From cc837247634c3025ca03280df1d481482c2266f2 Mon Sep 17 00:00:00 2001
From: James Long <longster@gmail.com>
Date: Fri, 3 Apr 2015 12:36:31 -0400
Subject: [PATCH] prep for v1.3.0

---
 MAINTENANCE.md               |   2 +-
 browser/nunjucks-slim.js     | 139 +++++----
 browser/nunjucks-slim.min.js |   4 +-
 browser/nunjucks.js          | 573 +++++++++++++++++++----------------
 browser/nunjucks.min.js      |   8 +-
 package.json                 |   2 +-
 6 files changed, 398 insertions(+), 330 deletions(-)

diff --git a/MAINTENANCE.md b/MAINTENANCE.md
index 84310d89..b40b7114 100644
--- a/MAINTENANCE.md
+++ b/MAINTENANCE.md
@@ -16,7 +16,7 @@ Replace `v1.2.3` with whatever the last version was, and you'll see all the chan
 3. Run the command to make sure the ready-made files for the browser are up-to-date.
 
 ```
-$ make browserfiles
+$ npm run browserfiles
 ```
 
 4. Update the version in `package.json`
diff --git a/browser/nunjucks-slim.js b/browser/nunjucks-slim.js
index 64e32075..4a6fdb9a 100644
--- a/browser/nunjucks-slim.js
+++ b/browser/nunjucks-slim.js
@@ -1,8 +1,9 @@
-// Browser bundle of nunjucks 1.2.0 (slim, only works with precompiled templates)
+// Browser bundle of nunjucks 1.3.0 (slim, only works with precompiled templates)
 
 (function() {
 var modules = {};
 (function() {
+'use strict';
 
 // A simple class system, more documentation to come
 
@@ -19,8 +20,8 @@ function extend(cls, name, props) {
         var src = props[k];
         var parent = prototype[k];
 
-        if(typeof parent == "function" &&
-           typeof src == "function" &&
+        if(typeof parent === 'function' &&
+           typeof src === 'function' &&
            fnTest.test(src)) {
             prototype[k] = (function (src, parent) {
                 return function() {
@@ -53,9 +54,9 @@ function extend(cls, name, props) {
     new_cls.prototype.constructor = new_cls;
 
     new_cls.extend = function(name, props) {
-        if(typeof name == "object") {
+        if(typeof name === 'object') {
             props = name;
-            name = "anonymous";
+            name = 'anonymous';
         }
         return extend(new_cls, name, props);
     };
@@ -63,18 +64,20 @@ function extend(cls, name, props) {
     return new_cls;
 }
 
-modules['object'] = extend(Object, "Object", {});
+modules['object'] = extend(Object, 'Object', {});
 })();
 (function() {
+'use strict';
+
 var ArrayProto = Array.prototype;
 var ObjProto = Object.prototype;
 
 var escapeMap = {
     '&': '&amp;',
     '"': '&quot;',
-    "'": '&#39;',
-    "<": '&lt;',
-    ">": '&gt;'
+    '\'': '&#39;',
+    '<': '&lt;',
+    '>': '&gt;'
 };
 
 var escapeRegex = /[&"'<>]/g;
@@ -111,7 +114,7 @@ exports.TemplateError = function(message, lineno, colno) {
 
     if (message instanceof Error) { // for casting regular js errors
         err = message;
-        message = message.name + ": " + message.message;
+        message = message.name + ': ' + message.message;
     } else {
         if(Error.captureStackTrace) {
             Error.captureStackTrace(err);
@@ -125,7 +128,7 @@ exports.TemplateError = function(message, lineno, colno) {
     err.firstUpdate = true;
 
     err.Update = function(path) {
-        var message = "(" + (path || "unknown path") + ")";
+        var message = '(' + (path || 'unknown path') + ')';
 
         // only show lineno + colno next to path of template
         // where error occurred
@@ -158,19 +161,19 @@ exports.escape = function(val) {
 };
 
 exports.isFunction = function(obj) {
-    return ObjProto.toString.call(obj) == '[object Function]';
+    return ObjProto.toString.call(obj) === '[object Function]';
 };
 
 exports.isArray = Array.isArray || function(obj) {
-    return ObjProto.toString.call(obj) == '[object Array]';
+    return ObjProto.toString.call(obj) === '[object Array]';
 };
 
 exports.isString = function(obj) {
-    return ObjProto.toString.call(obj) == '[object String]';
+    return ObjProto.toString.call(obj) === '[object String]';
 };
 
 exports.isObject = function(obj) {
-    return ObjProto.toString.call(obj) == '[object Object]';
+    return ObjProto.toString.call(obj) === '[object Object]';
 };
 
 exports.groupBy = function(obj, val) {
@@ -225,7 +228,7 @@ exports.each = function(obj, func, context) {
         return;
     }
 
-    if(ArrayProto.each && obj.each == ArrayProto.each) {
+    if(ArrayProto.each && obj.each === ArrayProto.each) {
         obj.forEach(func, context);
     }
     else if(obj.length === +obj.length) {
@@ -325,7 +328,7 @@ exports.indexOf = Array.prototype.indexOf ?
 
 if(!Array.prototype.map) {
     Array.prototype.map = function() {
-        throw new Error("map is unimplemented for this js engine");
+        throw new Error('map is unimplemented for this js engine');
     };
 }
 
@@ -345,6 +348,8 @@ exports.keys = function(obj) {
 }
 })();
 (function() {
+'use strict';
+
 var lib = modules["lib"];
 var Obj = modules["object"];
 
@@ -363,7 +368,7 @@ var Frame = Obj.extend({
         var parts = name.split('.');
         var obj = this.variables;
         var frame = this;
-        
+
         if(resolveUp) {
             if((frame = this.resolve(parts[0]))) {
                 frame.set(name, val);
@@ -404,7 +409,7 @@ var Frame = Obj.extend({
     resolve: function(name) {
         var p = this.parent;
         var val = this.variables[name];
-        if(val != null) {
+        if(val !== undefined && val !== null) {
             return this;
         }
         return p && p.resolve(name);
@@ -497,7 +502,7 @@ function numArgs(args) {
 // autoescaped. This happens magically because autoescaping only
 // occurs on primitive string objects.
 function SafeString(val) {
-    if(typeof val != 'string') {
+    if(typeof val !== 'string') {
         return val;
     }
 
@@ -542,9 +547,9 @@ function markSafe(val) {
 }
 
 function suppressValue(val, autoescape) {
-    val = (val !== undefined && val !== null) ? val : "";
+    val = (val !== undefined && val !== null) ? val : '';
 
-    if(autoescape && typeof val === "string") {
+    if(autoescape && typeof val === 'string') {
         val = lib.escape(val);
     }
 
@@ -621,7 +626,7 @@ function asyncAll(arr, dimen, func, cb) {
         finished++;
         outputArr[i] = output;
 
-        if(finished == len) {
+        if(finished === len) {
             cb(null, outputArr.join(''));
         }
     }
@@ -630,7 +635,7 @@ function asyncAll(arr, dimen, func, cb) {
         len = arr.length;
         outputArr = new Array(len);
 
-        if(len == 0) {
+        if(len === 0) {
             cb(null, '');
         }
         else {
@@ -653,7 +658,7 @@ function asyncAll(arr, dimen, func, cb) {
         len = keys.length;
         outputArr = new Array(len);
 
-        if(len == 0) {
+        if(len === 0) {
             cb(null, '');
         }
         else {
@@ -685,6 +690,8 @@ modules['runtime'] = {
 };
 })();
 (function() {
+'use strict';
+
 var path = modules["path"];
 var Obj = modules["object"];
 var lib = modules["lib"];
@@ -708,12 +715,18 @@ var Loader = Obj.extend({
 
     resolve: function(from, to) {
         return path.resolve(path.dirname(from), to);
+    },
+
+    isRelative: function(filename) {
+        return (filename.indexOf('./') === 0 || filename.indexOf('../') === 0);
     }
 });
 
 modules['loader'] = Loader;
 })();
 (function() {
+'use strict';
+
 var Loader = modules["loader"];
 
 var WebLoader = Loader.extend({
@@ -730,7 +743,7 @@ var WebLoader = Loader.extend({
     getSource: function(name) {
         if(this.precompiled[name]) {
             return {
-                src: { type: "code",
+                src: { type: 'code',
                        obj: this.precompiled[name] },
                 path: name
             };
@@ -757,7 +770,7 @@ var WebLoader = Loader.extend({
             ajax = new XMLHttpRequest();
         }
         else if(window.ActiveXObject) { // IE 8 and older
-            ajax = new ActiveXObject("Microsoft.XMLHTTP");
+            ajax = new ActiveXObject('Microsoft.XMLHTTP');
         }
 
         ajax.onreadystatechange = function() {
@@ -784,6 +797,8 @@ modules['web-loaders'] = {
 };
 })();
 (function() {
+'use strict';
+
 if(typeof window === 'undefined' || window !== this) {
     modules['loaders'] = modules["node-loaders"];
 }
@@ -792,6 +807,8 @@ else {
 }
 })();
 (function() {
+'use strict';
+
 var lib = modules["lib"];
 var r = modules["runtime"];
 
@@ -839,8 +856,8 @@ var filters = {
         }
 
         var spaces = width - str.length;
-        var pre = lib.repeat(" ", spaces/2 - spaces % 2);
-        var post = lib.repeat(" ", spaces/2);
+        var pre = lib.repeat(' ', spaces/2 - spaces % 2);
+        var post = lib.repeat(' ', spaces/2);
         return r.copySafeness(str, pre + str + post);
     },
 
@@ -850,7 +867,7 @@ var filters = {
 
     dictsort: function(val, case_sensitive, by) {
         if (!lib.isObject(val)) {
-            throw new lib.TemplateError("dictsort filter: val must be an object");
+            throw new lib.TemplateError('dictsort filter: val must be an object');
         }
 
         var array = [];
@@ -860,13 +877,13 @@ var filters = {
         }
 
         var si;
-        if (by === undefined || by === "key") {
+        if (by === undefined || by === 'key') {
             si = 0;
-        } else if (by === "value") {
+        } else if (by === 'value') {
             si = 1;
         } else {
             throw new lib.TemplateError(
-                "dictsort filter: You can only sort by either key or value");
+                'dictsort filter: You can only sort by either key or value');
         }
 
         array.sort(function(t1, t2) {
@@ -882,14 +899,14 @@ var filters = {
                 }
             }
 
-            return a > b ? 1 : (a == b ? 0 : -1);
+            return a > b ? 1 : (a === b ? 0 : -1);
         });
 
         return array;
     },
 
     escape: function(str) {
-        if(typeof str == 'string' ||
+        if(typeof str === 'string' ||
            str instanceof r.SafeString) {
             return lib.escape(str);
         }
@@ -915,7 +932,7 @@ var filters = {
         var sp = lib.repeat(' ', width);
 
         for(var i=0; i<lines.length; i++) {
-            if(i == 0 && !indentfirst) {
+            if(i === 0 && !indentfirst) {
                 res += lines[i] + '\n';
             }
             else {
@@ -971,7 +988,7 @@ var filters = {
           return val;
         }
         else {
-            throw new lib.TemplateError("list filter: type not iterable");
+            throw new lib.TemplateError('list filter: type not iterable');
         }
     },
 
@@ -1005,7 +1022,7 @@ var filters = {
         var count = 1;
         res = res.replace(old, new_);
 
-        while(last != res) {
+        while(last !== res) {
             if(count >= maxCount) {
                 break;
             }
@@ -1041,10 +1058,10 @@ var filters = {
         var factor = Math.pow(10, precision);
         var rounder;
 
-        if(method == 'ceil') {
+        if(method === 'ceil') {
             rounder = Math.ceil;
         }
-        else if(method == 'floor') {
+        else if(method === 'floor') {
             rounder = Math.floor;
         }
         else {
@@ -1247,6 +1264,7 @@ filters.e = filters.escape;
 modules['filters'] = filters;
 })();
 (function() {
+'use strict';
 
 function cycler(items) {
     var index = -1;
@@ -1315,6 +1333,8 @@ var globals = {
 modules['globals'] = globals;
 })();
 (function() {
+'use strict';
+
 var path = modules["path"];
 var lib = modules["lib"];
 var Obj = modules["object"];
@@ -1373,17 +1393,15 @@ var Environment = Obj.extend({
 
     initCache: function() {
         // Caching and cache busting
-        var cache = {};
-
         lib.each(this.loaders, function(loader) {
-            if(typeof loader.on === 'function'){
+            loader.cache = {};
+
+            if(typeof loader.on === 'function') {
                 loader.on('update', function(template) {
-                    cache[template] = null;
+                    loader.cache[template] = null;
                 });
             }
         });
-
-        this.cache = cache;
     },
 
     addExtension: function(name, extension) {
@@ -1416,7 +1434,14 @@ var Environment = Obj.extend({
         return this.filters[name];
     },
 
+    resolveTemplate: function(loader, parentName, filename) {
+        var isRelative = (loader.isRelative && parentName)? loader.isRelative(filename) : false;
+        return (isRelative && loader.resolve)? loader.resolve(parentName, filename) : filename;
+    },
+
     getTemplate: function(name, eagerCompile, parentName, cb) {
+        var that = this;
+        var tmpl = null;
         if(name && name.raw) {
             // this fixes autoescape for templates referenced in symbols
             name = name.raw;
@@ -1437,7 +1462,11 @@ var Environment = Obj.extend({
             throw new Error('template names must be a string: ' + name);
         }
 
-        var tmpl = this.cache[name];
+        for (var i = 0; i < this.loaders.length; i++) {
+            var _name = this.resolveTemplate(this.loaders[i], parentName, name);
+            tmpl = this.loaders[i].cache[_name];
+            if (tmpl) break;
+        }
 
         if(tmpl) {
             if(eagerCompile) {
@@ -1456,6 +1485,7 @@ var Environment = Obj.extend({
             lib.asyncIter(this.loaders, function(loader, i, next, done) {
                 function handle(src) {
                     if(src) {
+                        src.loader = loader;
                         done(src);
                     }
                     else {
@@ -1464,10 +1494,7 @@ var Environment = Obj.extend({
                 }
 
                 // Resolve name relative to parentName
-                if (parentName && (name.indexOf("./") == 0 ||
-                                   name.indexOf("../") == 0)) {
-                    name = loader.resolve(parentName, name);
-                }
+                name = that.resolveTemplate(loader, parentName, name);
 
                 if(loader.async) {
                     loader.getSource(name, function(err, src) {
@@ -1493,7 +1520,7 @@ var Environment = Obj.extend({
                                             info.path, eagerCompile);
 
                     if(!info.noCache) {
-                        this.cache[name] = tmpl;
+                        info.loader.cache[name] = tmpl;
                     }
 
                     if(cb) {
@@ -1618,7 +1645,7 @@ var Context = Obj.extend({
         var blk = this.blocks[name][idx + 1];
         var context = this;
 
-        if(idx == -1 || !blk) {
+        if(idx === -1 || !blk) {
             throw new Error('no super block available for "' + name + '"');
         }
 
@@ -1653,8 +1680,8 @@ var Template = Obj.extend({
             this.tmplStr = src;
         }
         else {
-            throw new Error("src must be a string or an object describing " +
-                            "the source");
+            throw new Error('src must be a string or an object describing ' +
+                            'the source');
         }
 
         this.path = path;
@@ -1768,7 +1795,7 @@ var Template = Obj.extend({
         var blocks = {};
 
         for(var k in props) {
-            if(k.slice(0, 2) == 'b_') {
+            if(k.slice(0, 2) === 'b_') {
                 blocks[k.slice(2)] = props[k];
             }
         }
diff --git a/browser/nunjucks-slim.min.js b/browser/nunjucks-slim.min.js
index 8d2e8fe9..43a0228f 100644
--- a/browser/nunjucks-slim.min.js
+++ b/browser/nunjucks-slim.min.js
@@ -1,3 +1,3 @@
-// Browser bundle of nunjucks 1.2.0 (slim, only works with precompiled templates)
+// Browser bundle of nunjucks 1.3.0 (slim, only works with precompiled templates)
 
-(function(){var modules={};(function(){function extend(cls,name,props){var F=function(){};F.prototype=cls.prototype;var prototype=new F;var fnTest=/xyz/.test(function(){xyz})?/\bparent\b/:/.*/;props=props||{};for(var k in props){var src=props[k];var parent=prototype[k];if(typeof parent=="function"&&typeof src=="function"&&fnTest.test(src)){prototype[k]=function(src,parent){return function(){var tmp=this.parent;this.parent=parent;var res=src.apply(this,arguments);this.parent=tmp;return res}}(src,parent)}else{prototype[k]=src}}prototype.typename=name;var new_cls=function(){if(prototype.init){prototype.init.apply(this,arguments)}};new_cls.prototype=prototype;new_cls.prototype.constructor=new_cls;new_cls.extend=function(name,props){if(typeof name=="object"){props=name;name="anonymous"}return extend(new_cls,name,props)};return new_cls}modules["object"]=extend(Object,"Object",{})})();(function(){var ArrayProto=Array.prototype;var ObjProto=Object.prototype;var escapeMap={"&":"&amp;",'"':"&quot;","'":"&#39;","<":"&lt;",">":"&gt;"};var escapeRegex=/[&"'<>]/g;var lookupEscape=function(ch){return escapeMap[ch]};var exports=modules["lib"]={};exports.withPrettyErrors=function(path,withInternals,func){try{return func()}catch(e){if(!e.Update){e=new exports.TemplateError(e)}e.Update(path);if(!withInternals){var old=e;e=new Error(old.message);e.name=old.name}throw e}};exports.TemplateError=function(message,lineno,colno){var err=this;if(message instanceof Error){err=message;message=message.name+": "+message.message}else{if(Error.captureStackTrace){Error.captureStackTrace(err)}}err.name="Template render error";err.message=message;err.lineno=lineno;err.colno=colno;err.firstUpdate=true;err.Update=function(path){var message="("+(path||"unknown path")+")";if(this.firstUpdate){if(this.lineno&&this.colno){message+=" [Line "+this.lineno+", Column "+this.colno+"]"}else if(this.lineno){message+=" [Line "+this.lineno+"]"}}message+="\n ";if(this.firstUpdate){message+=" "}this.message=message+(this.message||"");this.firstUpdate=false;return this};return err};exports.TemplateError.prototype=Error.prototype;exports.escape=function(val){return val.replace(escapeRegex,lookupEscape)};exports.isFunction=function(obj){return ObjProto.toString.call(obj)=="[object Function]"};exports.isArray=Array.isArray||function(obj){return ObjProto.toString.call(obj)=="[object Array]"};exports.isString=function(obj){return ObjProto.toString.call(obj)=="[object String]"};exports.isObject=function(obj){return ObjProto.toString.call(obj)=="[object Object]"};exports.groupBy=function(obj,val){var result={};var iterator=exports.isFunction(val)?val:function(obj){return obj[val]};for(var i=0;i<obj.length;i++){var value=obj[i];var key=iterator(value,i);(result[key]||(result[key]=[])).push(value)}return result};exports.toArray=function(obj){return Array.prototype.slice.call(obj)};exports.without=function(array){var result=[];if(!array){return result}var index=-1,length=array.length,contains=exports.toArray(arguments).slice(1);while(++index<length){if(exports.indexOf(contains,array[index])===-1){result.push(array[index])}}return result};exports.extend=function(obj,obj2){for(var k in obj2){obj[k]=obj2[k]}return obj};exports.repeat=function(char_,n){var str="";for(var i=0;i<n;i++){str+=char_}return str};exports.each=function(obj,func,context){if(obj==null){return}if(ArrayProto.each&&obj.each==ArrayProto.each){obj.forEach(func,context)}else if(obj.length===+obj.length){for(var i=0,l=obj.length;i<l;i++){func.call(context,obj[i],i,obj)}}};exports.map=function(obj,func){var results=[];if(obj==null){return results}if(ArrayProto.map&&obj.map===ArrayProto.map){return obj.map(func)}for(var i=0;i<obj.length;i++){results[results.length]=func(obj[i],i)}if(obj.length===+obj.length){results.length=obj.length}return results};exports.asyncIter=function(arr,iter,cb){var i=-1;function next(){i++;if(i<arr.length){iter(arr[i],i,next,cb)}else{cb()}}next()};exports.asyncFor=function(obj,iter,cb){var keys=exports.keys(obj);var len=keys.length;var i=-1;function next(){i++;var k=keys[i];if(i<len){iter(k,obj[k],i,len,next)}else{cb()}}next()};exports.indexOf=Array.prototype.indexOf?function(arr,searchElement,fromIndex){return Array.prototype.indexOf.call(arr,searchElement,fromIndex)}:function(arr,searchElement,fromIndex){var length=this.length>>>0;fromIndex=+fromIndex||0;if(Math.abs(fromIndex)===Infinity){fromIndex=0}if(fromIndex<0){fromIndex+=length;if(fromIndex<0){fromIndex=0}}for(;fromIndex<length;fromIndex++){if(arr[fromIndex]===searchElement){return fromIndex}}return-1};if(!Array.prototype.map){Array.prototype.map=function(){throw new Error("map is unimplemented for this js engine")}}exports.keys=function(obj){if(Object.prototype.keys){return obj.keys()}else{var keys=[];for(var k in obj){if(obj.hasOwnProperty(k)){keys.push(k)}}return keys}}})();(function(){var lib=modules["lib"];var Obj=modules["object"];var Frame=Obj.extend({init:function(parent){this.variables={};this.parent=parent},set:function(name,val,resolveUp){var parts=name.split(".");var obj=this.variables;var frame=this;if(resolveUp){if(frame=this.resolve(parts[0])){frame.set(name,val);return}frame=this}for(var i=0;i<parts.length-1;i++){var id=parts[i];if(!obj[id]){obj[id]={}}obj=obj[id]}obj[parts[parts.length-1]]=val},get:function(name){var val=this.variables[name];if(val!==undefined&&val!==null){return val}return null},lookup:function(name){var p=this.parent;var val=this.variables[name];if(val!==undefined&&val!==null){return val}return p&&p.lookup(name)},resolve:function(name){var p=this.parent;var val=this.variables[name];if(val!=null){return this}return p&&p.resolve(name)},push:function(){return new Frame(this)},pop:function(){return this.parent}});function makeMacro(argNames,kwargNames,func){return function(){var argCount=numArgs(arguments);var args;var kwargs=getKeywordArgs(arguments);if(argCount>argNames.length){args=Array.prototype.slice.call(arguments,0,argNames.length);var vals=Array.prototype.slice.call(arguments,args.length,argCount);for(var i=0;i<vals.length;i++){if(i<kwargNames.length){kwargs[kwargNames[i]]=vals[i]}}args.push(kwargs)}else if(argCount<argNames.length){args=Array.prototype.slice.call(arguments,0,argCount);for(var i=argCount;i<argNames.length;i++){var arg=argNames[i];args.push(kwargs[arg]);delete kwargs[arg]}args.push(kwargs)}else{args=arguments}return func.apply(this,args)}}function makeKeywordArgs(obj){obj.__keywords=true;return obj}function getKeywordArgs(args){var len=args.length;if(len){var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return lastArg}}return{}}function numArgs(args){var len=args.length;if(len===0){return 0}var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return len-1}else{return len}}function SafeString(val){if(typeof val!="string"){return val}this.val=val}SafeString.prototype=Object.create(String.prototype);SafeString.prototype.valueOf=function(){return this.val};SafeString.prototype.toString=function(){return this.val};function copySafeness(dest,target){if(dest instanceof SafeString){return new SafeString(target)}return target.toString()}function markSafe(val){var type=typeof val;if(type==="string"){return new SafeString(val)}else if(type!=="function"){return val}else{return function(){var ret=val.apply(this,arguments);if(typeof ret==="string"){return new SafeString(ret)}return ret}}}function suppressValue(val,autoescape){val=val!==undefined&&val!==null?val:"";if(autoescape&&typeof val==="string"){val=lib.escape(val)}return val}function memberLookup(obj,val){obj=obj||{};if(typeof obj[val]==="function"){return function(){return obj[val].apply(obj,arguments)}}return obj[val]}function callWrap(obj,name,args){if(!obj){throw new Error("Unable to call `"+name+"`, which is undefined or falsey")}else if(typeof 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escapeMap={"&":"&amp;",'"':"&quot;","'":"&#39;","<":"&lt;",">":"&gt;"};var escapeRegex=/[&"'<>]/g;var lookupEscape=function(ch){return escapeMap[ch]};var exports=modules["lib"]={};exports.withPrettyErrors=function(path,withInternals,func){try{return func()}catch(e){if(!e.Update){e=new exports.TemplateError(e)}e.Update(path);if(!withInternals){var old=e;e=new Error(old.message);e.name=old.name}throw e}};exports.TemplateError=function(message,lineno,colno){var err=this;if(message instanceof Error){err=message;message=message.name+": "+message.message}else{if(Error.captureStackTrace){Error.captureStackTrace(err)}}err.name="Template render error";err.message=message;err.lineno=lineno;err.colno=colno;err.firstUpdate=true;err.Update=function(path){var message="("+(path||"unknown path")+")";if(this.firstUpdate){if(this.lineno&&this.colno){message+=" [Line "+this.lineno+", Column "+this.colno+"]"}else if(this.lineno){message+=" [Line "+this.lineno+"]"}}message+="\n 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result}var index=-1,length=array.length,contains=exports.toArray(arguments).slice(1);while(++index<length){if(exports.indexOf(contains,array[index])===-1){result.push(array[index])}}return result};exports.extend=function(obj,obj2){for(var k in obj2){obj[k]=obj2[k]}return obj};exports.repeat=function(char_,n){var str="";for(var i=0;i<n;i++){str+=char_}return str};exports.each=function(obj,func,context){if(obj==null){return}if(ArrayProto.each&&obj.each===ArrayProto.each){obj.forEach(func,context)}else if(obj.length===+obj.length){for(var i=0,l=obj.length;i<l;i++){func.call(context,obj[i],i,obj)}}};exports.map=function(obj,func){var results=[];if(obj==null){return results}if(ArrayProto.map&&obj.map===ArrayProto.map){return obj.map(func)}for(var i=0;i<obj.length;i++){results[results.length]=func(obj[i],i)}if(obj.length===+obj.length){results.length=obj.length}return results};exports.asyncIter=function(arr,iter,cb){var i=-1;function next(){i++;if(i<arr.length){iter(arr[i],i,next,cb)}else{cb()}}next()};exports.asyncFor=function(obj,iter,cb){var keys=exports.keys(obj);var len=keys.length;var i=-1;function next(){i++;var k=keys[i];if(i<len){iter(k,obj[k],i,len,next)}else{cb()}}next()};exports.indexOf=Array.prototype.indexOf?function(arr,searchElement,fromIndex){return Array.prototype.indexOf.call(arr,searchElement,fromIndex)}:function(arr,searchElement,fromIndex){var length=this.length>>>0;fromIndex=+fromIndex||0;if(Math.abs(fromIndex)===Infinity){fromIndex=0}if(fromIndex<0){fromIndex+=length;if(fromIndex<0){fromIndex=0}}for(;fromIndex<length;fromIndex++){if(arr[fromIndex]===searchElement){return fromIndex}}return-1};if(!Array.prototype.map){Array.prototype.map=function(){throw new Error("map is unimplemented for this js engine")}}exports.keys=function(obj){if(Object.prototype.keys){return obj.keys()}else{var keys=[];for(var k in obj){if(obj.hasOwnProperty(k)){keys.push(k)}}return keys}}})();(function(){"use 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args;var kwargs=getKeywordArgs(arguments);if(argCount>argNames.length){args=Array.prototype.slice.call(arguments,0,argNames.length);var vals=Array.prototype.slice.call(arguments,args.length,argCount);for(var i=0;i<vals.length;i++){if(i<kwargNames.length){kwargs[kwargNames[i]]=vals[i]}}args.push(kwargs)}else if(argCount<argNames.length){args=Array.prototype.slice.call(arguments,0,argCount);for(var i=argCount;i<argNames.length;i++){var arg=argNames[i];args.push(kwargs[arg]);delete kwargs[arg]}args.push(kwargs)}else{args=arguments}return func.apply(this,args)}}function makeKeywordArgs(obj){obj.__keywords=true;return obj}function getKeywordArgs(args){var len=args.length;if(len){var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return lastArg}}return{}}function numArgs(args){var len=args.length;if(len===0){return 0}var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return len-1}else{return len}}function SafeString(val){if(typeof val!=="string"){return val}this.val=val}SafeString.prototype=Object.create(String.prototype);SafeString.prototype.valueOf=function(){return this.val};SafeString.prototype.toString=function(){return this.val};function copySafeness(dest,target){if(dest instanceof SafeString){return new SafeString(target)}return target.toString()}function markSafe(val){var type=typeof val;if(type==="string"){return new SafeString(val)}else if(type!=="function"){return val}else{return function(){var ret=val.apply(this,arguments);if(typeof ret==="string"){return new SafeString(ret)}return ret}}}function suppressValue(val,autoescape){val=val!==undefined&&val!==null?val:"";if(autoescape&&typeof val==="string"){val=lib.escape(val)}return val}function memberLookup(obj,val){obj=obj||{};if(typeof obj[val]==="function"){return function(){return obj[val].apply(obj,arguments)}}return obj[val]}function callWrap(obj,name,args){if(!obj){throw new Error("Unable to call `"+name+"`, which is undefined or falsey")}else if(typeof obj!=="function"){throw new Error("Unable to call `"+name+"`, which is not a function")}return obj.apply(this,args)}function contextOrFrameLookup(context,frame,name){var val=frame.lookup(name);return val!==undefined&&val!==null?val:context.lookup(name)}function handleError(error,lineno,colno){if(error.lineno){return error}else{return new lib.TemplateError(error,lineno,colno)}}function asyncEach(arr,dimen,iter,cb){if(lib.isArray(arr)){var len=arr.length;lib.asyncIter(arr,function(item,i,next){switch(dimen){case 1:iter(item,i,len,next);break;case 2:iter(item[0],item[1],i,len,next);break;case 3:iter(item[0],item[1],item[2],i,len,next);break;default:item.push(i,next);iter.apply(this,item)}},cb)}else{lib.asyncFor(arr,function(key,val,i,len,next){iter(key,val,i,len,next)},cb)}}function asyncAll(arr,dimen,func,cb){var finished=0;var len;var outputArr;function 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src=this.fetch(this.baseURL+"/"+name);if(!src){return null}return{src:src,path:name,noCache:!this.neverUpdate}}},fetch:function(url,callback){var ajax;var loading=true;var src;if(window.XMLHttpRequest){ajax=new XMLHttpRequest}else if(window.ActiveXObject){ajax=new ActiveXObject("Microsoft.XMLHTTP")}ajax.onreadystatechange=function(){if(ajax.readyState===4&&(ajax.status===0||ajax.status===200)&&loading){loading=false;src=ajax.responseText}};url+=(url.indexOf("?")===-1?"?":"&")+"s="+(new Date).getTime();ajax.open("GET",url,false);ajax.send();return src}});modules["web-loaders"]={WebLoader:WebLoader}})();(function(){"use strict";if(typeof window==="undefined"||window!==this){modules["loaders"]=modules["node-loaders"]}else{modules["loaders"]=modules["web-loaders"]}})();(function(){"use strict";var lib=modules["lib"];var r=modules["runtime"];var filters={abs:function(n){return Math.abs(n)},batch:function(arr,linecount,fill_with){var res=[];var tmp=[];for(var i=0;i<arr.length;i++){if(i%linecount===0&&tmp.length){res.push(tmp);tmp=[]}tmp.push(arr[i])}if(tmp.length){if(fill_with){for(var i=tmp.length;i<linecount;i++){tmp.push(fill_with)}}res.push(tmp)}return res},capitalize:function(str){var ret=str.toLowerCase();return r.copySafeness(str,ret.charAt(0).toUpperCase()+ret.slice(1))},center:function(str,width){width=width||80;if(str.length>=width){return str}var spaces=width-str.length;var pre=lib.repeat(" ",spaces/2-spaces%2);var post=lib.repeat(" ",spaces/2);return r.copySafeness(str,pre+str+post)},"default":function(val,def){return val?val:def},dictsort:function(val,case_sensitive,by){if(!lib.isObject(val)){throw new lib.TemplateError("dictsort filter: val must be an object")}var array=[];for(var k in val){array.push([k,val[k]])}var si;if(by===undefined||by==="key"){si=0}else if(by==="value"){si=1}else{throw new lib.TemplateError("dictsort filter: You can only sort by either key or value")}array.sort(function(t1,t2){var a=t1[si];var 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keys=[];if(Object.keys){keys=Object.keys(val)}else{for(var k in val){keys.push(k)}}return lib.map(keys,function(k){return{key:k,value:val[k]}})}else if(lib.isArray(val)){return val}else{throw new lib.TemplateError("list filter: type not iterable")}},lower:function(str){return str.toLowerCase()},random:function(arr){return arr[Math.floor(Math.random()*arr.length)]},rejectattr:function(arr,attr){return arr.filter(function(item){return!item[attr]})},selectattr:function(arr,attr){return arr.filter(function(item){return!!item[attr]})},replace:function(str,old,new_,maxCount){if(old instanceof RegExp){return str.replace(old,new_)}var res=str;var last=res;var count=1;res=res.replace(old,new_);while(last!==res){if(count>=maxCount){break}last=res;res=res.replace(old,new_);count++}return r.copySafeness(str,res)},reverse:function(val){var arr;if(lib.isString(val)){arr=filters.list(val)}else{arr=lib.map(val,function(v){return v})}arr.reverse();if(lib.isString(val)){return r.copySafeness(val,arr.join(""))}return arr},round:function(val,precision,method){precision=precision||0;var factor=Math.pow(10,precision);var rounder;if(method==="ceil"){rounder=Math.ceil}else if(method==="floor"){rounder=Math.floor}else{rounder=Math.round}return rounder(val*factor)/factor},slice:function(arr,slices,fillWith){var sliceLength=Math.floor(arr.length/slices);var extra=arr.length%slices;var offset=0;var res=[];for(var i=0;i<slices;i++){var start=offset+i*sliceLength;if(i<extra){offset++}var end=offset+(i+1)*sliceLength;var slice=arr.slice(start,end);if(fillWith&&i>=extra){slice.push(fillWith)}res.push(slice)}return res},sort:function(arr,reverse,caseSens,attr){arr=lib.map(arr,function(v){return v});arr.sort(function(a,b){var x,y;if(attr){x=a[attr];y=b[attr]}else{x=a;y=b}if(!caseSens&&lib.isString(x)&&lib.isString(y)){x=x.toLowerCase();y=y.toLowerCase()}if(x<y){return reverse?1:-1}else if(x>y){return reverse?-1:1}else{return 0}});return arr},string:function(obj){return r.copySafeness(obj,obj)},title:function(str){var words=str.split(" ");for(var i=0;i<words.length;i++){words[i]=filters.capitalize(words[i])}return r.copySafeness(str,words.join(" "))},trim:function(str){return r.copySafeness(str,str.replace(/^\s*|\s*$/g,""))},truncate:function(input,length,killwords,end){var orig=input;length=length||255;if(input.length<=length)return input;if(killwords){input=input.substring(0,length)}else{var idx=input.lastIndexOf(" ",length);if(idx===-1){idx=length}input=input.substring(0,idx)}input+=end!==undefined&&end!==null?end:"...";return r.copySafeness(orig,input)},upper:function(str){return str.toUpperCase()},urlencode:function(obj){var enc=encodeURIComponent;if(lib.isString(obj)){return enc(obj)}else{var parts;if(lib.isArray(obj)){parts=obj.map(function(item){return enc(item[0])+"="+enc(item[1])})}else{parts=[];for(var k in obj){if(obj.hasOwnProperty(k)){parts.push(enc(k)+"="+enc(obj[k]))}}}return 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builtin_filters){this.addFilter(name,builtin_filters[name])}},initCache:function(){lib.each(this.loaders,function(loader){loader.cache={};if(typeof loader.on==="function"){loader.on("update",function(template){loader.cache[template]=null})}})},addExtension:function(name,extension){extension._name=name;this.extensions[name]=extension;this.extensionsList.push(extension)},getExtension:function(name){return this.extensions[name]},addGlobal:function(name,value){globals[name]=value},addFilter:function(name,func,async){var wrapped=func;if(async){this.asyncFilters.push(name)}this.filters[name]=wrapped},getFilter:function(name){if(!this.filters[name]){throw new Error("filter not found: "+name)}return this.filters[name]},resolveTemplate:function(loader,parentName,filename){var isRelative=loader.isRelative&&parentName?loader.isRelative(filename):false;return isRelative&&loader.resolve?loader.resolve(parentName,filename):filename},getTemplate:function(name,eagerCompile,parentName,cb){var that=this;var tmpl=null;if(name&&name.raw){name=name.raw}if(lib.isFunction(parentName)){cb=parentName;parentName=null;eagerCompile=eagerCompile||false}if(lib.isFunction(eagerCompile)){cb=eagerCompile;eagerCompile=false}if(typeof name!=="string"){throw new Error("template names must be a string: "+name)}for(var i=0;i<this.loaders.length;i++){var _name=this.resolveTemplate(this.loaders[i],parentName,name);tmpl=this.loaders[i].cache[_name];if(tmpl)break}if(tmpl){if(eagerCompile){tmpl.compile()}if(cb){cb(null,tmpl)}else{return tmpl}}else{var syncResult;lib.asyncIter(this.loaders,function(loader,i,next,done){function handle(src){if(src){src.loader=loader;done(src)}else{next()}}name=that.resolveTemplate(loader,parentName,name);if(loader.async){loader.getSource(name,function(err,src){if(err){throw err}handle(src)})}else{handle(loader.getSource(name))}},function(info){if(!info){var err=new Error("template not found: "+name);if(cb){cb(err)}else{throw err}}else{var tmpl=new Template(info.src,this,info.path,eagerCompile);if(!info.noCache){info.loader.cache[name]=tmpl}if(cb){cb(null,tmpl)}else{syncResult=tmpl}}}.bind(this));return syncResult}},express:function(app){var env=this;function NunjucksView(name,opts){this.name=name;this.path=name;this.defaultEngine=opts.defaultEngine;this.ext=path.extname(name);if(!this.ext&&!this.defaultEngine)throw new Error("No default engine was specified and no extension was provided.");if(!this.ext)this.name+=this.ext=("."!==this.defaultEngine[0]?".":"")+this.defaultEngine}NunjucksView.prototype.render=function(opts,cb){env.render(this.name,opts,cb)};app.set("view",NunjucksView)},render:function(name,ctx,cb){if(lib.isFunction(ctx)){cb=ctx;ctx=null}var syncResult=null;this.getTemplate(name,function(err,tmpl){if(err&&cb){cb(err)}else if(err){throw err}else{tmpl.render(ctx,cb||function(err,res){if(err){throw err}syncResult=res})}});return syncResult},renderString:function(src,ctx,opts,cb){if(lib.isFunction(opts)){cb=opts;opts={}}opts=opts||{};var tmpl=new Template(src,this,opts.path);return tmpl.render(ctx,cb)}});var Context=Obj.extend({init:function(ctx,blocks){this.ctx=ctx;this.blocks={};this.exported=[];for(var name in blocks){this.addBlock(name,blocks[name])}},lookup:function(name){if(name in globals&&!(name in this.ctx)){return globals[name]}else{return this.ctx[name]}},setVariable:function(name,val){this.ctx[name]=val},getVariables:function(){return this.ctx},addBlock:function(name,block){this.blocks[name]=this.blocks[name]||[];this.blocks[name].push(block)},getBlock:function(name){if(!this.blocks[name]){throw new Error('unknown block "'+name+'"')}return this.blocks[name][0]},getSuper:function(env,name,block,frame,runtime,cb){var idx=lib.indexOf(this.blocks[name]||[],block);var blk=this.blocks[name][idx+1];var context=this;if(idx===-1||!blk){throw new Error('no super block available for "'+name+'"')}blk(env,context,frame,runtime,cb)},addExport:function(name){this.exported.push(name)},getExported:function(){var exported={};for(var i=0;i<this.exported.length;i++){var name=this.exported[i];exported[name]=this.ctx[name]}return exported}});var Template=Obj.extend({init:function(src,env,path,eagerCompile){this.env=env||new Environment;if(lib.isObject(src)){switch(src.type){case"code":this.tmplProps=src.obj;break;case"string":this.tmplStr=src.obj;break}}else if(lib.isString(src)){this.tmplStr=src}else{throw new Error("src must be a string or an object describing "+"the source")}this.path=path;if(eagerCompile){lib.withPrettyErrors(this.path,this.env.dev,this._compile.bind(this))}else{this.compiled=false}},render:function(ctx,frame,cb){if(typeof ctx==="function"){cb=ctx;ctx={}}else if(typeof frame==="function"){cb=frame;frame=null}return lib.withPrettyErrors(this.path,this.env.dev,function(){try{this.compile()}catch(e){if(cb)return cb(e);else throw e}var context=new Context(ctx||{},this.blocks);var syncResult=null;this.rootRenderFunc(this.env,context,frame||new Frame,runtime,cb||function(err,res){if(err){throw err}syncResult=res});return syncResult}.bind(this))},getExported:function(ctx,frame,cb){if(typeof ctx==="function"){cb=ctx;ctx={}}if(typeof frame==="function"){cb=frame;frame=null}try{this.compile()}catch(e){if(cb)return cb(e);else throw e}var context=new Context(ctx||{},this.blocks);this.rootRenderFunc(this.env,context,frame||new Frame,runtime,function(){cb(null,context.getExported())})},compile:function(){if(!this.compiled){this._compile()}},_compile:function(){var props;if(this.tmplProps){props=this.tmplProps}else{var source=compiler.compile(this.tmplStr,this.env.asyncFilters,this.env.extensionsList,this.path,this.env.opts);var func=new Function(source);props=func()}this.blocks=this._getBlocks(props);this.rootRenderFunc=props.root;this.compiled=true},_getBlocks:function(props){var blocks={};for(var k in props){if(k.slice(0,2)==="b_"){blocks[k.slice(2)]=props[k]}}return blocks}});modules["environment"]={Environment:Environment,Template:Template}})();var nunjucks;var lib=modules["lib"];var env=modules["environment"];var compiler=modules["compiler"];var parser=modules["parser"];var lexer=modules["lexer"];var runtime=modules["runtime"];var Loader=modules["loader"];var loaders=modules["loaders"];var precompile=modules["precompile"];nunjucks={};nunjucks.Environment=env.Environment;nunjucks.Template=env.Template;nunjucks.Loader=Loader;nunjucks.FileSystemLoader=loaders.FileSystemLoader;nunjucks.WebLoader=loaders.WebLoader;nunjucks.compiler=compiler;nunjucks.parser=parser;nunjucks.lexer=lexer;nunjucks.runtime=runtime;var e;nunjucks.configure=function(templatesPath,opts){opts=opts||{};if(lib.isObject(templatesPath)){opts=templatesPath;templatesPath=null}var noWatch="watch"in opts?!opts.watch:false;var loader=loaders.FileSystemLoader||loaders.WebLoader;e=new env.Environment(new loader(templatesPath,noWatch),opts);if(opts&&opts.express){e.express(opts.express)}return e};nunjucks.compile=function(src,env,path,eagerCompile){if(!e){nunjucks.configure()}return new nunjucks.Template(src,env,path,eagerCompile)};nunjucks.render=function(name,ctx,cb){if(!e){nunjucks.configure()}return e.render(name,ctx,cb)};nunjucks.renderString=function(src,ctx,cb){if(!e){nunjucks.configure()}return e.renderString(src,ctx,cb)};if(precompile){nunjucks.precompile=precompile.precompile;nunjucks.precompileString=precompile.precompileString}nunjucks.require=function(name){return modules[name]};if(typeof define==="function"&&define.amd){define(function(){return nunjucks})}else{window.nunjucks=nunjucks;if(typeof module!=="undefined")module.exports=nunjucks}})();
\ No newline at end of file
diff --git a/browser/nunjucks.js b/browser/nunjucks.js
index 3ef130f9..b9aa20ef 100644
--- a/browser/nunjucks.js
+++ b/browser/nunjucks.js
@@ -1,8 +1,9 @@
-// Browser bundle of nunjucks 1.2.0 
+// Browser bundle of nunjucks 1.3.0 
 
