From 2a4adf00f260d32c40a6b3fc84380b6de6ef7a1e Mon Sep 17 00:00:00 2001
From: kn <kn@openbsd.org>
Date: Sat, 2 Jul 2022 19:00:35 +0000
Subject: [PATCH] Make -s accept HUP like kill(1) and GNU timeout(1) do

timeout.c's parse_signal() basically does what kill.c's signame_to_num()
does, except it expects "SIG" in string signals.

Borrow the isalpha() check from kill.c to get the same behaviour.

OK deraadt
---
 usr.bin/timeout/timeout.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/usr.bin/timeout/timeout.c b/usr.bin/timeout/timeout.c
index 057b396950d..f93d782f901 100644
--- a/usr.bin/timeout/timeout.c
+++ b/usr.bin/timeout/timeout.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: timeout.c,v 1.20 2022/01/12 22:51:44 tb Exp $ */
+/* $OpenBSD: timeout.c,v 1.21 2022/07/02 19:00:35 kn Exp $ */
 
 /*
  * Copyright (c) 2021 Job Snijders <job@openbsd.org>
@@ -32,6 +32,7 @@
 #include <sys/time.h>
 #include <sys/wait.h>
 
+#include <ctype.h>
 #include <err.h>
 #include <errno.h>
 #include <getopt.h>
@@ -104,10 +105,11 @@ parse_signal(const char *str)
 	long long	 sig;
 	const char	*errstr;
 
-	if (strncasecmp(str, "SIG", 3) == 0) {
+	if (isalpha((unsigned char)*str)) {
 		int i;
 
-		str += 3;
+		if (strncasecmp(str, "SIG", 3) == 0)
+			str += 3;
 		for (i = 1; i < NSIG; i++) {
 			if (strcasecmp(str, sys_signame[i]) == 0)
 				return (i);
-- 
2.20.1