More explicit error message: Tell which parital is unknown.

CHANGES.md

@@ -1,8 +1,10 @@
 # mustache.js Changes
 
 ## 0.2.3 (??-??-????)
+* Better error message for missing partials.
 * Added more robust type detection.
 
+
 ## 0.2.2 (11-02-2010)
 
 * ctemplate compat: Partials are indicated by >, not <.

mustache.js

@@ -81,7 +81,7 @@ var Mustache = function() {
         throw({message: "subcontext for '" + name + "' is not an object"});
       }
       if(!partials || !partials[name]) {
-        throw({message: "unknown_partial"});
+        throw({message: "unknown_partial '" + name + "'"});
       }
       return this.render(partials[name], context[name], partials, true);
     },