 (function() {
 var modules = {};
 (function() {
+'use strict';
 
 // A simple class system, more documentation to come
 
@@ -19,8 +20,8 @@ function extend(cls, name, props) {
         var src = props[k];
         var parent = prototype[k];
 
-        if(typeof parent == "function" &&
-           typeof src == "function" &&
+        if(typeof parent === 'function' &&
+           typeof src === 'function' &&
            fnTest.test(src)) {
             prototype[k] = (function (src, parent) {
                 return function() {
@@ -53,9 +54,9 @@ function extend(cls, name, props) {
     new_cls.prototype.constructor = new_cls;
 
     new_cls.extend = function(name, props) {
-        if(typeof name == "object") {
+        if(typeof name === 'object') {
             props = name;
-            name = "anonymous";
+            name = 'anonymous';
         }
         return extend(new_cls, name, props);
     };
@@ -63,18 +64,20 @@ function extend(cls, name, props) {
     return new_cls;
 }
 
-modules['object'] = extend(Object, "Object", {});
+modules['object'] = extend(Object, 'Object', {});
 })();
 (function() {
+'use strict';
+
 var ArrayProto = Array.prototype;
 var ObjProto = Object.prototype;
 
 var escapeMap = {
     '&': '&amp;',
     '"': '&quot;',
-    "'": '&#39;',
-    "<": '&lt;',
-    ">": '&gt;'
+    '\'': '&#39;',
+    '<': '&lt;',
+    '>': '&gt;'
 };
 
 var escapeRegex = /[&"'<>]/g;
@@ -111,7 +114,7 @@ exports.TemplateError = function(message, lineno, colno) {
 
     if (message instanceof Error) { // for casting regular js errors
         err = message;
-        message = message.name + ": " + message.message;
+        message = message.name + ': ' + message.message;
     } else {
         if(Error.captureStackTrace) {
             Error.captureStackTrace(err);
@@ -125,7 +128,7 @@ exports.TemplateError = function(message, lineno, colno) {
     err.firstUpdate = true;
 
     err.Update = function(path) {
-        var message = "(" + (path || "unknown path") + ")";
+        var message = '(' + (path || 'unknown path') + ')';
 
         // only show lineno + colno next to path of template
         // where error occurred
@@ -158,19 +161,19 @@ exports.escape = function(val) {
 };
 
 exports.isFunction = function(obj) {
-    return ObjProto.toString.call(obj) == '[object Function]';
+    return ObjProto.toString.call(obj) === '[object Function]';
 };
 
 exports.isArray = Array.isArray || function(obj) {
-    return ObjProto.toString.call(obj) == '[object Array]';
+    return ObjProto.toString.call(obj) === '[object Array]';
 };
 
 exports.isString = function(obj) {
-    return ObjProto.toString.call(obj) == '[object String]';
+    return ObjProto.toString.call(obj) === '[object String]';
 };
 
 exports.isObject = function(obj) {
-    return ObjProto.toString.call(obj) == '[object Object]';
+    return ObjProto.toString.call(obj) === '[object Object]';
 };
 
 exports.groupBy = function(obj, val) {
@@ -225,7 +228,7 @@ exports.each = function(obj, func, context) {
         return;
     }
 
-    if(ArrayProto.each && obj.each == ArrayProto.each) {
+    if(ArrayProto.each && obj.each === ArrayProto.each) {
         obj.forEach(func, context);
     }
     else if(obj.length === +obj.length) {
@@ -325,7 +328,7 @@ exports.indexOf = Array.prototype.indexOf ?
 
 if(!Array.prototype.map) {
     Array.prototype.map = function() {
-        throw new Error("map is unimplemented for this js engine");
+        throw new Error('map is unimplemented for this js engine');
     };
 }
 
@@ -345,6 +348,8 @@ exports.keys = function(obj) {
 }
 })();
 (function() {
+'use strict';
+
 var util = modules["util"];
 var lib = modules["lib"];
 var Object = modules["object"];
@@ -359,7 +364,7 @@ function traverseAndCheck(obj, type, results) {
     }
 }
 
-var Node = Object.extend("Node", {
+var Node = Object.extend('Node', {
     init: function(lineno, colno) {
         this.lineno = lineno;
         this.colno = colno;
@@ -410,10 +415,10 @@ var Node = Object.extend("Node", {
 });
 
 // Abstract nodes
-var Value = Node.extend("Value", { fields: ['value'] });
+var Value = Node.extend('Value', { fields: ['value'] });
 
 // Concrete nodes
-var NodeList = Node.extend("NodeList", {
+var NodeList = Node.extend('NodeList', {
     fields: ['children'],
 
     init: function(lineno, colno, nodes) {
@@ -425,24 +430,24 @@ var NodeList = Node.extend("NodeList", {
     }
 });
 
-var Root = NodeList.extend("Root");
-var Literal = Value.extend("Literal");
-var Symbol = Value.extend("Symbol");
-var Group = NodeList.extend("Group");
-var Array = NodeList.extend("Array");
-var Pair = Node.extend("Pair", { fields: ['key', 'value'] });
-var Dict = NodeList.extend("Dict");
-var LookupVal = Node.extend("LookupVal", { fields: ['target', 'val'] });
-var If = Node.extend("If", { fields: ['cond', 'body', 'else_'] });
-var IfAsync = If.extend("IfAsync");
-var InlineIf = Node.extend("InlineIf", { fields: ['cond', 'body', 'else_'] });
-var For = Node.extend("For", { fields: ['arr', 'name', 'body', 'else_'] });
-var AsyncEach = For.extend("AsyncEach");
-var AsyncAll = For.extend("AsyncAll");
-var Macro = Node.extend("Macro", { fields: ['name', 'args', 'body'] });
-var Caller = Macro.extend("Caller");
-var Import = Node.extend("Import", { fields: ['template', 'target', 'withContext'] });
-var FromImport = Node.extend("FromImport", {
+var Root = NodeList.extend('Root');
+var Literal = Value.extend('Literal');
+var Symbol = Value.extend('Symbol');
+var Group = NodeList.extend('Group');
+var Array = NodeList.extend('Array');
+var Pair = Node.extend('Pair', { fields: ['key', 'value'] });
+var Dict = NodeList.extend('Dict');
+var LookupVal = Node.extend('LookupVal', { fields: ['target', 'val'] });
+var If = Node.extend('If', { fields: ['cond', 'body', 'else_'] });
+var IfAsync = If.extend('IfAsync');
+var InlineIf = Node.extend('InlineIf', { fields: ['cond', 'body', 'else_'] });
+var For = Node.extend('For', { fields: ['arr', 'name', 'body', 'else_'] });
+var AsyncEach = For.extend('AsyncEach');
+var AsyncAll = For.extend('AsyncAll');
+var Macro = Node.extend('Macro', { fields: ['name', 'args', 'body'] });
+var Caller = Macro.extend('Caller');
+var Import = Node.extend('Import', { fields: ['template', 'target', 'withContext'] });
+var FromImport = Node.extend('FromImport', {
     fields: ['template', 'names', 'withContext'],
 
     init: function(lineno, colno, template, names, withContext) {
@@ -451,41 +456,41 @@ var FromImport = Node.extend("FromImport", {
                     names || new NodeList(), withContext);
     }
 });
-var FunCall = Node.extend("FunCall", { fields: ['name', 'args'] });
-var Filter = FunCall.extend("Filter");
-var FilterAsync = Filter.extend("FilterAsync", {
+var FunCall = Node.extend('FunCall', { fields: ['name', 'args'] });
+var Filter = FunCall.extend('Filter');
+var FilterAsync = Filter.extend('FilterAsync', {
     fields: ['name', 'args', 'symbol']
 });
-var KeywordArgs = Dict.extend("KeywordArgs");
-var Block = Node.extend("Block", { fields: ['name', 'body'] });
-var Super = Node.extend("Super", { fields: ['blockName', 'symbol'] });
-var TemplateRef = Node.extend("TemplateRef", { fields: ['template'] });
-var Extends = TemplateRef.extend("Extends");
-var Include = TemplateRef.extend("Include");
-var Set = Node.extend("Set", { fields: ['targets', 'value'] });
-var Output = NodeList.extend("Output");
-var TemplateData = Literal.extend("TemplateData");
-var UnaryOp = Node.extend("UnaryOp", { fields: ['target'] });
-var BinOp = Node.extend("BinOp", { fields: ['left', 'right'] });
-var In = BinOp.extend("In");
-var Or = BinOp.extend("Or");
-var And = BinOp.extend("And");
-var Not = UnaryOp.extend("Not");
-var Add = BinOp.extend("Add");
-var Sub = BinOp.extend("Sub");
-var Mul = BinOp.extend("Mul");
-var Div = BinOp.extend("Div");
-var FloorDiv = BinOp.extend("FloorDiv");
-var Mod = BinOp.extend("Mod");
-var Pow = BinOp.extend("Pow");
-var Neg = UnaryOp.extend("Neg");
-var Pos = UnaryOp.extend("Pos");
-var Compare = Node.extend("Compare", { fields: ['expr', 'ops'] });
-var CompareOperand = Node.extend("CompareOperand", {
+var KeywordArgs = Dict.extend('KeywordArgs');
+var Block = Node.extend('Block', { fields: ['name', 'body'] });
+var Super = Node.extend('Super', { fields: ['blockName', 'symbol'] });
+var TemplateRef = Node.extend('TemplateRef', { fields: ['template'] });
+var Extends = TemplateRef.extend('Extends');
+var Include = TemplateRef.extend('Include');
+var Set = Node.extend('Set', { fields: ['targets', 'value'] });
+var Output = NodeList.extend('Output');
+var TemplateData = Literal.extend('TemplateData');
+var UnaryOp = Node.extend('UnaryOp', { fields: ['target'] });
+var BinOp = Node.extend('BinOp', { fields: ['left', 'right'] });
+var In = BinOp.extend('In');
+var Or = BinOp.extend('Or');
+var And = BinOp.extend('And');
+var Not = UnaryOp.extend('Not');
+var Add = BinOp.extend('Add');
+var Sub = BinOp.extend('Sub');
+var Mul = BinOp.extend('Mul');
+var Div = BinOp.extend('Div');
+var FloorDiv = BinOp.extend('FloorDiv');
+var Mod = BinOp.extend('Mod');
+var Pow = BinOp.extend('Pow');
+var Neg = UnaryOp.extend('Neg');
+var Pos = UnaryOp.extend('Pos');
+var Compare = Node.extend('Compare', { fields: ['expr', 'ops'] });
+var CompareOperand = Node.extend('CompareOperand', {
     fields: ['expr', 'type']
 });
 
-var CustomTag = Node.extend("CustomTag", {
+var CustomTag = Node.extend('CustomTag', {
     init: function(lineno, colno, name) {
         this.lineno = lineno;
         this.colno = colno;
@@ -493,7 +498,7 @@ var CustomTag = Node.extend("CustomTag", {
     }
 });
 
-var CallExtension = Node.extend("CallExtension", {
+var CallExtension = Node.extend('CallExtension', {
     fields: ['extName', 'prop', 'args', 'contentArgs'],
 
     init: function(ext, prop, args, contentArgs) {
@@ -505,7 +510,7 @@ var CallExtension = Node.extend("CallExtension", {
     }
 });
 
-var CallExtensionAsync = CallExtension.extend("CallExtensionAsync");
+var CallExtensionAsync = CallExtension.extend('CallExtensionAsync');
 
 // Print the AST in a nicely formatted tree format for debuggin
 function printNodes(node, indent) {
@@ -513,13 +518,13 @@ function printNodes(node, indent) {
 
     // This is hacky, but this is just a debugging function anyway
     function print(str, indent, inline) {
-        var lines = str.split("\n");
+        var lines = str.split('\n');
 
         for(var i=0; i<lines.length; i++) {
             if(lines[i]) {
                 if((inline && i > 0) || !inline) {
                     for(var j=0; j<indent; j++) {
-                        util.print(" ");
+                        util.print(' ');
                     }
                 }
             }
@@ -533,7 +538,7 @@ function printNodes(node, indent) {
         }
     }
 
-    print(node.typename + ": ", indent);
+    print(node.typename + ': ', indent);
 
     if(node instanceof NodeList) {
         print('\n');
@@ -651,6 +656,8 @@ modules['nodes'] = {
 };
 })();
 (function() {
+'use strict';
+
 var lib = modules["lib"];
 var Obj = modules["object"];
 
@@ -669,7 +676,7 @@ var Frame = Obj.extend({
         var parts = name.split('.');
         var obj = this.variables;
         var frame = this;
-        
+
         if(resolveUp) {
             if((frame = this.resolve(parts[0]))) {
                 frame.set(name, val);
@@ -710,7 +717,7 @@ var Frame = Obj.extend({
     resolve: function(name) {
         var p = this.parent;
         var val = this.variables[name];
-        if(val != null) {
+        if(val !== undefined && val !== null) {
             return this;
         }
         return p && p.resolve(name);
@@ -803,7 +810,7 @@ function numArgs(args) {
 // autoescaped. This happens magically because autoescaping only
 // occurs on primitive string objects.
 function SafeString(val) {
-    if(typeof val != 'string') {
+    if(typeof val !== 'string') {
         return val;
     }
 
@@ -848,9 +855,9 @@ function markSafe(val) {
 }
 
 function suppressValue(val, autoescape) {
-    val = (val !== undefined && val !== null) ? val : "";
+    val = (val !== undefined && val !== null) ? val : '';
 
-    if(autoescape && typeof val === "string") {
+    if(autoescape && typeof val === 'string') {
         val = lib.escape(val);
     }
 
@@ -927,7 +934,7 @@ function asyncAll(arr, dimen, func, cb) {
         finished++;
         outputArr[i] = output;
 
-        if(finished == len) {
+        if(finished === len) {
             cb(null, outputArr.join(''));
         }
     }
@@ -936,7 +943,7 @@ function asyncAll(arr, dimen, func, cb) {
         len = arr.length;
         outputArr = new Array(len);
 
-        if(len == 0) {
+        if(len === 0) {
             cb(null, '');
         }
         else {
@@ -959,7 +966,7 @@ function asyncAll(arr, dimen, func, cb) {
         len = keys.length;
         outputArr = new Array(len);
 
-        if(len == 0) {
+        if(len === 0) {
             cb(null, '');
         }
         else {
@@ -991,43 +998,45 @@ modules['runtime'] = {
 };
 })();
 (function() {
+'use strict';
+
 var lib = modules["lib"];
 
-var whitespaceChars = " \n\t\r\u00A0";
-var delimChars = "()[]{}%*-+/#,:|.<>=!";
-var intChars = "0123456789";
-
-var BLOCK_START = "{%";
-var BLOCK_END = "%}";
-var VARIABLE_START = "{{";
-var VARIABLE_END = "}}";
-var COMMENT_START = "{#";
-var COMMENT_END = "#}";
-
-var TOKEN_STRING = "string";
-var TOKEN_WHITESPACE = "whitespace";
-var TOKEN_DATA = "data";
-var TOKEN_BLOCK_START = "block-start";
-var TOKEN_BLOCK_END = "block-end";
-var TOKEN_VARIABLE_START = "variable-start";
-var TOKEN_VARIABLE_END = "variable-end";
-var TOKEN_COMMENT = "comment";
-var TOKEN_LEFT_PAREN = "left-paren";
-var TOKEN_RIGHT_PAREN = "right-paren";
-var TOKEN_LEFT_BRACKET = "left-bracket";
-var TOKEN_RIGHT_BRACKET = "right-bracket";
-var TOKEN_LEFT_CURLY = "left-curly";
-var TOKEN_RIGHT_CURLY = "right-curly";
-var TOKEN_OPERATOR = "operator";
-var TOKEN_COMMA = "comma";
-var TOKEN_COLON = "colon";
-var TOKEN_PIPE = "pipe";
-var TOKEN_INT = "int";
-var TOKEN_FLOAT = "float";
-var TOKEN_BOOLEAN = "boolean";
-var TOKEN_SYMBOL = "symbol";
-var TOKEN_SPECIAL = "special";
-var TOKEN_REGEX = "regex";
+var whitespaceChars = ' \n\t\r\u00A0';
+var delimChars = '()[]{}%*-+/#,:|.<>=!';
+var intChars = '0123456789';
+
+var BLOCK_START = '{%';
+var BLOCK_END = '%}';
+var VARIABLE_START = '{{';
+var VARIABLE_END = '}}';
+var COMMENT_START = '{#';
+var COMMENT_END = '#}';
+
+var TOKEN_STRING = 'string';
+var TOKEN_WHITESPACE = 'whitespace';
+var TOKEN_DATA = 'data';
+var TOKEN_BLOCK_START = 'block-start';
+var TOKEN_BLOCK_END = 'block-end';
+var TOKEN_VARIABLE_START = 'variable-start';
+var TOKEN_VARIABLE_END = 'variable-end';
+var TOKEN_COMMENT = 'comment';
+var TOKEN_LEFT_PAREN = 'left-paren';
+var TOKEN_RIGHT_PAREN = 'right-paren';
+var TOKEN_LEFT_BRACKET = 'left-bracket';
+var TOKEN_RIGHT_BRACKET = 'right-bracket';
+var TOKEN_LEFT_CURLY = 'left-curly';
+var TOKEN_RIGHT_CURLY = 'right-curly';
+var TOKEN_OPERATOR = 'operator';
+var TOKEN_COMMA = 'comma';
+var TOKEN_COLON = 'colon';
+var TOKEN_PIPE = 'pipe';
+var TOKEN_INT = 'int';
+var TOKEN_FLOAT = 'float';
+var TOKEN_BOOLEAN = 'boolean';
+var TOKEN_SYMBOL = 'symbol';
+var TOKEN_SPECIAL = 'special';
+var TOKEN_REGEX = 'regex';
 
 function token(type, value, lineno, colno) {
     return {
@@ -1049,7 +1058,7 @@ function Tokenizer(str, opts) {
 
     opts = opts || {};
 
