24cd9
\ No newline at end of file
+47887ef89ed60ddb869d65e0957c1c4b2115f169
\ No newline at end of file
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 85004035ba..d789cc00e4 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -2927,9 +2927,6 @@ struct AuthContext {
 
 /*
 ** Bitfield flags for P5 value in various opcodes.
-**
-** Note that the values for ISNOOP and LENGTHARG are the same.  But as 
-** those bits are never used on the same opcode, the overlap is harmless.
 */
 #define OPFLAG_NCHANGE       0x01    /* OP_Insert: Set to update db->nChange */
                                      /* Also used in P2 (not P5) of OP_Delete */
@@ -2938,7 +2935,9 @@ struct AuthContext {
 #define OPFLAG_ISUPDATE      0x04    /* This OP_Insert is an sql UPDATE */
 #define OPFLAG_APPEND        0x08    /* This is likely to be an append */
 #define OPFLAG_USESEEKRESULT 0x10    /* Try to avoid a seek in BtreeInsert() */
+#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
 #define OPFLAG_ISNOOP        0x40    /* OP_Delete does pre-update-hook only */
+#endif
 #define OPFLAG_LENGTHARG     0x40    /* OP_Column only used for length() */
 #define OPFLAG_TYPEOFARG     0x80    /* OP_Column only used for typeof() */
 #define OPFLAG_BULKCSR       0x01    /* OP_Open** used to open bulk cursor */
diff --git a/src/vdbe.c b/src/vdbe.c
index 787d2b7b48..84a5087e01 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -4317,6 +4317,7 @@ case OP_InsertInt: {
     assert( pC->iDb>=0 );
     zDb = db->aDb[pC->iDb].zName;
     pTab = pOp->p4.pTab;
+    assert( HasRowid(pTab) );
     op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT);
   }else{
     pTab = 0; /* Not needed.  Silence a comiler warning. */
@@ -4328,7 +4329,6 @@ case OP_InsertInt: {
   if( db->xPreUpdateCallback 
    && pOp->p4type==P4_TABLE
    && !(pOp->p5 & OPFLAG_ISUPDATE)
-   && HasRowid(pTab)
   ){
     sqlite3VdbePreUpdateHook(p, pC, SQLITE_INSERT, zDb, pTab, iKey, pOp->p2);
   }
@@ -4357,7 +4357,7 @@ case OP_InsertInt: {
 
   /* Invoke the update-hook if required. */
   if( rc ) goto abort_due_to_error;
-  if( db->xUpdateCallback && op && HasRowid(pTab) ){
+  if( db->xUpdateCallback && op ){
     db->xUpdateCallback(db->pUpdateArg, op, zDb, pTab->zName, iKey);
   }
   break;
@@ -4428,11 +4428,12 @@ case OP_Delete: {
   ** of p4.pTab. Finally, if p5 is true, indicating that this cursor was
   ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set 
   ** VdbeCursor.movetoTarget to the current rowid.  */
-  if( pOp->p4.pTab && HAS_UPDATE_HOOK(db) ){
+  if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){
     assert( pC->iDb>=0 );
+    assert( pOp->p4.pTab!=0 );
     zDb = db->aDb[pC->iDb].zName;
     pTab = pOp->p4.pTab;
-    if( pOp->p5 && pC->isTable ){
+    if( (pOp->p5 & OPFLAG_SAVEPOSITION)!=0 && pC->isTable ){
       sqlite3BtreeKeySize(pC->uc.pCursor, &pC->movetoTarget);
     }
   }else{
@@ -4450,9 +4451,8 @@ case OP_Delete: {
         pOp->p3
     );
   }
-#endif
-
   if( opflags & OPFLAG_ISNOOP ) break;
+#endif
  
   /* Only flags that can be set are SAVEPOISTION and AUXDELETE */ 
   assert( (pOp->p5 & ~(OPFLAG_SAVEPOSITION|OPFLAG_AUXDELETE))==0 );
@@ -4480,7 +4480,7 @@ case OP_Delete: {
   /* Invoke the update-hook if required. */
   if( opflags & OPFLAG_NCHANGE ){
     p->nChange++;
-    if( rc==SQLITE_OK && db->xUpdateCallback && HasRowid(pTab) ){
+    if( db->xUpdateCallback && HasRowid(pTab) ){
       db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, pTab->zName,
           pC->movetoTarget);
       assert( pC->iDb>=0 );