diff --git a/components/prism-core.js b/components/prism-core.js
index 29330e5533..0ff3bbf38c 100644
--- a/components/prism-core.js
+++ b/components/prism-core.js
@@ -138,14 +138,17 @@ var _ = _self.Prism = {
 				}
 			}
 
+			var old = root[inside];
+			root[inside] = ret;
+
 			// Update references in other language definitions
 			_.languages.DFS(_.languages, function(key, value) {
-				if (value === root[inside] && key != inside) {
+				if (value === old && key != inside) {
 					this[key] = ret;
 				}
 			});
 
-			return root[inside] = ret;
+			return ret;
 		},
 
 		// Traverse a language definition with Depth First Search
diff --git a/components/prism-core.min.js b/components/prism-core.min.js
index a42f5da40a..1256177db7 100644
--- a/components/prism-core.min.js
+++ b/components/prism-core.min.js
@@ -1 +1 @@
-var _self="undefined"!=typeof window?window:"undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?self:{},Prism=function(){var e=/\blang(?:uage)?-([\w-]+)\b/i,t=0,n=_self.Prism={manual:_self.Prism&&_self.Prism.manual,disableWorkerMessageHandler:_self.Prism&&_self.Prism.disableWorkerMessageHandler,util:{encode:function(e){return e instanceof r?new r(e.type,n.util.encode(e.content),e.alias):"Array"===n.util.type(e)?e.map(n.util.encode):e.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/\u00a0/g," ")},type:function(e){return Object.prototype.toString.call(e).match(/\[object (\w+)\]/)[1]},objId:function(e){return e.__id||Object.defineProperty(e,"__id",{value:++t}),e.__id},clone:function(e,t){var r=n.util.type(e);switch(t=t||{},r){case"Object":if(t[n.util.objId(e)])return t[n.util.objId(e)];var a={};t[n.util.objId(e)]=a;for(var l in e)e.hasOwnProperty(l)&&(a[l]=n.util.clone(e[l],t));return a;case"Array":if(t[n.util.objId(e)])return t[n.util.objId(e)];var a=[];return t[n.util.objId(e)]=a,e.forEach(function(e,r){a[r]=n.util.clone(e,t)}),a}return e}},languages:{extend:function(e,t){var r=n.util.clone(n.languages[e]);for(var a in t)r[a]=t[a];return r},insertBefore:function(e,t,r,a){a=a||n.languages;var l=a[e];if(2==arguments.length){r=arguments[1];for(var i in r)r.hasOwnProperty(i)&&(l[i]=r[i]);return l}var o={};for(var s in l)if(l.hasOwnProperty(s)){if(s==t)for(var i in r)r.hasOwnProperty(i)&&(o[i]=r[i]);o[s]=l[s]}return n.languages.DFS(n.languages,function(t,n){n===a[e]&&t!=e&&(this[t]=o)}),a[e]=o},DFS:function(e,t,r,a){a=a||{};for(var l in e)e.hasOwnProperty(l)&&(t.call(e,l,e[l],r||l),"Object"!==n.util.type(e[l])||a[n.util.objId(e[l])]?"Array"!==n.util.type(e[l])||a[n.util.objId(e[l])]||(a[n.util.objId(e[l])]=!0,n.languages.DFS(e[l],t,l,a)):(a[n.util.objId(e[l])]=!0,n.languages.DFS(e[l],t,null,a)))}},plugins:{},highlightAll:function(e,t){n.highlightAllUnder(document,e,t)},highlightAllUnder:function(e,t,r){var a={callback:r,selector:'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'};n.hooks.run("before-highlightall",a);for(var l,i=a.elements||e.querySelectorAll(a.selector),o=0;l=i[o++];)n.highlightElement(l,t===!0,a.callback)},highlightElement:function(t,r,a){for(var