-    tags = opts.tags || {};
+    var tags = opts.tags || {};
     this.tags = {
         BLOCK_START: tags.blockStart || BLOCK_START,
         BLOCK_END: tags.blockEnd || BLOCK_END,
@@ -1076,7 +1085,7 @@ Tokenizer.prototype.nextToken = function() {
             // We have nothing else to parse
             return null;
         }
-        else if(cur == "\"" || cur == "'") {
+        else if(cur === '"' || cur === '\'') {
             // We've hit a string
             return token(TOKEN_STRING, this.parseString(cur), lineno, colno);
         }
@@ -1139,7 +1148,7 @@ Tokenizer.prototype.nextToken = function() {
 
             return token(TOKEN_REGEX, {body: regexBody, flags: regexFlags}, lineno, colno);
         }
-        else if(delimChars.indexOf(cur) != -1) {
+        else if(delimChars.indexOf(cur) !== -1) {
             // We've hit a delimiter (a special char like a bracket)
             this.forward();
             var complexOps = ['==', '!=', '<=', '>=', '//', '**'];
@@ -1152,15 +1161,15 @@ Tokenizer.prototype.nextToken = function() {
             }
 
             switch(cur) {
-            case "(": type = TOKEN_LEFT_PAREN; break;
-            case ")": type = TOKEN_RIGHT_PAREN; break;
-            case "[": type = TOKEN_LEFT_BRACKET; break;
-            case "]": type = TOKEN_RIGHT_BRACKET; break;
-            case "{": type = TOKEN_LEFT_CURLY; break;
-            case "}": type = TOKEN_RIGHT_CURLY; break;
-            case ",": type = TOKEN_COMMA; break;
-            case ":": type = TOKEN_COLON; break;
-            case "|": type = TOKEN_PIPE; break;
+            case '(': type = TOKEN_LEFT_PAREN; break;
+            case ')': type = TOKEN_RIGHT_PAREN; break;
+            case '[': type = TOKEN_LEFT_BRACKET; break;
+            case ']': type = TOKEN_RIGHT_BRACKET; break;
+            case '{': type = TOKEN_LEFT_CURLY; break;
+            case '}': type = TOKEN_RIGHT_CURLY; break;
+            case ',': type = TOKEN_COMMA; break;
+            case ':': type = TOKEN_COLON; break;
+            case '|': type = TOKEN_PIPE; break;
             default: type = TOKEN_OPERATOR;
             }
 
@@ -1172,7 +1181,7 @@ Tokenizer.prototype.nextToken = function() {
             tok = this._extractUntil(whitespaceChars + delimChars);
 
             if(tok.match(/^[-+]?[0-9]+$/)) {
-                if(this.current() == '.') {
+                if(this.current() === '.') {
                     this.forward();
                     var dec = this._extract(intChars);
                     return token(TOKEN_FLOAT, tok + '.' + dec, lineno, colno);
@@ -1188,7 +1197,7 @@ Tokenizer.prototype.nextToken = function() {
                 return token(TOKEN_SYMBOL, tok, lineno, colno);
             }
             else {
-                throw new Error("Unexpected value while parsing: " + tok);
+                throw new Error('Unexpected value while parsing: ' + tok);
             }
         }
     }
@@ -1256,7 +1265,7 @@ Tokenizer.prototype.nextToken = function() {
                 }
                 else if(this._matches(this.tags.COMMENT_END)) {
                     if(!in_comment) {
-                        throw new Error("unexpected end of comment");
+                        throw new Error('unexpected end of comment');
                     }
                     tok += this._extractString(this.tags.COMMENT_END);
                     break;
@@ -1270,7 +1279,7 @@ Tokenizer.prototype.nextToken = function() {
             }
 
             if(data === null && in_comment) {
-                throw new Error("expected end of comment, got end of file");
+                throw new Error('expected end of comment, got end of file');
             }
 
             return token(in_comment ? TOKEN_COMMENT : TOKEN_DATA,
@@ -1280,7 +1289,7 @@ Tokenizer.prototype.nextToken = function() {
         }
     }
 
-    throw new Error("Could not parse text");
+    throw new Error('Could not parse text');
 };
 
 Tokenizer.prototype.parseString = function(delimiter) {
@@ -1288,17 +1297,17 @@ Tokenizer.prototype.parseString = function(delimiter) {
 
     var lineno = this.lineno;
     var colno = this.colno;
-    var str = "";
+    var str = '';
 
-    while(!this.is_finished() && this.current() != delimiter) {
+    while(!this.is_finished() && this.current() !== delimiter) {
         var cur = this.current();
 
-        if(cur == "\\") {
+        if(cur === '\\') {
             this.forward();
             switch(this.current()) {
-            case "n": str += "\n"; break;
-            case "t": str += "\t"; break;
-            case "r": str += "\r"; break;
+            case 'n': str += '\n'; break;
+            case 't': str += '\t'; break;
+            case 'r': str += '\r'; break;
             default:
                 str += this.current();
             }
@@ -1320,7 +1329,7 @@ Tokenizer.prototype._matches = function(str) {
     }
 
     var m = this.str.slice(this.index, this.index + str.length);
-    return m == str;
+    return m === str;
 };
 
 Tokenizer.prototype._extractString = function(str) {
@@ -1334,7 +1343,7 @@ Tokenizer.prototype._extractString = function(str) {
 Tokenizer.prototype._extractUntil = function(charString) {
     // Extract all non-matching chars, with the default matching set
     // to everything
-    return this._extractMatching(true, charString || "");
+    return this._extractMatching(true, charString || '');
 };
 
 Tokenizer.prototype._extract = function(charString) {
@@ -1355,8 +1364,8 @@ Tokenizer.prototype._extractMatching = function (breakOnMatch, charString) {
     var first = charString.indexOf(this.current());
 
     // Only proceed if the first character doesn't meet our condition
-    if((breakOnMatch && first == -1) ||
-       (!breakOnMatch && first != -1)) {
+    if((breakOnMatch && first === -1) ||
+       (!breakOnMatch && first !== -1)) {
         var t = this.current();
         this.forward();
 
@@ -1364,8 +1373,8 @@ Tokenizer.prototype._extractMatching = function (breakOnMatch, charString) {
         // breaking char
         var idx = charString.indexOf(this.current());
 
-        while(((breakOnMatch && idx == -1) ||
-               (!breakOnMatch && idx != -1)) && !this.is_finished()) {
+        while(((breakOnMatch && idx === -1) ||
+               (!breakOnMatch && idx !== -1)) && !this.is_finished()) {
             t += this.current();
             this.forward();
 
@@ -1375,7 +1384,7 @@ Tokenizer.prototype._extractMatching = function (breakOnMatch, charString) {
         return t;
     }
 
-    return "";
+    return '';
 };
 
 Tokenizer.prototype.is_finished = function() {
@@ -1391,7 +1400,7 @@ Tokenizer.prototype.forwardN = function(n) {
 Tokenizer.prototype.forward = function() {
     this.index++;
 
-    if(this.previous() == "\n") {
+    if(this.previous() === '\n') {
         this.lineno++;
         this.colno = 0;
     }
@@ -1403,11 +1412,11 @@ Tokenizer.prototype.forward = function() {
 Tokenizer.prototype.back = function() {
     this.index--;
 
-    if(this.current() == "\n") {
+    if(this.current() === '\n') {
         this.lineno--;
 
-        var idx = this.src.lastIndexOf("\n", this.index-1);
-        if(idx == -1) {
+        var idx = this.src.lastIndexOf('\n', this.index-1);
+        if(idx === -1) {
             this.colno = this.index;
         }
         else {
@@ -1423,7 +1432,7 @@ Tokenizer.prototype.current = function() {
     if(!this.is_finished()) {
         return this.str.charAt(this.index);
     }
-    return "";
+    return '';
 };
 
 Tokenizer.prototype.previous = function() {
@@ -1462,6 +1471,8 @@ modules['lexer'] = {
 };
 })();
 (function() {
+'use strict';
+
 var lexer = modules["lexer"];
 var nodes = modules["nodes"];
 var Object = modules["object"];
@@ -1481,7 +1492,7 @@ var Parser = Object.extend({
         var tok;
 
         if(this.peeked) {
-            if(!withWhitespace && this.peeked.type == lexer.TOKEN_WHITESPACE) {
+            if(!withWhitespace && this.peeked.type === lexer.TOKEN_WHITESPACE) {
                 this.peeked = null;
             }
             else {
@@ -1494,7 +1505,7 @@ var Parser = Object.extend({
         tok = this.tokens.nextToken();
 
         if(!withWhitespace) {
-            while(tok && tok.type == lexer.TOKEN_WHITESPACE) {
+            while(tok && tok.type === lexer.TOKEN_WHITESPACE) {
                 tok = this.tokens.nextToken();
             }
         }
@@ -1509,7 +1520,7 @@ var Parser = Object.extend({
 
     pushToken: function(tok) {
         if(this.peeked) {
-            throw new Error("pushToken: can only push one token on between reads");
+            throw new Error('pushToken: can only push one token on between reads');
         }
         this.peeked = tok;
     },
@@ -1528,7 +1539,7 @@ var Parser = Object.extend({
 
     skip: function(type) {
         var tok = this.nextToken();
-        if(!tok || tok.type != type) {
+        if(!tok || tok.type !== type) {
             this.pushToken(tok);
             return false;
         }
@@ -1547,7 +1558,7 @@ var Parser = Object.extend({
 
     skipValue: function(type, val) {
         var tok = this.nextToken();
-        if(!tok || tok.type != type || tok.value != val) {
+        if(!tok || tok.type !== type || tok.value !== val) {
             this.pushToken(tok);
             return false;
         }
@@ -1570,9 +1581,9 @@ var Parser = Object.extend({
                 this.fail('unexpected end of file');
             }
 
-            if(tok.type != lexer.TOKEN_SYMBOL) {
-                this.fail("advanceAfterBlockEnd: expected symbol token or " +
-                          "explicit name to be passed");
+            if(tok.type !== lexer.TOKEN_SYMBOL) {
+                this.fail('advanceAfterBlockEnd: expected symbol token or ' +
+                          'explicit name to be passed');
             }
 
             name = this.nextToken().value;
@@ -1580,19 +1591,19 @@ var Parser = Object.extend({
 
         var tok = this.nextToken();
 
-        if(tok && tok.type == lexer.TOKEN_BLOCK_END) {
+        if(tok && tok.type === lexer.TOKEN_BLOCK_END) {
             if(tok.value.charAt(0) === '-') {
                 this.dropLeadingWhitespace = true;
             }
         }
         else {
-            this.fail("expected block end in " + name + " statement");
+            this.fail('expected block end in ' + name + ' statement');
         }
     },
 
     advanceAfterVariableEnd: function() {
         if(!this.skip(lexer.TOKEN_VARIABLE_END)) {
-            this.fail("expected variable end");
+            this.fail('expected variable end');
         }
     },
 
@@ -1614,7 +1625,7 @@ var Parser = Object.extend({
             endBlock = 'endall';
         }
         else {
-            this.fail("parseFor: expected for{Async}", forTok.lineno, forTok.colno);
+            this.fail('parseFor: expected for{Async}', forTok.lineno, forTok.colno);
         }
 
         node.name = this.parsePrimary();
@@ -1624,7 +1635,7 @@ var Parser = Object.extend({
         }
 
         var type = this.peekToken().type;
-        if(type == lexer.TOKEN_COMMA) {
+        if(type === lexer.TOKEN_COMMA) {
             // key/value iteration
             var key = node.name;
             node.name = new nodes.Array(key.lineno, key.colno);
@@ -1660,7 +1671,7 @@ var Parser = Object.extend({
     parseMacro: function() {
         var macroTok = this.peekToken();
         if(!this.skipSymbol('macro')) {
-            this.fail("expected macro");
+            this.fail('expected macro');
         }
 
         var name = this.parsePrimary(true);
@@ -1682,7 +1693,7 @@ var Parser = Object.extend({
         // 'caller' kwarg which is a Caller node.
         var callTok = this.peekToken();
         if(!this.skipSymbol('call')) {
-            this.fail("expected call");
+            this.fail('expected call');
         }
 
         var callerArgs = this.parseSignature(true) || new nodes.NodeList();
@@ -1743,7 +1754,7 @@ var Parser = Object.extend({
     parseImport: function() {
         var importTok = this.peekToken();
         if(!this.skipSymbol('import')) {
-            this.fail("parseImport: expected import",
+            this.fail('parseImport: expected import',
                       importTok.lineno,
                       importTok.colno);
         }
@@ -1774,13 +1785,13 @@ var Parser = Object.extend({
     parseFrom: function() {
         var fromTok = this.peekToken();
         if(!this.skipSymbol('from')) {
-            this.fail("parseFrom: expected from");
+            this.fail('parseFrom: expected from');
         }
 
         var template = this.parsePrimary();
 
         if(!this.skipSymbol('import')) {
-            this.fail("parseFrom: expected import",
+            this.fail('parseFrom: expected import',
                             fromTok.lineno,
                             fromTok.colno);
         }
@@ -1790,7 +1801,7 @@ var Parser = Object.extend({
 
         while(1) {
             var nextTok = this.peekToken();
-            if(nextTok.type == lexer.TOKEN_BLOCK_END) {
+            if(nextTok.type === lexer.TOKEN_BLOCK_END) {
                 if(!names.children.length) {
                     this.fail('parseFrom: Expected at least one import name',
                               fromTok.lineno,
@@ -1800,7 +1811,7 @@ var Parser = Object.extend({
                 // Since we are manually advancing past the block end,
                 // need to keep track of whitespace control (normally
                 // this is done in `advanceAfterBlockEnd`
-                if(nextTok.value.charAt(0) == '-') {
+                if(nextTok.value.charAt(0) === '-') {
                     this.dropLeadingWhitespace = true;
                 }
 
@@ -1815,7 +1826,7 @@ var Parser = Object.extend({
             }
 
             var name = this.parsePrimary();
-            if(name.value.charAt(0) == '_') {
+            if(name.value.charAt(0) === '_') {
                 this.fail('parseFrom: names starting with an underscore ' +
                           'cannot be imported',
                           name.lineno,
@@ -1903,7 +1914,7 @@ var Parser = Object.extend({
             node = new nodes.IfAsync(tag.lineno, tag.colno);
         }
         else {
-            this.fail("parseIf: expected if or elif",
+            this.fail('parseIf: expected if or elif',
                       tag.lineno,
                       tag.colno);
         }
@@ -1915,15 +1926,15 @@ var Parser = Object.extend({
         var tok = this.peekToken();
 
         switch(tok && tok.value) {
-        case "elif":
+        case 'elif':
             node.else_ = this.parseIf();
             break;
-        case "else":
+        case 'else':
             this.advanceAfterBlockEnd();
-            node.else_ = this.parseUntilBlocks("endif");
+            node.else_ = this.parseUntilBlocks('endif');
             this.advanceAfterBlockEnd();
             break;
-        case "endif":
+        case 'endif':
             node.else_ = null;
             this.advanceAfterBlockEnd();
             break;
@@ -1968,7 +1979,7 @@ var Parser = Object.extend({
         var tok = this.peekToken();
         var node;
 
-        if(tok.type != lexer.TOKEN_SYMBOL) {
+        if(tok.type !== lexer.TOKEN_SYMBOL) {
             this.fail('tag name expected', tok.lineno, tok.colno);
         }
 
@@ -2020,23 +2031,23 @@ var Parser = Object.extend({
             var tok = this.nextToken(true);
 
             if(!tok) {
-                this.fail("expected endraw, got end of file");
+                this.fail('expected endraw, got end of file');
             }
 
-            if(tok.type == lexer.TOKEN_BLOCK_START) {
+            if(tok.type === lexer.TOKEN_BLOCK_START) {
                 // We need to look for the `endraw` block statement,
                 // which involves a lookahead so carefully keep track
                 // of whitespace
                 var ws = null;
                 var name = this.nextToken(true);
 
-                if(name.type == lexer.TOKEN_WHITESPACE) {
+                if(name.type === lexer.TOKEN_WHITESPACE) {
                     ws = name;
                     name = this.nextToken();
                 }
 
-                if(name.type == lexer.TOKEN_SYMBOL &&
-                   name.value == 'endraw') {
+                if(name.type === lexer.TOKEN_SYMBOL &&
+                   name.value === 'endraw') {
                     this.advanceAfterBlockEnd(name.value);
                     break;
                 }
@@ -2070,14 +2081,14 @@ var Parser = Object.extend({
         var tok = this.peekToken();
 
         while(tok) {
-            if(tok.type == lexer.TOKEN_LEFT_PAREN) {
+            if(tok.type === lexer.TOKEN_LEFT_PAREN) {
                 // Function call
                 node = new nodes.FunCall(tok.lineno,
                                          tok.colno,
                                          node,
                                          this.parseSignature());
             }
-            else if(tok.type == lexer.TOKEN_LEFT_BRACKET) {
+            else if(tok.type === lexer.TOKEN_LEFT_BRACKET) {
                 // Reference
                 var lookup = this.parseAggregate();
                 if(lookup.children.length > 1) {
@@ -2089,12 +2100,12 @@ var Parser = Object.extend({
                                             node,
                                             lookup.children[0]);
             }
-            else if(tok.type == lexer.TOKEN_OPERATOR && tok.value == '.') {
+            else if(tok.type === lexer.TOKEN_OPERATOR && tok.value === '.') {
                 // Reference
                 this.nextToken();
                 var val = this.nextToken();
 
-                if(val.type != lexer.TOKEN_SYMBOL) {
+                if(val.type !== lexer.TOKEN_SYMBOL) {
                     this.fail('expected name as lookup value, got ' + val.value,
                               val.lineno,
                               val.colno);
@@ -2184,7 +2195,7 @@ var Parser = Object.extend({
         // check if the next token is 'not'
         var tok = this.nextToken();
         if (!tok) { break; }
-        var invert = tok.type == lexer.TOKEN_SYMBOL && tok.value == 'not';
+        var invert = tok.type === lexer.TOKEN_SYMBOL && tok.value === 'not';
         // if it wasn't 'not', put it back
         if (!invert) { this.pushToken(tok); }
         if (this.skipSymbol('in')) {
@@ -2359,36 +2370,36 @@ var Parser = Object.extend({
         if(!tok) {
             this.fail('expected expression, got end of file');
         }
-        else if(tok.type == lexer.TOKEN_STRING) {
+        else if(tok.type === lexer.TOKEN_STRING) {
             val = tok.value;
         }
-        else if(tok.type == lexer.TOKEN_INT) {
+        else if(tok.type === lexer.TOKEN_INT) {
             val = parseInt(tok.value, 10);
         }
-        else if(tok.type == lexer.TOKEN_FLOAT) {
+        else if(tok.type === lexer.TOKEN_FLOAT) {
             val = parseFloat(tok.value);
         }
-        else if(tok.type == lexer.TOKEN_BOOLEAN) {
-            if(tok.value == "true") {
+        else if(tok.type === lexer.TOKEN_BOOLEAN) {
+            if(tok.value === 'true') {
                 val = true;
             }
-            else if(tok.value == "false") {
+            else if(tok.value === 'false') {
                 val = false;
             }
             else {
-                this.fail("invalid boolean: " + tok.value,
+                this.fail('invalid boolean: ' + tok.value,
                           tok.lineno,
                           tok.colno);
             }
         }
-        else if (tok.type == lexer.TOKEN_REGEX) {
+        else if (tok.type === lexer.TOKEN_REGEX) {
             val = new RegExp(tok.value.body, tok.value.flags);
         }
 
         if(val !== null) {
             node = new nodes.Literal(tok.lineno, tok.colno, val);
         }
-        else if(tok.type == lexer.TOKEN_SYMBOL) {
+        else if(tok.type === lexer.TOKEN_SYMBOL) {
             node = new nodes.Symbol(tok.lineno, tok.colno, tok.value);
 
             if(!noPostfix) {
@@ -2433,7 +2444,7 @@ var Parser = Object.extend({
                     [node])
             );
 
-            if(this.peekToken().type == lexer.TOKEN_LEFT_PAREN) {
+            if(this.peekToken().type === lexer.TOKEN_LEFT_PAREN) {
                 // Get a FunCall node and add the parameters to the
                 // filter
                 var call = this.parsePostfix(node);
@@ -2461,16 +2472,16 @@ var Parser = Object.extend({
 
         while(1) {
             var type = this.peekToken().type;
-            if(type == lexer.TOKEN_RIGHT_PAREN ||
-               type == lexer.TOKEN_RIGHT_BRACKET ||
-               type == lexer.TOKEN_RIGHT_CURLY) {
+            if(type === lexer.TOKEN_RIGHT_PAREN ||
+               type === lexer.TOKEN_RIGHT_BRACKET ||
+               type === lexer.TOKEN_RIGHT_CURLY) {
                 this.nextToken();
                 break;
             }
 
             if(node.children.length > 0) {
                 if(!this.skip(lexer.TOKEN_COMMA)) {
-                    this.fail("parseAggregate: expected comma after expression",
+                    this.fail('parseAggregate: expected comma after expression',
                               tok.lineno,
                               tok.colno);
                 }
@@ -2483,7 +2494,7 @@ var Parser = Object.extend({
                 // We expect a key/value pair for dicts, separated by a
                 // colon
                 if(!this.skip(lexer.TOKEN_COLON)) {
-                    this.fail("parseAggregate: expected colon after dict key",
+                    this.fail('parseAggregate: expected colon after dict key',
                         tok.lineno,
                         tok.colno);
                 }
@@ -2507,7 +2518,7 @@ var Parser = Object.extend({
 
     parseSignature: function(tolerant, noParens) {
         var tok = this.peekToken();
-        if(!noParens && tok.type != lexer.TOKEN_LEFT_PAREN) {
+        if(!noParens && tok.type !== lexer.TOKEN_LEFT_PAREN) {
             if(tolerant) {
                 return null;
             }
@@ -2516,7 +2527,7 @@ var Parser = Object.extend({
             }
         }
 
-        if(tok.type == lexer.TOKEN_LEFT_PAREN) {
+        if(tok.type === lexer.TOKEN_LEFT_PAREN) {
             tok = this.nextToken();
         }
 
@@ -2527,16 +2538,16 @@ var Parser = Object.extend({
 
         while(1) {
             tok = this.peekToken();
-            if(!noParens && tok.type == lexer.TOKEN_RIGHT_PAREN) {
+            if(!noParens && tok.type === lexer.TOKEN_RIGHT_PAREN) {
                 this.nextToken();
                 break;
             }
-            else if(noParens && tok.type == lexer.TOKEN_BLOCK_END) {
+            else if(noParens && tok.type === lexer.TOKEN_BLOCK_END) {
                 break;
             }
 
             if(checkComma && !this.skip(lexer.TOKEN_COMMA)) {
-                this.fail("parseSignature: expected comma after expression",
+                this.fail('parseSignature: expected comma after expression',
                           tok.lineno,
                           tok.colno);
             }
@@ -2581,7 +2592,7 @@ var Parser = Object.extend({
         var buf = [];
 
         while((tok = this.nextToken())) {
-            if(tok.type == lexer.TOKEN_DATA) {
+            if(tok.type === lexer.TOKEN_DATA) {
                 var data = tok.value;
                 var nextToken = this.peekToken();
                 var nextVal = nextToken && nextToken.value;
@@ -2597,8 +2608,8 @@ var Parser = Object.extend({
 
                 // Same for the succeding block start token
                 if(nextToken &&
-                   nextToken.type == lexer.TOKEN_BLOCK_START &&
-                   nextVal.charAt(nextVal.length - 1) == '-') {
+                   nextToken.type === lexer.TOKEN_BLOCK_START &&
+                   nextVal.charAt(nextVal.length - 1) === '-') {
                     // TODO: this could be optimized (don't use regex)
                     data = data.replace(/\s*$/, '');
                 }
@@ -2609,21 +2620,21 @@ var Parser = Object.extend({
                                                                   tok.colno,
                                                                   data)]));
             }
-            else if(tok.type == lexer.TOKEN_BLOCK_START) {
+            else if(tok.type === lexer.TOKEN_BLOCK_START) {
                 var n = this.parseStatement();
                 if(!n) {
                     break;
                 }
                 buf.push(n);
             }
-            else if(tok.type == lexer.TOKEN_VARIABLE_START) {
+            else if(tok.type === lexer.TOKEN_VARIABLE_START) {
                 var e = this.parseExpression();
                 this.advanceAfterVariableEnd();
                 buf.push(new nodes.Output(tok.lineno, tok.colno, [e]));
             }
-            else if(tok.type != lexer.TOKEN_COMMENT) {
+            else if(tok.type !== lexer.TOKEN_COMMENT) {
                 // Ignore comments, otherwise this should be an error
-                this.fail("Unexpected token at top-level: " +
+                this.fail('Unexpected token at top-level: ' +
                                 tok.type, tok.lineno, tok.colno);
             }
         }
@@ -2663,6 +2674,8 @@ modules['parser'] = {
 };
 })();
 (function() {
+'use strict';
+
 var nodes = modules["nodes"];
 var lib = modules["lib"];
 
@@ -2823,7 +2836,7 @@ function liftSuper(ast) {
 
         blockNode.body = walk(blockNode.body, function(node) {
             if(node instanceof nodes.FunCall &&
-               node.name.value == 'super') {
+               node.name.value === 'super') {
                 hasSuper = true;
                 return new nodes.Symbol(node.lineno, node.colno, symbol);
             }
@@ -2899,6 +2912,8 @@ modules['transformer'] = {
 };
 })();
 (function() {
+'use strict';
+
 var lib = modules["lib"];
 var parser = modules["parser"];
 var transformer = modules["transformer"];
@@ -2959,7 +2974,7 @@ var Compiler = Object.extend({
     },
 
     emitLine: function(code) {
-        this.emit(code + "\n");
+        this.emit(code + '\n');
     },
 
     emitLines: function() {
@@ -3022,6 +3037,10 @@ var Compiler = Object.extend({
         return 't_' + this.lastId;
     },
 
+    _templateName: function() {
+        return this.templateName == null? 'undefined' : JSON.stringify(this.templateName);
+    },
+
     _bufferAppend: function(func) {
         this.emit(this.buffer + ' += runtime.suppressValue(');
         func.call(this);
@@ -3099,7 +3118,7 @@ var Compiler = Object.extend({
         }
 
         if(!success) {
-            this.fail("assertType: invalid type: " + node.typename,
+            this.fail('assertType: invalid type: ' + node.typename,
                       node.lineno,
                       node.colno);
         }
@@ -3135,7 +3154,7 @@ var Compiler = Object.extend({
                 // object as the last argument, if they exist.
                 this._compileExpression(arg, frame);
 
-                if(i != args.children.length - 1 || contentArgs.length) {
+                if(i !== args.children.length - 1 || contentArgs.length) {
                     this.emit(',');
                 }
             }, this);
@@ -3190,12 +3209,12 @@ var Compiler = Object.extend({
     },
 
     compileLiteral: function(node, frame) {
-        if(typeof node.value == "string") {
+        if(typeof node.value === 'string') {
             var val = node.value.replace(/\\/g, '\\\\');
             val = val.replace(/"/g, '\\"');
-            val = val.replace(/\n/g, "\\n");
-            val = val.replace(/\r/g, "\\r");
-            val = val.replace(/\t/g, "\\t");
+            val = val.replace(/\n/g, '\\n');
+            val = val.replace(/\r/g, '\\r');
+            val = val.replace(/\t/g, '\\t');
             this.emit('"' + val  + '"');
         }
         else {
@@ -3236,8 +3255,8 @@ var Compiler = Object.extend({
             key = new nodes.Literal(key.lineno, key.colno, key.value);
         }
         else if(!(key instanceof nodes.Literal &&
-                  typeof key.value == "string")) {
-            this.fail("compilePair: Dict keys must be strings or names",
+                  typeof key.value === 'string')) {
+            this.fail('compilePair: Dict keys must be strings or names',
                       key.lineno,
                       key.colno);
         }
@@ -3406,7 +3425,7 @@ var Compiler = Object.extend({
             var name = target.value;
             var id = frame.lookup(name);
 
-            if (id == null) {
+            if (id === null || id === undefined) {
                 id = this.tmpid();
 
