From 0cdd803ba09d130eb7a4a57c80aa5053b70b48e1 Mon Sep 17 00:00:00 2001
From: Johannes 'josch' Schauer <josch@mister-muffin.de>
Date: Fri, 21 Sep 2018 18:57:34 +0200
Subject: [PATCH] store valid modes in an array

---
 mmdebstrap | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mmdebstrap b/mmdebstrap
index faa6112..d6803fc 100755
--- a/mmdebstrap
+++ b/mmdebstrap
@@ -988,10 +988,9 @@ sub main() {
     if ($options->{mode} eq 'sudo') {
 	$options->{mode} = 'root';
     }
-    if ($options->{mode} ne 'auto' and $options->{mode} ne 'root'
-	    and $options->{mode} ne 'fakechroot'
-	    and $options->{mode} ne 'proot' and $options->{mode} ne 'unshare') {
-	die "invalid mode. Choose from auto, root, fakechroot, proot, unshare";
+    my @valid_modes = ('auto', 'root', 'unshare', 'fakechroot', 'proot');
+    if (!grep { $_ eq $options->{mode} } @valid_modes) {
+	die "invalid mode. Choose from " . (join ', ', @valid_modes);
     }
 
     if ($options->{variant} eq 'essential' and defined $options->{include}) {