l,i,o=t;o&&!e.test(o.className);)o=o.parentNode;o&&(l=(o.className.match(e)||[,""])[1].toLowerCase(),i=n.languages[l]),t.className=t.className.replace(e,"").replace(/\s+/g," ")+" language-"+l,t.parentNode&&(o=t.parentNode,/pre/i.test(o.nodeName)&&(o.className=o.className.replace(e,"").replace(/\s+/g," ")+" language-"+l));var s=t.textContent,u={element:t,language:l,grammar:i,code:s};if(n.hooks.run("before-sanity-check",u),!u.code||!u.grammar)return u.code&&(n.hooks.run("before-highlight",u),u.element.textContent=u.code,n.hooks.run("after-highlight",u)),n.hooks.run("complete",u),void 0;if(n.hooks.run("before-highlight",u),r&&_self.Worker){var g=new Worker(n.filename);g.onmessage=function(e){u.highlightedCode=e.data,n.hooks.run("before-insert",u),u.element.innerHTML=u.highlightedCode,a&&a.call(u.element),n.hooks.run("after-highlight",u),n.hooks.run("complete",u)},g.postMessage(JSON.stringify({language:u.language,code:u.code,immediateClose:!0}))}else u.highlightedCode=n.highlight(u.code,u.grammar,u.language),n.hooks.run("before-insert",u),u.element.innerHTML=u.highlightedCode,a&&a.call(t),n.hooks.run("after-highlight",u),n.hooks.run("complete",u)},highlight:function(e,t,a){var l={code:e,grammar:t,language:a};return n.hooks.run("before-tokenize",l),l.tokens=n.tokenize(l.code,l.grammar),n.hooks.run("after-tokenize",l),r.stringify(n.util.encode(l.tokens),l.language)},matchGrammar:function(e,t,r,a,l,i,o){var s=n.Token;for(var u in r)if(r.hasOwnProperty(u)&&r[u]){if(u==o)return;var g=r[u];g="Array"===n.util.type(g)?g:[g];for(var c=0;c<g.length;++c){var h=g[c],f=h.inside,d=!!h.lookbehind,m=!!h.greedy,p=0,y=h.alias;if(m&&!h.pattern.global){var v=h.pattern.toString().match(/[imuy]*$/)[0];h.pattern=RegExp(h.pattern.source,v+"g")}h=h.pattern||h;for(var b=a,k=l;b<t.length;k+=t[b].length,++b){var w=t[b];if(t.length>e.length)return;if(!(w instanceof s)){if(m&&b!=t.length-1){h.lastIndex=k;var _=h.exec(e);if(!_)break;for(var j=_.index+(d?_[1].length:0),P=_.index+_[0].length,A=b,x=k,O=t.length;O>A&&(P>x||!t[A].type&&!t[A-1].greedy);++A)x+=t[A].length,j>=x&&(++b,k=x);if(t[b]instanceof s)continue;I=A-b,w=e.slice(k,x),_.index-=k}else{h.lastIndex=0;var _=h.exec(w),I=1}if(_){d&&(p=_[1]?_[1].length:0);var j=_.index+p,_=_[0].slice(p),P=j+_.length,N=w.slice(0,j),S=w.slice(P),C=[b,I];N&&(++b,k+=N.length,C.push(N));var E=new s(u,f?n.tokenize(_,f):_,y,_,m);if(C.push(E),S&&C.push(S),Array.prototype.splice.apply(t,C),1!=I&&n.matchGrammar(e,t,r,b,k,!0,u),i)break}else if(i)break}}}}},tokenize:function(e,t){var r=[e],a=t.rest;if(a){for(var l in a)t[l]=a[l];delete t.rest}return n.matchGrammar(e,r,t,0,0,!1),r},hooks:{all:{},add:function(e,t){var r=n.hooks.all;r[e]=r[e]||[],r[e].push(t)},run:function(e,t){var r=n.hooks.all[e];if(r&&r.length)for(var a,l=0;a=r[l++];)a(t)}}},r=n.Token=function(e,t,n,r,a){this.type=e,this.content=t,this.alias=n,this.length=0|(r||"").length,this.greedy=!!a};if(r.stringify=function(e,t,a){if("string"==typeof e)return e;if("Array"===n.util.type(e))return e.map(function(n){return r.stringify(n,t,e)}).join("");var l={type:e.type,content:r.stringify(e.content,t,a),tag:"span",classes:["token",e.type],attributes:{},language:t,parent:a};if(e.alias){var i="Array"===n.util.type(e.alias)?e.alias:[e.alias];Array.prototype.push.apply(l.classes,i)}n.hooks.run("wrap",l);var o=Object.keys(l.attributes).map(function(e){return e+'="'+(l.attributes[e]||"").replace(/"/g,"&quot;")+'"'}).join(" ");return"<"+l.tag+' class="'+l.classes.join(" ")+'"'+(o?" "+o:"")+">"+l.content+"</"+l.tag+">"},!