diff --git a/lib/amd/build/mustache.min.js b/lib/amd/build/mustache.min.js
index e28c52846bb..c795aedcc4e 100644
--- a/lib/amd/build/mustache.min.js
+++ b/lib/amd/build/mustache.min.js
@@ -1 +1 @@
-!function(a,b){"object"==typeof exports&&exports&&"string"!=typeof exports.nodeName?b(exports):"function"==typeof define&&define.amd?define(["exports"],b):(a.Mustache={},b(a.Mustache))}(this,function(a){function b(a){return"function"==typeof a}function c(a){return p(a)?"array":typeof a}function d(a){return a.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g,"\\$&")}function e(a,b){return null!=a&&"object"==typeof a&&b in a}function f(a,b){return q.call(a,b)}function g(a){return!f(r,a)}function h(a){return String(a).replace(/[&<>"'`=\/]/g,function(a){return s[a]})}function i(b,c){function e(){if(r&&!s)for(;q.length;)delete o[q.pop()];else q=[];r=!1,s=!1}function f(a){if("string"==typeof a&&(a=a.split(u,2)),!p(a)||2!==a.length)throw new Error("Invalid tags: "+a);h=new RegExp(d(a[0])+"\\s*"),i=new RegExp("\\s*"+d(a[1])),m=new RegExp("\\s*"+d("}"+a[1]))}if(!b)return[];var h,i,m,n=[],o=[],q=[],r=!1,s=!1;f(c||a.tags);for(var y,z,A,B,C,D,E=new l(b);!E.eos();){if(y=E.pos,A=E.scanUntil(h))for(var F=0,G=A.length;F<G;++F)B=A.charAt(F),g(B)?q.push(o.length):s=!0,o.push(["text",B,y,y+1]),y+=1,"\n"===B&&e();if(!E.scan(h))break;if(r=!0,z=E.scan(x)||"name",E.scan(t),"="===z?(A=E.scanUntil(v),E.scan(v),E.scanUntil(i)):"{"===z?(A=E.scanUntil(m),E.scan(w),E.scanUntil(i),z="&"):A=E.scanUntil(i),!E.scan(i))throw new Error("Unclosed tag at "+E.pos);if(C=[z,A,y,E.pos],o.push(C),"#"===z||"^"===z||"$"===z||"<"===z)n.push(C);else if("/"===z){if(D=n.pop(),!D)throw new Error('Unopened section "'+A+'" at '+y);if(D[1]!==A)throw new Error('Unclosed section "'+D[1]+'" at '+y)}else"name"===z||"{"===z||"&"===z?s=!0:"="===z&&f(A)}if(D=n.pop())throw new Error('Unclosed section "'+D[1]+'" at '+E.pos);return k(j(o))}function j(a){for(var b,c,d=[],e=0,f=a.length;e<f;++e)b=a[e],b&&("text"===b[0]&&c&&"text"===c[0]?(c[1]+=b[1],c[3]=b[3]):(d.push(b),c=b));return d}function k(a){for(var b,c,d=[],e=d,f=[],g=0,h=a.length;g<h;++g)switch(b=a[g],b[0]){case"$":case"<":case"#":case"^":e.push(b),f.push(b),e=b[4]=[];break;case"/":c=f.pop(),c[5]=b[2],e=f.length>0?f[f.length-1][4]:d;break;default:e.push(b)}return d}function l(a){this.string=a,this.tail=a,this.pos=0}function m(a,b){this.view=a,this.blocks={},this.cache={".":this.view},this.parent=b}function n(){this.cache={}}var o=Object.prototype.toString,p=Array.isArray||function(a){return"[object Array]"===o.call(a)},q=RegExp.prototype.test,r=/\S/,s={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","/":"&#x2F;","`":"&#x60;","=":"&#x3D;"},t=/\s*/,u=/\s+/,v=/\s*=/,w=/\s*\}/,x=/#|\^|\/|>|\{|&|=|!|\$|</;l.prototype.eos=function(){return""===this.tail},l.prototype.scan=function(a){var b=this.tail.match(a);if(!b||0!==b.index)return"";var c=b[0];return this.tail=this.tail.substring(c.length),this.pos+=c.length,c},l.prototype.scanUntil=function(a){var b,c=this.tail.search(a);switch(c){case-1:b=this.tail,this.tail="";break;case 0:b="";break;default:b=this.tail.substring(0,c),this.tail=this.tail.substring(c)}return this.pos+=b.length,b},m.prototype.push=function(a){return new m(a,this)},m.prototype.setBlockVar=function(a,b){var c=this.blocks;return c[a]=b,b},m.prototype.clearBlockVars=function(){this.blocks={}},m.prototype.getBlockVar=function(a){var b,c=this.blocks;return c.hasOwnProperty(a)?b=c[a]:this.parent&&(b=this.parent.getBlockVar(a)),b},m.prototype.lookup=function(a){var c,d=this.cache;if(d.hasOwnProperty(a))c=d[a];else{for(var f,g,h=this,i=!1;h;){if(a.indexOf(".")>0)for(c=h.view,f=a.split("."),g=0;null!=c&&g<f.length;)g===f.length-1&&(i=e(c,f[g])),c=c[f[g++]];else c=h.view[a],i=e(h.view,a);if(i)break;h=h.parent}d[a]=c}return b(c)&&(c=c.call(this.view)),c},n.prototype.clearCache=function(){this.cache={}},n.prototype.parse=function(b,c){var d=this.cache,e=d[b];return null==e&&(e=d[b+":"+(c||a.tags).join(":")]=i(b,c)),e},n.prototype.render=function(a,b,c){var d=this.parse(a),e=b instanceof m?b:new m(b);return this.renderTokens(d,e,c,a)},n.prototype.renderTokens=function(a,b,c,d){for(var e,f,g,h="",i=0,j=a.length;i<j;++i)g=void 0,e=a[i],f=e[0],"#"===f?g=this.renderSection(e,b,c,d):"^"===f?g=this.renderInverted(e,b,c,d):">"===f?g=this.renderPartial(e,b,c,d):"<"===f?g=this.renderBlock(e,b,c,d):"$"===f?g=this.renderBlockVariable(e,b,c,d):"&"===f?g=this.unescapedValue(e,b):"name"===f?g=this.escapedValue(e,b):"text"===f&&(g=this.rawValue(e)),void 0!