                 // Note: This relies on js allowing scope across
@@ -3431,7 +3450,7 @@ var Compiler = Object.extend({
             // uncommon to assign to multiple vars anyway
             this.emitLine('if(!frame.parent) {');
             this.emitLine('context.setVariable("' + name + '", ' + id + ');');
-            if(name.charAt(0) != '_') {
+            if(name.charAt(0) !== '_') {
                 this.emitLine('context.addExport("' + name + '");');
             }
             this.emitLine('}');
@@ -3766,7 +3785,7 @@ var Compiler = Object.extend({
             this.emitLine('frame.set("' + name + '", ' + funcId + ');');
         }
         else {
-            if(node.name.value.charAt(0) != '_') {
+            if(node.name.value.charAt(0) !== '_') {
                 this.emitLine('context.addExport("' + name + '");');
             }
             this.emitLine('context.setVariable("' + name + '", ' + funcId + ');');
@@ -3786,7 +3805,7 @@ var Compiler = Object.extend({
 
         this.emit('env.getTemplate(');
         this._compileExpression(node.template, frame);
-        this.emitLine(', false, "' + this.templateName + '", ' + this.makeCallback(id));
+        this.emitLine(', false, '+this._templateName()+', ' + this.makeCallback(id));
         this.addScopeLevel();
 
         this.emitLine(id + '.getExported(' +
@@ -3809,7 +3828,7 @@ var Compiler = Object.extend({
 
         this.emit('env.getTemplate(');
         this._compileExpression(node.template, frame);
-        this.emitLine(', false, "' + this.templateName + '", ' + this.makeCallback(importedId));
+        this.emitLine(', false, '+this._templateName()+', ' + this.makeCallback(importedId));
         this.addScopeLevel();
 
         this.emitLine(importedId + '.getExported(' +
@@ -3884,7 +3903,7 @@ var Compiler = Object.extend({
 
         this.emit('env.getTemplate(');
         this._compileExpression(node.template, frame);
-        this.emitLine(', true, "' + this.templateName + '", ' + this.makeCallback('parentTemplate'));
+        this.emitLine(', true, '+this._templateName()+', ' + this.makeCallback('parentTemplate'));
 
         this.emitLine('for(var ' + k + ' in parentTemplate.blocks) {');
         this.emitLine('context.addBlock(' + k +
@@ -3901,7 +3920,7 @@ var Compiler = Object.extend({
 
         this.emit('env.getTemplate(');
         this._compileExpression(node.template, frame);
-        this.emitLine(', false, "' + this.templateName + '", '+ this.makeCallback(id));
+        this.emitLine(', false, '+this._templateName()+', '+ this.makeCallback(id));
         this.addScopeLevel();
 
         this.emitLine(id + '.render(' +
@@ -3936,7 +3955,7 @@ var Compiler = Object.extend({
 
     compileRoot: function(node, frame) {
         if(frame) {
-            this.fail("compileRoot: root node can't have frame");
+            this.fail('compileRoot: root node can\'t have frame');
         }
 
         frame = new Frame();
@@ -3973,12 +3992,12 @@ var Compiler = Object.extend({
     },
 
     compile: function (node, frame) {
-        var _compile = this["compile" + node.typename];
+        var _compile = this['compile' + node.typename];
         if(_compile) {
             _compile.call(this, node, frame);
         }
         else {
-            this.fail("compile: Cannot compile node: " + node.typename,
+            this.fail('compile: Cannot compile node: ' + node.typename,
                       node.lineno,
                       node.colno);
         }
@@ -4022,6 +4041,8 @@ modules['compiler'] = {
 };
 })();
 (function() {
+'use strict';
+
 var lib = modules["lib"];
 var r = modules["runtime"];
 
@@ -4069,8 +4090,8 @@ var filters = {
         }
 
         var spaces = width - str.length;
-        var pre = lib.repeat(" ", spaces/2 - spaces % 2);
-        var post = lib.repeat(" ", spaces/2);
+        var pre = lib.repeat(' ', spaces/2 - spaces % 2);
+        var post = lib.repeat(' ', spaces/2);
         return r.copySafeness(str, pre + str + post);
     },
 
@@ -4080,7 +4101,7 @@ var filters = {
 
     dictsort: function(val, case_sensitive, by) {
         if (!lib.isObject(val)) {
-            throw new lib.TemplateError("dictsort filter: val must be an object");
+            throw new lib.TemplateError('dictsort filter: val must be an object');
         }
 
         var array = [];
@@ -4090,13 +4111,13 @@ var filters = {
         }
 
         var si;
-        if (by === undefined || by === "key") {
+        if (by === undefined || by === 'key') {
             si = 0;
-        } else if (by === "value") {
+        } else if (by === 'value') {
             si = 1;
         } else {
             throw new lib.TemplateError(
-                "dictsort filter: You can only sort by either key or value");
+                'dictsort filter: You can only sort by either key or value');
         }
 
         array.sort(function(t1, t2) {
@@ -4112,14 +4133,14 @@ var filters = {
                 }
             }
 
-            return a > b ? 1 : (a == b ? 0 : -1);
+            return a > b ? 1 : (a === b ? 0 : -1);
         });
 
         return array;
     },
 
     escape: function(str) {
-        if(typeof str == 'string' ||
+        if(typeof str === 'string' ||
            str instanceof r.SafeString) {
             return lib.escape(str);
         }
@@ -4145,7 +4166,7 @@ var filters = {
         var sp = lib.repeat(' ', width);
 
         for(var i=0; i<lines.length; i++) {
-            if(i == 0 && !indentfirst) {
+            if(i === 0 && !indentfirst) {
                 res += lines[i] + '\n';
             }
             else {
@@ -4201,7 +4222,7 @@ var filters = {
           return val;
         }
         else {
-            throw new lib.TemplateError("list filter: type not iterable");
+            throw new lib.TemplateError('list filter: type not iterable');
         }
     },
 
@@ -4235,7 +4256,7 @@ var filters = {
         var count = 1;
         res = res.replace(old, new_);
 
-        while(last != res) {
+        while(last !== res) {
             if(count >= maxCount) {
                 break;
             }
@@ -4271,10 +4292,10 @@ var filters = {
         var factor = Math.pow(10, precision);
         var rounder;
 
-        if(method == 'ceil') {
+        if(method === 'ceil') {
             rounder = Math.ceil;
         }
-        else if(method == 'floor') {
+        else if(method === 'floor') {
             rounder = Math.floor;
         }
         else {
@@ -4477,6 +4498,7 @@ filters.e = filters.escape;
 modules['filters'] = filters;
 })();
 (function() {
+'use strict';
 
 function cycler(items) {
     var index = -1;
@@ -4545,6 +4567,8 @@ var globals = {
 modules['globals'] = globals;
 })();
 (function() {
+'use strict';
+
 var path = modules["path"];
 var Obj = modules["object"];
 var lib = modules["lib"];
@@ -4568,12 +4592,18 @@ var Loader = Obj.extend({
 
     resolve: function(from, to) {
         return path.resolve(path.dirname(from), to);
+    },
+
+    isRelative: function(filename) {
+        return (filename.indexOf('./') === 0 || filename.indexOf('../') === 0);
     }
 });
 
 modules['loader'] = Loader;
 })();
 (function() {
+'use strict';
+
 var Loader = modules["loader"];
 
 var WebLoader = Loader.extend({
@@ -4590,7 +4620,7 @@ var WebLoader = Loader.extend({
     getSource: function(name) {
         if(this.precompiled[name]) {
             return {
-                src: { type: "code",
+                src: { type: 'code',
                        obj: this.precompiled[name] },
                 path: name
             };
@@ -4617,7 +4647,7 @@ var WebLoader = Loader.extend({
             ajax = new XMLHttpRequest();
         }
         else if(window.ActiveXObject) { // IE 8 and older
-            ajax = new ActiveXObject("Microsoft.XMLHTTP");
+            ajax = new ActiveXObject('Microsoft.XMLHTTP');
         }
 
         ajax.onreadystatechange = function() {
@@ -4644,6 +4674,8 @@ modules['web-loaders'] = {
 };
 })();
 (function() {
+'use strict';
+
 if(typeof window === 'undefined' || window !== this) {
     modules['loaders'] = modules["node-loaders"];
 }
@@ -4652,6 +4684,8 @@ else {
 }
 })();
 (function() {
+'use strict';
+
 var path = modules["path"];
 var lib = modules["lib"];
 var Obj = modules["object"];
@@ -4710,17 +4744,15 @@ var Environment = Obj.extend({
 
     initCache: function() {
         // Caching and cache busting
-        var cache = {};
-
         lib.each(this.loaders, function(loader) {
-            if(typeof loader.on === 'function'){
+            loader.cache = {};
+
+            if(typeof loader.on === 'function') {
                 loader.on('update', function(template) {
-                    cache[template] = null;
+                    loader.cache[template] = null;
                 });
             }
         });
-
-        this.cache = cache;
     },
 
     addExtension: function(name, extension) {
@@ -4753,7 +4785,14 @@ var Environment = Obj.extend({
         return this.filters[name];
     },
 
+    resolveTemplate: function(loader, parentName, filename) {
+        var isRelative = (loader.isRelative && parentName)? loader.isRelative(filename) : false;
+        return (isRelative && loader.resolve)? loader.resolve(parentName, filename) : filename;
+    },
+
     getTemplate: function(name, eagerCompile, parentName, cb) {
+        var that = this;
+        var tmpl = null;
         if(name && name.raw) {
             // this fixes autoescape for templates referenced in symbols
             name = name.raw;
@@ -4774,7 +4813,11 @@ var Environment = Obj.extend({
             throw new Error('template names must be a string: ' + name);
         }
 
-        var tmpl = this.cache[name];
+        for (var i = 0; i < this.loaders.length; i++) {
+            var _name = this.resolveTemplate(this.loaders[i], parentName, name);
+            tmpl = this.loaders[i].cache[_name];
+            if (tmpl) break;
+        }
 
         if(tmpl) {
             if(eagerCompile) {
@@ -4793,6 +4836,7 @@ var Environment = Obj.extend({
             lib.asyncIter(this.loaders, function(loader, i, next, done) {
                 function handle(src) {
                     if(src) {
+                        src.loader = loader;
                         done(src);
                     }
                     else {
@@ -4801,10 +4845,7 @@ var Environment = Obj.extend({
                 }
 
                 // Resolve name relative to parentName
-                if (parentName && (name.indexOf("./") == 0 ||
-                                   name.indexOf("../") == 0)) {
-                    name = loader.resolve(parentName, name);
-                }
+                name = that.resolveTemplate(loader, parentName, name);
 
                 if(loader.async) {
                     loader.getSource(name, function(err, src) {
@@ -4830,7 +4871,7 @@ var Environment = Obj.extend({
                                             info.path, eagerCompile);
 
                     if(!info.noCache) {
-                        this.cache[name] = tmpl;
+                        info.loader.cache[name] = tmpl;
                     }
 
                     if(cb) {
@@ -4955,7 +4996,7 @@ var Context = Obj.extend({
         var blk = this.blocks[name][idx + 1];
         var context = this;
 
-        if(idx == -1 || !blk) {
+        if(idx === -1 || !blk) {
             throw new Error('no super block available for "' + name + '"');
         }
 
@@ -4990,8 +5031,8 @@ var Template = Obj.extend({
             this.tmplStr = src;
         }
         else {
-            throw new Error("src must be a string or an object describing " +
-                            "the source");
+            throw new Error('src must be a string or an object describing ' +
+                            'the source');
         }
 
         this.path = path;
@@ -5105,7 +5146,7 @@ var Template = Obj.extend({
         var blocks = {};
 
         for(var k in props) {
-            if(k.slice(0, 2) == 'b_') {
+            if(k.slice(0, 2) === 'b_') {
                 blocks[k.slice(2)] = props[k];
             }
         }
diff --git a/browser/nunjucks.min.js b/browser/nunjucks.min.js
index d55a6b9d..5934fbdd 100644
--- a/browser/nunjucks.min.js
+++ b/browser/nunjucks.min.js
@@ -1,5 +1,5 @@
-// Browser bundle of nunjucks 1.2.0 
+// Browser bundle of nunjucks 1.3.0 
 