_self.document)return _self.addEventListener?(n.disableWorkerMessageHandler||_self.addEventListener("message",function(e){var t=JSON.parse(e.data),r=t.language,a=t.code,l=t.immediateClose;_self.postMessage(n.highlight(a,n.languages[r],r)),l&&_self.close()},!1),_self.Prism):_self.Prism;var a=document.currentScript||[].slice.call(document.getElementsByTagName("script")).pop();return a&&(n.filename=a.src,n.manual||a.hasAttribute("data-manual")||("loading"!==document.readyState?window.requestAnimationFrame?window.requestAnimationFrame(n.highlightAll):window.setTimeout(n.highlightAll,16):document.addEventListener("DOMContentLoaded",n.highlightAll))),_self.Prism}();"undefined"!=typeof module&&module.exports&&(module.exports=Prism),"undefined"!=typeof global&&(global.Prism=Prism);
\ No newline at end of file
+var _self="undefined"!=typeof window?window:"undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?self:{},Prism=function(){var e=/\blang(?:uage)?-([\w-]+)\b/i,t=0,n=_self.Prism={manual:_self.Prism&&_self.Prism.manual,disableWorkerMessageHandler:_self.Prism&&_self.Prism.disableWorkerMessageHandler,util:{encode:function(e){return e instanceof r?new r(e.type,n.util.encode(e.content),e.alias):"Array"===n.util.type(e)?e.map(n.util.encode):e.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/\u00a0/g," ")},type:function(e){return Object.prototype.toString.call(e).match(/\[object (\w+)\]/)[1]},objId:function(e){return e.__id||Object.defineProperty(e,"__id",{value:++t}),e.__id},clone:function(e,t){var r=n.util.type(e);switch(t=t||{},r){case"Object":if(t[n.util.objId(e)])return t[n.util.objId(e)];var a={};t[n.util.objId(e)]=a;for(var l in e)e.hasOwnProperty(l)&&(a[l]=n.util.clone(e[l],t));return a;case"Array":if(t[n.util.objId(e)])return t[n.util.objId(e)];var a=[];return t[n.util.objId(e)]=a,e.forEach(function(e,r){a[r]=n.util.clone(e,t)}),a}return e}},languages:{extend:function(e,t){var r=n.util.clone(n.languages[e]);for(var a in t)r[a]=t[a];return r},insertBefore:function(e,t,r,a){a=a||n.languages;var l=a[e];if(2==arguments.length){r=arguments[1];for(var i in r)r.hasOwnProperty(i)&&(l[i]=r[i]);return l}var o={};for(var s in l)if(l.hasOwnProperty(s)){if(s==t)for(var i in r)r.hasOwnProperty(i)&&(o[i]=r[i]);o[s]=l[s]}var u=a[e];return a[e]=o,n.languages.DFS(n.languages,function(t,n){n===u&&t!=e&&(this[t]=o)}),o},DFS:function(e,t,r,a){a=a||{};for(var l in e)e.hasOwnProperty(l)&&(t.call(e,l,e[l],r||l),"Object"!==n.util.type(e[l])||a[n.util.objId(e[l])]?"Array"!