From c51761e08b22414fbdf17b9a6caa5733f41df67a Mon Sep 17 00:00:00 2001
From: Doug Kearns <dougkearns@gmail.com>
Date: Sat, 11 Jul 2009 15:45:55 +1000
Subject: [PATCH] Validate the pattern arg to :autocmd.

---
 common/content/events.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/common/content/events.js b/common/content/events.js
index f844ffd4..08ac4902 100644
--- a/common/content/events.js
+++ b/common/content/events.js
@@ -70,7 +70,16 @@ function AutoCommands() //{{{
         function (args)
         {
             let [event, regex, cmd] = args;
-            let events = null;
+            let events = [];
+
+            try
+            {
+                RegExp(regex);
+            }
+            catch (e)
+            {
+                return void liberator.echoerr("E475: Invalid argument: " + regex);
+            }
 
             if (event)
             {