[perl #72156]: substitute `less -R' for `less' for groff's new usage

of ANSI escape codes by setting $Config{less} (and thereby
$Config{pager}).

1 files changed, 9 insertions, 0 deletions

diff --git a/Configure b/Configure
index 8d93a3316e..d9397bf2ad 100755
--- a/Configure
+++ b/Configure
@@ -2438,6 +2438,15 @@ for file in $trylist; do
 		;;
 	esac
 done
+case "$less" in
+'')	;;
+*)	if $less -R </dev/null >/dev/null; then
+		echo "Substituting less -R for less."
+		less="$less -R"
+		_less=$less
+	fi
+	;;
+esac
 case "$egrep" in
 egrep)
 	echo "Substituting grep for egrep."