Index: misc/autocomplete.js
===================================================================
--- misc/autocomplete.js	(revision 26)
+++ misc/autocomplete.js	(working copy)
@@ -254,6 +254,13 @@
   var db = this;
   this.searchString = searchString;
 
+  // See if this string needs to be searched for anyway.
+  searchString = searchString.replace(/^\s+|\s+$/, '');
+  if (searchString.length <= 0 ||
+    searchString.charAt(searchString.length - 1) == ',') {
+    return;
+  }
+
   // See if this key has been searched for before
   if (this.cache[searchString]) {
     return this.owner.found(this.cache[searchString]);