From e5d7764386c173a37106002c6bc800866d4125e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A1draig=20Brady?= <P@draigBrady.com>
Date: Sat, 18 Oct 2025 13:02:44 +0100
Subject: [PATCH 5/6] numfmt: use multi-byte aware suffix matching

* src/numfmt.c (process_suffixed_number): Use gnulib's
mbs_endswith() helper, which is more robust in non UTF-8 locales.
Also always output a devmsg if a suffix is specified.
---
 bootstrap.conf | 1 +
 src/numfmt.c   | 9 +++------
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/bootstrap.conf b/bootstrap.conf
index f470aa48b..8f9194341 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -173,6 +173,7 @@ gnulib_modules="
   mbrlen
   mbrtoc32
   mbrtowc
+  mbs_endswith
   mbschr
   mbslen
   mbswidth
diff --git a/src/numfmt.c b/src/numfmt.c
index 67458558a..cc80ccc5d 100644
--- a/src/numfmt.c
+++ b/src/numfmt.c
@@ -1326,14 +1326,11 @@ static int
 process_suffixed_number (char *text, long double *result,
                          size_t *precision, long int field)
 {
-  if (suffix && strlen (text) > strlen (suffix))
+  if (suffix)
     {
-      char *possible_suffix = text + strlen (text) - strlen (suffix);
-
-      if (streq (suffix, possible_suffix))
+      if (mbs_endswith (text, suffix))
         {
-          /* trim suffix, ONLY if it's at the end of the text.  */
-          *possible_suffix = '\0';
+          *(text + strlen (text) - strlen (suffix)) = '\0';
           devmsg ("trimming suffix %s\n", quote (suffix));
         }
       else
-- 
2.51.0