==g&&(h+=g);return h},n.prototype.renderSection=function(a,c,d,e){function f(a){return g.render(a,c,d)}var g=this,h="",i=c.lookup(a[1]);if(i){if(p(i))for(var j=0,k=i.length;j<k;++j)h+=this.renderTokens(a[4],c.push(i[j]),d,e);else if("object"==typeof i||"string"==typeof i||"number"==typeof i)h+=this.renderTokens(a[4],c.push(i),d,e);else if(b(i)){if("string"!=typeof e)throw new Error("Cannot use higher-order sections without the original template");i=i.call(c.view,e.slice(a[3],a[5]),f),null!=i&&(h+=i)}else h+=this.renderTokens(a[4],c,d,e);return h}},n.prototype.renderInverted=function(a,b,c,d){var e=b.lookup(a[1]);if(!e||p(e)&&0===e.length)return this.renderTokens(a[4],b,c,d)},n.prototype.renderPartial=function(a,c,d){if(d){var e=b(d)?d(a[1]):d[a[1]];return null!=e?this.renderTokens(this.parse(e),c,d,e):void 0}},n.prototype.renderBlock=function(a,c,d,e){if(d){var f=b(d)?d(a[1]):d[a[1]];null!=f&&c.clearBlockVars(),this.renderTokens(a[4],c,d,e);var g=this.renderTokens(this.parse(f),c,d,f);return c.clearBlockVars(),g}},n.prototype.renderBlockVariable=function(a,b,c,d){var e=a[1],f=b.getBlockVar(e);return f?this.renderTokens(this.parse(f),b,c,f):(b.setBlockVar(e,d.slice(a[3],a[5])),this.renderTokens(a[4],b,c,d))},n.prototype.unescapedValue=function(a,b){var c=b.lookup(a[1]);if(null!=c)return c},n.prototype.escapedValue=function(b,c){var d=c.lookup(b[1]);if(null!=d)return a.escape(d)},n.prototype.rawValue=function(a){return a[1]},a.name="mustache.js",a.version="2.3.0",a.tags=["{{","}}"];var y=new n;return a.clearCache=function(){return y.clearCache()},a.parse=function(a,b){return y.parse(a,b)},a.render=function(a,b,d){if("string"!=typeof a)throw new TypeError('Invalid template! Template should be a "string" but "'+c(a)+'" was given as the first argument for mustache#render(template, view, partials)');return y.render(a,b,d)},a.to_html=function(c,d,e,f){var g=a.render(c,d,e);return b(f)?void f(g):g},a.escape=h,a.Scanner=l,a.Context=m,a.Writer=n,a});
\ No newline at end of file
+!function(a,b){"object"==typeof exports&&exports&&"string"!=typeof exports.nodeName?b(exports):"function"==typeof define&&define.amd?define(["exports"],b):(a.Mustache={},b(a.Mustache))}(this,function(a){function b(a){return"function"==typeof a}function c(a){return q(a)?"array":typeof a}function d(a){return a.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g,"\\$&")}function e(a,b){return null!=a&&"object"==typeof a&&b in a}function f(a,b){return null!=a&&"object"!=typeof a&&a.hasOwnProperty&&a.hasOwnProperty(b)}function g(a,b){return r.call(a,b)}function h(a){return!g(s,a)}function i(a){return String(a).replace(/[&<>"'`=\/]/g,function(a){return t[a]})}function j(b,c){function e(){if(r&&!s)for(;p.length;)delete o[p.pop()];else p=[];r=!1,s=!1}function f(a){if("string"==typeof a&&(a=a.split(v,2)),!q(a)||2!==a.length)throw new Error("Invalid tags: "+a);g=new RegExp(d(a[0])+"\\s*"),i=new RegExp("\\s*"+d(a[1])),j=new RegExp("\\s*"+d("}"+a[1]))}if(!b)return[];var g,i,j,n=[],o=[],p=[],r=!1,s=!1;f(c||a.tags);for(var t,z,A,B,C,D,E=new m(b);!E.eos();){if(t=E.pos,A=E.scanUntil(g))for(var F=0,G=A.length;F<G;++F)B=A.charAt(F),h(B)?p.push(o.length):s=!0,o.push(["text",B,t,t+1]),t+=1,"\n"===B&&e();if(!E.scan(g))break;if(r=!0,z=E.scan(y)||"name",E.scan(u),"="===z?(A=E.scanUntil(w),E.scan(w),E.scanUntil(i)):"{"===z?(A=E.scanUntil(j),E.scan(x),E.scanUntil(i),z="&"):A=E.scanUntil(i),!E.scan(i))throw new Error("Unclosed tag at "+E.pos);if(C=[z,A,t,E.pos],o.push(C),"#"===z||"^"===z||"$"===z||"<"===z)n.push(C);else if("/"===z){if(D=n.pop(),!D)throw new Error('Unopened section "'+A+'" at '+t);if(D[1]!==A)throw new Error('Unclosed section "'+D[1]+'" at '+t)}else"name"===z||"{"===z||"&"===z?s=!0:"="===z&&f(A)}if(D=n.pop())throw new Error('Unclosed section "'+D[1]+'" at '+E.pos);return l(k(o))}function k(a){for(var b,c,d=[],e=0,f=a.length;e<f;++e)b=a[e],b&&("text"===b[0]&&c&&"text"===c[0]?