==n.util.type(e[l])||a[n.util.objId(e[l])]||(a[n.util.objId(e[l])]=!0,n.languages.DFS(e[l],t,l,a)):(a[n.util.objId(e[l])]=!0,n.languages.DFS(e[l],t,null,a)))}},plugins:{},highlightAll:function(e,t){n.highlightAllUnder(document,e,t)},highlightAllUnder:function(e,t,r){var a={callback:r,selector:'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'};n.hooks.run("before-highlightall",a);for(var l,i=a.elements||e.querySelectorAll(a.selector),o=0;l=i[o++];)n.highlightElement(l,t===!0,a.callback)},highlightElement:function(t,r,a){for(var l,i,o=t;o&&!e.test(o.className);)o=o.parentNode;o&&(l=(o.className.match(e)||[,""])[1].toLowerCase(),i=n.languages[l]),t.className=t.className.replace(e,"").replace(/\s+/g," ")+" language-"+l,t.parentNode&&(o=t.parentNode,/pre/i.test(o.nodeName)&&(o.className=o.className.replace(e,"").replace(/\s+/g," ")+" language-"+l));var s=t.textContent,u={element:t,language:l,grammar:i,code:s};if(n.hooks.run("before-sanity-check",u),!u.code||!u.grammar)return u.code&&(n.hooks.run("before-highlight",u),u.element.textContent=u.code,n.hooks.run("after-highlight",u)),n.hooks.run("complete",u),void 0;if(n.hooks.run("before-highlight",u),r&&_self.Worker){var g=new Worker(n.filename);g.onmessage=function(e){u.highlightedCode=e.data,n.hooks.run("before-insert",u),u.element.innerHTML=u.highlightedCode,a&&a.call(u.element),n.hooks.run("after-highlight",u),n.hooks.run("complete",u)},g.postMessage(JSON.stringify({language:u.language,code:u.code,immediateClose:!0}))}else u.highlightedCode=n.highlight(u.code,u.grammar,u.language),n.hooks.run("before-insert",u),u.element.innerHTML=u.highlightedCode,a&&a.call(t),n.hooks.run("after-highlight",u),n.hooks.run("complete",u)},highlight:function(e,t,a){var l={code:e,grammar:t,language:a};return n.hooks.run("before-tokenize",l),l.tokens=n.tokenize(l.code,l.grammar),n.hooks.run("after-tokenize",l),r.stringify(n.util.encode(l.tokens),l.language)},matchGrammar:function(e,t,r,a,l,i,o){var s=n.Token;for(var u in r)if(r.hasOwnProperty(u)&&r[u]){if(u==o)return;var g=r[u];g="Array"===n.util.type(g)?g:[g];for(var c=0;c<g.length;++c){var h=g[c],f=h.inside,d=!!h.lookbehind,m=!!h.greedy,p=0,y=h.alias;if(m&&!h.pattern.global){var v=h.pattern.toString().match(/[imuy]*$/)[0];h.pattern=RegExp(h.pattern.source,v+"g")}h=h.pattern||h;for(var b=a,k=l;b<t.length;k+=t[b].length,++b){var w=t[b];if(t.length>e.length)return;if(!(w instanceof s)){if(m&&b!=t.length-1){h.lastIndex=k;var _=h.exec(e);if(!_)break;for(var j=_.index+(d?_[1].length:0),P=_.index+_[0].length,A=b,x=k,O=t.length;O>A&&(P>x||!t[A].type&&!t[A-1].greedy);++A)x+=t[A].length,j>=x&&(++b,k=x);if(t[b]instanceof s)continue;I=A-b,w=e.slice(k,x),_.index-=k}else{h.lastIndex=0;var _=h.exec(w),I=1}if(_){d&&(p=_[1]?_[1].length:0);var j=_.index+p,_=_[0].slice(p),P=j+_.length,N=w.slice(0,j),S=w.slice(P),C=[b,I];N&&(++b,k+=N.length,C.push(N));var E=new s(u,f?n.tokenize(_,f):_,y,_,m);if(C.push(E),S&&C.push(S),Array.prototype.splice.apply(t,C),1!=I&&n.matchGrammar(e,t,r,b,k,!0,u),i)break}else if(i)break}}}}},tokenize:function(e,t){var r=[e],a=t.rest;if(a){for(var l in a)t[l]=a[l];delete t.rest}return n.matchGrammar(e,r,t,0,0,!1),r},hooks:{all:{},add:function(e,t){var r=n.hooks.all;r[e]=r[e]||[],r[e].push(t)},run:function(e,t){var r=n.hooks.all[e];if(r&&r.length)for(var a,l=0;a=r[l++];)a(t)}}},r=n.Token=function(e,t,n,r,a){this.type=e,this.content=t,this.alias=n,this.length=0|(r||"").length,this.greedy=!!a};if(r.stringify=function(e,t,a){if("string"==typeof e)return e;if("Array"===n.util.type(e))return e.map(function(n){return r.stringify(n,t,e)}).join("");var l={type:e.type,content:r.stringify(e.content,t,a),tag:"span",classes:["token",e.type],attributes:{},language:t,parent:a};if(e.alias){var i="Array"===n.util.type(e.alias)?e.alias:[e.alias];Array.prototype.push.apply(l.classes,i)}n.hooks.run("wrap",l);var o=Object.keys(l.attributes).map(function(e){return e+'="'+(l.attributes[e]||"").replace(/"/g,"&quot;")+'"'}).join(" ");return"<"+l.tag+' class="'+l.classes.join(" ")+'"'+(o?" "+o:"")+">"+l.content+"</"+l.tag+">"},!