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/ex_docmd.c

diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 64ab247..e51f849 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -2747,7 +2747,7 @@
     for (i = 0; cmd[i] != NUL; ++i)
 	if (((char_u *)cmd)[i] != (*pp)[i])
 	    break;
-    if (i >= len && !isalpha((*pp)[i]) && (*pp)[i] != '_'
+    if (i >= len && !ASCII_ISALPHA((*pp)[i]) && (*pp)[i] != '_'
 			 && (!noparen || ((*pp)[i] != '(' && (*pp)[i] != '.')))
     {
 	*pp = skipwhite(*pp + i);