(c[1]+=b[1],c[3]=b[3]):(d.push(b),c=b));return d}function l(a){for(var b,c,d=[],e=d,f=[],g=0,h=a.length;g<h;++g)switch(b=a[g],b[0]){case"$":case"<":case"#":case"^":e.push(b),f.push(b),e=b[4]=[];break;case"/":c=f.pop(),c[5]=b[2],e=f.length>0?f[f.length-1][4]:d;break;default:e.push(b)}return d}function m(a){this.string=a,this.tail=a,this.pos=0}function n(a,b){this.view=a,this.blocks={},this.cache={".":this.view},this.parent=b}function o(){this.cache={}}var p=Object.prototype.toString,q=Array.isArray||function(a){return"[object Array]"===p.call(a)},r=RegExp.prototype.test,s=/\S/,t={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","/":"&#x2F;","`":"&#x60;","=":"&#x3D;"},u=/\s*/,v=/\s+/,w=/\s*=/,x=/\s*\}/,y=/#|\^|\/|>|\{|&|=|!|\$|</;m.prototype.eos=function(){return""===this.tail},m.prototype.scan=function(a){var b=this.tail.match(a);if(!b||0!==b.index)return"";var c=b[0];return this.tail=this.tail.substring(c.length),this.pos+=c.length,c},m.prototype.scanUntil=function(a){var b,c=this.tail.search(a);switch(c){case-1:b=this.tail,this.tail="";break;case 0:b="";break;default:b=this.tail.substring(0,c),this.tail=this.tail.substring(c)}return this.pos+=b.length,b},n.prototype.push=function(a){return new n(a,this)},n.prototype.setBlockVar=function(a,b){var c=this.blocks;return c[a]=b,b},n.prototype.clearBlockVars=function(){this.blocks={}},n.prototype.getBlockVar=function(a){var b,c=this.blocks;return c.hasOwnProperty(a)?b=c[a]:this.parent&&(b=this.parent.getBlockVar(a)),b},n.prototype.lookup=function(a){var c,d=this.cache;if(d.hasOwnProperty(a))c=d[a];else{for(var g,h,i,j=this,k=!1;j;){if(a.indexOf(".")>0)for(g=j.view,h=a.split("."),i=0;null!=g&&i<h.length;)i===h.length-1&&(k=e(g,h[i])||f(g,h[i])),g=g[h[i++]];else g=j.view[a],k=e(j.view,a);if(k){c=g;break}j=j.parent}d[a]=c}return b(c)&&(c=c.call(this.view)),c},o.prototype.clearCache=function(){this.cache={}},o.prototype.parse=function(b,c){var d=this.cache,e=b+":"+(c||a.tags).join(":"),f=d[e];return null==f&&(f=d[e]=j(b,c)),f},o.prototype.render=function(a,b,c,d){var e=this.parse(a,d),f=b instanceof n?b:new n(b);return this.renderTokens(e,f,c,a,d)},o.prototype.renderTokens=function(a,b,c,d,e){for(var f,g,h,i="",j=0,k=a.length;j<k;++j)h=void 0,f=a[j],g=f[0],"#"===g?h=this.renderSection(f,b,c,d):"^"===g?h=this.renderInverted(f,b,c,d):">"===g?h=this.renderPartial(f,b,c,e):"<"===g?h=this.renderBlock(f,b,c,d):"$"===g?h=this.renderBlockVariable(f,b,c,d):"&"===g?h=this.unescapedValue(f,b):"name"===g?h=this.escapedValue(f,b):"text"===g&&(h=this.rawValue(f)),void 0!==h&&(i+=h);return i},o.prototype.renderSection=function(a,c,d,e){function f(a){return g.render(a,c,d)}var g=this,h="",i=c.lookup(a[1]);if(i){if(q(i))for(var j=0,k=i.length;j<k;++j)h+=this.renderTokens(a[4],c.push(i[j]),d,e);else if("object"==typeof i||"string"==typeof i||"number"==typeof i)h+=this.renderTokens(a[4],c.push(i),d,e);else if(b(i)){if("string"!=typeof e)throw new Error("Cannot use higher-order sections without the original template");i=i.call(c.view,e.slice(a[3],a[5]),f),null!=i&&(h+=i)}else h+=this.renderTokens(a[4],c,d,e);return h}},o.prototype.renderInverted=function(a,b,c,d){var e=b.lookup(a[1]);if(!e||q(e)&&0===e.length)return this.renderTokens(a[4],b,c,d)},o.prototype.renderPartial=function(a,c,d,e){if(d){var f=b(d)?d(a[1]):d[a[1]];return null!=f?this.renderTokens(this.parse(f,e),c,d,f):void 0}},o.prototype.renderBlock=function(a,c,d,e){if(d){var f=b(d)?d(a[1]):d[a[1]];null!=f&&c.clearBlockVars(),this.renderTokens(a[4],c,d,e);var g=this.renderTokens(this.parse(f),c,d,f);return c.clearBlockVars(),g}},o.prototype.renderBlockVariable=function(a,b,c,d){var e=a[1],f=b.getBlockVar(e);return f?this.renderTokens(this.parse(f),b,c,f):(b.setBlockVar(e,d.slice(a[3],a[5])),this.renderTokens(a[4],b,c,d))},o.prototype.unescapedValue=function(a,b){var c=b.lookup(a[1]);if(null!=c)return c},o.prototype.escapedValue=function(b,c){var d=c.lookup(b[1]);if(null!=d)return a.escape(d)},o.prototype.rawValue=function(a){return a[1]},a.name="mustache.js",a.version="3.0.1",a.tags=["{{","}}"];var z=new o;return a.clearCache=function(){return z.clearCache()},a.parse=function(a,b){return z.parse(a,b)},a.render=function(a,b,d,e){if("string"!=typeof a)throw new TypeError('Invalid template! Template should be a "string" but "'+c(a)+'" was given as the first argument for mustache#render(template, view, partials)');return z.render(a,b,d,e)},a.to_html=function(c,d,e,f){var g=a.render(c,d,e);return b(f)?void f(g):g},a.escape=i,a.Scanner=m,a.Context=n,a.Writer=o,a});
\ No newline at end of file
diff --git a/lib/amd/src/mustache.js b/lib/amd/src/mustache.js
index 29135a1fa44..573ddca6a38 100644
--- a/lib/amd/src/mustache.js
+++ b/lib/amd/src/mustache.js
@@ -25,7 +25,7 @@
 //
 