_self.document)return _self.addEventListener?(n.disableWorkerMessageHandler||_self.addEventListener("message",function(e){var t=JSON.parse(e.data),r=t.language,a=t.code,l=t.immediateClose;_self.postMessage(n.highlight(a,n.languages[r],r)),l&&_self.close()},!1),_self.Prism):_self.Prism;var a=document.currentScript||[].slice.call(document.getElementsByTagName("script")).pop();return a&&(n.filename=a.src,n.manual||a.hasAttribute("data-manual")||("loading"!==document.readyState?window.requestAnimationFrame?window.requestAnimationFrame(n.highlightAll):window.setTimeout(n.highlightAll,16):document.addEventListener("DOMContentLoaded",n.highlightAll))),_self.Prism}();"undefined"!=typeof module&&module.exports&&(module.exports=Prism),"undefined"!=typeof global&&(global.Prism=Prism);
\ No newline at end of file
diff --git a/components/prism-javascript.js b/components/prism-javascript.js
index 7800a7d424..0cad213357 100644
--- a/components/prism-javascript.js
+++ b/components/prism-javascript.js
@@ -32,14 +32,13 @@ Prism.languages.insertBefore('javascript', 'string', {
 						pattern: /^\${|}$/,
 						alias: 'punctuation'
 					},
-					rest: null // See below
+					rest: Prism.languages.javascript
 				}
 			},
 			'string': /[\s\S]+/
 		}
 	}
 });
-Prism.languages.javascript['template-string'].inside['interpolation'].inside.rest = Prism.languages.javascript;
 
 if (Prism.languages.markup) {
 	Prism.languages.insertBefore('markup', 'tag', {
diff --git a/components/prism-javascript.min.js b/components/prism-javascript.min.js
index 50a4d54f80..8551a48dd7 100644
--- a/components/prism-javascript.min.js
+++ b/components/prism-javascript.min.js
@@ -1 +1 @@
-Prism.languages.javascript=Prism.languages.extend("clike",{keyword:/\b(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,number:/\b(?:0[xX][\dA-Fa-f]+|0[bB][01]+|0[oO][0-7]+|NaN|Infinity)\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,"function":/[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*\()/i,operator:/-[-=]?|\+[+=]?|!=?=?|<<?=?|>>?>?=?|=(?:==?|>)?|&[&=]?|\|[|=]?|\*\*?=?|\/=?|~|\^=?|%=?|\?|\.{3}/}),Prism.languages.insertBefore("javascript","keyword",{regex:{pattern:/((?:^|[^$\w\xA0-\uFFFF."'\])\s])\s*)\/(\[[^\]\r\n]+]|\\.|[^\/\\\[\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})\]]))/,lookbehind:!0,greedy:!0},"function-variable":{pattern:/[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*=\s*(?:function\b|(?:\([^()]*\)|[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*)\s*=>))/i,alias:"function"},constant:/\b[A-Z][A-Z\d_]*\b/}),Prism.languages.insertBefore("javascript","string",{"template-string":{pattern:/`(?:\\[\s\S]|\${[^}]+}|[^\\`])*`/,greedy:!0,inside:{interpolation:{pattern:/\${[^}]+}/,inside:{"interpolation-punctuation":{pattern:/^\${|}$/,alias:"punctuation"},rest:null}},string:/[\s\S]+/}}}),Prism.languages.javascript["template-string"].inside.interpolation.inside.rest=Prism.languages.javascript,Prism.languages.markup&&Prism.languages.insertBefore("markup","tag",{script:{pattern:/(<script[\s\S]*?>)[\s\S]*?(?=<\/script>)/i,lookbehind:!0,inside:Prism.languages.javascript,alias:"language-javascript",greedy:!0}}),Prism.languages.js=Prism.languages.javascript;