-(function(){var modules={};(function(){function extend(cls,name,props){var F=function(){};F.prototype=cls.prototype;var prototype=new F;var fnTest=/xyz/.test(function(){xyz})?/\bparent\b/:/.*/;props=props||{};for(var k in props){var src=props[k];var parent=prototype[k];if(typeof parent=="function"&&typeof src=="function"&&fnTest.test(src)){prototype[k]=function(src,parent){return function(){var tmp=this.parent;this.parent=parent;var res=src.apply(this,arguments);this.parent=tmp;return res}}(src,parent)}else{prototype[k]=src}}prototype.typename=name;var new_cls=function(){if(prototype.init){prototype.init.apply(this,arguments)}};new_cls.prototype=prototype;new_cls.prototype.constructor=new_cls;new_cls.extend=function(name,props){if(typeof name=="object"){props=name;name="anonymous"}return extend(new_cls,name,props)};return new_cls}modules["object"]=extend(Object,"Object",{})})();(function(){var ArrayProto=Array.prototype;var ObjProto=Object.prototype;var escapeMap={"&":"&amp;",'"':"&quot;","'":"&#39;","<":"&lt;",">":"&gt;"};var escapeRegex=/[&"'<>]/g;var lookupEscape=function(ch){return escapeMap[ch]};var exports=modules["lib"]={};exports.withPrettyErrors=function(path,withInternals,func){try{return func()}catch(e){if(!e.Update){e=new exports.TemplateError(e)}e.Update(path);if(!withInternals){var old=e;e=new Error(old.message);e.name=old.name}throw e}};exports.TemplateError=function(message,lineno,colno){var err=this;if(message instanceof Error){err=message;message=message.name+": "+message.message}else{if(Error.captureStackTrace){Error.captureStackTrace(err)}}err.name="Template render error";err.message=message;err.lineno=lineno;err.colno=colno;err.firstUpdate=true;err.Update=function(path){var message="("+(path||"unknown path")+")";if(this.firstUpdate){if(this.lineno&&this.colno){message+=" [Line "+this.lineno+", Column "+this.colno+"]"}else if(this.lineno){message+=" [Line "+this.lineno+"]"}}message+="\n ";if(this.firstUpdate){message+=" "}this.message=message+(this.message||"");this.firstUpdate=false;return this};return err};exports.TemplateError.prototype=Error.prototype;exports.escape=function(val){return val.replace(escapeRegex,lookupEscape)};exports.isFunction=function(obj){return ObjProto.toString.call(obj)=="[object Function]"};exports.isArray=Array.isArray||function(obj){return ObjProto.toString.call(obj)=="[object Array]"};exports.isString=function(obj){return ObjProto.toString.call(obj)=="[object String]"};exports.isObject=function(obj){return ObjProto.toString.call(obj)=="[object Object]"};exports.groupBy=function(obj,val){var result={};var iterator=exports.isFunction(val)?val:function(obj){return obj[val]};for(var i=0;i<obj.length;i++){var value=obj[i];var key=iterator(value,i);(result[key]||(result[key]=[])).push(value)}return result};exports.toArray=function(obj){return Array.prototype.slice.call(obj)};exports.without=function(array){var result=[];if(!array){return result}var index=-1,length=array.length,contains=exports.toArray(arguments).slice(1);while(++index<length){if(exports.indexOf(contains,array[index])===-1){result.push(array[index])}}return result};exports.extend=function(obj,obj2){for(var k in obj2){obj[k]=obj2[k]}return obj};exports.repeat=function(char_,n){var str="";for(var i=0;i<n;i++){str+=char_}return str};exports.each=function(obj,func,context){if(obj==null){return}if(ArrayProto.each&&obj.each==ArrayProto.each){obj.forEach(func,context)}else if(obj.length===+obj.length){for(var i=0,l=obj.length;i<l;i++){func.call(context,obj[i],i,obj)}}};exports.map=function(obj,func){var results=[];if(obj==null){return results}if(ArrayProto.map&&obj.map===ArrayProto.map){return obj.map(func)}for(var i=0;i<obj.length;i++){results[results.length]=func(obj[i],i)}if(obj.length===+obj.length){results.length=obj.length}return results};exports.asyncIter=function(arr,iter,cb){var i=-1;function next(){i++;if(i<arr.length){iter(arr[i],i,next,cb)}else{cb()}}next()};exports.asyncFor=function(obj,iter,cb){var keys=exports.keys(obj);var len=keys.length;var i=-1;function next(){i++;var k=keys[i];if(i<len){iter(k,obj[k],i,len,next)}else{cb()}}next()};exports.indexOf=Array.prototype.indexOf?function(arr,searchElement,fromIndex){return Array.prototype.indexOf.call(arr,searchElement,fromIndex)}:function(arr,searchElement,fromIndex){var length=this.length>>>0;fromIndex=+fromIndex||0;if(Math.abs(fromIndex)===Infinity){fromIndex=0}if(fromIndex<0){fromIndex+=length;if(fromIndex<0){fromIndex=0}}for(;fromIndex<length;fromIndex++){if(arr[fromIndex]===searchElement){return fromIndex}}return-1};if(!Array.prototype.map){Array.prototype.map=function(){throw new Error("map is unimplemented for this js engine")}}exports.keys=function(obj){if(Object.prototype.keys){return obj.keys()}else{var keys=[];for(var k in obj){if(obj.hasOwnProperty(k)){keys.push(k)}}return keys}}})();(function(){var util=modules["util"];var lib=modules["lib"];var Object=modules["object"];function traverseAndCheck(obj,type,results){if(obj instanceof type){results.push(obj)}if(obj instanceof Node){obj.findAll(type,results)}}var Node=Object.extend("Node",{init:function(lineno,colno){this.lineno=lineno;this.colno=colno;var fields=this.fields;for(var i=0,l=fields.length;i<l;i++){var field=fields[i];var val=arguments[i+2];if(val===undefined){val=null}this[field]=val}},findAll:function(type,results){results=results||[];if(this instanceof NodeList){var children=this.children;for(var i=0,l=children.length;i<l;i++){traverseAndCheck(children[i],type,results)}}else{var fields=this.fields;for(var i=0,l=fields.length;i<l;i++){traverseAndCheck(this[fields[i]],type,results)}}return results},iterFields:function(func){lib.each(this.fields,function(field){func(this[field],field)},this)}});var Value=Node.extend("Value",{fields:["value"]});var NodeList=Node.extend("NodeList",{fields:["children"],init:function(lineno,colno,nodes){this.parent(lineno,colno,nodes||[])},addChild:function(node){this.children.push(node)}});var Root=NodeList.extend("Root");var Literal=Value.extend("Literal");var Symbol=Value.extend("Symbol");var Group=NodeList.extend("Group");var Array=NodeList.extend("Array");var Pair=Node.extend("Pair",{fields:["key","value"]});var Dict=NodeList.extend("Dict");var LookupVal=Node.extend("LookupVal",{fields:["target","val"]});var If=Node.extend("If",{fields:["cond","body","else_"]});var IfAsync=If.extend("IfAsync");var InlineIf=Node.extend("InlineIf",{fields:["cond","body","else_"]});var For=Node.extend("For",{fields:["arr","name","body","else_"]});var AsyncEach=For.extend("AsyncEach");var AsyncAll=For.extend("AsyncAll");var Macro=Node.extend("Macro",{fields:["name","args","body"]});var Caller=Macro.extend("Caller");var Import=Node.extend("Import",{fields:["template","target","withContext"]});var FromImport=Node.extend("FromImport",{fields:["template","names","withContext"],init:function(lineno,colno,template,names,withContext){this.parent(lineno,colno,template,names||new NodeList,withContext)}});var FunCall=Node.extend("FunCall",{fields:["name","args"]});var Filter=FunCall.extend("Filter");var FilterAsync=Filter.extend("FilterAsync",{fields:["name","args","symbol"]});var KeywordArgs=Dict.extend("KeywordArgs");var Block=Node.extend("Block",{fields:["name","body"]});var Super=Node.extend("Super",{fields:["blockName","symbol"]});var TemplateRef=Node.extend("TemplateRef",{fields:["template"]});var Extends=TemplateRef.extend("Extends");var Include=TemplateRef.extend("Include");var Set=Node.extend("Set",{fields:["targets","value"]});var Output=NodeList.extend("Output");var TemplateData=Literal.extend("TemplateData");var UnaryOp=Node.extend("UnaryOp",{fields:["target"]});var BinOp=Node.extend("BinOp",{fields:["left","right"]});var In=BinOp.extend("In");var Or=BinOp.extend("Or");var And=BinOp.extend("And");var Not=UnaryOp.extend("Not");var Add=BinOp.extend("Add");var Sub=BinOp.extend("Sub");var Mul=BinOp.extend("Mul");var Div=BinOp.extend("Div");var FloorDiv=BinOp.extend("FloorDiv");var Mod=BinOp.extend("Mod");var Pow=BinOp.extend("Pow");var Neg=UnaryOp.extend("Neg");var Pos=UnaryOp.extend("Pos");var Compare=Node.extend("Compare",{fields:["expr","ops"]});var CompareOperand=Node.extend("CompareOperand",{fields:["expr","type"]});var CustomTag=Node.extend("CustomTag",{init:function(lineno,colno,name){this.lineno=lineno;this.colno=colno;this.name=name}});var CallExtension=Node.extend("CallExtension",{fields:["extName","prop","args","contentArgs"],init:function(ext,prop,args,contentArgs){this.extName=ext._name||ext;this.prop=prop;this.args=args||new NodeList;this.contentArgs=contentArgs||[];this.autoescape=ext.autoescape}});var CallExtensionAsync=CallExtension.extend("CallExtensionAsync");function printNodes(node,indent){indent=indent||0;function print(str,indent,inline){var lines=str.split("\n");for(var i=0;i<lines.length;i++){if(lines[i]){if(inline&&i>0||!inline){for(var j=0;j<indent;j++){util.print(" ")}}}if(i===lines.length-1){util.print(lines[i])}else{util.puts(lines[i])}}}print(node.typename+": ",indent);if(node instanceof NodeList){print("\n");lib.each(node.children,function(n){printNodes(n,indent+2)})}else if(node instanceof CallExtension){print(node.extName+"."+node.prop);print("\n");if(node.args){printNodes(node.args,indent+2)}if(node.contentArgs){lib.each(node.contentArgs,function(n){printNodes(n,indent+2)})}}else{var nodes=null;var props=null;node.iterFields(function(val,field){if(val instanceof Node){nodes=nodes||{};nodes[field]=val}else{props=props||{};props[field]=val}});if(props){print(util.inspect(props,true,null)+"\n",null,true)}else{print("\n")}if(nodes){for(var k in nodes){printNodes(nodes[k],indent+2)}}}}modules["nodes"]={Node:Node,Root:Root,NodeList:NodeList,Value:Value,Literal:Literal,Symbol:Symbol,Group:Group,Array:Array,Pair:Pair,Dict:Dict,Output:Output,TemplateData:TemplateData,If:If,IfAsync:IfAsync,InlineIf:InlineIf,For:For,AsyncEach:AsyncEach,AsyncAll:AsyncAll,Macro:Macro,Caller:Caller,Import:Import,FromImport:FromImport,FunCall:FunCall,Filter:Filter,FilterAsync:FilterAsync,KeywordArgs:KeywordArgs,Block:Block,Super:Super,Extends:Extends,Include:Include,Set:Set,LookupVal:LookupVal,BinOp:BinOp,In:In,Or:Or,And:And,Not:Not,Add:Add,Sub:Sub,Mul:Mul,Div:Div,FloorDiv:FloorDiv,Mod:Mod,Pow:Pow,Neg:Neg,Pos:Pos,Compare:Compare,CompareOperand:CompareOperand,CallExtension:CallExtension,CallExtensionAsync:CallExtensionAsync,printNodes:printNodes}})();(function(){var lib=modules["lib"];var Obj=modules["object"];var Frame=Obj.extend({init:function(parent){this.variables={};this.parent=parent},set:function(name,val,resolveUp){var parts=name.split(".");var obj=this.variables;var frame=this;if(resolveUp){if(frame=this.resolve(parts[0])){frame.set(name,val);return}frame=this}for(var i=0;i<parts.length-1;i++){var id=parts[i];if(!obj[id]){obj[id]={}}obj=obj[id]}obj[parts[parts.length-1]]=val},get:function(name){var val=this.variables[name];if(val!==undefined&&val!==null){return val}return null},lookup:function(name){var p=this.parent;var val=this.variables[name];if(val!==undefined&&val!==null){return val}return p&&p.lookup(name)},resolve:function(name){var p=this.parent;var val=this.variables[name];if(val!=null){return this}return p&&p.resolve(name)},push:function(){return new Frame(this)},pop:function(){return this.parent}});function makeMacro(argNames,kwargNames,func){return function(){var argCount=numArgs(arguments);var args;var kwargs=getKeywordArgs(arguments);if(argCount>argNames.length){args=Array.prototype.slice.call(arguments,0,argNames.length);var vals=Array.prototype.slice.call(arguments,args.length,argCount);for(var i=0;i<vals.length;i++){if(i<kwargNames.length){kwargs[kwargNames[i]]=vals[i]}}args.push(kwargs)}else if(argCount<argNames.length){args=Array.prototype.slice.call(arguments,0,argCount);for(var i=argCount;i<argNames.length;i++){var arg=argNames[i];args.push(kwargs[arg]);delete kwargs[arg]}args.push(kwargs)}else{args=arguments}return func.apply(this,args)}}function makeKeywordArgs(obj){obj.__keywords=true;return obj}function getKeywordArgs(args){var len=args.length;if(len){var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return lastArg}}return{}}function numArgs(args){var len=args.length;if(len===0){return 0}var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return len-1}else{return len}}function SafeString(val){if(typeof val!="string"){return val}this.val=val}SafeString.prototype=Object.create(String.prototype);SafeString.prototype.valueOf=function(){return this.val};SafeString.prototype.toString=function(){return this.val};function copySafeness(dest,target){if(dest instanceof SafeString){return new SafeString(target)}return target.toString()}function markSafe(val){var type=typeof val;if(type==="string"){return new SafeString(val)}else if(type!=="function"){return val}else{return function(){var ret=val.apply(this,arguments);if(typeof ret==="string"){return new SafeString(ret)}return ret}}}function suppressValue(val,autoescape){val=val!==undefined&&val!==null?val:"";if(autoescape&&typeof val==="string"){val=lib.escape(val)}return val}function memberLookup(obj,val){obj=obj||{};if(typeof obj[val]==="function"){return function(){return obj[val].apply(obj,arguments)}}return obj[val]}function callWrap(obj,name,args){if(!obj){throw new Error("Unable to call `"+name+"`, which is undefined or falsey")}else if(typeof obj!=="function"){throw new Error("Unable to call `"+name+"`, which is not a function")}return obj.apply(this,args)}function contextOrFrameLookup(context,frame,name){var val=frame.lookup(name);return val!==undefined&&val!==null?val:context.lookup(name)}function handleError(error,lineno,colno){if(error.lineno){return error}else{return new lib.TemplateError(error,lineno,colno)}}function asyncEach(arr,dimen,iter,cb){if(lib.isArray(arr)){var len=arr.length;lib.asyncIter(arr,function(item,i,next){switch(dimen){case 1:iter(item,i,len,next);break;case 2:iter(item[0],item[1],i,len,next);break;case 3:iter(item[0],item[1],item[2],i,len,next);break;default:item.push(i,next);iter.apply(this,item)}},cb)}else{lib.asyncFor(arr,function(key,val,i,len,next){iter(key,val,i,len,next)},cb)}}function asyncAll(arr,dimen,func,cb){var finished=0;var len;var outputArr;function done(i,output){finished++;outputArr[i]=output;if(finished==len){cb(null,outputArr.join(""))}}if(lib.isArray(arr)){len=arr.length;outputArr=new Array(len);if(len==0){cb(null,"")}else{for(var i=0;i<arr.length;i++){var item=arr[i];switch(dimen){case 1:func(item,i,len,done);break;case 2:func(item[0],item[1],i,len,done);break;case 3:func(item[0],item[1],item[2],i,len,done);break;default:item.push(i,done);func.apply(this,item)}}}}else{var keys=lib.keys(arr);len=keys.length;outputArr=new Array(len);if(len==0){cb(null,"")}else{for(var i=0;i<keys.length;i++){var k=keys[i];func(k,arr[k],i,len,done)}}}}modules["runtime"]={Frame:Frame,makeMacro:makeMacro,makeKeywordArgs:makeKeywordArgs,numArgs:numArgs,suppressValue:suppressValue,memberLookup:memberLookup,contextOrFrameLookup:contextOrFrameLookup,callWrap:callWrap,handleError:handleError,isArray:lib.isArray,keys:lib.keys,SafeString:SafeString,copySafeness:copySafeness,markSafe:markSafe,asyncEach:asyncEach,asyncAll:asyncAll}})();(function(){var lib=modules["lib"];var whitespaceChars=" \n	\r ";var delimChars="()[]{}%*-+/#,:|.<>=!";var intChars="0123456789";var BLOCK_START="{%";var BLOCK_END="%}";var VARIABLE_START="{{";var VARIABLE_END="}}";var COMMENT_START="{#";var COMMENT_END="#}";var TOKEN_STRING="string";var TOKEN_WHITESPACE="whitespace";var TOKEN_DATA="data";var TOKEN_BLOCK_START="block-start";var TOKEN_BLOCK_END="block-end";var TOKEN_VARIABLE_START="variable-start";var TOKEN_VARIABLE_END="variable-end";var TOKEN_COMMENT="comment";var TOKEN_LEFT_PAREN="left-paren";var TOKEN_RIGHT_PAREN="right-paren";var TOKEN_LEFT_BRACKET="left-bracket";var TOKEN_RIGHT_BRACKET="right-bracket";var TOKEN_LEFT_CURLY="left-curly";var TOKEN_RIGHT_CURLY="right-curly";var TOKEN_OPERATOR="operator";var TOKEN_COMMA="comma";var TOKEN_COLON="colon";var TOKEN_PIPE="pipe";var TOKEN_INT="int";var TOKEN_FLOAT="float";var TOKEN_BOOLEAN="boolean";var TOKEN_SYMBOL="symbol";var TOKEN_SPECIAL="special";var TOKEN_REGEX="regex";function token(type,value,lineno,colno){return{type:type,value:value,lineno:lineno,colno:colno}}function Tokenizer(str,opts){this.str=str;this.index=0;this.len=str.length;this.lineno=0;this.colno=0;this.in_code=false;opts=opts||{};tags=opts.tags||{};this.tags={BLOCK_START:tags.blockStart||BLOCK_START,BLOCK_END:tags.blockEnd||BLOCK_END,VARIABLE_START:tags.variableStart||VARIABLE_START,VARIABLE_END:tags.variableEnd||VARIABLE_END,COMMENT_START:tags.commentStart||COMMENT_START,COMMENT_END:tags.commentEnd||COMMENT_END};this.trimBlocks=!!opts.trimBlocks;this.lstripBlocks=!!opts.lstripBlocks}Tokenizer.prototype.nextToken=function(){var lineno=this.lineno;var colno=this.colno;var tok;if(this.in_code){var cur=this.current();if(this.is_finished()){return null}else if(cur=='"'||cur=="'"){return token(TOKEN_STRING,this.parseString(cur),lineno,colno)}else if(tok=this._extract(whitespaceChars)){return token(TOKEN_WHITESPACE,tok,lineno,colno)}else if((tok=this._extractString(this.tags.BLOCK_END))||(tok=this._extractString("-"+this.tags.BLOCK_END))){this.in_code=false;if(this.trimBlocks){cur=this.current();if(cur==="\n"){this.forward()}}return token(TOKEN_BLOCK_END,tok,lineno,colno)}else if(tok=this._extractString(this.tags.VARIABLE_END)){this.in_code=false;return token(TOKEN_VARIABLE_END,tok,lineno,colno)}else if(cur==="r"&&this.str.charAt(this.index+1)==="/"){this.forwardN(2);var regexBody="";while(!this.is_finished()){if(this.current()==="/"&&this.previous()!=="\\"){this.forward();break}else{regexBody+=this.current();this.forward()}}var POSSIBLE_FLAGS=["g","i","m","y"];var regexFlags="";while(!this.is_finished()){var isCurrentAFlag=POSSIBLE_FLAGS.indexOf(this.current())!==-1;if(isCurrentAFlag){regexFlags+=this.current();this.forward()}else{break}}return token(TOKEN_REGEX,{body:regexBody,flags:regexFlags},lineno,colno)}else if(delimChars.indexOf(cur)!=-1){this.forward();var complexOps=["==","!=","<=",">=","//","**"];var curComplex=cur+this.current();var type;if(lib.indexOf(complexOps,curComplex)!==-1){this.forward();cur=curComplex}switch(cur){case"(":type=TOKEN_LEFT_PAREN;break;case")":type=TOKEN_RIGHT_PAREN;break;case"[":type=TOKEN_LEFT_BRACKET;break;case"]":type=TOKEN_RIGHT_BRACKET;break;case"{":type=TOKEN_LEFT_CURLY;break;case"}":type=TOKEN_RIGHT_CURLY;break;case",":type=TOKEN_COMMA;break;case":":type=TOKEN_COLON;break;case"|":type=TOKEN_PIPE;break;default:type=TOKEN_OPERATOR}return token(type,cur,lineno,colno)}else{tok=this._extractUntil(whitespaceChars+delimChars);if(tok.match(/^[-+]?[0-9]+$/)){if(this.current()=="."){this.forward();var dec=this._extract(intChars);return token(TOKEN_FLOAT,tok+"."+dec,lineno,colno)}else{return token(TOKEN_INT,tok,lineno,colno)}}else if(tok.match(/^(true|false)$/)){return token(TOKEN_BOOLEAN,tok,lineno,colno)}else if(tok){return token(TOKEN_SYMBOL,tok,lineno,colno)}else{throw new Error("Unexpected value while parsing: "+tok)}}}else{var beginChars=this.tags.BLOCK_START.charAt(0)+this.tags.VARIABLE_START.charAt(0)+this.tags.COMMENT_START.charAt(0)+this.tags.COMMENT_END.charAt(0);if(this.is_finished()){return null}else if((tok=this._extractString(this.tags.BLOCK_START+"-"))||(tok=this._extractString(this.tags.BLOCK_START))){this.in_code=true;return token(TOKEN_BLOCK_START,tok,lineno,colno)}else if(tok=this._extractString(this.tags.VARIABLE_START)){this.in_code=true;return token(TOKEN_VARIABLE_START,tok,lineno,colno)}else{tok="";var data;var in_comment=false;if(this._matches(this.tags.COMMENT_START)){in_comment=true;tok=this._extractString(this.tags.COMMENT_START)}while((data=this._extractUntil(beginChars))!==null){tok+=data;if((this._matches(this.tags.BLOCK_START)||this._matches(this.tags.VARIABLE_START)||this._matches(this.tags.COMMENT_START))&&!in_comment){if(this.lstripBlocks&&this._matches(this.tags.BLOCK_START)&&this.colno>0&&this.colno<=tok.length){var lastLine=tok.slice(-this.colno);if(/^\s+$/.test(lastLine)){tok=tok.slice(0,-this.colno);if(!tok.length){return this.nextToken()}}}break}else if(this._matches(this.tags.COMMENT_END)){if(!in_comment){throw new Error("unexpected end of comment")}tok+=this._extractString(this.tags.COMMENT_END);break}else{tok+=this.current();this.forward()}}if(data===null&&in_comment){throw new Error("expected end of comment, got end of file")}return token(in_comment?TOKEN_COMMENT:TOKEN_DATA,tok,lineno,colno)}}throw new Error("Could not parse text")};Tokenizer.prototype.parseString=function(delimiter){this.forward();var lineno=this.lineno;var colno=this.colno;var str="";while(!this.is_finished()&&this.current()!=delimiter){var cur=this.current();if(cur=="\\"){this.forward();switch(this.current()){case"n":str+="\n";break;case"t":str+="	";break;case"r":str+="\r";break;default:str+=this.current()}this.forward()}else{str+=cur;this.forward()}}this.forward();return str};Tokenizer.prototype._matches=function(str){if(this.index+str.length>this.len){return null}var m=this.str.slice(this.index,this.index+str.length);return m==str};Tokenizer.prototype._extractString=function(str){if(this._matches(str)){this.index+=str.length;return str}return null};Tokenizer.prototype._extractUntil=function(charString){return this._extractMatching(true,charString||"")};Tokenizer.prototype._extract=function(charString){return this._extractMatching(false,charString)};Tokenizer.prototype._extractMatching=function(breakOnMatch,charString){if(this.is_finished()){return null}var first=charString.indexOf(this.current());if(breakOnMatch&&first==-1||!breakOnMatch&&first!=-1){var t=this.current();this.forward();var idx=charString.indexOf(this.current());while((breakOnMatch&&idx==-1||!breakOnMatch&&idx!=-1)&&!this.is_finished()){t+=this.current();this.forward();idx=charString.indexOf(this.current())}return t}return""};Tokenizer.prototype.is_finished=function(){return this.index>=this.len};Tokenizer.prototype.forwardN=function(n){for(var i=0;i<n;i++){this.forward()}};Tokenizer.prototype.forward=function(){this.index++;if(this.previous()=="\n"){this.lineno++;this.colno=0}else{this.colno++}};Tokenizer.prototype.back=function(){this.index--;if(this.current()=="\n"){this.lineno--;var idx=this.src.lastIndexOf("\n",this.index-1);if(idx==-1){this.colno=this.index}else{this.colno=this.index-idx}}else{this.colno--}};Tokenizer.prototype.current=function(){if(!this.is_finished()){return this.str.charAt(this.index)}return""};Tokenizer.prototype.previous=function(){return this.str.charAt(this.index-1)};modules["lexer"]={lex:function(src,opts){return new Tokenizer(src,opts)},TOKEN_STRING:TOKEN_STRING,TOKEN_WHITESPACE:TOKEN_WHITESPACE,TOKEN_DATA:TOKEN_DATA,TOKEN_BLOCK_START:TOKEN_BLOCK_START,TOKEN_BLOCK_END:TOKEN_BLOCK_END,TOKEN_VARIABLE_START:TOKEN_VARIABLE_START,TOKEN_VARIABLE_END:TOKEN_VARIABLE_END,TOKEN_COMMENT:TOKEN_COMMENT,TOKEN_LEFT_PAREN:TOKEN_LEFT_PAREN,TOKEN_RIGHT_PAREN:TOKEN_RIGHT_PAREN,TOKEN_LEFT_BRACKET:TOKEN_LEFT_BRACKET,TOKEN_RIGHT_BRACKET:TOKEN_RIGHT_BRACKET,TOKEN_LEFT_CURLY:TOKEN_LEFT_CURLY,TOKEN_RIGHT_CURLY:TOKEN_RIGHT_CURLY,TOKEN_OPERATOR:TOKEN_OPERATOR,TOKEN_COMMA:TOKEN_COMMA,TOKEN_COLON:TOKEN_COLON,TOKEN_PIPE:TOKEN_PIPE,TOKEN_INT:TOKEN_INT,TOKEN_FLOAT:TOKEN_FLOAT,TOKEN_BOOLEAN:TOKEN_BOOLEAN,TOKEN_SYMBOL:TOKEN_SYMBOL,TOKEN_SPECIAL:TOKEN_SPECIAL,TOKEN_REGEX:TOKEN_REGEX}})();(function(){var lexer=modules["lexer"];var nodes=modules["nodes"];var Object=modules["object"];var lib=modules["lib"];var Parser=Object.extend({init:function(tokens){this.tokens=tokens;this.peeked=null;this.breakOnBlocks=null;this.dropLeadingWhitespace=false;this.extensions=[]},nextToken:function(withWhitespace){var tok;if(this.peeked){if(!withWhitespace&&this.peeked.type==lexer.TOKEN_WHITESPACE){this.peeked=null}else{tok=this.peeked;this.peeked=null;return tok}}tok=this.tokens.nextToken();if(!withWhitespace){while(tok&&tok.type==lexer.TOKEN_WHITESPACE){tok=this.tokens.nextToken()}}return tok},peekToken:function(){this.peeked=this.peeked||this.nextToken();return this.peeked},pushToken:function(tok){if(this.peeked){throw new Error("pushToken: can only push one token on between reads")}this.peeked=tok},fail:function(msg,lineno,colno){if((lineno===undefined||colno===undefined)&&this.peekToken()){var tok=this.peekToken();lineno=tok.lineno;colno=tok.colno}if(lineno!==undefined)lineno+=1;if(colno!==undefined)colno+=1;throw new lib.TemplateError(msg,lineno,colno)},skip:function(type){var tok=this.nextToken();if(!tok||tok.type!=type){this.pushToken(tok);return false}return true},expect:function(type){var tok=this.nextToken();if(tok.type!==type){this.fail("expected "+type+", got "+tok.type,tok.lineno,tok.colno)}return tok},skipValue:function(type,val){var tok=this.nextToken();if(!tok||tok.type!=type||tok.value!=val){this.pushToken(tok);return false}return true},skipWhitespace:function(){return this.skip(lexer.TOKEN_WHITESPACE)},skipSymbol:function(val){return this.skipValue(lexer.TOKEN_SYMBOL,val)},advanceAfterBlockEnd:function(name){if(!name){var tok=this.peekToken();if(!tok){this.fail("unexpected end of file")}if(tok.type!=lexer.TOKEN_SYMBOL){this.fail("advanceAfterBlockEnd: expected symbol token or "+"explicit name to be passed")}name=this.nextToken().value}var tok=this.nextToken();if(tok&&tok.type==lexer.TOKEN_BLOCK_END){if(tok.value.charAt(0)==="-"){this.dropLeadingWhitespace=true}}else{this.fail("expected block end in "+name+" statement")}},advanceAfterVariableEnd:function(){if(!this.skip(lexer.TOKEN_VARIABLE_END)){this.fail("expected variable end")}},parseFor:function(){var forTok=this.peekToken();var node;var endBlock;if(this.skipSymbol("for")){node=new nodes.For(forTok.lineno,forTok.colno);endBlock="endfor"}else if(this.skipSymbol("asyncEach")){node=new nodes.AsyncEach(forTok.lineno,forTok.colno);endBlock="endeach"}else if(this.skipSymbol("asyncAll")){node=new nodes.AsyncAll(forTok.lineno,forTok.colno);endBlock="endall"}else{this.fail("parseFor: expected for{Async}",forTok.lineno,forTok.colno)}node.name=this.parsePrimary();if(!(node.name instanceof nodes.Symbol)){this.fail("parseFor: variable name expected for loop")}var type=this.peekToken().type;if(type==lexer.TOKEN_COMMA){var key=node.name;node.name=new nodes.Array(key.lineno,key.colno);node.name.addChild(key);while(this.skip(lexer.TOKEN_COMMA)){var prim=this.parsePrimary();node.name.addChild(prim)}}if(!this.skipSymbol("in")){this.fail('parseFor: expected "in" keyword for loop',forTok.lineno,forTok.colno)}node.arr=this.parseExpression();this.advanceAfterBlockEnd(forTok.value);node.body=this.parseUntilBlocks(endBlock,"else");if(this.skipSymbol("else")){this.advanceAfterBlockEnd("else");node.else_=this.parseUntilBlocks(endBlock)}this.advanceAfterBlockEnd();return node},parseMacro:function(){var macroTok=this.peekToken();if(!this.skipSymbol("macro")){this.fail("expected macro")}var name=this.parsePrimary(true);var args=this.parseSignature();var node=new nodes.Macro(macroTok.lineno,macroTok.colno,name,args);this.advanceAfterBlockEnd(macroTok.value);node.body=this.parseUntilBlocks("endmacro");this.advanceAfterBlockEnd();return node},parseCall:function(){var callTok=this.peekToken();if(!this.skipSymbol("call")){this.fail("expected call")}var callerArgs=this.parseSignature(true)||new nodes.NodeList;var macroCall=this.parsePrimary();this.advanceAfterBlockEnd(callTok.value);var body=this.parseUntilBlocks("endcall");this.advanceAfterBlockEnd();var callerName=new nodes.Symbol(callTok.lineno,callTok.colno,"caller");var callerNode=new nodes.Caller(callTok.lineno,callTok.colno,callerName,callerArgs,body);var args=macroCall.args.children;if(!(args[args.length-1]instanceof nodes.KeywordArgs)){args.push(new nodes.KeywordArgs)}var kwargs=args[args.length-1];kwargs.addChild(new nodes.Pair(callTok.lineno,callTok.colno,callerName,callerNode));return new nodes.Output(callTok.lineno,callTok.colno,[macroCall])},parseWithContext:function(){var tok=this.peekToken();var withContext=null;if(this.skipSymbol("with")){withContext=true}else if(this.skipSymbol("without")){withContext=false}if(withContext!==null){if(!this.skipSymbol("context")){this.fail("parseFrom: expected context after with/without",tok.lineno,tok.colno)}}return withContext},parseImport:function(){var importTok=this.peekToken();if(!this.skipSymbol("import")){this.fail("parseImport: expected import",importTok.lineno,importTok.colno)}var template=this.parseExpression();if(!this.skipSymbol("as")){this.fail('parseImport: expected "as" keyword',importTok.lineno,importTok.colno)}var target=this.parsePrimary();var withContext=this.parseWithContext();var node=new nodes.Import(importTok.lineno,importTok.colno,template,target,withContext);this.advanceAfterBlockEnd(importTok.value);return node},parseFrom:function(){var fromTok=this.peekToken();if(!this.skipSymbol("from")){this.fail("parseFrom: expected from")}var template=this.parsePrimary();if(!this.skipSymbol("import")){this.fail("parseFrom: expected import",fromTok.lineno,fromTok.colno)}var names=new nodes.NodeList,withContext;while(1){var nextTok=this.peekToken();if(nextTok.type==lexer.TOKEN_BLOCK_END){if(!names.children.length){this.fail("parseFrom: Expected at least one import name",fromTok.lineno,fromTok.colno)}if(nextTok.value.charAt(0)=="-"){this.dropLeadingWhitespace=true}this.nextToken();break}if(names.children.length>0&&!this.skip(lexer.TOKEN_COMMA)){this.fail("parseFrom: expected comma",fromTok.lineno,fromTok.colno)}var name=this.parsePrimary();if(name.value.charAt(0)=="_"){this.fail("parseFrom: names starting with an underscore "+"cannot be imported",name.lineno,name.colno)}if(this.skipSymbol("as")){var alias=this.parsePrimary();names.addChild(new nodes.Pair(name.lineno,name.colno,name,alias))}else{names.addChild(name)}withContext=this.parseWithContext()}return new nodes.FromImport(fromTok.lineno,fromTok.colno,template,names,withContext)},parseBlock:function(){var tag=this.peekToken();if(!this.skipSymbol("block")){this.fail("parseBlock: expected block",tag.lineno,tag.colno)}var node=new nodes.Block(tag.lineno,tag.colno);node.name=this.parsePrimary();if(!(node.name instanceof nodes.Symbol)){this.fail("parseBlock: variable name expected",tag.lineno,tag.colno)}this.advanceAfterBlockEnd(tag.value);node.body=this.parseUntilBlocks("endblock");if(!this.peekToken()){this.fail("parseBlock: expected endblock, got end of file")}this.advanceAfterBlockEnd();return node},parseTemplateRef:function(tagName,nodeType){var tag=this.peekToken();if(!this.skipSymbol(tagName)){this.fail("parseTemplateRef: expected "+tagName)}var node=new nodeType(tag.lineno,tag.colno);node.template=this.parseExpression();this.advanceAfterBlockEnd(tag.value);return node},parseExtends:function(){return this.parseTemplateRef("extends",nodes.Extends)},parseInclude:function(){return this.parseTemplateRef("include",nodes.Include)},parseIf:function(){var tag=this.peekToken();var node;if(this.skipSymbol("if")||this.skipSymbol("elif")){node=new nodes.If(tag.lineno,tag.colno)}else if(this.skipSymbol("ifAsync")){node=new nodes.IfAsync(tag.lineno,tag.colno)}else{this.fail("parseIf: expected if or elif",tag.lineno,tag.colno)}node.cond=this.parseExpression();this.advanceAfterBlockEnd(tag.value);node.body=this.parseUntilBlocks("elif","else","endif");var tok=this.peekToken();switch(tok&&tok.value){case"elif":node.else_=this.parseIf();break;case"else":this.advanceAfterBlockEnd();node.else_=this.parseUntilBlocks("endif");this.advanceAfterBlockEnd();break;case"endif":node.else_=null;this.advanceAfterBlockEnd();break;default:this.fail("parseIf: expected endif, else, or endif, "+"got end of file")}return node},parseSet:function(){var tag=this.peekToken();if(!this.skipSymbol("set")){this.fail("parseSet: expected set",tag.lineno,tag.colno)}var node=new nodes.Set(tag.lineno,tag.colno,[]);var target;while(target=this.parsePrimary()){node.targets.push(target);if(!this.skip(lexer.TOKEN_COMMA)){break}}if(!this.skipValue(lexer.TOKEN_OPERATOR,"=")){this.fail("parseSet: expected = in set tag",tag.lineno,tag.colno)