 // Description of import into Moodle:
-// Checkout from https://github.com/moodle/custom-mustache.js
+// Checkout from https://github.com/moodle/custom-mustache.js Branch: LAMBDA_ARGS
 // Rebase onto latest release tag from https://github.com/janl/mustache.js
 // Copy mustache.js into lib/amd/src/ in Moodle folder.
 // Add the license as a comment to the file and these instructions.
@@ -80,6 +80,19 @@
     return obj != null && typeof obj === 'object' && (propName in obj);
   }
 
+  /**
+   * Safe way of detecting whether or not the given thing is a primitive and
+   * whether it has the given property
+   */
+  function primitiveHasOwnProperty (primitive, propName) {
+    return (
+      primitive != null
+      && typeof primitive !== 'object'
+      && primitive.hasOwnProperty
+      && primitive.hasOwnProperty(propName)
+    );
+  }
+
   // Workaround for https://issues.apache.org/jira/browse/COUCHDB-577
   // See https://github.com/janl/mustache.js/issues/189
   var regExpTest = RegExp.prototype.test;
@@ -451,11 +464,11 @@
     if (cache.hasOwnProperty(name)) {
       value = cache[name];
     } else {
-      var context = this, names, index, lookupHit = false;
+      var context = this, intermediateValue, names, index, lookupHit = false;
 
