From 5602342a16e81be25ec00b12af847fc0c72f6589 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 28 Oct 2023 09:07:14 -0700
Subject: [PATCH 05/11] maint: port to oddball tolower

* src/digest.c (hex_equal): Work even in oddball locales
where tolower does not work as expected on ASCII letters.
---
 src/digest.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/digest.c b/src/digest.c
index 336392608..052fa4db7 100644
--- a/src/digest.c
+++ b/src/digest.c
@@ -18,7 +18,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <getopt.h>
 #include <sys/types.h>
 
@@ -1122,9 +1121,9 @@ hex_equal (unsigned char const *hex_digest, unsigned char const *bin_buffer)
   size_t cnt;
   for (cnt = 0; cnt < digest_bin_bytes; ++cnt)
     {
-      if (tolower (hex_digest[2 * cnt])
+      if (c_tolower (hex_digest[2 * cnt])
           != bin2hex[bin_buffer[cnt] >> 4]
-          || (tolower (hex_digest[2 * cnt + 1])
+          || (c_tolower (hex_digest[2 * cnt + 1])
               != (bin2hex[bin_buffer[cnt] & 0xf])))
         break;
     }
-- 
2.39.2