patch 9.1.2147: Compile warning in strings.c

Problem:  Compile warning in strings.c
Solution: Use const qualifier (John Marriott).

closes: #19387

Signed-off-by: John Marriott <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>

Author: John Marriott

runtime/doc/version9.txt

@@ -1,4 +1,4 @@
-*version9.txt*	For Vim version 9.1.  Last change: 2026 Feb 12
+*version9.txt*	For Vim version 9.1.  Last change: 2026 Feb 13
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -52557,4 +52557,8 @@ Patch 9.1.2146
 Problem:  filetype: cel files are not recognized
 Solution: Detect *.cel files as cel filetype (Stefan VanBuren).
 
+Patch 9.1.2147
+Problem:  Compile warning in strings.c
+Solution: Use const qualifier (John Marriott).
+
  vim:tw=78:ts=8:noet:ft=help:norl:fdm=manual:nofoldenable

src/strings.c

@@ -3156,7 +3156,7 @@ parse_fmt_types(
     {
 	if (*p != '%')
 	{
-	    char    *q = strchr(p + 1, '%');
+	    const char    *q = strchr(p + 1, '%');
 	    size_t  n = (q == NULL) ? STRLEN(p) : (size_t)(q - p);
 
 	    p += n;
@@ -3557,7 +3557,7 @@ vim_vsnprintf_typval(
     {
 	if (*p != '%')
 	{
-	    char    *q = strchr(p + 1, '%');
+	    const char    *q = strchr(p + 1, '%');
 	    size_t  n = (q == NULL) ? STRLEN(p) : (size_t)(q - p);
 
 	    // Copy up to the next '%' or NUL without any changes.
@@ -3885,7 +3885,7 @@ vim_vsnprintf_typval(
 		    else
 		    {
 			// memchr on HP does not like n > 2^31  !!!
-			char *q = memchr(str_arg, '\0',
+			const char *q = memchr(str_arg, '\0',
 				  precision <= (size_t)0x7fffffffL ? precision
 						       : (size_t)0x7fffffffL);
 

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2147,
 /**/
     2146,
 /**/