       while (context) {
         if (name.indexOf('.') > 0) {
-          value = context.view;
+          intermediateValue = context.view;
           names = name.split('.');
           index = 0;
 
@@ -469,20 +482,51 @@
            *
            * This is specially necessary for when the value has been set to
            * `undefined` and we want to avoid looking up parent contexts.
+           *
+           * In the case where dot notation is used, we consider the lookup
+           * to be successful even if the last "object" in the path is
+           * not actually an object but a primitive (e.g., a string, or an
+           * integer), because it is sometimes useful to access a property
+           * of an autoboxed primitive, such as the length of a string.
            **/
-          while (value != null && index < names.length) {
+          while (intermediateValue != null && index < names.length) {
             if (index === names.length - 1)
-              lookupHit = hasProperty(value, names[index]);
+              lookupHit = (
+                hasProperty(intermediateValue, names[index])
+                || primitiveHasOwnProperty(intermediateValue, names[index])
+              );
 
-            value = value[names[index++]];
+            intermediateValue = intermediateValue[names[index++]];
           }
         } else {
-          value = context.view[name];
+          intermediateValue = context.view[name];
+
+          /**
+           * Only checking against `hasProperty`, which always returns `false` if
+           * `context.view` is not an object. Deliberately omitting the check
+           * against `primitiveHasOwnProperty` if dot notation is not used.
+           *
+           * Consider this example:
+           * ```
+           * Mustache.render("The length of a football field is {{#length}}{{length}}{{/length}}.", {length: "100 yards"})
+           * ```
+           *
+           * If we were to check also against `primitiveHasOwnProperty`, as we do
+           * in the dot notation case, then render call would return:
+           *
+           * "The length of a football field is 9."
+           *
+           * rather than the expected:
+           *
+           * "The length of a football field is 100 yards."
+           **/
           lookupHit = hasProperty(context.view, name);
         }
 
-        if (lookupHit)
+        if (lookupHit) {
+          value = intermediateValue;
           break;
+        }
 
         context = context.parent;
       }
@@ -513,15 +557,17 @@
   };
 