\ No newline at end of file
+Prism.languages.javascript=Prism.languages.extend("clike",{keyword:/\b(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,number:/\b(?:0[xX][\dA-Fa-f]+|0[bB][01]+|0[oO][0-7]+|NaN|Infinity)\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,"function":/[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*\()/i,operator:/-[-=]?|\+[+=]?|!=?=?|<<?=?|>>?>?=?|=(?:==?|>)?|&[&=]?|\|[|=]?|\*\*?=?|\/=?|~|\^=?|%=?|\?|\.{3}/}),Prism.languages.insertBefore("javascript","keyword",{regex:{pattern:/((?:^|[^$\w\xA0-\uFFFF."'\])\s])\s*)\/(\[[^\]\r\n]+]|\\.|[^\/\\\[\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})\]]))/,lookbehind:!0,greedy:!0},"function-variable":{pattern:/[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*=\s*(?:function\b|(?:\([^()]*\)|[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*)\s*=>))/i,alias:"function"},constant:/\b[A-Z][A-Z\d_]*\b/}),Prism.languages.insertBefore("javascript","string",{"template-string":{pattern:/`(?:\\[\s\S]|\${[^}]+}|[^\\`])*`/,greedy:!0,inside:{interpolation:{pattern:/\${[^}]+}/,inside:{"interpolation-punctuation":{pattern:/^\${|}$/,alias:"punctuation"},rest:Prism.languages.javascript}},string:/[\s\S]+/}}}),Prism.languages.markup&&Prism.languages.insertBefore("markup","tag",{script:{pattern:/(<script[\s\S]*?>)[\s\S]*?(?=<\/script>)/i,lookbehind:!0,inside:Prism.languages.javascript,alias:"language-javascript",greedy:!0}}),Prism.languages.js=Prism.languages.javascript;
\ No newline at end of file
diff --git a/components/prism-php.js b/components/prism-php.js
index 8302ecb535..36899f16af 100644
--- a/components/prism-php.js
+++ b/components/prism-php.js
@@ -51,6 +51,14 @@
 		}
 	});
 
+	var string_interpolation = {
+		pattern: /{\$(?:{(?:{[^{}]+}|[^{}]+)}|[^{}])+}|(^|[^\\{])\$+(?:\w+(?:\[.+?]|->\w+)*)/,
+		lookbehind: true,
+		inside: {
+			rest: Prism.languages.php
+		}
+	};
+
 	Prism.languages.insertBefore('php', 'string', {
 		'nowdoc-string': {
 			pattern: /<<<'([^']+)'(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\1;/,
@@ -78,7 +86,7 @@
 						'punctuation': /^<<<"?|[";]$/
 					}
 				},
-				'interpolation': null // See below
+				'interpolation': string_interpolation // See below
 			}
 		},
 		'single-quoted-string': {
@@ -91,23 +99,13 @@
 			greedy: true,
 			alias: 'string',
 			inside: {
-				'interpolation': null // See below
+				'interpolation': string_interpolation // See below
 			}
 		}
 	});
 	// The different types of PHP strings "replace" the C-like standard string
 	delete Prism.languages.php['string'];
 
-	var string_interpolation = {
-		pattern: /{\$(?:{(?:{[^{}]+}|[^{}]+)}|[^{}])+}|(^|[^\\{])\$+(?:\w+(?:\[.+?]|->\w+)*)/,
-		lookbehind: true,
