From 7b1cdecc49bc77bde220fc575c8a00386c3f3bcf Mon Sep 17 00:00:00 2001
From: ChenYanpan <chenyanpan@xfusion.com>
Date: Wed, 8 Jul 2026 12:09:55 +0800
Subject: [PATCH] * src/metalink.c (clean_metalink_string): Fix inverted
 trailing-space check

37a40fcb added an `end > beg' bound guard to prevent a buffer
underflow, but accidentally flipped the condition from `isspace' to
`!isspace'. The loop therefore walked back over non-space characters
instead of trailing whitespace, collapsing any string without a
trailing newline to "". Every Metalink/HTTP resource URL was wiped,
so wget could not follow any mirror and
testenv/Test-metalink-http.py failed ("Expected file test.meta not
found"). Restore the `isspace' condition.

Copyright-paperwork-exempt: Yes

Upstream commit (GitLab mirror):
https://gitlab.com/gnuwget/wget/-/commit/7b1cdecc49bc77bde220fc575c8a00386c3f3bcf

--- wget-1.25.0/src/metalink.c
+++ wget-1.25.0/src/metalink.c
@@ -1061,7 +1061,7 @@ end++;
   /* If we are at the end of the string, search the first legit
      character going backward.  */
   if (*end == '\0')
-    while (end > beg && !isspace(*(end - 1)))
+    while (end > beg && isspace(*(end - 1)))
       end--;
 
   new = xmemdup0 (beg, end - beg);