lib/less/js/lib/less/index.js in less-2.5.1 vs lib/less/js/lib/less/index.js in less-2.6.0

@@ -2,11 +2,11 @@
     url = require('url'),
     request,
     fs = require('fs');
 
 var less = {
-    version: [1, 6, 3],
+    version: [1, 7, 0],
     Parser: require('./parser').Parser,
     tree: require('./tree'),
     render: function (input, options, callback) {
         options = options || {};
 
@@ -18,12 +18,17 @@
         var parser = new(less.Parser)(options),
             ee;
 
         if (callback) {
             parser.parse(input, function (e, root) {
-                try { callback(e, root && root.toCSS && root.toCSS(options)); } 
-                catch (err) { callback(err); }
+                if (e) { callback(e); return; }
+                var css;
+                try {
+                    css = root && root.toCSS && root.toCSS(options);
+                } 
+                catch (err) { callback(err); return; }
+                callback(null, css);
             });
         } else {
             ee = new (require('events').EventEmitter)();
 
             process.nextTick(function () {
@@ -92,10 +97,11 @@
     }
 };
 
 require('./tree/color');
 require('./tree/directive');
+require('./tree/detached-ruleset');
 require('./tree/operation');
 require('./tree/dimension');
 require('./tree/keyword');
 require('./tree/variable');
 require('./tree/ruleset');
@@ -118,9 +124,10 @@
 require('./tree/paren');
 require('./tree/media');
 require('./tree/unicode-descriptor');
 require('./tree/negative');
 require('./tree/extend');
+require('./tree/ruleset-call');
 
 
 var isUrlRe = /^(?:https?:)?\/\//i;
 
 less.Parser.fileLoader = function (file, currentFileInfo, callback, env) {