allow regexes for fuzzyfind.

lib/widget.js

@@ -5248,6 +5248,15 @@ List.prototype.appendItem = function(item) {
 List.prototype.fuzzyFind = function(search, back) {
   var index = this.getItemIndex(this.selected);
   var start = this.selected + (back ? -1 : 1);
+
+  if (search[0] === '/' && search[search.length - 1] === '/') {
+    try {
+      search = new RegExp(search.slice(1, -1));
+    } catch (e) {
+      ;
+    }
+  }
+
   var finder = typeof search === 'string'
     ? function(item) { return !!~item.indexOf(search); }
     : search.test.bind(search);