From 75d56ccd5d6dee8d604a7062bf0047aec5361f4e Mon Sep 17 00:00:00 2001
From: Doug Kearns <dougkearns@gmail.com>
Date: Fri, 26 Sep 2008 00:29:34 +0000
Subject: [PATCH] validate 'history' values

---
 content/ui.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/content/ui.js b/content/ui.js
index e2994043..92f0f0a7 100644
--- a/content/ui.js
+++ b/content/ui.js
@@ -277,8 +277,12 @@ liberator.CommandLine = function () //{{{
     /////////////////////////////////////////////////////////////////////////////{{{
 
     liberator.options.add(["history", "hi"],
-        "Number of Ex commands and search patterns to store in the commandline history",
-        "number", 500);
+        "Number of Ex commands and search patterns to store in the command-line history",
+        "number", 500,
+        {
+            validator: function (value) value >= 0
+        }
+    );
 
     liberator.options.add(["more"],
         "Pause the message list window when more than one screen of listings is displayed",