commit 0ef9a5c09482649cf0cc6768ed6fc640b4ed2a0a
author zeertzjq <zeertzjq@outlook.com> Tue Jan 17 21:38:25 2023 +0000
committer Bram Moolenaar <Bram@vim.org> Tue Jan 17 21:38:25 2023 +0000
tree ae5d05622365b8043bf3068e07ad48afd64ca8bb
parent 541c87c808df91b55e51fedc4987152a3edfe80d

patch 9.0.1215: using isalpha() adds dependency on current locale

Problem:    Using isalpha() adds dependency on current locale.
Solution:   Do not use isalpha() for recognizing a URL or the end of an Ex
            command. (closes #11835)

src/option.c

diff --git a/src/option.c b/src/option.c
index 4afb518..386cf4d 100644
--- a/src/option.c
+++ b/src/option.c
@@ -1684,7 +1684,7 @@
 	errmsg = NULL;
 	startarg = arg;		// remember for error message
 
-	if (STRNCMP(arg, "all", 3) == 0 && !isalpha(arg[3])
+	if (STRNCMP(arg, "all", 3) == 0 && !ASCII_ISALPHA(arg[3])
 						&& !(opt_flags & OPT_MODELINE))
 	{
 	    /*