-}node.value=this.parseExpression();this.advanceAfterBlockEnd(tag.value);return node},parseStatement:function(){var tok=this.peekToken();var node;if(tok.type!=lexer.TOKEN_SYMBOL){this.fail("tag name expected",tok.lineno,tok.colno)}if(this.breakOnBlocks&&lib.indexOf(this.breakOnBlocks,tok.value)!==-1){return null}switch(tok.value){case"raw":return this.parseRaw();case"if":case"ifAsync":return this.parseIf();case"for":case"asyncEach":case"asyncAll":return this.parseFor();case"block":return this.parseBlock();case"extends":return this.parseExtends();case"include":return this.parseInclude();case"set":return this.parseSet();case"macro":return this.parseMacro();case"call":return this.parseCall();case"import":return this.parseImport();case"from":return this.parseFrom();default:if(this.extensions.length){for(var i=0;i<this.extensions.length;i++){var ext=this.extensions[i];if(lib.indexOf(ext.tags||[],tok.value)!==-1){return ext.parse(this,nodes,lexer)}}}this.fail("unknown block tag: "+tok.value,tok.lineno,tok.colno)}return node},parseRaw:function(){this.advanceAfterBlockEnd();var str="";var begun=this.peekToken();while(1){var tok=this.nextToken(true);if(!tok){this.fail("expected endraw, got end of file")}if(tok.type==lexer.TOKEN_BLOCK_START){var ws=null;var name=this.nextToken(true);if(name.type==lexer.TOKEN_WHITESPACE){ws=name;name=this.nextToken()}if(name.type==lexer.TOKEN_SYMBOL&&name.value=="endraw"){this.advanceAfterBlockEnd(name.value);break}else{str+=tok.value;if(ws){str+=ws.value}str+=name.value}}else if(tok.type===lexer.TOKEN_STRING){str+='"'+tok.value+'"'}else{str+=tok.value}}var output=new nodes.Output(begun.lineno,begun.colno,[new nodes.TemplateData(begun.lineno,begun.colno,str)]);return output},parsePostfix:function(node){var tok=this.peekToken();while(tok){if(tok.type==lexer.TOKEN_LEFT_PAREN){node=new nodes.FunCall(tok.lineno,tok.colno,node,this.parseSignature())}else if(tok.type==lexer.TOKEN_LEFT_BRACKET){var lookup=this.parseAggregate();if(lookup.children.length>1){this.fail("invalid index")}node=new nodes.LookupVal(tok.lineno,tok.colno,node,lookup.children[0])}else if(tok.type==lexer.TOKEN_OPERATOR&&tok.value=="."){this.nextToken();var val=this.nextToken();if(val.type!=lexer.TOKEN_SYMBOL){this.fail("expected name as lookup value, got "+val.value,val.lineno,val.colno)}var lookup=new nodes.Literal(val.lineno,val.colno,val.value);node=new nodes.LookupVal(tok.lineno,tok.colno,node,lookup)}else{break}tok=this.peekToken()}return node},parseExpression:function(){var node=this.parseInlineIf();return node},parseInlineIf:function(){var node=this.parseOr();if(this.skipSymbol("if")){var cond_node=this.parseOr();var body_node=node;node=new nodes.InlineIf(node.lineno,node.colno);node.body=body_node;node.cond=cond_node;if(this.skipSymbol("else")){node.else_=this.parseOr()}else{node.else_=null}}return node},parseOr:function(){var node=this.parseAnd();while(this.skipSymbol("or")){var node2=this.parseAnd();node=new nodes.Or(node.lineno,node.colno,node,node2)}return node},parseAnd:function(){var node=this.parseNot();while(this.skipSymbol("and")){var node2=this.parseNot();node=new nodes.And(node.lineno,node.colno,node,node2)}return node},parseNot:function(){var tok=this.peekToken();if(this.skipSymbol("not")){return new nodes.Not(tok.lineno,tok.colno,this.parseNot())}return this.parseIn()},parseIn:function(){var node=this.parseCompare();while(1){var tok=this.nextToken();if(!tok){break}var invert=tok.type==lexer.TOKEN_SYMBOL&&tok.value=="not";if(!invert){this.pushToken(tok)}if(this.skipSymbol("in")){var node2=this.parseCompare();node=new nodes.In(node.lineno,node.colno,node,node2);if(invert){node=new nodes.Not(node.lineno,node.colno,node)}}else{if(invert){this.pushToken(tok)}break}}return node},parseCompare:function(){var compareOps=["==","!=","<",">","<=",">="];var expr=this.parseAdd();var ops=[];while(1){var tok=this.nextToken();if(!tok){break}else if(lib.indexOf(compareOps,tok.value)!==-1){ops.push(new nodes.CompareOperand(tok.lineno,tok.colno,this.parseAdd(),tok.value))}else{this.pushToken(tok);break}}if(ops.length){return new nodes.Compare(ops[0].lineno,ops[0].colno,expr,ops)}else{return expr}},parseAdd:function(){var node=this.parseSub();while(this.skipValue(lexer.TOKEN_OPERATOR,"+")){var node2=this.parseSub();node=new nodes.Add(node.lineno,node.colno,node,node2)}return node},parseSub:function(){var node=this.parseMul();while(this.skipValue(lexer.TOKEN_OPERATOR,"-")){var node2=this.parseMul();node=new nodes.Sub(node.lineno,node.colno,node,node2)}return node},parseMul:function(){var node=this.parseDiv();while(this.skipValue(lexer.TOKEN_OPERATOR,"*")){var node2=this.parseDiv();node=new nodes.Mul(node.lineno,node.colno,node,node2)}return node},parseDiv:function(){var node=this.parseFloorDiv();while(this.skipValue(lexer.TOKEN_OPERATOR,"/")){var node2=this.parseFloorDiv();node=new nodes.Div(node.lineno,node.colno,node,node2)}return node},parseFloorDiv:function(){var node=this.parseMod();while(this.skipValue(lexer.TOKEN_OPERATOR,"//")){var node2=this.parseMod();node=new nodes.FloorDiv(node.lineno,node.colno,node,node2)}return node},parseMod:function(){var node=this.parsePow();while(this.skipValue(lexer.TOKEN_OPERATOR,"%")){var node2=this.parsePow();node=new nodes.Mod(node.lineno,node.colno,node,node2)}return node},parsePow:function(){var node=this.parseUnary();while(this.skipValue(lexer.TOKEN_OPERATOR,"**")){var node2=this.parseUnary();node=new nodes.Pow(node.lineno,node.colno,node,node2)}return node},parseUnary:function(noFilters){var tok=this.peekToken();var node;if(this.skipValue(lexer.TOKEN_OPERATOR,"-")){node=new nodes.Neg(tok.lineno,tok.colno,this.parseUnary(true))}else if(this.skipValue(lexer.TOKEN_OPERATOR,"+")){node=new nodes.Pos(tok.lineno,tok.colno,this.parseUnary(true))}else{node=this.parsePrimary()}if(!noFilters){node=this.parseFilter(node)}return node},parsePrimary:function(noPostfix){var tok=this.nextToken();var val=null;var node=null;if(!tok){this.fail("expected expression, got end of file")}else if(tok.type==lexer.TOKEN_STRING){val=tok.value}else if(tok.type==lexer.TOKEN_INT){val=parseInt(tok.value,10)}else if(tok.type==lexer.TOKEN_FLOAT){val=parseFloat(tok.value)}else if(tok.type==lexer.TOKEN_BOOLEAN){if(tok.value=="true"){val=true}else if(tok.value=="false"){val=false}else{this.fail("invalid boolean: "+tok.value,tok.lineno,tok.colno)}}else if(tok.type==lexer.TOKEN_REGEX){val=new RegExp(tok.value.body,tok.value.flags)}if(val!==null){node=new nodes.Literal(tok.lineno,tok.colno,val)}else if(tok.type==lexer.TOKEN_SYMBOL){node=new nodes.Symbol(tok.lineno,tok.colno,tok.value);if(!noPostfix){node=this.parsePostfix(node)}}else{this.pushToken(tok);node=this.parseAggregate()}if(node){return node}else{this.fail("unexpected token: "+tok.value,tok.lineno,tok.colno)}},parseFilter:function(node){while(this.skip(lexer.TOKEN_PIPE)){var tok=this.expect(lexer.TOKEN_SYMBOL);var name=tok.value;while(this.skipValue(lexer.TOKEN_OPERATOR,".")){name+="."+this.expect(lexer.TOKEN_SYMBOL).value}node=new nodes.Filter(tok.lineno,tok.colno,new nodes.Symbol(tok.lineno,tok.colno,name),new nodes.NodeList(tok.lineno,tok.colno,[node]));if(this.peekToken().type==lexer.TOKEN_LEFT_PAREN){var call=this.parsePostfix(node);node.args.children=node.args.children.concat(call.args.children)}}return node},parseAggregate:function(){var tok=this.nextToken();var node;switch(tok.type){case lexer.TOKEN_LEFT_PAREN:node=new nodes.Group(tok.lineno,tok.colno);break;case lexer.TOKEN_LEFT_BRACKET:node=new nodes.Array(tok.lineno,tok.colno);break;case lexer.TOKEN_LEFT_CURLY:node=new nodes.Dict(tok.lineno,tok.colno);break;default:return null}while(1){var type=this.peekToken().type;if(type==lexer.TOKEN_RIGHT_PAREN||type==lexer.TOKEN_RIGHT_BRACKET||type==lexer.TOKEN_RIGHT_CURLY){this.nextToken();break}if(node.children.length>0){if(!this.skip(lexer.TOKEN_COMMA)){this.fail("parseAggregate: expected comma after expression",tok.lineno,tok.colno)}}if(node instanceof nodes.Dict){var key=this.parsePrimary();if(!this.skip(lexer.TOKEN_COLON)){this.fail("parseAggregate: expected colon after dict key",tok.lineno,tok.colno)}var value=this.parseExpression();node.addChild(new nodes.Pair(key.lineno,key.colno,key,value))}else{var expr=this.parseExpression();node.addChild(expr)}}return node},parseSignature:function(tolerant,noParens){var tok=this.peekToken();if(!noParens&&tok.type!=lexer.TOKEN_LEFT_PAREN){if(tolerant){return null}else{this.fail("expected arguments",tok.lineno,tok.colno)}}if(tok.type==lexer.TOKEN_LEFT_PAREN){tok=this.nextToken()}var args=new nodes.NodeList(tok.lineno,tok.colno);var kwargs=new nodes.KeywordArgs(tok.lineno,tok.colno);var kwnames=[];var checkComma=false;while(1){tok=this.peekToken();if(!noParens&&tok.type==lexer.TOKEN_RIGHT_PAREN){this.nextToken();break}else if(noParens&&tok.type==lexer.TOKEN_BLOCK_END){break}if(checkComma&&!this.skip(lexer.TOKEN_COMMA)){this.fail("parseSignature: expected comma after expression",tok.lineno,tok.colno)}else{var arg=this.parseExpression();if(this.skipValue(lexer.TOKEN_OPERATOR,"=")){kwargs.addChild(new nodes.Pair(arg.lineno,arg.colno,arg,this.parseExpression()))}else{args.addChild(arg)}}checkComma=true}if(kwargs.children.length){args.addChild(kwargs)}return args},parseUntilBlocks:function(){var prev=this.breakOnBlocks;this.breakOnBlocks=lib.toArray(arguments);var ret=this.parse();this.breakOnBlocks=prev;return ret},parseNodes:function(){var tok;var buf=[];while(tok=this.nextToken()){if(tok.type==lexer.TOKEN_DATA){var data=tok.value;var nextToken=this.peekToken();var nextVal=nextToken&&nextToken.value;if(this.dropLeadingWhitespace){data=data.replace(/^\s*/,"");this.dropLeadingWhitespace=false}if(nextToken&&nextToken.type==lexer.TOKEN_BLOCK_START&&nextVal.charAt(nextVal.length-1)=="-"){data=data.replace(/\s*$/,"")}buf.push(new nodes.Output(tok.lineno,tok.colno,[new nodes.TemplateData(tok.lineno,tok.colno,data)]))}else if(tok.type==lexer.TOKEN_BLOCK_START){var n=this.parseStatement();if(!n){break}buf.push(n)}else if(tok.type==lexer.TOKEN_VARIABLE_START){var e=this.parseExpression();this.advanceAfterVariableEnd();buf.push(new nodes.Output(tok.lineno,tok.colno,[e]))}else if(tok.type!=lexer.TOKEN_COMMENT){this.fail("Unexpected token at top-level: "+tok.type,tok.lineno,tok.colno)}}return buf},parse:function(){return new nodes.NodeList(0,0,this.parseNodes())},parseAsRoot:function(){return new nodes.Root(0,0,this.parseNodes())}});modules["parser"]={parse:function(src,extensions,opts){var p=new Parser(lexer.lex(src,opts));if(extensions!==undefined){p.extensions=extensions}return p.parseAsRoot()}}})();(function(){var nodes=modules["nodes"];var lib=modules["lib"];var sym=0;function gensym(){return"hole_"+sym++}function mapCOW(arr,func){var res=null;for(var i=0;i<arr.length;i++){var item=func(arr[i]);if(item!==arr[i]){if(!res){res=arr.slice()}res[i]=item}}return res||arr}function walk(ast,func,depthFirst){if(!(ast instanceof nodes.Node)){return ast}if(!depthFirst){var astT=func(ast);if(astT&&astT!==ast){return astT}}if(ast instanceof nodes.NodeList){var children=mapCOW(ast.children,function(node){return walk(node,func,depthFirst)});if(children!==ast.children){ast=new nodes[ast.typename](ast.lineno,ast.colno,children)}}else if(ast instanceof nodes.CallExtension){var args=walk(ast.args,func,depthFirst);var contentArgs=mapCOW(ast.contentArgs,function(node){return walk(node,func,depthFirst)});if(args!==ast.args||contentArgs!==ast.contentArgs){ast=new nodes[ast.typename](ast.extName,ast.prop,args,contentArgs)}}else{var props=ast.fields.map(function(field){return ast[field]});var propsT=mapCOW(props,function(prop){return walk(prop,func,depthFirst)});if(propsT!==props){ast=new nodes[ast.typename](ast.lineno,ast.colno);propsT.forEach(function(prop,i){ast[ast.fields[i]]=prop})}}return depthFirst?func(ast)||ast:ast}function depthWalk(ast,func){return walk(ast,func,true)}function _liftFilters(node,asyncFilters,prop){var children=[];var walked=depthWalk(prop?node[prop]:node,function(node){if(node instanceof nodes.Block){return node}else if(node instanceof nodes.Filter&&lib.indexOf(asyncFilters,node.name.value)!==-1||node instanceof nodes.CallExtensionAsync){var symbol=new nodes.Symbol(node.lineno,node.colno,gensym());children.push(new nodes.FilterAsync(node.lineno,node.colno,node.name,node.args,symbol));return symbol}});if(prop){node[prop]=walked}else{node=walked}if(children.length){children.push(node);return new nodes.NodeList(node.lineno,node.colno,children)}else{return node}}function liftFilters(ast,asyncFilters){return depthWalk(ast,function(node){if(node instanceof nodes.Output){return _liftFilters(node,asyncFilters)}else if(node instanceof nodes.For){return _liftFilters(node,asyncFilters,"arr")}else if(node instanceof nodes.If){return _liftFilters(node,asyncFilters,"cond")}else if(node instanceof nodes.CallExtension){return _liftFilters(node,asyncFilters,"args")}})}function liftSuper(ast){return walk(ast,function(blockNode){if(!(blockNode instanceof nodes.Block)){return}var hasSuper=false;var symbol=gensym();blockNode.body=walk(blockNode.body,function(node){if(node instanceof nodes.FunCall&&node.name.value=="super"){hasSuper=true;return new nodes.Symbol(node.lineno,node.colno,symbol)}});if(hasSuper){blockNode.body.children.unshift(new nodes.Super(0,0,blockNode.name,new nodes.Symbol(0,0,symbol)))}})}function convertStatements(ast){return depthWalk(ast,function(node){if(!(node instanceof nodes.If)&&!(node instanceof nodes.For)){return}var async=false;walk(node,function(node){if(node instanceof nodes.FilterAsync||node instanceof nodes.IfAsync||node instanceof nodes.AsyncEach||node instanceof nodes.AsyncAll||node instanceof nodes.CallExtensionAsync){async=true;return node}});if(async){if(node instanceof nodes.If){return new nodes.IfAsync(node.lineno,node.colno,node.cond,node.body,node.else_)}else if(node instanceof nodes.For){return new nodes.AsyncEach(node.lineno,node.colno,node.arr,node.name,node.body,node.else_)}}})}function cps(ast,asyncFilters){return convertStatements(liftSuper(liftFilters(ast,asyncFilters)))}function transform(ast,asyncFilters,name){return cps(ast,asyncFilters||[])}modules["transformer"]={transform:transform}})();(function(){var lib=modules["lib"];var parser=modules["parser"];var transformer=modules["transformer"];var nodes=modules["nodes"];var Object=modules["object"];var Frame=modules["runtime"].Frame;var compareOps={"==":"==","!=":"!=","<":"<",">":">","<=":"<=",">=":">="};function binOpEmitter(str){return function(node,frame){this.compile(node.left,frame);this.emit(str);this.compile(node.right,frame)}}var Compiler=Object.extend({init:function(templateName){this.templateName=templateName;this.codebuf=[];this.lastId=0;this.buffer=null;this.bufferStack=[];this.isChild=false;this.scopeClosers=""},fail:function(msg,lineno,colno){if(lineno!==undefined)lineno+=1;if(colno!==undefined)colno+=1;throw new lib.TemplateError(msg,lineno,colno)},pushBufferId:function(id){this.bufferStack.push(this.buffer);this.buffer=id;this.emit("var "+this.buffer+' = "";')},popBufferId:function(){this.buffer=this.bufferStack.pop()},emit:function(code){this.codebuf.push(code)},emitLine:function(code){this.emit(code+"\n")},emitLines:function(){lib.each(lib.toArray(arguments),function(line){this.emitLine(line)},this)},emitFuncBegin:function(name){this.buffer="output";this.scopeClosers="";this.emitLine("function "+name+"(env, context, frame, runtime, cb) {");this.emitLine("var lineno = null;");this.emitLine("var colno = null;");this.emitLine("var "+this.buffer+' = "";');this.emitLine("try {")},emitFuncEnd:function(noReturn){if(!noReturn){this.emitLine("cb(null, "+this.buffer+");")}this.closeScopeLevels();this.emitLine("} catch (e) {");this.emitLine("  cb(runtime.handleError(e, lineno, colno));");this.emitLine("}");this.emitLine("}");this.buffer=null},addScopeLevel:function(){this.scopeClosers+="})"},closeScopeLevels:function(){this.emitLine(this.scopeClosers+";");this.scopeClosers=""},withScopedSyntax:function(func){var scopeClosers=this.scopeClosers;this.scopeClosers="";func.call(this);this.closeScopeLevels();this.scopeClosers=scopeClosers},makeCallback:function(res){var err=this.tmpid();return"function("+err+(res?","+res:"")+") {\n"+"if("+err+") { cb("+err+"); return; }"},tmpid:function(){this.lastId++;return"t_"+this.lastId},_bufferAppend:function(func){this.emit(this.buffer+" += runtime.suppressValue(");func.call(this);this.emit(", env.opts.autoescape);\n")},_compileChildren:function(node,frame){var children=node.children;for(var i=0,l=children.length;i<l;i++){this.compile(children[i],frame)}},_compileAggregate:function(node,frame,startChar,endChar){if(startChar){this.emit(startChar)}for(var i=0;i<node.children.length;i++){if(i>0){this.emit(",")}this.compile(node.children[i],frame)}if(endChar){this.emit(endChar)}},_compileExpression:function(node,frame){this.assertType(node,nodes.Literal,nodes.Symbol,nodes.Group,nodes.Array,nodes.Dict,nodes.FunCall,nodes.Caller,nodes.Filter,nodes.LookupVal,nodes.Compare,nodes.InlineIf,nodes.In,nodes.And,nodes.Or,nodes.Not,nodes.Add,nodes.Sub,nodes.Mul,nodes.Div,nodes.FloorDiv,nodes.Mod,nodes.Pow,nodes.Neg,nodes.Pos,nodes.Compare,nodes.NodeList);this.compile(node,frame)},assertType:function(node){var types=lib.toArray(arguments).slice(1);var success=false;for(var i=0;i<types.length;i++){if(node instanceof types[i]){success=true}}if(!success){this.fail("assertType: invalid type: "+node.typename,node.lineno,node.colno)}},compileCallExtension:function(node,frame,async){var name=node.extName;var args=node.args;var contentArgs=node.contentArgs;var autoescape=typeof node.autoescape==="boolean"?node.autoescape:true;var transformedArgs=[];if(!async){this.emit(this.buffer+" += runtime.suppressValue(")}this.emit('env.getExtension("'+node.extName+'")["'+node.prop+'"](');this.emit("context");if(args||contentArgs){this.emit(",")}if(args){if(!(args instanceof nodes.NodeList)){this.fail("compileCallExtension: arguments must be a NodeList, "+"use `parser.parseSignature`")}lib.each(args.children,function(arg,i){this._compileExpression(arg,frame);if(i!=args.children.length-1||contentArgs.length){this.emit(",")}},this)}if(contentArgs.length){lib.each(contentArgs,function(arg,i){if(i>0){this.emit(",")}if(arg){var id=this.tmpid();this.emitLine("function(cb) {");this.emitLine("if(!cb) { cb = function(err) { if(err) { throw err; }}}");this.pushBufferId(id);this.withScopedSyntax(function(){this.compile(arg,frame);this.emitLine("cb(null, "+id+");")});this.popBufferId();this.emitLine("return "+id+";");this.emitLine("}")}else{this.emit("null")}},this)}if(async){var res=this.tmpid();this.emitLine(", "+this.makeCallback(res));this.emitLine(this.buffer+" += runtime.suppressValue("+res+", "+autoescape+" && env.opts.autoescape);");this.addScopeLevel()}else{this.emit(")");this.emit(", "+autoescape+" && env.opts.autoescape);\n")}},compileCallExtensionAsync:function(node,frame){this.compileCallExtension(node,frame,true)},compileNodeList:function(node,frame){this._compileChildren(node,frame)},compileLiteral:function(node,frame){if(typeof node.value=="string"){var val=node.value.replace(/\\/g,"\\\\");val=val.replace(/"/g,'\\"');val=val.replace(/\n/g,"\\n");val=val.replace(/\r/g,"\\r");val=val.replace(/\t/g,"\\t");this.emit('"'+val+'"')}else{this.emit(node.value.toString())}},compileSymbol:function(node,frame){var name=node.value;var v;if(v=frame.lookup(name)){this.emit(v)}else{this.emit("runtime.contextOrFrameLookup("+'context, frame, "'+name+'")')}},compileGroup:function(node,frame){this._compileAggregate(node,frame,"(",")")},compileArray:function(node,frame){this._compileAggregate(node,frame,"[","]")},compileDict:function(node,frame){this._compileAggregate(node,frame,"{","}")},compilePair:function(node,frame){var key=node.key;var val=node.value;if(key instanceof nodes.Symbol){key=new nodes.Literal(key.lineno,key.colno,key.value)}else if(!(key instanceof nodes.Literal&&typeof key.value=="string")){this.fail("compilePair: Dict keys must be strings or names",key.lineno,key.colno)}this.compile(key,frame);this.emit(": ");this._compileExpression(val,frame)},compileInlineIf:function(node,frame){this.emit("(");this.compile(node.cond,frame);this.emit("?");this.compile(node.body,frame);this.emit(":");if(node.else_!==null)this.compile(node.else_,frame);else this.emit('""');this.emit(")")},compileIn:function(node,frame){this.emit("(");this.compile(node.right,frame);this.emit(".indexOf(");this.compile(node.left,frame);this.emit(") !== -1)")},compileOr:binOpEmitter(" || "),compileAnd:binOpEmitter(" && "),compileAdd:binOpEmitter(" + "),compileSub:binOpEmitter(" - "),compileMul:binOpEmitter(" * "),compileDiv:binOpEmitter(" / "),compileMod:binOpEmitter(" % "),compileNot:function(node,frame){this.emit("!");this.compile(node.target,frame)},compileFloorDiv:function(node,frame){this.emit("Math.floor(");this.compile(node.left,frame);this.emit(" / ");this.compile(node.right,frame);this.emit(")")},compilePow:function(node,frame){this.emit("Math.pow(");this.compile(node.left,frame);this.emit(", 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Frame=runtime.Frame;var Environment=Obj.extend({init:function(loaders,opts){var opts=this.opts=opts||{};this.opts.dev=!!opts.dev;this.opts.autoescape=!!opts.autoescape;this.opts.trimBlocks=!!opts.trimBlocks;this.opts.lstripBlocks=!!opts.lstripBlocks;if(!loaders){if(builtin_loaders.FileSystemLoader){this.loaders=[new builtin_loaders.FileSystemLoader("views")]}else{this.loaders=[new builtin_loaders.WebLoader("/views")]}}else{this.loaders=lib.isArray(loaders)?loaders:[loaders]}this.initCache();this.filters={};this.asyncFilters=[];this.extensions={};this.extensionsList=[];for(var name in builtin_filters){this.addFilter(name,builtin_filters[name])}},initCache:function(){var cache={};lib.each(this.loaders,function(loader){if(typeof loader.on==="function"){loader.on("update",function(template){cache[template]=null})}});this.cache=cache},addExtension:function(name,extension){extension._name=name;this.extensions[name]=extension;this.extensionsList.push(extension)},getExtension:function(name){return this.extensions[name]},addGlobal:function(name,value){globals[name]=value},addFilter:function(name,func,async){var wrapped=func;if(async){this.asyncFilters.push(name)}this.filters[name]=wrapped},getFilter:function(name){if(!this.filters[name]){throw new Error("filter not found: "+name)}return this.filters[name]},getTemplate:function(name,eagerCompile,parentName,cb){if(name&&name.raw){name=name.raw}if(lib.isFunction(parentName)){cb=parentName;parentName=null;eagerCompile=eagerCompile||false}if(lib.isFunction(eagerCompile)){cb=eagerCompile;eagerCompile=false}if(typeof name!=="string"){throw new Error("template names must be a string: "+name)}var tmpl=this.cache[name];if(tmpl){if(eagerCompile){tmpl.compile()}if(cb){cb(null,tmpl)}else{return tmpl}}else{var syncResult;lib.asyncIter(this.loaders,function(loader,i,next,done){function handle(src){if(src){done(src)}else{next()}}if(parentName&&(name.indexOf("./")==0||name.indexOf("../")==0)){name=loader.resolve(parentName,name)}if(loader.async){loader.getSource(name,function(err,src){if(err){throw err}handle(src)})}else{handle(loader.getSource(name))}},function(info){if(!info){var err=new Error("template not found: "+name);if(cb){cb(err)}else{throw err}}else{var tmpl=new Template(info.src,this,info.path,eagerCompile);if(!info.noCache){this.cache[name]=tmpl}if(cb){cb(null,tmpl)}else{syncResult=tmpl}}}.bind(this));return syncResult}},express:function(app){var env=this;function NunjucksView(name,opts){this.name=name;this.path=name;this.defaultEngine=opts.defaultEngine;this.ext=path.extname(name);if(!this.ext&&!this.defaultEngine)throw new Error("No default engine was specified and no extension was provided.");if(!this.ext)this.name+=this.ext=("."!==this.defaultEngine[0]?".":"")+this.defaultEngine}NunjucksView.prototype.render=function(opts,cb){env.render(this.name,opts,cb)};app.set("view",NunjucksView)},render:function(name,ctx,cb){if(lib.isFunction(ctx)){cb=ctx;ctx=null}var syncResult=null;this.getTemplate(name,function(err,tmpl){if(err&&cb){cb(err)}else if(err){throw err}else{tmpl.render(ctx,cb||function(err,res){if(err){throw err}syncResult=res})}});return syncResult},renderString:function(src,ctx,opts,cb){if(lib.isFunction(opts)){cb=opts;opts={}}opts=opts||{};var tmpl=new Template(src,this,opts.path);return tmpl.render(ctx,cb)}});var Context=Obj.extend({init:function(ctx,blocks){this.ctx=ctx;this.blocks={};this.exported=[];for(var name in blocks){this.addBlock(name,blocks[name])}},lookup:function(name){if(name in globals&&!(name in this.ctx)){return globals[name]}else{return this.ctx[name]}},setVariable:function(name,val){this.ctx[name]=val},getVariables:function(){return this.ctx},addBlock:function(name,block){this.blocks[name]=this.blocks[name]||[];this.blocks[name].push(block)},getBlock:function(name){if(!this.blocks[name]){throw new Error('unknown block "'+name+'"')}return this.blocks[name][0]},getSuper:function(env,name,block,frame,runtime,cb){var idx=lib.indexOf(this.blocks[name]||[],block);var blk=this.blocks[name][idx+1];var context=this;if(idx==-1||!blk){throw new Error('no super block available for "'+name+'"')}blk(env,context,frame,runtime,cb)},addExport:function(name){this.exported.push(name)},getExported:function(){var exported={};for(var i=0;i<this.exported.length;i++){var name=this.exported[i];exported[name]=this.ctx[name]}return exported}});var Template=Obj.extend({init:function(src,env,path,eagerCompile){this.env=env||new Environment;if(lib.isObject(src)){switch(src.type){case"code":this.tmplProps=src.obj;break;case"string":this.tmplStr=src.obj;break}}else if(lib.isString(src)){this.tmplStr=src}else{throw new Error("src must be a string or an object describing "+"the source")}this.path=path;if(eagerCompile){lib.withPrettyErrors(this.path,this.env.dev,this._compile.bind(this))}else{this.compiled=false}},render:function(ctx,frame,cb){if(typeof ctx==="function"){cb=ctx;ctx={}}else if(typeof frame==="function"){cb=frame;frame=null}return lib.withPrettyErrors(this.path,this.env.dev,function(){try{this.compile()}catch(e){if(cb)return cb(e);else throw e}var context=new Context(ctx||{},this.blocks);var syncResult=null;this.rootRenderFunc(this.env,context,frame||new Frame,runtime,cb||function(err,res){if(err){throw err}syncResult=res});return syncResult}.bind(this))},getExported:function(ctx,frame,cb){if(typeof ctx==="function"){cb=ctx;ctx={}}if(typeof frame==="function"){cb=frame;frame=null}try{this.compile()}catch(e){if(cb)return cb(e);else throw e}var context=new Context(ctx||{},this.blocks);this.rootRenderFunc(this.env,context,frame||new Frame,runtime,function(){cb(null,context.getExported())})},compile:function(){if(!this.compiled){this._compile()}},_compile:function(){var props;if(this.tmplProps){props=this.tmplProps}else{var source=compiler.compile(this.tmplStr,this.env.asyncFilters,this.env.extensionsList,this.path,this.env.opts);var func=new Function(source);props=func()}this.blocks=this._getBlocks(props);this.rootRenderFunc=props.root;this.compiled=true},_getBlocks:function(props){var blocks={};for(var k in props){if(k.slice(0,2)=="b_"){blocks[k.slice(2)]=props[k]}}return blocks}});modules["environment"]={Environment:Environment,Template:Template}})();var nunjucks;var lib=modules["lib"];var env=modules["environment"];var compiler=modules["compiler"];var parser=modules["parser"];var lexer=modules["lexer"];var runtime=modules["runtime"];var Loader=modules["loader"];var loaders=modules["loaders"];var precompile=modules["precompile"];nunjucks={};nunjucks.Environment=env.Environment;nunjucks.Template=env.Template;nunjucks.Loader=Loader;nunjucks.FileSystemLoader=loaders.FileSystemLoader;nunjucks.WebLoader=loaders.WebLoader;nunjucks.compiler=compiler;nunjucks.parser=parser;nunjucks.lexer=lexer;nunjucks.runtime=runtime;var e;nunjucks.configure=function(templatesPath,opts){opts=opts||{};if(lib.isObject(templatesPath)){opts=templatesPath;templatesPath=null}var noWatch="watch"in opts?!opts.watch:false;var loader=loaders.FileSystemLoader||loaders.WebLoader;e=new env.Environment(new loader(templatesPath,noWatch),opts);if(opts&&opts.express){e.express(opts.express)}return e};nunjucks.compile=function(src,env,path,eagerCompile){if(!e){nunjucks.configure()}return new nunjucks.Template(src,env,path,eagerCompile)};nunjucks.render=function(name,ctx,cb){if(!e){nunjucks.configure()}return e.render(name,ctx,cb)};nunjucks.renderString=function(src,ctx,cb){if(!e){nunjucks.configure()}return e.renderString(src,ctx,cb)};if(precompile){nunjucks.precompile=precompile.precompile;nunjucks.precompileString=precompile.precompileString}nunjucks.require=function(name){return modules[name]};if(typeof define==="function"&&define.amd){define(function(){return nunjucks})}else{window.nunjucks=nunjucks;if(typeof module!=="undefined")module.exports=nunjucks}})();
\ No newline at end of file
