From 8c4ae5b0f1b839dea40d7aae40de5e15b325ff35 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@tuebingen.mpg.de>
Date: Tue, 3 Mar 2015 18:21:06 +0100
Subject: [PATCH] subcommand: Avoid referencing possibly undefined $ret.

If a subcommand does not set $ret (like the minimal "hello" example
does), and sets the nounset bash option (set -u), gsu aborts at
the attempt to reference $ret. Fix this flaw by setting $ret to
$GSU_SUCCESS prior to calling the subcommand.

Reported by Congmao Wang.
---
 subcommand | 1 +
 1 file changed, 1 insertion(+)

diff --git a/subcommand b/subcommand
index 3ff31f0..261e35f 100644
--- a/subcommand
+++ b/subcommand
@@ -549,6 +549,7 @@ gsu()
 	# external commands
 	for i in $gsu_cmds; do
 		if test "$arg" = "$i"; then
+			ret=$GSU_SUCCESS
 			com_$arg "$@"
 			if (("$ret" < 0)); then
 				gsu_err_msg
-- 
2.39.5