-		inside: {
-			rest: Prism.languages.php
-		}
-	};
-	Prism.languages.php['heredoc-string'].inside['interpolation'] = string_interpolation;
-	Prism.languages.php['double-quoted-string'].inside['interpolation'] = string_interpolation;
-
 	Prism.hooks.add('before-tokenize', function(env) {
 		if (!/(?:<\?php|<\?)/ig.test(env.code)) {
 			return;
diff --git a/components/prism-php.min.js b/components/prism-php.min.js
index a4c2efbeef..03260d4808 100644
--- a/components/prism-php.min.js
+++ b/components/prism-php.min.js
@@ -1 +1 @@
-!function(e){e.languages.php=e.languages.extend("clike",{keyword:/\b(?:and|or|xor|array|as|break|case|cfunction|class|const|continue|declare|default|die|do|else|elseif|enddeclare|endfor|endforeach|endif|endswitch|endwhile|extends|for|foreach|function|include|include_once|global|if|new|return|static|switch|use|require|require_once|var|while|abstract|interface|public|implements|private|protected|parent|throw|null|echo|print|trait|namespace|final|yield|goto|instanceof|finally|try|catch)\b/i,constant:/\b[A-Z0-9_]{2,}\b/,comment:{pattern:/(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/,lookbehind:!0}}),e.languages.insertBefore("php","string",{"shell-comment":{pattern:/(^|[^\\])#.*/,lookbehind:!0,alias:"comment"}}),e.languages.insertBefore("php","keyword",{delimiter:{pattern:/\?>|<\?(?:php|=)?/i,alias:"important"},variable:/\$+(?:\w+\b|(?={))/i,"package":{pattern:/(\\|namespace\s+|use\s+)[\w\\]+/,lookbehind:!0,inside:{punctuation:/\\/}}}),e.languages.insertBefore("php","operator",{property:{pattern:/(->)[\w]+/,lookbehind:!0}}),e.languages.insertBefore("php","string",{"nowdoc-string":{pattern:/<<<'([^']+)'(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\1;/,greedy:!0,alias:"string",inside:{delimiter:{pattern:/^<<<'[^']+'|[a-z_]\w*;$/i,alias:"symbol",inside:{punctuation:/^<<<'?|[';]$/}}}},"heredoc-string":{pattern:/<<<(?:"([^"]+)"(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\1;|([a-z_]\w*)(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\2;)/i,greedy:!0,alias:"string",inside:{delimiter:{pattern:/^<<<(?:"[^"]+"|[a-z_]\w*)|[a-z_]\w*;$/i,alias:"symbol",inside:{punctuation:/^<<<"?|[";]$/}},interpolation:null}},"single-quoted-string":{pattern:/'(?:\\[\s\S]|[^\\'])*'/,greedy:!0,alias:"string"},"double-quoted-string":{pattern:/"(?:\\[\s\S]|[^\\"])*"/,greedy:!0,alias:"string",inside:{interpolation:null}}}),delete e.languages.php.string;var n={pattern:/{\$(?:{(?:{[^{}]+}|[^{}]+)}|[^{}])+}|(^|[^\\{])\$+(?:\w+(?:\[.+?]|->\w+)*)/,lookbehind:!0,inside:{rest:e.languages.php}};e.languages.php["heredoc-string"].inside.interpolation=n,e.languages.php["double-quoted-string"].inside.interpolation=n,e.hooks.add("before-tokenize",function(n){if(/(?:<\?php|<\?)/gi.test(n.code)){var i=/(?:<\?php|<\?)[\s\S]*?(?:\?>|$)/gi;e.languages["markup-templating"].buildPlaceholders(n,"php",i)}}),e.hooks.add("after-tokenize",function(n){e.languages["markup-templating"].tokenizePlaceholders(n,"php")})}(Prism);
\ No newline at end of file