   /**
-   * Parses and caches the given `template` and returns the array of tokens
+   * Parses and caches the given `template` according to the given `tags` or
+   * `mustache.tags` if `tags` is omitted,  and returns the array of tokens
    * that is generated from the parse.
    */
   Writer.prototype.parse = function parse (template, tags) {
     var cache = this.cache;
-    var tokens = cache[template];
+    var cacheKey = template + ':' + (tags || mustache.tags).join(':');
+    var tokens = cache[cacheKey];
 
     if (tokens == null)
-      tokens = cache[template + ':' + (tags || mustache.tags).join(':')] = parseTemplate(template, tags);
+      tokens = cache[cacheKey] = parseTemplate(template, tags);
 
     return tokens;
   };
@@ -534,11 +580,15 @@
    * names and templates of partials that are used in the template. It may
    * also be a function that is used to load partial templates on the fly
    * that takes a single argument: the name of the partial.
+   *
+   * If the optional `tags` argument is given here it must be an array with two
+   * string values: the opening and closing tags used in the template (e.g.
+   * [ "<%", "%>" ]). The default is to mustache.tags.
    */
-  Writer.prototype.render = function render (template, view, partials) {
-    var tokens = this.parse(template);
+  Writer.prototype.render = function render (template, view, partials, tags) {
+    var tokens = this.parse(template, tags);
     var context = (view instanceof Context) ? view : new Context(view);
-    return this.renderTokens(tokens, context, partials, template);
+    return this.renderTokens(tokens, context, partials, template, tags);
   };
 
   /**
@@ -550,7 +600,7 @@
    * If the template doesn't use higher-order sections, this argument may
    * be omitted.
    */
-  Writer.prototype.renderTokens = function renderTokens (tokens, context, partials, originalTemplate) {
+  Writer.prototype.renderTokens = function renderTokens (tokens, context, partials, originalTemplate, tags) {
     var buffer = '';
 
     var token, symbol, value;
@@ -561,7 +611,7 @@
 
       if (symbol === '#') value = this.renderSection(token, context, partials, originalTemplate);
       else if (symbol === '^') value = this.renderInverted(token, context, partials, originalTemplate);
-      else if (symbol === '>') value = this.renderPartial(token, context, partials, originalTemplate);
+      else if (symbol === '>') value = this.renderPartial(token, context, partials, tags);
       else if (symbol === '<') value = this.renderBlock(token, context, partials, originalTemplate);
       else if (symbol === '$') value = this.renderBlockVariable(token, context, partials, originalTemplate);
       else if (symbol === '&') value = this.unescapedValue(token, context);
@@ -618,12 +668,12 @@
       return this.renderTokens(token[4], context, partials, originalTemplate);
   };
 
-  Writer.prototype.renderPartial = function renderPartial (token, context, partials) {
+  Writer.prototype.renderPartial = function renderPartial (token, context, partials, tags) {
     if (!partials) return;
 
     var value = isFunction(partials) ? partials(token[1]) : partials[token[1]];
     if (value != null)
-      return this.renderTokens(this.parse(value), context, partials, value);
+      return this.renderTokens(this.parse(value, tags), context, partials, value);
   };
 
   Writer.prototype.renderBlock = function renderBlock (token, context, partials, originalTemplate) {
@@ -671,7 +721,7 @@
   };
 
   mustache.name = 'mustache.js';
-  mustache.version = '2.3.0';
+  mustache.version = '3.0.1';
   mustache.tags = [ '{{', '}}' ];
 
   // All high-level mustache.* functions use this writer.
@@ -695,16 +745,18 @@
 
   /**
    * Renders the `template` with the given `view` and `partials` using the
-   * default writer.
+   * default writer. If the optional `tags` argument is given here it must be an
+   * array with two string values: the opening and closing tags used in the
+   * template (e.g. [ "<%", "%>" ]). The default is to mustache.tags.
    */
-  mustache.render = function render (template, view, partials) {
+  mustache.render = function render (template, view, partials, tags) {
     if (typeof template !== 'string') {
       throw new TypeError('Invalid template! Template should be a "string" ' +
                           'but "' + typeStr(template) + '" was given as the first ' +
                           'argument for mustache#render(template, view, partials)');
     }
 
-    return defaultWriter.render(template, view, partials);
+    return defaultWriter.render(template, view, partials, tags);
   };
 
   // This is here for backwards compatibility with 0.4.x.,
diff --git a/lib/thirdpartylibs.xml b/lib/thirdpartylibs.xml
index b511bd1a6ee..55b718bca4c 100644
--- a/lib/thirdpartylibs.xml
+++ b/lib/thirdpartylibs.xml
@@ -198,7 +198,7 @@
     <location>amd/src/mustache.js</location>
     <name>Mustache.js</name>
     <license>MIT</license>
-    <version>2.3.0</version>
+    <version>3.0.1</version>
   </library>
   <library>
     <location>graphlib.php</location>