From 29d845698e7c4f1c74af9fbb91bd4dd129429209 Mon Sep 17 00:00:00 2001
From: Huw Walters <huw.walters@gmail.com>
Date: Thu, 5 Sep 2024 19:58:32 +0100
Subject: [PATCH] Change regex used to detect GNU sed.

---
 src/std/text.ab | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/std/text.ab b/src/std/text.ab
index 600177d9..694cf325 100644
--- a/src/std/text.ab
+++ b/src/std/text.ab
@@ -17,7 +17,7 @@ pub fun replace_regex(source: Text, pattern: Text, replacement: Text, extended:
             // GNU sed versions 4.0 through 4.2 support extended regex syntax,
             // but only via the "-r" option; use that if the version information
             // contains "GNU sed".
-            unsafe $re='\bGNU sed\b'; [[ \$(sed --version 2>/dev/null) =~ \$re ]]$
+            unsafe $re='\bCopyright\b.+\bFree Software Foundation\b'; [[ \$(sed --version 2>/dev/null) =~ \$re ]]$
             let flag = status == 0 then "-r" else "-E"
             return $echo "{source}" | sed {flag} -e "s/{pattern}/{replacement}/g"$
         } else {