+(function(){var modules={};(function(){"use strict";function extend(cls,name,props){var F=function(){};F.prototype=cls.prototype;var prototype=new F;var fnTest=/xyz/.test(function(){xyz})?/\bparent\b/:/.*/;props=props||{};for(var k in props){var src=props[k];var parent=prototype[k];if(typeof parent==="function"&&typeof src==="function"&&fnTest.test(src)){prototype[k]=function(src,parent){return function(){var tmp=this.parent;this.parent=parent;var res=src.apply(this,arguments);this.parent=tmp;return res}}(src,parent)}else{prototype[k]=src}}prototype.typename=name;var new_cls=function(){if(prototype.init){prototype.init.apply(this,arguments)}};new_cls.prototype=prototype;new_cls.prototype.constructor=new_cls;new_cls.extend=function(name,props){if(typeof name==="object"){props=name;name="anonymous"}return extend(new_cls,name,props)};return new_cls}modules["object"]=extend(Object,"Object",{})})();(function(){"use strict";var ArrayProto=Array.prototype;var ObjProto=Object.prototype;var escapeMap={"&":"&amp;",'"':"&quot;","'":"&#39;","<":"&lt;",">":"&gt;"};var escapeRegex=/[&"'<>]/g;var lookupEscape=function(ch){return escapeMap[ch]};var exports=modules["lib"]={};exports.withPrettyErrors=function(path,withInternals,func){try{return func()}catch(e){if(!e.Update){e=new exports.TemplateError(e)}e.Update(path);if(!withInternals){var old=e;e=new Error(old.message);e.name=old.name}throw e}};exports.TemplateError=function(message,lineno,colno){var err=this;if(message instanceof Error){err=message;message=message.name+": "+message.message}else{if(Error.captureStackTrace){Error.captureStackTrace(err)}}err.name="Template render error";err.message=message;err.lineno=lineno;err.colno=colno;err.firstUpdate=true;err.Update=function(path){var message="("+(path||"unknown path")+")";if(this.firstUpdate){if(this.lineno&&this.colno){message+=" [Line "+this.lineno+", Column "+this.colno+"]"}else if(this.lineno){message+=" [Line "+this.lineno+"]"}}message+="\n ";if(this.firstUpdate){message+=" "}this.message=message+(this.message||"");this.firstUpdate=false;return this};return err};exports.TemplateError.prototype=Error.prototype;exports.escape=function(val){return val.replace(escapeRegex,lookupEscape)};exports.isFunction=function(obj){return ObjProto.toString.call(obj)==="[object Function]"};exports.isArray=Array.isArray||function(obj){return ObjProto.toString.call(obj)==="[object Array]"};exports.isString=function(obj){return ObjProto.toString.call(obj)==="[object String]"};exports.isObject=function(obj){return ObjProto.toString.call(obj)==="[object Object]"};exports.groupBy=function(obj,val){var result={};var iterator=exports.isFunction(val)?val:function(obj){return obj[val]};for(var i=0;i<obj.length;i++){var value=obj[i];var key=iterator(value,i);(result[key]||(result[key]=[])).push(value)}return result};exports.toArray=function(obj){return Array.prototype.slice.call(obj)};exports.without=function(array){var result=[];if(!array){return result}var index=-1,length=array.length,contains=exports.toArray(arguments).slice(1);while(++index<length){if(exports.indexOf(contains,array[index])===-1){result.push(array[index])}}return result};exports.extend=function(obj,obj2){for(var k in obj2){obj[k]=obj2[k]}return obj};exports.repeat=function(char_,n){var str="";for(var i=0;i<n;i++){str+=char_}return str};exports.each=function(obj,func,context){if(obj==null){return}if(ArrayProto.each&&obj.each===ArrayProto.each){obj.forEach(func,context)}else if(obj.length===+obj.length){for(var i=0,l=obj.length;i<l;i++){func.call(context,obj[i],i,obj)}}};exports.map=function(obj,func){var results=[];if(obj==null){return results}if(ArrayProto.map&&obj.map===ArrayProto.map){return obj.map(func)}for(var i=0;i<obj.length;i++){results[results.length]=func(obj[i],i)}if(obj.length===+obj.length){results.length=obj.length}return results};exports.asyncIter=function(arr,iter,cb){var i=-1;function next(){i++;if(i<arr.length){iter(arr[i],i,next,cb)}else{cb()}}next()};exports.asyncFor=function(obj,iter,cb){var keys=exports.keys(obj);var len=keys.length;var i=-1;function next(){i++;var k=keys[i];if(i<len){iter(k,obj[k],i,len,next)}else{cb()}}next()};exports.indexOf=Array.prototype.indexOf?function(arr,searchElement,fromIndex){return Array.prototype.indexOf.call(arr,searchElement,fromIndex)}:function(arr,searchElement,fromIndex){var length=this.length>>>0;fromIndex=+fromIndex||0;if(Math.abs(fromIndex)===Infinity){fromIndex=0}if(fromIndex<0){fromIndex+=length;if(fromIndex<0){fromIndex=0}}for(;fromIndex<length;fromIndex++){if(arr[fromIndex]===searchElement){return fromIndex}}return-1};if(!Array.prototype.map){Array.prototype.map=function(){throw new Error("map is unimplemented for this js engine")}}exports.keys=function(obj){if(Object.prototype.keys){return obj.keys()}else{var keys=[];for(var k in obj){if(obj.hasOwnProperty(k)){keys.push(k)}}return keys}}})();(function(){"use strict";var util=modules["util"];var lib=modules["lib"];var Object=modules["object"];function traverseAndCheck(obj,type,results){if(obj instanceof type){results.push(obj)}if(obj instanceof Node){obj.findAll(type,results)}}var Node=Object.extend("Node",{init:function(lineno,colno){this.lineno=lineno;this.colno=colno;var fields=this.fields;for(var i=0,l=fields.length;i<l;i++){var field=fields[i];var val=arguments[i+2];if(val===undefined){val=null}this[field]=val}},findAll:function(type,results){results=results||[];if(this instanceof NodeList){var children=this.children;for(var i=0,l=children.length;i<l;i++){traverseAndCheck(children[i],type,results)}}else{var fields=this.fields;for(var i=0,l=fields.length;i<l;i++){traverseAndCheck(this[fields[i]],type,results)}}return results},iterFields:function(func){lib.each(this.fields,function(field){func(this[field],field)},this)}});var Value=Node.extend("Value",{fields:["value"]});var NodeList=Node.extend("NodeList",{fields:["children"],init:function(lineno,colno,nodes){this.parent(lineno,colno,nodes||[])},addChild:function(node){this.children.push(node)}});var Root=NodeList.extend("Root");var Literal=Value.extend("Literal");var Symbol=Value.extend("Symbol");var Group=NodeList.extend("Group");var Array=NodeList.extend("Array");var Pair=Node.extend("Pair",{fields:["key","value"]});var Dict=NodeList.extend("Dict");var LookupVal=Node.extend("LookupVal",{fields:["target","val"]});var If=Node.extend("If",{fields:["cond","body","else_"]});var IfAsync=If.extend("IfAsync");var InlineIf=Node.extend("InlineIf",{fields:["cond","body","else_"]});var For=Node.extend("For",{fields:["arr","name","body","else_"]});var AsyncEach=For.extend("AsyncEach");var AsyncAll=For.extend("AsyncAll");var Macro=Node.extend("Macro",{fields:["name","args","body"]});var Caller=Macro.extend("Caller");var Import=Node.extend("Import",{fields:["template","target","withContext"]});var FromImport=Node.extend("FromImport",{fields:["template","names","withContext"],init:function(lineno,colno,template,names,withContext){this.parent(lineno,colno,template,names||new NodeList,withContext)}});var FunCall=Node.extend("FunCall",{fields:["name","args"]});var Filter=FunCall.extend("Filter");var FilterAsync=Filter.extend("FilterAsync",{fields:["name","args","symbol"]});var KeywordArgs=Dict.extend("KeywordArgs");var Block=Node.extend("Block",{fields:["name","body"]});var Super=Node.extend("Super",{fields:["blockName","symbol"]});var TemplateRef=Node.extend("TemplateRef",{fields:["template"]});var Extends=TemplateRef.extend("Extends");var Include=TemplateRef.extend("Include");var Set=Node.extend("Set",{fields:["targets","value"]});var Output=NodeList.extend("Output");var TemplateData=Literal.extend("TemplateData");var UnaryOp=Node.extend("UnaryOp",{fields:["target"]});var BinOp=Node.extend("BinOp",{fields:["left","right"]});var In=BinOp.extend("In");var Or=BinOp.extend("Or");var And=BinOp.extend("And");var Not=UnaryOp.extend("Not");var Add=BinOp.extend("Add");var Sub=BinOp.extend("Sub");var Mul=BinOp.extend("Mul");var Div=BinOp.extend("Div");var FloorDiv=BinOp.extend("FloorDiv");var Mod=BinOp.extend("Mod");var Pow=BinOp.extend("Pow");var Neg=UnaryOp.extend("Neg");var Pos=UnaryOp.extend("Pos");var Compare=Node.extend("Compare",{fields:["expr","ops"]});var CompareOperand=Node.extend("CompareOperand",{fields:["expr","type"]});var CustomTag=Node.extend("CustomTag",{init:function(lineno,colno,name){this.lineno=lineno;this.colno=colno;this.name=name}});var CallExtension=Node.extend("CallExtension",{fields:["extName","prop","args","contentArgs"],init:function(ext,prop,args,contentArgs){this.extName=ext._name||ext;this.prop=prop;this.args=args||new NodeList;this.contentArgs=contentArgs||[];this.autoescape=ext.autoescape}});var CallExtensionAsync=CallExtension.extend("CallExtensionAsync");function printNodes(node,indent){indent=indent||0;function print(str,indent,inline){var lines=str.split("\n");for(var i=0;i<lines.length;i++){if(lines[i]){if(inline&&i>0||!inline){for(var j=0;j<indent;j++){util.print(" ")}}}if(i===lines.length-1){util.print(lines[i])}else{util.puts(lines[i])}}}print(node.typename+": ",indent);if(node instanceof NodeList){print("\n");lib.each(node.children,function(n){printNodes(n,indent+2)})}else if(node instanceof CallExtension){print(node.extName+"."+node.prop);print("\n");if(node.args){printNodes(node.args,indent+2)}if(node.contentArgs){lib.each(node.contentArgs,function(n){printNodes(n,indent+2)})}}else{var nodes=null;var props=null;node.iterFields(function(val,field){if(val instanceof Node){nodes=nodes||{};nodes[field]=val}else{props=props||{};props[field]=val}});if(props){print(util.inspect(props,true,null)+"\n",null,true)}else{print("\n")}if(nodes){for(var k in nodes){printNodes(nodes[k],indent+2)}}}}modules["nodes"]={Node:Node,Root:Root,NodeList:NodeList,Value:Value,Literal:Literal,Symbol:Symbol,Group:Group,Array:Array,Pair:Pair,Dict:Dict,Output:Output,TemplateData:TemplateData,If:If,IfAsync:IfAsync,InlineIf:InlineIf,For:For,AsyncEach:AsyncEach,AsyncAll:AsyncAll,Macro:Macro,Caller:Caller,Import:Import,FromImport:FromImport,FunCall:FunCall,Filter:Filter,FilterAsync:FilterAsync,KeywordArgs:KeywordArgs,Block:Block,Super:Super,Extends:Extends,Include:Include,Set:Set,LookupVal:LookupVal,BinOp:BinOp,In:In,Or:Or,And:And,Not:Not,Add:Add,Sub:Sub,Mul:Mul,Div:Div,FloorDiv:FloorDiv,Mod:Mod,Pow:Pow,Neg:Neg,Pos:Pos,Compare:Compare,CompareOperand:CompareOperand,CallExtension:CallExtension,CallExtensionAsync:CallExtensionAsync,printNodes:printNodes}})();(function(){"use strict";var lib=modules["lib"];var Obj=modules["object"];var Frame=Obj.extend({init:function(parent){this.variables={};this.parent=parent},set:function(name,val,resolveUp){var parts=name.split(".");var obj=this.variables;var frame=this;if(resolveUp){if(frame=this.resolve(parts[0])){frame.set(name,val);return}frame=this}for(var i=0;i<parts.length-1;i++){var id=parts[i];if(!obj[id]){obj[id]={}}obj=obj[id]}obj[parts[parts.length-1]]=val},get:function(name){var val=this.variables[name];if(val!==undefined&&val!==null){return val}return null},lookup:function(name){var p=this.parent;var val=this.variables[name];if(val!==undefined&&val!==null){return val}return p&&p.lookup(name)},resolve:function(name){var p=this.parent;var val=this.variables[name];if(val!==undefined&&val!==null){return this}return p&&p.resolve(name)},push:function(){return new Frame(this)},pop:function(){return this.parent}});function makeMacro(argNames,kwargNames,func){return function(){var argCount=numArgs(arguments);var args;var kwargs=getKeywordArgs(arguments);if(argCount>argNames.length){args=Array.prototype.slice.call(arguments,0,argNames.length);var vals=Array.prototype.slice.call(arguments,args.length,argCount);for(var i=0;i<vals.length;i++){if(i<kwargNames.length){kwargs[kwargNames[i]]=vals[i]}}args.push(kwargs)}else if(argCount<argNames.length){args=Array.prototype.slice.call(arguments,0,argCount);for(var i=argCount;i<argNames.length;i++){var arg=argNames[i];args.push(kwargs[arg]);delete kwargs[arg]}args.push(kwargs)}else{args=arguments}return func.apply(this,args)}}function makeKeywordArgs(obj){obj.__keywords=true;return obj}function getKeywordArgs(args){var len=args.length;if(len){var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return lastArg}}return{}}function numArgs(args){var len=args.length;if(len===0){return 0}var lastArg=args[len-1];if(lastArg&&lastArg.hasOwnProperty("__keywords")){return len-1}else{return len}}function SafeString(val){if(typeof val!=="string"){return val}this.val=val}SafeString.prototype=Object.create(String.prototype);SafeString.prototype.valueOf=function(){return this.val};SafeString.prototype.toString=function(){return this.val};function copySafeness(dest,target){if(dest instanceof SafeString){return new SafeString(target)}return target.toString()}function markSafe(val){var type=typeof val;if(type==="string"){return new SafeString(val)}else if(type!=="function"){return val}else{return function(){var ret=val.apply(this,arguments);if(typeof ret==="string"){return new SafeString(ret)}return ret}}}function suppressValue(val,autoescape){val=val!==undefined&&val!==null?val:"";if(autoescape&&typeof val==="string"){val=lib.escape(val)}return val}function memberLookup(obj,val){obj=obj||{};if(typeof obj[val]==="function"){return function(){return obj[val].apply(obj,arguments)}}return obj[val]}function callWrap(obj,name,args){if(!obj){throw new Error("Unable to call `"+name+"`, which is undefined or falsey")}else if(typeof obj!=="function"){throw new Error("Unable to call `"+name+"`, which is not a function")}return obj.apply(this,args)}function contextOrFrameLookup(context,frame,name){var val=frame.lookup(name);return val!==undefined&&val!==null?val:context.lookup(name)}function handleError(error,lineno,colno){if(error.lineno){return error}else{return new lib.TemplateError(error,lineno,colno)}}function asyncEach(arr,dimen,iter,cb){if(lib.isArray(arr)){var len=arr.length;lib.asyncIter(arr,function(item,i,next){switch(dimen){case 1:iter(item,i,len,next);break;case 2:iter(item[0],item[1],i,len,next);break;case 3:iter(item[0],item[1],item[2],i,len,next);break;default:item.push(i,next);iter.apply(this,item)}},cb)}else{lib.asyncFor(arr,function(key,val,i,len,next){iter(key,val,i,len,next)},cb)}}function asyncAll(arr,dimen,func,cb){var finished=0;var len;var outputArr;function done(i,output){finished++;outputArr[i]=output;if(finished===len){cb(null,outputArr.join(""))}}if(lib.isArray(arr)){len=arr.length;outputArr=new Array(len);if(len===0){cb(null,"")}else{for(var i=0;i<arr.length;i++){var item=arr[i];switch(dimen){case 1:func(item,i,len,done);break;case 2:func(item[0],item[1],i,len,done);break;case 3:func(item[0],item[1],item[2],i,len,done);break;default:item.push(i,done);func.apply(this,item)}}}}else{var keys=lib.keys(arr);len=keys.length;outputArr=new Array(len);if(len===0){cb(null,"")}else{for(var i=0;i<keys.length;i++){var k=keys[i];func(k,arr[k],i,len,done)}}}}modules["runtime"]={Frame:Frame,makeMacro:makeMacro,makeKeywordArgs:makeKeywordArgs,numArgs:numArgs,suppressValue:suppressValue,memberLookup:memberLookup,contextOrFrameLookup:contextOrFrameLookup,callWrap:callWrap,handleError:handleError,isArray:lib.isArray,keys:lib.keys,SafeString:SafeString,copySafeness:copySafeness,markSafe:markSafe,asyncEach:asyncEach,asyncAll:asyncAll}})();(function(){"use strict";var lib=modules["lib"];var whitespaceChars=" \n	\r ";var delimChars="()[]{}%*-+/#,:|.<>=!";var intChars="0123456789";var BLOCK_START="{%";var BLOCK_END="%}";var VARIABLE_START="{{";var VARIABLE_END="}}";var COMMENT_START="{#";var COMMENT_END="#}";var TOKEN_STRING="string";var TOKEN_WHITESPACE="whitespace";var TOKEN_DATA="data";var TOKEN_BLOCK_START="block-start";var TOKEN_BLOCK_END="block-end";var TOKEN_VARIABLE_START="variable-start";var TOKEN_VARIABLE_END="variable-end";var TOKEN_COMMENT="comment";var TOKEN_LEFT_PAREN="left-paren";var TOKEN_RIGHT_PAREN="right-paren";var TOKEN_LEFT_BRACKET="left-bracket";var TOKEN_RIGHT_BRACKET="right-bracket";var TOKEN_LEFT_CURLY="left-curly";var TOKEN_RIGHT_CURLY="right-curly";var TOKEN_OPERATOR="operator";var TOKEN_COMMA="comma";var TOKEN_COLON="colon";var TOKEN_PIPE="pipe";var TOKEN_INT="int";var TOKEN_FLOAT="float";var TOKEN_BOOLEAN="boolean";var TOKEN_SYMBOL="symbol";var TOKEN_SPECIAL="special";var TOKEN_REGEX="regex";function token(type,value,lineno,colno){return{type:type,value:value,lineno:lineno,colno:colno}}function Tokenizer(str,opts){this.str=str;this.index=0;this.len=str.length;this.lineno=0;this.colno=0;this.in_code=false;opts=opts||{};var tags=opts.tags||{};this.tags={BLOCK_START:tags.blockStart||BLOCK_START,BLOCK_END:tags.blockEnd||BLOCK_END,VARIABLE_START:tags.variableStart||VARIABLE_START,VARIABLE_END:tags.variableEnd||VARIABLE_END,COMMENT_START:tags.commentStart||COMMENT_START,COMMENT_END:tags.commentEnd||COMMENT_END};this.trimBlocks=!!opts.trimBlocks;this.lstripBlocks=!!opts.lstripBlocks}Tokenizer.prototype.nextToken=function(){var lineno=this.lineno;var colno=this.colno;var tok;if(this.in_code){var cur=this.current();if(this.is_finished()){return null}else if(cur==='"'||cur==="'"){return token(TOKEN_STRING,this.parseString(cur),lineno,colno)}else if(tok=this._extract(whitespaceChars)){return token(TOKEN_WHITESPACE,tok,lineno,colno)}else if((tok=this._extractString(this.tags.BLOCK_END))||(tok=this._extractString("-"+this.tags.BLOCK_END))){this.in_code=false;if(this.trimBlocks){cur=this.current();if(cur==="\n"){this.forward()}}return token(TOKEN_BLOCK_END,tok,lineno,colno)}else if(tok=this._extractString(this.tags.VARIABLE_END)){this.in_code=false;return token(TOKEN_VARIABLE_END,tok,lineno,colno)}else if(cur==="r"&&this.str.charAt(this.index+1)==="/"){this.forwardN(2);var regexBody="";while(!this.is_finished()){if(this.current()==="/"&&this.previous()!=="\\"){this.forward();break}else{regexBody+=this.current();this.forward()}}var POSSIBLE_FLAGS=["g","i","m","y"];var regexFlags="";while(!this.is_finished()){var isCurrentAFlag=POSSIBLE_FLAGS.indexOf(this.current())!==-1;if(isCurrentAFlag){regexFlags+=this.current();this.forward()}else{break}}return token(TOKEN_REGEX,{body:regexBody,flags:regexFlags},lineno,colno)}else if(delimChars.indexOf(cur)!==-1){this.forward();var complexOps=["==","!=","<=",">=","//","**"];var curComplex=cur+this.current();var type;if(lib.indexOf(complexOps,curComplex)!==-1){this.forward();cur=curComplex}switch(cur){case"(":type=TOKEN_LEFT_PAREN;break;case")":type=TOKEN_RIGHT_PAREN;break;case"[":type=TOKEN_LEFT_BRACKET;break;case"]":type=TOKEN_RIGHT_BRACKET;break;case"{":type=TOKEN_LEFT_CURLY;break;case"}":type=TOKEN_RIGHT_CURLY;break;case",":type=TOKEN_COMMA;break;case":":type=TOKEN_COLON;break;case"|":type=TOKEN_PIPE;break;default:type=TOKEN_OPERATOR}return token(type,cur,lineno,colno)}else{tok=this._extractUntil(whitespaceChars+delimChars);if(tok.match(/^[-+]?[0-9]+$/)){if(this.current()==="."){this.forward();var dec=this._extract(intChars);return token(TOKEN_FLOAT,tok+"."+dec,lineno,colno)}else{return token(TOKEN_INT,tok,lineno,colno)}}else if(tok.match(/^(true|false)$/)){return token(TOKEN_BOOLEAN,tok,lineno,colno)}else if(tok){return token(TOKEN_SYMBOL,tok,lineno,colno)}else{throw new Error("Unexpected value while parsing: "+tok)}}}else{var beginChars=this.tags.BLOCK_START.charAt(0)+this.tags.VARIABLE_START.charAt(0)+this.tags.COMMENT_START.charAt(0)+this.tags.COMMENT_END.charAt(0);if(this.is_finished()){return null}else if((tok=this._extractString(this.tags.BLOCK_START+"-"))||(tok=this._extractString(this.tags.BLOCK_START))){this.in_code=true;return token(TOKEN_BLOCK_START,tok,lineno,colno)}else if(tok=this._extractString(this.tags.VARIABLE_START)){this.in_code=true;return token(TOKEN_VARIABLE_START,tok,lineno,colno)}else{tok="";var data;var in_comment=false;if(this._matches(this.tags.COMMENT_START)){in_comment=true;tok=this._extractString(this.tags.COMMENT_START)}while((data=this._extractUntil(beginChars))!==null){tok+=data;if((this._matches(this.tags.BLOCK_START)||this._matches(this.tags.VARIABLE_START)||this._matches(this.tags.COMMENT_START))&&!in_comment){if(this.lstripBlocks&&this._matches(this.tags.BLOCK_START)&&this.colno>0&&this.colno<=tok.length){var lastLine=tok.slice(-this.colno);if(/^\s+$/.test(lastLine)){tok=tok.slice(0,-this.colno);if(!tok.length){return this.nextToken()}}}break}else if(this._matches(this.tags.COMMENT_END)){if(!in_comment){throw new Error("unexpected end of comment")}tok+=this._extractString(this.tags.COMMENT_END);break}else{tok+=this.current();this.forward()}}if(data===null&&in_comment){throw new Error("expected end of comment, got end of file")}return token(in_comment?TOKEN_COMMENT:TOKEN_DATA,tok,lineno,colno)}}throw new Error("Could not parse text")};Tokenizer.prototype.parseString=function(delimiter){this.forward();var lineno=this.lineno;var colno=this.colno;var str="";while(!this.is_finished()&&this.current()!==delimiter){var cur=this.current();if(cur==="\\"){this.forward();switch(this.current()){case"n":str+="\n";break;case"t":str+="	";break;case"r":str+="\r";break;default:str+=this.current()}this.forward()}else{str+=cur;this.forward()}}this.forward();return str};Tokenizer.prototype._matches=function(str){if(this.index+str.length>this.len){return null}var m=this.str.slice(this.index,this.index+str.length);return m===str};Tokenizer.prototype._extractString=function(str){if(this._matches(str)){this.index+=str.length;return str}return null};Tokenizer.prototype._extractUntil=function(charString){return this._extractMatching(true,charString||"")};Tokenizer.prototype._extract=function(charString){return this._extractMatching(false,charString)};Tokenizer.prototype._extractMatching=function(breakOnMatch,charString){if(this.is_finished()){return null}var first=charString.indexOf(this.current());if(breakOnMatch&&first===-1||!breakOnMatch&&first!==-1){var t=this.current();this.forward();var idx=charString.indexOf(this.current());while((breakOnMatch&&idx===-1||!breakOnMatch&&idx!==-1)&&!this.is_finished()){t+=this.current();this.forward();idx=charString.indexOf(this.current())}return t}return""};Tokenizer.prototype.is_finished=function(){return this.index>=this.len};Tokenizer.prototype.forwardN=function(n){for(var i=0;i<n;i++){this.forward()}};Tokenizer.prototype.forward=function(){this.index++;if(this.previous()==="\n"){this.lineno++;this.colno=0}else{this.colno++}};Tokenizer.prototype.back=function(){this.index--;if(this.current()==="\n"){this.lineno--;var idx=this.src.lastIndexOf("\n",this.index-1);if(idx===-1){this.colno=this.index}else{this.colno=this.index-idx}}else{this.colno--}};Tokenizer.prototype.current=function(){if(!this.is_finished()){return this.str.charAt(this.index)}return""};Tokenizer.prototype.previous=function(){return this.str.charAt(this.index-1)};modules["lexer"]={lex:function(src,opts){return new Tokenizer(src,opts)},TOKEN_STRING:TOKEN_STRING,TOKEN_WHITESPACE:TOKEN_WHITESPACE,TOKEN_DATA:TOKEN_DATA,TOKEN_BLOCK_START:TOKEN_BLOCK_START,TOKEN_BLOCK_END:TOKEN_BLOCK_END,TOKEN_VARIABLE_START:TOKEN_VARIABLE_START,TOKEN_VARIABLE_END:TOKEN_VARIABLE_END,TOKEN_COMMENT:TOKEN_COMMENT,TOKEN_LEFT_PAREN:TOKEN_LEFT_PAREN,TOKEN_RIGHT_PAREN:TOKEN_RIGHT_PAREN,TOKEN_LEFT_BRACKET:TOKEN_LEFT_BRACKET,TOKEN_RIGHT_BRACKET:TOKEN_RIGHT_BRACKET,TOKEN_LEFT_CURLY:TOKEN_LEFT_CURLY,TOKEN_RIGHT_CURLY:TOKEN_RIGHT_CURLY,TOKEN_OPERATOR:TOKEN_OPERATOR,TOKEN_COMMA:TOKEN_COMMA,TOKEN_COLON:TOKEN_COLON,TOKEN_PIPE:TOKEN_PIPE,TOKEN_INT:TOKEN_INT,TOKEN_FLOAT:TOKEN_FLOAT,TOKEN_BOOLEAN:TOKEN_BOOLEAN,TOKEN_SYMBOL:TOKEN_SYMBOL,TOKEN_SPECIAL:TOKEN_SPECIAL,TOKEN_REGEX:TOKEN_REGEX}})();(function(){"use strict";var lexer=modules["lexer"];var nodes=modules["nodes"];var Object=modules["object"];var lib=modules["lib"];var Parser=Object.extend({init:function(tokens){this.tokens=tokens;this.peeked=null;this.breakOnBlocks=null;this.dropLeadingWhitespace=false;this.extensions=[]},nextToken:function(withWhitespace){var tok;if(this.peeked){if(!withWhitespace&&this.peeked.type===lexer.TOKEN_WHITESPACE){this.peeked=null}else{tok=this.peeked;this.peeked=null;return tok}}tok=this.tokens.nextToken();if(!withWhitespace){while(tok&&tok.type===lexer.TOKEN_WHITESPACE){tok=this.tokens.nextToken()}}return tok},peekToken:function(){this.peeked=this.peeked||this.nextToken();return this.peeked},pushToken:function(tok){if(this.peeked){throw new Error("pushToken: can only push one token on between reads")}this.peeked=tok},fail:function(msg,lineno,colno){if((lineno===undefined||colno===undefined)&&this.peekToken()){var tok=this.peekToken();lineno=tok.lineno;colno=tok.colno}if(lineno!==undefined)lineno+=1;if(colno!==undefined)colno+=1;throw new lib.TemplateError(msg,lineno,colno)},skip:function(type){var tok=this.nextToken();if(!tok||tok.type!==type){this.pushToken(tok);return false}return true},expect:function(type){var tok=this.nextToken();if(tok.type!==type){this.fail("expected "+type+", got "+tok.type,tok.lineno,tok.colno)}return tok},skipValue:function(type,val){var tok=this.nextToken();if(!tok||tok.type!==type||tok.value!==val){this.pushToken(tok);return false}return true},skipWhitespace:function(){return this.skip(lexer.TOKEN_WHITESPACE)},skipSymbol:function(val){return this.skipValue(lexer.TOKEN_SYMBOL,val)},advanceAfterBlockEnd:function(name){if(!name){var tok=this.peekToken();if(!tok){this.fail("unexpected end of file")}if(tok.type!==lexer.TOKEN_SYMBOL){this.fail("advanceAfterBlockEnd: expected symbol token or "+"explicit name to be passed")}name=this.nextToken().value}var tok=this.nextToken();if(tok&&tok.type===lexer.TOKEN_BLOCK_END){if(tok.value.charAt(0)==="-"){this.dropLeadingWhitespace=true}}else{this.fail("expected block end in "+name+" statement")}},advanceAfterVariableEnd:function(){if(!this.skip(lexer.TOKEN_VARIABLE_END)){this.fail("expected variable end")}},parseFor:function(){var forTok=this.peekToken();var node;var endBlock;if(this.skipSymbol("for")){node=new nodes.For(forTok.lineno,forTok.colno);endBlock="endfor"}else if(this.skipSymbol("asyncEach")){node=new nodes.AsyncEach(forTok.lineno,forTok.colno);endBlock="endeach"}else if(this.skipSymbol("asyncAll")){node=new nodes.AsyncAll(forTok.lineno,forTok.colno);endBlock="endall"}else{this.fail("parseFor: expected for{Async}",forTok.lineno,forTok.colno)}node.name=this.parsePrimary();if(!(node.name instanceof nodes.Symbol)){this.fail("parseFor: variable name expected for loop")}var type=this.peekToken().type;if(type===lexer.TOKEN_COMMA){var key=node.name;node.name=new nodes.Array(key.lineno,key.colno);node.name.addChild(key);while(this.skip(lexer.TOKEN_COMMA)){var prim=this.parsePrimary();node.name.addChild(prim)}}if(!this.skipSymbol("in")){this.fail('parseFor: expected "in" keyword for loop',forTok.lineno,forTok.colno)}node.arr=this.parseExpression();this.advanceAfterBlockEnd(forTok.value);node.body=this.parseUntilBlocks(endBlock,"else");if(this.skipSymbol("else")){this.advanceAfterBlockEnd("else");node.else_=this.parseUntilBlocks(endBlock)}this.advanceAfterBlockEnd();return node},parseMacro:function(){var macroTok=this.peekToken();if(!this.skipSymbol("macro")){this.fail("expected macro")}var name=this.parsePrimary(true);var args=this.parseSignature();var node=new nodes.Macro(macroTok.lineno,macroTok.colno,name,args);this.advanceAfterBlockEnd(macroTok.value);node.body=this.parseUntilBlocks("endmacro");this.advanceAfterBlockEnd();return node},parseCall:function(){var callTok=this.peekToken();if(!this.skipSymbol("call")){this.fail("expected call")}var callerArgs=this.parseSignature(true)||new nodes.NodeList;var macroCall=this.parsePrimary();this.advanceAfterBlockEnd(callTok.value);var body=this.parseUntilBlocks("endcall");this.advanceAfterBlockEnd();var callerName=new nodes.Symbol(callTok.lineno,callTok.colno,"caller");var callerNode=new nodes.Caller(callTok.lineno,callTok.colno,callerName,callerArgs,body);var args=macroCall.args.children;if(!(args[args.length-1]instanceof nodes.KeywordArgs)){args.push(new nodes.KeywordArgs)}var kwargs=args[args.length-1];kwargs.addChild(new nodes.Pair(callTok.lineno,callTok.colno,callerName,callerNode));return new nodes.Output(callTok.lineno,callTok.colno,[macroCall])},parseWithContext:function(){var tok=this.peekToken();var withContext=null;if(this.skipSymbol("with")){withContext=true}else if(this.skipSymbol("without")){withContext=false}if(withContext!==null){if(!this.skipSymbol("context")){this.fail("parseFrom: expected context after with/without",tok.lineno,tok.colno)}}return withContext},parseImport:function(){var importTok=this.peekToken();if(!this.skipSymbol("import")){this.fail("parseImport: expected import",importTok.lineno,importTok.colno)}var template=this.parseExpression();if(!this.skipSymbol("as")){this.fail('parseImport: expected "as" keyword',importTok.lineno,importTok.colno)}var target=this.parsePrimary();var withContext=this.parseWithContext();var node=new nodes.Import(importTok.lineno,importTok.colno,template,target,withContext);this.advanceAfterBlockEnd(importTok.value);return node},parseFrom:function(){var fromTok=this.peekToken();if(!this.skipSymbol("from")){this.fail("parseFrom: expected from")}var template=this.parsePrimary();if(!this.skipSymbol("import")){this.fail("parseFrom: expected import",fromTok.lineno,fromTok.colno)}var names=new nodes.NodeList,withContext;while(1){var nextTok=this.peekToken();if(nextTok.type===lexer.TOKEN_BLOCK_END){if(!names.children.length){this.fail("parseFrom: Expected at least one import name",fromTok.lineno,fromTok.colno)}if(nextTok.value.charAt(0)==="-"){this.dropLeadingWhitespace=true}this.nextToken();break}if(names.children.length>0&&!this.skip(lexer.TOKEN_COMMA)){this.fail("parseFrom: expected comma",fromTok.lineno,fromTok.colno)}var name=this.parsePrimary();if(name.value.charAt(0)==="_"){this.fail("parseFrom: names starting with an underscore "+"cannot be imported",name.lineno,name.colno)}if(this.skipSymbol("as")){var alias=this.parsePrimary();names.addChild(new nodes.Pair(name.lineno,name.colno,name,alias))}else{names.addChild(name)}withContext=this.parseWithContext()}return new nodes.FromImport(fromTok.lineno,fromTok.colno,template,names,withContext)},parseBlock:function(){var tag=this.peekToken();if(!this.skipSymbol("block")){this.fail("parseBlock: expected block",tag.lineno,tag.colno)}var node=new nodes.Block(tag.lineno,tag.colno);node.name=this.parsePrimary();if(!(node.name instanceof nodes.Symbol)){this.fail("parseBlock: variable name expected",tag.lineno,tag.colno)}this.advanceAfterBlockEnd(tag.value);node.body=this.parseUntilBlocks("endblock");if(!this.peekToken()){this.fail("parseBlock: expected endblock, got end of file")}this.advanceAfterBlockEnd();return node},parseTemplateRef:function(tagName,nodeType){var tag=this.peekToken();if(!this.skipSymbol(tagName)){this.fail("parseTemplateRef: expected "+tagName)}var node=new nodeType(tag.lineno,tag.colno);node.template=this.parseExpression();this.advanceAfterBlockEnd(tag.value);return node},parseExtends:function(){return this.parseTemplateRef("extends",nodes.Extends)},parseInclude:function(){return this.parseTemplateRef("include",nodes.Include)},parseIf:function(){var tag=this.peekToken();var node;if(this.skipSymbol("if")||this.skipSymbol("elif")){node=new nodes.If(tag.lineno,tag.colno)}else if(this.skipSymbol("ifAsync")){node=new nodes.IfAsync(tag.lineno,tag.colno)}else{this.fail("parseIf: expected if or elif",tag.lineno,tag.colno)}node.cond=this.parseExpression();this.advanceAfterBlockEnd(tag.value);node.body=this.parseUntilBlocks("elif","else","endif");var tok=this.peekToken();switch(tok&&tok.value){case"elif":node.else_=this.parseIf();break;case"else":this.advanceAfterBlockEnd();node.else_=this.parseUntilBlocks("endif");this.advanceAfterBlockEnd();break;case"endif":node.else_=null;this.advanceAfterBlockEnd();break;default:this.fail("parseIf: expected endif, else, or endif, "+"got end of file")}return node},parseSet:function(){var tag=this.peekToken();if(!this.skipSymbol("set")){this.fail("parseSet: expected set",tag.lineno,tag.colno)}var node=new nodes.Set(tag.lineno,tag.colno,[]);var target;