+!function(e){e.languages.php=e.languages.extend("clike",{keyword:/\b(?:and|or|xor|array|as|break|case|cfunction|class|const|continue|declare|default|die|do|else|elseif|enddeclare|endfor|endforeach|endif|endswitch|endwhile|extends|for|foreach|function|include|include_once|global|if|new|return|static|switch|use|require|require_once|var|while|abstract|interface|public|implements|private|protected|parent|throw|null|echo|print|trait|namespace|final|yield|goto|instanceof|finally|try|catch)\b/i,constant:/\b[A-Z0-9_]{2,}\b/,comment:{pattern:/(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/,lookbehind:!0}}),e.languages.insertBefore("php","string",{"shell-comment":{pattern:/(^|[^\\])#.*/,lookbehind:!0,alias:"comment"}}),e.languages.insertBefore("php","keyword",{delimiter:{pattern:/\?>|<\?(?:php|=)?/i,alias:"important"},variable:/\$+(?:\w+\b|(?={))/i,"package":{pattern:/(\\|namespace\s+|use\s+)[\w\\]+/,lookbehind:!0,inside:{punctuation:/\\/}}}),e.languages.insertBefore("php","operator",{property:{pattern:/(->)[\w]+/,lookbehind:!0}});var n={pattern:/{\$(?:{(?:{[^{}]+}|[^{}]+)}|[^{}])+}|(^|[^\\{])\$+(?:\w+(?:\[.+?]|->\w+)*)/,lookbehind:!0,inside:{rest:e.languages.php}};e.languages.insertBefore("php","string",{"nowdoc-string":{pattern:/<<<'([^']+)'(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\1;/,greedy:!0,alias:"string",inside:{delimiter:{pattern:/^<<<'[^']+'|[a-z_]\w*;$/i,alias:"symbol",inside:{punctuation:/^<<<'?|[';]$/}}}},"heredoc-string":{pattern:/<<<(?:"([^"]+)"(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\1;|([a-z_]\w*)(?:\r\n?|\n)(?:.*(?:\r\n?|\n))*?\2;)/i,greedy:!0,alias:"string",inside:{delimiter:{pattern:/^<<<(?:"[^"]+"|[a-z_]\w*)|[a-z_]\w*;$/i,alias:"symbol",inside:{punctuation:/^<<<"?|[";]$/}},interpolation:n}},"single-quoted-string":{pattern:/'(?:\\[\s\S]|[^\\'])*'/,greedy:!0,alias:"string"},"double-quoted-string":{pattern:/"(?:\\[\s\S]|[^\\"])*"/,greedy:!0,alias:"string",inside:{interpolation:n}}}),delete e.languages.php.string,e.hooks.add("before-tokenize",function(n){if(/(?:<\?php|<\?)/gi.test(n.code)){var t=/(?:<\?php|<\?)[\s\S]*?(?:\?>|$)/gi;e.languages["markup-templating"].buildPlaceholders(n,"php",t)}}),e.hooks.add("after-tokenize",function(n){e.languages["markup-templating"].tokenizePlaceholders(n,"php")})}(Prism);
\ No newline at end of file
diff --git a/prism.js b/prism.js
index 2baadce878..0ce19ab429 100644
--- a/prism.js
+++ b/prism.js
@@ -143,14 +143,17 @@ var _ = _self.Prism = {
 				}
 			}
 
+			var old = root[inside];
+			root[inside] = ret;
+
 			// Update references in other language definitions
 			_.languages.DFS(_.languages, function(key, value) {
-				if (value === root[inside] && key != inside) {
+				if (value === old && key != inside) {
 					this[key] = ret;
 				}
 			});
 
-			return root[inside] = ret;
+			return ret;
 		},
 
 		// Traverse a language definition with Depth First Search
@@ -755,14 +758,13 @@ Prism.languages.insertBefore('javascript', 'string', {
 						pattern: /^\${|}$/,
 						alias: 'punctuation'
 					},
-					rest: null // See below
+					rest: Prism.languages.javascript
 				}
 			},
 			'string': /[\s\S]+/
 		}
 	}
 });
-Prism.languages.javascript['template-string'].inside['interpolation'].inside.rest = Prism.languages.javascript;
 
 if (Prism.languages.markup) {
 	Prism.languages.insertBefore('markup', 'tag', {