The FuncDev.nArg field values -3 and -4 now have special meansing of 1 or more

or 2 or more arguments, respectively.  This saves space in the built-in
function table, resulting in slightly faster performance and a reduced binary
size.

FossilOrigin-Name: 753fd747f24c5e9a019eb00b8a4f66e65c6733ba10a7adbd1b55786867c32ca6

manifest

@@ -1,5 +1,5 @@
-C Have\sfts5\sbetter\shandle\sOOM\serrors\sfrom\ssqlite3_blob_close().
+C The\sFuncDev.nArg\sfield\svalues\s-3\sand\s-4\snow\shave\sspecial\smeansing\sof\s1\sor\smore\nor\s2\sor\smore\sarguments,\srespectively.\s\sThis\ssaves\sspace\sin\sthe\sbuilt-in\nfunction\stable,\sresulting\sin\sslightly\sfaster\sperformance\sand\sa\sreduced\sbinary\nsize.
-D 2025-01-21T14:34:59.118
+D 2025-01-21T15:12:00.408
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md e108e1e69ae8e8a59e93c455654b8ac9356a11720d3345df2a4743e9590fb20d
@@ -722,7 +722,7 @@ F src/btree.c 63ca6b647342e8cef643863cd0962a542f133e1069460725ba4461dcda92b03c
 F src/btree.h 18e5e7b2124c23426a283523e5f31a4bff029131b795bb82391f9d2f3136fc50
 F src/btreeInt.h 98aadb6dcb77b012cab2574d6a728fad56b337fc946839b9898c4b4c969e30b6
 F src/build.c c6b09342d870a509529244ed8e19b4175a261f2e3163c199241d69e1d8a57607
-F src/callback.c db3a45e376deff6a16c0058163fe0ae2b73a2945f3f408ca32cf74960b28d490
+F src/callback.c acae8c8dddda41ee85cfdf19b926eefe830f371069f8aadca3aa39adf5b1c859
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c d35723024b963edce9c0fad5b3303e8bb9266083784844baed10a6dedfe26f3b
 F src/date.c 89ce1ff20512a7fa5070ba6e7dd5c171148ca7d580955795bf97c79c2456144a
@@ -732,7 +732,7 @@ F src/delete.c 03a77ba20e54f0f42ebd8eddf15411ed6bdb06a2c472ac4b6b336521bf7cea42
 F src/expr.c 30a407765d4e4b592f9f958085fb4e8336e54fa46a70ade7f5a67111bc191563
 F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
 F src/fkey.c 928ed2517e8732113d2b9821aa37af639688d752f4ea9ac6e0e393d713eeb76f
-F src/func.c 89b733a5f513c4bc06b7271384363d5693d62782de8295bc87b97d79862c9714
+F src/func.c 30051410d0379059e1e3642ffc0caae6963a2b01b3b6d9dd44c5e09b1a66d066
 F src/global.c a19e4b1ca1335f560e9560e590fc13081e21f670643367f99cb9e8f9dc7d615b
 F src/hash.c 9ee4269fb1d6632a6fecfb9479c93a1f29271bddbbaf215dd60420bcb80c7220
 F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
@@ -2208,8 +2208,8 @@ F tool/version-info.c 3b36468a90faf1bbd59c65fd0eb66522d9f941eedd364fabccd7227350
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh 49a486c5069de041aedcbde4de178293e0463ae9918ecad7539eedf0ec77a139
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P a8d9dcfd23fbfcd887e451382836c1e88215984cc01e00be11387dbf4ab26fd8
+P f418350f3f83147bc5817a885be6e39ff9ff5722742a88d17600729c53c65010
-R 0ff09c4d1a6df4a00a8ce3e62a42f2fa
+R 214f345108f048affd4b7abd9f2ea035
-U dan
+U drh
-Z dbb8340d556717da4724fb10b820bbe7
+Z b46d6184b5d599a41424bec3e41b4c80
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-f418350f3f83147bc5817a885be6e39ff9ff5722742a88d17600729c53c65010
+753fd747f24c5e9a019eb00b8a4f66e65c6733ba10a7adbd1b55786867c32ca6

src/callback.c

@@ -302,12 +302,18 @@ static int matchQuality(
   u8 enc          /* Desired text encoding */
 ){
   int match;
-  assert( p->nArg>=-1 );
+  assert( p->nArg>=(-4) && p->nArg!=(-2) );
+  assert( nArg>=(-2) );
 