+while(target=this.parsePrimary()){node.targets.push(target);if(!this.skip(lexer.TOKEN_COMMA)){break}}if(!this.skipValue(lexer.TOKEN_OPERATOR,"=")){this.fail("parseSet: expected = in set tag",tag.lineno,tag.colno)}node.value=this.parseExpression();this.advanceAfterBlockEnd(tag.value);return node},parseStatement:function(){var tok=this.peekToken();var node;if(tok.type!==lexer.TOKEN_SYMBOL){this.fail("tag name expected",tok.lineno,tok.colno)}if(this.breakOnBlocks&&lib.indexOf(this.breakOnBlocks,tok.value)!==-1){return null}switch(tok.value){case"raw":return this.parseRaw();case"if":case"ifAsync":return this.parseIf();case"for":case"asyncEach":case"asyncAll":return this.parseFor();case"block":return this.parseBlock();case"extends":return this.parseExtends();case"include":return this.parseInclude();case"set":return this.parseSet();case"macro":return this.parseMacro();case"call":return this.parseCall();case"import":return this.parseImport();case"from":return this.parseFrom();default:if(this.extensions.length){for(var i=0;i<this.extensions.length;i++){var ext=this.extensions[i];if(lib.indexOf(ext.tags||[],tok.value)!==-1){return ext.parse(this,nodes,lexer)}}}this.fail("unknown block tag: "+tok.value,tok.lineno,tok.colno)}return node},parseRaw:function(){this.advanceAfterBlockEnd();var str="";var begun=this.peekToken();while(1){var tok=this.nextToken(true);if(!tok){this.fail("expected endraw, got end of file")}if(tok.type===lexer.TOKEN_BLOCK_START){var ws=null;var name=this.nextToken(true);if(name.type===lexer.TOKEN_WHITESPACE){ws=name;name=this.nextToken()}if(name.type===lexer.TOKEN_SYMBOL&&name.value==="endraw"){this.advanceAfterBlockEnd(name.value);break}else{str+=tok.value;if(ws){str+=ws.value}str+=name.value}}else if(tok.type===lexer.TOKEN_STRING){str+='"'+tok.value+'"'}else{str+=tok.value}}var output=new nodes.Output(begun.lineno,begun.colno,[new nodes.TemplateData(begun.lineno,begun.colno,str)]);return output},parsePostfix:function(node){var tok=this.peekToken();while(tok){if(tok.type===lexer.TOKEN_LEFT_PAREN){node=new nodes.FunCall(tok.lineno,tok.colno,node,this.parseSignature())}else if(tok.type===lexer.TOKEN_LEFT_BRACKET){var lookup=this.parseAggregate();if(lookup.children.length>1){this.fail("invalid index")}node=new nodes.LookupVal(tok.lineno,tok.colno,node,lookup.children[0])}else if(tok.type===lexer.TOKEN_OPERATOR&&tok.value==="."){this.nextToken();var val=this.nextToken();if(val.type!==lexer.TOKEN_SYMBOL){this.fail("expected name as lookup value, got "+val.value,val.lineno,val.colno)}var lookup=new nodes.Literal(val.lineno,val.colno,val.value);node=new nodes.LookupVal(tok.lineno,tok.colno,node,lookup)}else{break}tok=this.peekToken()}return node},parseExpression:function(){var node=this.parseInlineIf();return node},parseInlineIf:function(){var node=this.parseOr();if(this.skipSymbol("if")){var cond_node=this.parseOr();var body_node=node;node=new nodes.InlineIf(node.lineno,node.colno);node.body=body_node;node.cond=cond_node;if(this.skipSymbol("else")){node.else_=this.parseOr()}else{node.else_=null}}return node},parseOr:function(){var node=this.parseAnd();while(this.skipSymbol("or")){var node2=this.parseAnd();node=new nodes.Or(node.lineno,node.colno,node,node2)}return node},parseAnd:function(){var node=this.parseNot();while(this.skipSymbol("and")){var node2=this.parseNot();node=new nodes.And(node.lineno,node.colno,node,node2)}return node},parseNot:function(){var tok=this.peekToken();if(this.skipSymbol("not")){return new nodes.Not(tok.lineno,tok.colno,this.parseNot())}return this.parseIn()},parseIn:function(){var node=this.parseCompare();while(1){var tok=this.nextToken();if(!tok){break}var invert=tok.type===lexer.TOKEN_SYMBOL&&tok.value==="not";if(!invert){this.pushToken(tok)}if(this.skipSymbol("in")){var node2=this.parseCompare();node=new nodes.In(node.lineno,node.colno,node,node2);if(invert){node=new nodes.Not(node.lineno,node.colno,node)}}else{if(invert){this.pushToken(tok)}break}}return node},parseCompare:function(){var compareOps=["==","!=","<",">","<=",">="];var expr=this.parseAdd();var ops=[];while(1){var tok=this.nextToken();if(!tok){break}else if(lib.indexOf(compareOps,tok.value)!==-1){ops.push(new nodes.CompareOperand(tok.lineno,tok.colno,this.parseAdd(),tok.value))}else{this.pushToken(tok);break}}if(ops.length){return new nodes.Compare(ops[0].lineno,ops[0].colno,expr,ops)}else{return expr}},parseAdd:function(){var node=this.parseSub();while(this.skipValue(lexer.TOKEN_OPERATOR,"+")){var node2=this.parseSub();node=new nodes.Add(node.lineno,node.colno,node,node2)}return node},parseSub:function(){var node=this.parseMul();while(this.skipValue(lexer.TOKEN_OPERATOR,"-")){var node2=this.parseMul();node=new nodes.Sub(node.lineno,node.colno,node,node2)}return node},parseMul:function(){var node=this.parseDiv();while(this.skipValue(lexer.TOKEN_OPERATOR,"*")){var node2=this.parseDiv();node=new nodes.Mul(node.lineno,node.colno,node,node2)}return node},parseDiv:function(){var node=this.parseFloorDiv();while(this.skipValue(lexer.TOKEN_OPERATOR,"/")){var node2=this.parseFloorDiv();node=new nodes.Div(node.lineno,node.colno,node,node2)}return node},parseFloorDiv:function(){var node=this.parseMod();while(this.skipValue(lexer.TOKEN_OPERATOR,"//")){var node2=this.parseMod();node=new nodes.FloorDiv(node.lineno,node.colno,node,node2)}return node},parseMod:function(){var node=this.parsePow();while(this.skipValue(lexer.TOKEN_OPERATOR,"%")){var node2=this.parsePow();node=new nodes.Mod(node.lineno,node.colno,node,node2)}return node},parsePow:function(){var node=this.parseUnary();while(this.skipValue(lexer.TOKEN_OPERATOR,"**")){var node2=this.parseUnary();node=new nodes.Pow(node.lineno,node.colno,node,node2)}return node},parseUnary:function(noFilters){var tok=this.peekToken();var node;if(this.skipValue(lexer.TOKEN_OPERATOR,"-")){node=new nodes.Neg(tok.lineno,tok.colno,this.parseUnary(true))}else if(this.skipValue(lexer.TOKEN_OPERATOR,"+")){node=new nodes.Pos(tok.lineno,tok.colno,this.parseUnary(true))}else{node=this.parsePrimary()}if(!noFilters){node=this.parseFilter(node)}return node},parsePrimary:function(noPostfix){var tok=this.nextToken();var val=null;var node=null;if(!tok){this.fail("expected expression, got end of file")}else if(tok.type===lexer.TOKEN_STRING){val=tok.value}else if(tok.type===lexer.TOKEN_INT){val=parseInt(tok.value,10)}else if(tok.type===lexer.TOKEN_FLOAT){val=parseFloat(tok.value)}else if(tok.type===lexer.TOKEN_BOOLEAN){if(tok.value==="true"){val=true}else if(tok.value==="false"){val=false}else{this.fail("invalid boolean: "+tok.value,tok.lineno,tok.colno)}}else if(tok.type===lexer.TOKEN_REGEX){val=new RegExp(tok.value.body,tok.value.flags)}if(val!==null){node=new nodes.Literal(tok.lineno,tok.colno,val)}else if(tok.type===lexer.TOKEN_SYMBOL){node=new nodes.Symbol(tok.lineno,tok.colno,tok.value);if(!noPostfix){node=this.parsePostfix(node)}}else{this.pushToken(tok);node=this.parseAggregate()}if(node){return node}else{this.fail("unexpected token: "+tok.value,tok.lineno,tok.colno)}},parseFilter:function(node){while(this.skip(lexer.TOKEN_PIPE)){var tok=this.expect(lexer.TOKEN_SYMBOL);var name=tok.value;while(this.skipValue(lexer.TOKEN_OPERATOR,".")){name+="."+this.expect(lexer.TOKEN_SYMBOL).value}node=new nodes.Filter(tok.lineno,tok.colno,new nodes.Symbol(tok.lineno,tok.colno,name),new nodes.NodeList(tok.lineno,tok.colno,[node]));if(this.peekToken().type===lexer.TOKEN_LEFT_PAREN){var call=this.parsePostfix(node);node.args.children=node.args.children.concat(call.args.children)}}return node},parseAggregate:function(){var tok=this.nextToken();var node;switch(tok.type){case lexer.TOKEN_LEFT_PAREN:node=new nodes.Group(tok.lineno,tok.colno);break;case lexer.TOKEN_LEFT_BRACKET:node=new nodes.Array(tok.lineno,tok.colno);break;case lexer.TOKEN_LEFT_CURLY:node=new nodes.Dict(tok.lineno,tok.colno);break;default:return null}while(1){var type=this.peekToken().type;if(type===lexer.TOKEN_RIGHT_PAREN||type===lexer.TOKEN_RIGHT_BRACKET||type===lexer.TOKEN_RIGHT_CURLY){this.nextToken();break}if(node.children.length>0){if(!this.skip(lexer.TOKEN_COMMA)){this.fail("parseAggregate: expected comma after expression",tok.lineno,tok.colno)}}if(node instanceof nodes.Dict){var key=this.parsePrimary();if(!this.skip(lexer.TOKEN_COLON)){this.fail("parseAggregate: expected colon after dict key",tok.lineno,tok.colno)}var value=this.parseExpression();node.addChild(new nodes.Pair(key.lineno,key.colno,key,value))}else{var expr=this.parseExpression();node.addChild(expr)}}return node},parseSignature:function(tolerant,noParens){var tok=this.peekToken();if(!noParens&&tok.type!==lexer.TOKEN_LEFT_PAREN){if(tolerant){return null}else{this.fail("expected arguments",tok.lineno,tok.colno)}}if(tok.type===lexer.TOKEN_LEFT_PAREN){tok=this.nextToken()}var args=new nodes.NodeList(tok.lineno,tok.colno);var kwargs=new nodes.KeywordArgs(tok.lineno,tok.colno);var kwnames=[];var checkComma=false;while(1){tok=this.peekToken();if(!noParens&&tok.type===lexer.TOKEN_RIGHT_PAREN){this.nextToken();break}else if(noParens&&tok.type===lexer.TOKEN_BLOCK_END){break}if(checkComma&&!this.skip(lexer.TOKEN_COMMA)){this.fail("parseSignature: expected comma after expression",tok.lineno,tok.colno)}else{var arg=this.parseExpression();if(this.skipValue(lexer.TOKEN_OPERATOR,"=")){kwargs.addChild(new nodes.Pair(arg.lineno,arg.colno,arg,this.parseExpression()))}else{args.addChild(arg)}}checkComma=true}if(kwargs.children.length){args.addChild(kwargs)}return args},parseUntilBlocks:function(){var prev=this.breakOnBlocks;this.breakOnBlocks=lib.toArray(arguments);var ret=this.parse();this.breakOnBlocks=prev;return ret},parseNodes:function(){var tok;var buf=[];while(tok=this.nextToken()){if(tok.type===lexer.TOKEN_DATA){var data=tok.value;var nextToken=this.peekToken();var nextVal=nextToken&&nextToken.value;if(this.dropLeadingWhitespace){data=data.replace(/^\s*/,"");this.dropLeadingWhitespace=false}if(nextToken&&nextToken.type===lexer.TOKEN_BLOCK_START&&nextVal.charAt(nextVal.length-1)==="-"){data=data.replace(/\s*$/,"")}buf.push(new nodes.Output(tok.lineno,tok.colno,[new nodes.TemplateData(tok.lineno,tok.colno,data)]))}else if(tok.type===lexer.TOKEN_BLOCK_START){var n=this.parseStatement();if(!n){break}buf.push(n)}else if(tok.type===lexer.TOKEN_VARIABLE_START){var e=this.parseExpression();this.advanceAfterVariableEnd();buf.push(new nodes.Output(tok.lineno,tok.colno,[e]))}else if(tok.type!==lexer.TOKEN_COMMENT){this.fail("Unexpected token at top-level: "+tok.type,tok.lineno,tok.colno)}}return buf},parse:function(){return new nodes.NodeList(0,0,this.parseNodes())},parseAsRoot:function(){return new nodes.Root(0,0,this.parseNodes())}});modules["parser"]={parse:function(src,extensions,opts){var p=new Parser(lexer.lex(src,opts));if(extensions!==undefined){p.extensions=extensions}return p.parseAsRoot()}}})();(function(){"use strict";var nodes=modules["nodes"];var lib=modules["lib"];var sym=0;function gensym(){return"hole_"+sym++}function mapCOW(arr,func){var res=null;for(var i=0;i<arr.length;i++){var item=func(arr[i]);if(item!==arr[i]){if(!res){res=arr.slice()}res[i]=item}}return res||arr}function walk(ast,func,depthFirst){if(!(ast instanceof nodes.Node)){return ast}if(!depthFirst){var astT=func(ast);if(astT&&astT!==ast){return astT}}if(ast instanceof nodes.NodeList){var children=mapCOW(ast.children,function(node){return walk(node,func,depthFirst)});if(children!==ast.children){ast=new nodes[ast.typename](ast.lineno,ast.colno,children)}}else if(ast instanceof nodes.CallExtension){var args=walk(ast.args,func,depthFirst);var contentArgs=mapCOW(ast.contentArgs,function(node){return walk(node,func,depthFirst)});if(args!==ast.args||contentArgs!==ast.contentArgs){ast=new nodes[ast.typename](ast.extName,ast.prop,args,contentArgs)}}else{var props=ast.fields.map(function(field){return ast[field]});var propsT=mapCOW(props,function(prop){return walk(prop,func,depthFirst)});if(propsT!==props){ast=new nodes[ast.typename](ast.lineno,ast.colno);propsT.forEach(function(prop,i){ast[ast.fields[i]]=prop})}}return depthFirst?func(ast)||ast:ast}function depthWalk(ast,func){return walk(ast,func,true)}function _liftFilters(node,asyncFilters,prop){var children=[];var walked=depthWalk(prop?node[prop]:node,function(node){if(node instanceof nodes.Block){return node}else if(node instanceof nodes.Filter&&lib.indexOf(asyncFilters,node.name.value)!==-1||node instanceof nodes.CallExtensionAsync){var symbol=new nodes.Symbol(node.lineno,node.colno,gensym());children.push(new nodes.FilterAsync(node.lineno,node.colno,node.name,node.args,symbol));return symbol}});if(prop){node[prop]=walked}else{node=walked}if(children.length){children.push(node);return new nodes.NodeList(node.lineno,node.colno,children)}else{return node}}function liftFilters(ast,asyncFilters){return depthWalk(ast,function(node){if(node instanceof nodes.Output){return _liftFilters(node,asyncFilters)}else if(node instanceof nodes.For){return _liftFilters(node,asyncFilters,"arr")}else if(node instanceof nodes.If){return _liftFilters(node,asyncFilters,"cond")}else if(node instanceof nodes.CallExtension){return _liftFilters(node,asyncFilters,"args")}})}function liftSuper(ast){return walk(ast,function(blockNode){if(!(blockNode instanceof nodes.Block)){return}var hasSuper=false;var symbol=gensym();blockNode.body=walk(blockNode.body,function(node){if(node instanceof nodes.FunCall&&node.name.value==="super"){hasSuper=true;return new nodes.Symbol(node.lineno,node.colno,symbol)}});if(hasSuper){blockNode.body.children.unshift(new nodes.Super(0,0,blockNode.name,new nodes.Symbol(0,0,symbol)))}})}function convertStatements(ast){return depthWalk(ast,function(node){if(!(node instanceof nodes.If)&&!(node instanceof nodes.For)){return}var async=false;walk(node,function(node){if(node instanceof nodes.FilterAsync||node instanceof nodes.IfAsync||node instanceof nodes.AsyncEach||node instanceof nodes.AsyncAll||node instanceof nodes.CallExtensionAsync){async=true;return node}});if(async){if(node instanceof nodes.If){return new nodes.IfAsync(node.lineno,node.colno,node.cond,node.body,node.else_)}else if(node instanceof nodes.For){return new nodes.AsyncEach(node.lineno,node.colno,node.arr,node.name,node.body,node.else_)}}})}function cps(ast,asyncFilters){return convertStatements(liftSuper(liftFilters(ast,asyncFilters)))}function transform(ast,asyncFilters,name){return cps(ast,asyncFilters||[])}modules["transformer"]={transform:transform}})();(function(){"use strict";var lib=modules["lib"];var parser=modules["parser"];var transformer=modules["transformer"];var nodes=modules["nodes"];var Object=modules["object"];var Frame=modules["runtime"].Frame;var compareOps={"==":"==","!=":"!=","<":"<",">":">","<=":"<=",">=":">="};function binOpEmitter(str){return function(node,frame){this.compile(node.left,frame);this.emit(str);this.compile(node.right,frame)}}var Compiler=Object.extend({init:function(templateName){this.templateName=templateName;this.codebuf=[];this.lastId=0;this.buffer=null;this.bufferStack=[];this.isChild=false;this.scopeClosers=""},fail:function(msg,lineno,colno){if(lineno!==undefined)lineno+=1;if(colno!==undefined)colno+=1;throw new lib.TemplateError(msg,lineno,colno)},pushBufferId:function(id){this.bufferStack.push(this.buffer);this.buffer=id;this.emit("var "+this.buffer+' = "";')},popBufferId:function(){this.buffer=this.bufferStack.pop()},emit:function(code){this.codebuf.push(code)},emitLine:function(code){this.emit(code+"\n")},emitLines:function(){lib.each(lib.toArray(arguments),function(line){this.emitLine(line)},this)},emitFuncBegin:function(name){this.buffer="output";this.scopeClosers="";this.emitLine("function "+name+"(env, context, frame, runtime, cb) {");this.emitLine("var lineno = null;");this.emitLine("var colno = null;");this.emitLine("var "+this.buffer+' = "";');this.emitLine("try {")},emitFuncEnd:function(noReturn){if(!noReturn){this.emitLine("cb(null, "+this.buffer+");")}this.closeScopeLevels();this.emitLine("} catch (e) {");this.emitLine("  cb(runtime.handleError(e, lineno, colno));");this.emitLine("}");this.emitLine("}");this.buffer=null},addScopeLevel:function(){this.scopeClosers+="})"},closeScopeLevels:function(){this.emitLine(this.scopeClosers+";");this.scopeClosers=""},withScopedSyntax:function(func){var scopeClosers=this.scopeClosers;this.scopeClosers="";func.call(this);this.closeScopeLevels();this.scopeClosers=scopeClosers},makeCallback:function(res){var err=this.tmpid();return"function("+err+(res?","+res:"")+") {\n"+"if("+err+") { cb("+err+"); return; }"},tmpid:function(){this.lastId++;return"t_"+this.lastId},_templateName:function(){return this.templateName==null?"undefined":JSON.stringify(this.templateName)},_bufferAppend:function(func){this.emit(this.buffer+" += runtime.suppressValue(");func.call(this);this.emit(", env.opts.autoescape);\n")},_compileChildren:function(node,frame){var children=node.children;for(var i=0,l=children.length;i<l;i++){this.compile(children[i],frame)}},_compileAggregate:function(node,frame,startChar,endChar){if(startChar){this.emit(startChar)}for(var i=0;i<node.children.length;i++){if(i>0){this.emit(",")}this.compile(node.children[i],frame)}if(endChar){this.emit(endChar)}},_compileExpression:function(node,frame){this.assertType(node,nodes.Literal,nodes.Symbol,nodes.Group,nodes.Array,nodes.Dict,nodes.FunCall,nodes.Caller,nodes.Filter,nodes.LookupVal,nodes.Compare,nodes.InlineIf,nodes.In,nodes.And,nodes.Or,nodes.Not,nodes.Add,nodes.Sub,nodes.Mul,nodes.Div,nodes.FloorDiv,nodes.Mod,nodes.Pow,nodes.Neg,nodes.Pos,nodes.Compare,nodes.NodeList);this.compile(node,frame)},assertType:function(node){var types=lib.toArray(arguments).slice(1);var success=false;for(var i=0;i<types.length;i++){if(node instanceof types[i]){success=true}}if(!success){this.fail("assertType: invalid type: "+node.typename,node.lineno,node.colno)}},compileCallExtension:function(node,frame,async){var name=node.extName;var args=node.args;var contentArgs=node.contentArgs;var autoescape=typeof node.autoescape==="boolean"?node.autoescape:true;var transformedArgs=[];if(!async){this.emit(this.buffer+" += runtime.suppressValue(")}this.emit('env.getExtension("'+node.extName+'")["'+node.prop+'"](');this.emit("context");if(args||contentArgs){this.emit(",")}if(args){if(!(args instanceof nodes.NodeList)){this.fail("compileCallExtension: arguments must be a NodeList, "+"use `parser.parseSignature`")}lib.each(args.children,function(arg,i){this._compileExpression(arg,frame);if(i!==args.children.length-1||contentArgs.length){this.emit(",")}},this)}if(contentArgs.length){lib.each(contentArgs,function(arg,i){if(i>0){this.emit(",")}if(arg){var id=this.tmpid();this.emitLine("function(cb) {");this.emitLine("if(!cb) { cb = function(err) { if(err) { throw err; }}}");this.pushBufferId(id);this.withScopedSyntax(function(){this.compile(arg,frame);this.emitLine("cb(null, "+id+");")});this.popBufferId();this.emitLine("return "+id+";");this.emitLine("}")}else{this.emit("null")}},this)}if(async){var res=this.tmpid();this.emitLine(", "+this.makeCallback(res));this.emitLine(this.buffer+" += runtime.suppressValue("+res+", "+autoescape+" && env.opts.autoescape);");this.addScopeLevel()}else{this.emit(")");this.emit(", "+autoescape+" && env.opts.autoescape);\n")}},compileCallExtensionAsync:function(node,frame){this.compileCallExtension(node,frame,true)},compileNodeList:function(node,frame){this._compileChildren(node,frame)},compileLiteral:function(node,frame){if(typeof node.value==="string"){var val=node.value.replace(/\\/g,"\\\\");val=val.replace(/"/g,'\\"');val=val.replace(/\n/g,"\\n");val=val.replace(/\r/g,"\\r");val=val.replace(/\t/g,"\\t");this.emit('"'+val+'"')}else{this.emit(node.value.toString())}},compileSymbol:function(node,frame){var name=node.value;var v;if(v=frame.lookup(name)){this.emit(v)}else{this.emit("runtime.contextOrFrameLookup("+'context, frame, "'+name+'")')}},compileGroup:function(node,frame){this._compileAggregate(node,frame,"(",")")},compileArray:function(node,frame){this._compileAggregate(node,frame,"[","]")},compileDict:function(node,frame){this._compileAggregate(node,frame,"{","}")},compilePair:function(node,frame){var key=node.key;var val=node.value;if(key instanceof nodes.Symbol){key=new nodes.Literal(key.lineno,key.colno,key.value)}else if(!(key instanceof nodes.Literal&&typeof key.value==="string")){this.fail("compilePair: Dict keys must be strings or names",key.lineno,key.colno)}this.compile(key,frame);this.emit(": ");this._compileExpression(val,frame)},compileInlineIf:function(node,frame){this.emit("(");this.compile(node.cond,frame);this.emit("?");this.compile(node.body,frame);this.emit(":");if(node.else_!==null)this.compile(node.else_,frame);else this.emit('""');this.emit(")")},compileIn:function(node,frame){this.emit("(");this.compile(node.right,frame);this.emit(".indexOf(");this.compile(node.left,frame);this.emit(") !== -1)")},compileOr:binOpEmitter(" || "),compileAnd:binOpEmitter(" && "),compileAdd:binOpEmitter(" + "),compileSub:binOpEmitter(" - "),compileMul:binOpEmitter(" * "),compileDiv:binOpEmitter(" / "),compileMod:binOpEmitter(" % "),compileNot:function(node,frame){this.emit("!");this.compile(node.target,frame)},compileFloorDiv:function(node,frame){this.emit("Math.floor(");this.compile(node.left,frame);this.emit(" / ");this.compile(node.right,frame);this.emit(")")},compilePow:function(node,frame){this.emit("Math.pow(");this.compile(node.left,frame);this.emit(", ");this.compile(node.right,frame);this.emit(")")},compileNeg:function(node,frame){this.emit("-");this.compile(node.target,frame)},compilePos:function(node,frame){this.emit("+");this.compile(node.target,frame)},compileCompare:function(node,frame){this.compile(node.expr,frame);for(var i=0;i<node.ops.length;i++){var n=node.ops[i];this.emit(" "+compareOps[n.type]+" ");this.compile(n.expr,frame)}},compileLookupVal:function(node,frame){this.emit("runtime.memberLookup((");this._compileExpression(node.target,frame);this.emit("),");this._compileExpression(node.val,frame);this.emit(", env.opts.autoescape)")},_getNodeName:function(node){switch(node.typename){case"Symbol":return node.value;case"FunCall":return"the return value of ("+this._getNodeName(node.name)+")";case"LookupVal":return this._getNodeName(node.target)+'["'+this._getNodeName(node.val)+'"]';case"Literal":return node.value.toString().substr(0,10);default:return"--expression--"}},compileFunCall:function(node,frame){this.emit("(lineno = "+node.lineno+", colno = "+node.colno+", ");this.emit("runtime.callWrap(");this._compileExpression(node.name,frame);this.emit(', "'+this._getNodeName(node.name).replace(/"/g,'\\"')+'", ');this._compileAggregate(node.args,frame,"[","])");this.emit(")")},compileFilter:function(node,frame){var name=node.name;this.assertType(name,nodes.Symbol);this.emit('env.getFilter("'+name.value+'").call(context, ');this._compileAggregate(node.args,frame);this.emit(")")},compileFilterAsync:function(node,frame){var name=node.name;this.assertType(name,nodes.Symbol);var symbol=node.symbol.value;frame.set(symbol,symbol);this.emit('env.getFilter("'+name.value+'").call(context, ');this._compileAggregate(node.args,frame);this.emitLine(", "+this.makeCallback(symbol));this.addScopeLevel()},compileKeywordArgs:function(node,frame){var 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opts=this.opts=opts||{};this.opts.dev=!!opts.dev;this.opts.autoescape=!!opts.autoescape;this.opts.trimBlocks=!!opts.trimBlocks;this.opts.lstripBlocks=!!opts.lstripBlocks;if(!loaders){if(builtin_loaders.FileSystemLoader){this.loaders=[new builtin_loaders.FileSystemLoader("views")]}else{this.loaders=[new builtin_loaders.WebLoader("/views")]}}else{this.loaders=lib.isArray(loaders)?loaders:[loaders]}this.initCache();this.filters={};this.asyncFilters=[];this.extensions={};this.extensionsList=[];for(var name in builtin_filters){this.addFilter(name,builtin_filters[name])}},initCache:function(){lib.each(this.loaders,function(loader){loader.cache={};if(typeof loader.on==="function"){loader.on("update",function(template){loader.cache[template]=null})}})},addExtension:function(name,extension){extension._name=name;this.extensions[name]=extension;this.extensionsList.push(extension)},getExtension:function(name){return this.extensions[name]},addGlobal:function(name,value){globals[name]=value},addFilter:function(name,func,async){var wrapped=func;if(async){this.asyncFilters.push(name)}this.filters[name]=wrapped},getFilter:function(name){if(!this.filters[name]){throw new Error("filter not found: "+name)}return this.filters[name]},resolveTemplate:function(loader,parentName,filename){var isRelative=loader.isRelative&&parentName?loader.isRelative(filename):false;return isRelative&&loader.resolve?loader.resolve(parentName,filename):filename},getTemplate:function(name,eagerCompile,parentName,cb){var that=this;var tmpl=null;if(name&&name.raw){name=name.raw}if(lib.isFunction(parentName)){cb=parentName;parentName=null;eagerCompile=eagerCompile||false}if(lib.isFunction(eagerCompile)){cb=eagerCompile;eagerCompile=false}if(typeof name!=="string"){throw new Error("template names must be a string: "+name)}for(var i=0;i<this.loaders.length;i++){var _name=this.resolveTemplate(this.loaders[i],parentName,name);tmpl=this.loaders[i].cache[_name];if(tmpl)break}if(tmpl){if(eagerCompile){tmpl.compile()}if(cb){cb(null,tmpl)}else{return tmpl}}else{var syncResult;lib.asyncIter(this.loaders,function(loader,i,next,done){function handle(src){if(src){src.loader=loader;done(src)}else{next()}}name=that.resolveTemplate(loader,parentName,name);if(loader.async){loader.getSource(name,function(err,src){if(err){throw err}handle(src)})}else{handle(loader.getSource(name))}},function(info){if(!info){var err=new Error("template not found: "+name);if(cb){cb(err)}else{throw err}}else{var tmpl=new Template(info.src,this,info.path,eagerCompile);if(!info.noCache){info.loader.cache[name]=tmpl}if(cb){cb(null,tmpl)}else{syncResult=tmpl}}}.bind(this));return syncResult}},express:function(app){var env=this;function NunjucksView(name,opts){this.name=name;this.path=name;this.defaultEngine=opts.defaultEngine;this.ext=path.extname(name);if(!this.ext&&!this.defaultEngine)throw new Error("No default engine was specified and no extension was provided.");if(!this.ext)this.name+=this.ext=("."!==this.defaultEngine[0]?".":"")+this.defaultEngine}NunjucksView.prototype.render=function(opts,cb){env.render(this.name,opts,cb)};app.set("view",NunjucksView)},render:function(name,ctx,cb){if(lib.isFunction(ctx)){cb=ctx;ctx=null}var syncResult=null;this.getTemplate(name,function(err,tmpl){if(err&&cb){cb(err)}else if(err){throw err}else{tmpl.render(ctx,cb||function(err,res){if(err){throw err}syncResult=res})}});return syncResult},renderString:function(src,ctx,opts,cb){if(lib.isFunction(opts)){cb=opts;opts={}}opts=opts||{};var tmpl=new Template(src,this,opts.path);return tmpl.render(ctx,cb)}});var Context=Obj.extend({init:function(ctx,blocks){this.ctx=ctx;this.blocks={};this.exported=[];for(var name in blocks){this.addBlock(name,blocks[name])}},lookup:function(name){if(name in globals&&!(name in this.ctx)){return globals[name]}else{return this.ctx[name]}},setVariable:function(name,val){this.ctx[name]=val},getVariables:function(){return this.ctx},addBlock:function(name,block){this.blocks[name]=this.blocks[name]||[];this.blocks[name].push(block)},getBlock:function(name){if(!this.blocks[name]){throw new Error('unknown block "'+name+'"')}return this.blocks[name][0]},getSuper:function(env,name,block,frame,runtime,cb){var idx=lib.indexOf(this.blocks[name]||[],block);var blk=this.blocks[name][idx+1];var context=this;if(idx===-1||!blk){throw new Error('no super block available for "'+name+'"')}blk(env,context,frame,runtime,cb)},addExport:function(name){this.exported.push(name)},getExported:function(){var exported={};for(var i=0;i<this.exported.length;i++){var name=this.exported[i];exported[name]=this.ctx[name]}return exported}});var Template=Obj.extend({init:function(src,env,path,eagerCompile){this.env=env||new Environment;if(lib.isObject(src)){switch(src.type){case"code":this.tmplProps=src.obj;break;case"string":this.tmplStr=src.obj;break}}else if(lib.isString(src)){this.tmplStr=src}else{throw new Error("src must be a string or an object describing "+"the source")}this.path=path;if(eagerCompile){lib.withPrettyErrors(this.path,this.env.dev,this._compile.bind(this))}else{this.compiled=false}},render:function(ctx,frame,cb){if(typeof ctx==="function"){cb=ctx;ctx={}}else if(typeof frame==="function"){cb=frame;frame=null}return lib.withPrettyErrors(this.path,this.env.dev,function(){try{this.compile()}catch(e){if(cb)return cb(e);else throw e}var context=new Context(ctx||{},this.blocks);var syncResult=null;this.rootRenderFunc(this.env,context,frame||new Frame,runtime,cb||function(err,res){if(err){throw err}syncResult=res});return syncResult}.bind(this))},getExported:function(ctx,frame,cb){if(typeof ctx==="function"){cb=ctx;ctx={}}if(typeof frame==="function"){cb=frame;frame=null}try{this.compile()}catch(e){if(cb)return cb(e);else throw e}var context=new Context(ctx||{},this.blocks);this.rootRenderFunc(this.env,context,frame||new Frame,runtime,function(){cb(null,context.getExported())})},compile:function(){if(!this.compiled){this._compile()}},_compile:function(){var props;if(this.tmplProps){props=this.tmplProps}else{var source=compiler.compile(this.tmplStr,this.env.asyncFilters,this.env.extensionsList,this.path,this.env.opts);var func=new Function(source);props=func()}this.blocks=this._getBlocks(props);this.rootRenderFunc=props.root;this.compiled=true},_getBlocks:function(props){var blocks={};for(var k in props){if(k.slice(0,2)==="b_"){blocks[k.slice(2)]=props[k]}}return blocks}});modules["environment"]={Environment:Environment,Template:Template}})();var nunjucks;var lib=modules["lib"];var env=modules["environment"];var compiler=modules["compiler"];var parser=modules["parser"];var lexer=modules["lexer"];var runtime=modules["runtime"];var Loader=modules["loader"];var loaders=modules["loaders"];var precompile=modules["precompile"];nunjucks={};nunjucks.Environment=env.Environment;nunjucks.Template=env.Template;nunjucks.Loader=Loader;nunjucks.FileSystemLoader=loaders.FileSystemLoader;nunjucks.WebLoader=loaders.WebLoader;nunjucks.compiler=compiler;nunjucks.parser=parser;nunjucks.lexer=lexer;nunjucks.runtime=runtime;var e;nunjucks.configure=function(templatesPath,opts){opts=opts||{};if(lib.isObject(templatesPath)){opts=templatesPath;templatesPath=null}var noWatch="watch"in opts?!opts.watch:false;var loader=loaders.FileSystemLoader||loaders.WebLoader;e=new env.Environment(new loader(templatesPath,noWatch),opts);if(opts&&opts.express){e.express(opts.express)}return e};nunjucks.compile=function(src,env,path,eagerCompile){if(!e){nunjucks.configure()}return new nunjucks.Template(src,env,path,eagerCompile)};nunjucks.render=function(name,ctx,cb){if(!e){nunjucks.configure()}return e.render(name,ctx,cb)};nunjucks.renderString=function(src,ctx,cb){if(!e){nunjucks.configure()}return e.renderString(src,ctx,cb)};if(precompile){nunjucks.precompile=precompile.precompile;nunjucks.precompileString=precompile.precompileString}nunjucks.require=function(name){return modules[name]};if(typeof define==="function"&&define.amd){define(function(){return nunjucks})}else{window.nunjucks=nunjucks;if(typeof module!=="undefined")module.exports=nunjucks}})();
\ No newline at end of file
diff --git a/package.json b/package.json
index 7119c150..307affc7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "nunjucks",
     "description": "A powerful templating engine with inheritance, asynchronous control, and more (jinja2 inspired)",
-    "version": "1.2.0",
+    "version": "1.3.0",
     "author": "James Long <longster@gmail.com>",
     "dependencies": {
         "optimist": "*",