Added support for expressions that reference functions.

lib/handlebars.js

@@ -2,6 +2,7 @@ Handlebars = {
   compile: function(string) {
     var compiler = new Handlebars.Compiler(string);
     var result   = compiler.compile();
+    console.log(result);
     return new Function("context", "fallback", "fallback = fallback || {}; var stack = [];" + result);
   },
 
@@ -118,7 +119,8 @@ Handlebars.Compiler.prototype = {
   },
 
   addExpression: function(mustache) {
-    this.fn += "out = out + " + this.lookupFor(mustache) + "; ";
+    var expr = this.lookupFor(mustache);
+    this.fn += "out = out + (Handlebars.isFunction(" + expr + ") ? " + expr + "() : " + expr + "); ";
   },
 
   lookupFor: function(param) {