Ignore urlbar inputs without any special characters

lib/typoFixer.js

 /*
  * This file is part of the URL Fixer,
  * Copyright (C) 2006-2012 Eyeo GmbH
  *
  * URL Fixer is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * URL Fixer is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 103 matching lines @@
   if (/^([\w\-]+:)/.test(value) && !isKnownScheme(RegExp.$1))
     return null;
 
   // Ignore search keywords and such
   if ("getShortcutOrURI" in window && window.getShortcutOrURI(value) != value)
     return null;
 
   // Spaces before the first slash or period is probably a quick search
   if (/^[^\/\.\s]+\s/.test(value))
     return null;
+  
+  // No special characters is probably a quick search
+  if (!/[^\w ]/.test(value))
+    return null;
 
   let [prefix, domain, suffix] = parseURL(value);
   if (!domain)
     return null;
 
   let oldDomain = domain;
   if (!isIPAddress(domain))
   {
     processTypedDomain(domain);
 
@@ skipping 86 matching lines @@
     stringBundle = Services.strings.createBundle("chrome://" + require("info").addonName + "/locale/typo.properties?" + Math.random());
   let result = [
     stringBundle.GetStringFromName("urlfixer.isItCorrect"),
     stringBundle.GetStringFromName("urlfixer.yes"),
     stringBundle.GetStringFromName("urlfixer.no")
   ];
 
   getInfobarTexts = function() result;
   return getInfobarTexts();
 }