From 43bb8ec0ee7e334ae9c9426f2866ca8095edb3c2 Mon Sep 17 00:00:00 2001
From: brian d foy <briandfoy@pobox.com>
Date: Wed, 6 Sep 2023 15:03:55 -0400
Subject: [PATCH] don't use /a thing because that's a v5.14 thing.  Oops.

This is my fault for suggesting it.
---
 bin/nl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/nl b/bin/nl
index 4ad41e42..095eb2a6 100755
--- a/bin/nl
+++ b/bin/nl
@@ -86,7 +86,7 @@ else {
 }
 
 if (defined $startnum) {
-	if ($startnum !~ m/\A[\+\-]?\d+\Z/a) {
+	if ($startnum !~ m/\A[\+\-]?[0-9]+\Z/) {
 		warn "$program: invalid starting line number: '$startnum'\n";
 		exit EX_FAILURE;
 	}