   /* Wrong number of arguments means "no match" */
   if( p->nArg!=nArg ){
-    if( nArg==(-2) ) return (p->xSFunc==0) ? 0 : FUNC_PERFECT_MATCH;
+    if( nArg==(-2) ) return p->xSFunc==0 ? 0 : FUNC_PERFECT_MATCH;
     if( p->nArg>=0 ) return 0;
+    /* Special p->nArg values available to built-in functions only:
+    **    -3     1 or more arguments required
+    **    -4     2 or more arguments required
+    */
+    if( p->nArg<(-2) && nArg<(-2-p->nArg) ) return 0;
   }
 
   /* Give a better score to a function with a specific number of arguments

src/func.c

@@ -2695,12 +2695,10 @@ void sqlite3RegisterBuiltinFunctions(void){
     FUNCTION(rtrim,              2, 2, 0, trimFunc         ),
     FUNCTION(trim,               1, 3, 0, trimFunc         ),
     FUNCTION(trim,               2, 3, 0, trimFunc         ),
-    FUNCTION(min,               -1, 0, 1, minmaxFunc       ),
+    FUNCTION(min,               -3, 0, 1, minmaxFunc       ),
-    FUNCTION(min,                0, 0, 1, 0                ),
     WAGGREGATE(min, 1, 0, 1, minmaxStep, minMaxFinalize, minMaxValue, 0,
                                  SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ),
-    FUNCTION(max,               -1, 1, 1, minmaxFunc       ),
+    FUNCTION(max,               -3, 1, 1, minmaxFunc       ),
-    FUNCTION(max,                0, 1, 1, 0                ),
     WAGGREGATE(max, 1, 1, 1, minmaxStep, minMaxFinalize, minMaxValue, 0,
                                  SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ),
     FUNCTION2(typeof,            1, 0, 0, typeofFunc,  SQLITE_FUNC_TYPEOF),
@@ -2727,11 +2725,8 @@ void sqlite3RegisterBuiltinFunctions(void){
     FUNCTION(hex,                1, 0, 0, hexFunc          ),
     FUNCTION(unhex,              1, 0, 0, unhexFunc        ),
     FUNCTION(unhex,              2, 0, 0, unhexFunc        ),
-    FUNCTION(concat,            -1, 0, 0, concatFunc       ),
+    FUNCTION(concat,            -3, 0, 0, concatFunc       ),
-    FUNCTION(concat,             0, 0, 0, 0                ),
+    FUNCTION(concat_ws,         -4, 0, 0, concatwsFunc     ),
-    FUNCTION(concat_ws,         -1, 0, 0, concatwsFunc     ),
-    FUNCTION(concat_ws,          0, 0, 0, 0                ),
-    FUNCTION(concat_ws,          1, 0, 0, 0                ),
     INLINE_FUNC(ifnull,          2, INLINEFUNC_coalesce, 0 ),
     VFUNCTION(random,            0, 0, 0, randomFunc       ),
     VFUNCTION(randomblob,        1, 0, 0, randomBlob       ),
@@ -2775,8 +2770,6 @@ void sqlite3RegisterBuiltinFunctions(void){
 #ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
     FUNCTION(unknown,           -1, 0, 0, unknownFunc      ),
 #endif
-    FUNCTION(coalesce,           1, 0, 0, 0                ),
-    FUNCTION(coalesce,           0, 0, 0, 0                ),
 #ifdef SQLITE_ENABLE_MATH_FUNCTIONS
     MFUNCTION(ceil,              1, xCeil,     ceilingFunc ),
     MFUNCTION(ceiling,           1, xCeil,     ceilingFunc ),
@@ -2814,7 +2807,7 @@ void sqlite3RegisterBuiltinFunctions(void){
     MFUNCTION(pi,                0, 0,         piFunc      ),
 #endif /* SQLITE_ENABLE_MATH_FUNCTIONS */
     FUNCTION(sign,               1, 0, 0,      signFunc    ),
-    INLINE_FUNC(coalesce,       -1, INLINEFUNC_coalesce, 0 ),
+    INLINE_FUNC(coalesce,       -4, INLINEFUNC_coalesce, 0 ),
     INLINE_FUNC(iif,             2, INLINEFUNC_iif,      0 ),
     INLINE_FUNC(iif,             3, INLINEFUNC_iif,      0 ),
     INLINE_FUNC(if,              2, INLINEFUNC_iif,      0 ),