From: drh <>
Date: Sat, 11 Apr 2026 11:24:09 +0000 (+0000)
Subject: Fix the &#92;B escape for prompts so that it uses wcwidth() instead of
X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=c8b130f2550155b07174765be33ba7c52ec6bef3;p=thirdparty%2Fsqlite.git

Fix the &#92;B escape for prompts so that it uses wcwidth() instead of
strlen() to compute spacing.

FossilOrigin-Name: c6ff4f701d9cf963cf2472ed72ad4e201227560dde2ba8d48602af2e49170e89
---

diff --git a/manifest b/manifest
index fd9c7473a9..d19732cd62 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Ensure\sthat\ssqlite3-opfs-async-proxy.js\sis\scopied\sinto\sthe\sfiddle\starget\sdirs.
-D 2026-04-10T23:25:57.996
+C Fix\sthe\s&#92;B\sescape\sfor\sprompts\sso\sthat\sit\suses\swcwidth()\sinstead\sof\nstrlen()\sto\scompute\sspacing.
+D 2026-04-11T11:24:09.462
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -735,7 +735,7 @@ F src/random.c 606b00941a1d7dd09c381d3279a058d771f406c5213c9932bbd93d5587be4b9c
 F src/resolve.c 928ff887f2a7c64275182060d94d06fdddbe32226c569781cf7e7edc6f58d7fd
 F src/rowset.c 8432130e6c344b3401a8874c3cb49fefe6873fec593294de077afea2dce5ec97
 F src/select.c ffe199f025a0dd74670d2a77232bdea364a4d7b36f32c64a6572d39ba6a11576
-F src/shell.c.in 793a37b4db7a4e3c56ad997b2ff8b3210ab9954c7ea857558fa6ae3bb8750ccf
+F src/shell.c.in 50505cdfdae8163b7c7476c7ad94c79c3b851274301e680dbb7b91c6d6bdc13b
 F src/sqlite.h.in a5605faa9479bbaac16c4ab43eb09ff50632004a8e05084d3fde56063ef73766
 F src/sqlite3.rc 015537e6ac1eec6c7050e17b616c2ffe6f70fca241835a84a4f0d5937383c479
 F src/sqlite3ext.h 1b7a0ee438bb5c2896d0609c537e917d8057b3340f6ad004d2de44f03e3d3cca
@@ -2197,8 +2197,8 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
 F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
 F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
-P 3b17500dc6338df23d1ed0572cd71593da5a9b048731f73242e27b9a76553a27
-R 476d91cbd2e583bce4c47c269d3e9c58
-U stephan
-Z 2eee38e661f38d66a6834d873120875b
+P 7c9998de1b839cfbe12c4328ac5176f5fae981e139c5f8888b100752f5e4756b
+R effaffd5b612cee5e2c7467276ff636f
+U drh
+Z 38f50b0294cde0ae9e16e79e3a672fcb
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index d406694df1..723703ae42 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-7c9998de1b839cfbe12c4328ac5176f5fae981e139c5f8888b100752f5e4756b
+c6ff4f701d9cf963cf2472ed72ad4e201227560dde2ba8d48602af2e49170e89
diff --git a/src/shell.c.in b/src/shell.c.in
index 1d6af32b67..4e5f913c6c 100644
--- a/src/shell.c.in
+++ b/src/shell.c.in
@@ -1100,12 +1100,13 @@ static char *expand_prompt(
   /* Expand the \B, if there is one and if this is a continuation prompt */
   if( idxSpace>=0 && zPrior!=0 && zPrior[0]!=0 ){
     char *zOther = expand_prompt(p, 0, p->mainPrompt);
-    int nOther = strlen30(zOther);
+    size_t wOther = sqlite3_qrf_wcswidth(zOther);
+    size_t wThis = sqlite3_qrf_wcswidth(sqlite3_str_value(pOut));
     sqlite3_free(zOther);
-    if( nOther>sqlite3_str_length(pOut) ){
+    if( wOther>wThis ){
       char *z;
-      int nNew = nOther - sqlite3_str_length(pOut);
       int len;
+      size_t nNew = wOther - wThis;
       sqlite3_str_appendchar(pOut, nNew, ' ');
       len = sqlite3_str_length(pOut);
       if( len>idxSpace ){