From fa2865fb10bbcefbb482254f982848d8e293b585 Mon Sep 17 00:00:00 2001
From: Pragmatic Software <pragma78@gmail.com>
Date: Tue, 8 Sep 2015 01:30:08 -0700
Subject: [PATCH] Fix potential undefined variable warning

---
 PBot/Factoids.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PBot/Factoids.pm b/PBot/Factoids.pm
index b70734b4..3c27aa59 100644
--- a/PBot/Factoids.pm
+++ b/PBot/Factoids.pm
@@ -382,7 +382,7 @@ sub expand_action_arguments {
     $action =~ s/\$args/$input/g;
   }
 
-  $input =~ s/'/\\'/g;
+  $input =~ s/'/\\'/g if defined $input;
   my @args = shellwords($input);
 
   while ($action =~ m/\$arg\[([^]]+)]/g) {