From f64272caea7caaff58a853612f02f1ecc7bac119 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 21 Jun 2018 14:51:17 +0930
Subject: [PATCH] tools/check-manpage.sh: make it work on FreeBSD.

Extended regular expressions are more compatible, it seems (and simpler!).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 tools/check-manpage.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/check-manpage.sh b/tools/check-manpage.sh
index 4c35f1b9f..50f917edb 100755
--- a/tools/check-manpage.sh
+++ b/tools/check-manpage.sh
@@ -30,7 +30,7 @@ get_cmd_opts()
 CMD_OPTNAMES=$(get_cmd_opts "$1" | sort)
 
 # Now, gather (long) opt names from man page, make sure they match.
-MAN_OPTNAMES=$(sed -n 's/^\*\(--\)\?\([^*/]*\)\*\(=\?\).*::/\2\3/p' < "$2" | sort)
+MAN_OPTNAMES=$(sed -E -n 's/^\*(--)?([^*/]*)\*(=?).*::/\2\3/p' < "$2" | sort)
 
 if [ "$CMD_OPTNAMES" != "$MAN_OPTNAMES" ]; then
     echo "diff of command names vs manpage names":