diff --git a/components/prism-core.js b/components/prism-core.js
index 8b8343b485..29a7952d7b 100644
--- a/components/prism-core.js
+++ b/components/prism-core.js
@@ -823,6 +823,25 @@ Token.stringify = function stringify(o, language) {
 	return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + attributes + '>' + env.content + '</' + env.tag + '>';
 };
 
+/**
+ * @param {RegExp} pattern
+ * @param {number} pos
+ * @param {string} text
+ * @param {boolean} lookbehind
+ * @returns {RegExpExecArray | null}
+ */
+function matchPattern(pattern, pos, text, lookbehind) {
+	pattern.lastIndex = pos;
+	var match = pattern.exec(text);
+	if (match && lookbehind && match[1]) {
+		// change the match to remove the text matched by the Prism lookbehind group
+		var lookbehindLength = match[1].length;
+		match.index += lookbehindLength;
+		match[0] = match[0].slice(lookbehindLength);
+	}
+	return match;
+}
+
 /**
  * @param {string} text
  * @param {LinkedList<string | Token>} tokenList
@@ -855,7 +874,6 @@ function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
 				inside = patternObj.inside,
 				lookbehind = !!patternObj.lookbehind,
 				greedy = !!patternObj.greedy,
-				lookbehindLength = 0,
 				alias = patternObj.alias;
 
 			if (greedy && !patternObj.pattern.global) {
@@ -889,15 +907,15 @@ function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
 				}
 
 				var removeCount = 1; // this is the to parameter of removeBetween
+				var match;
 
 				if (greedy) {
-					pattern.lastIndex = pos;
-					var match = pattern.exec(text);
+					match = matchPattern(pattern, pos, text, lookbehind);
 					if (!match) {
 						break;
 					}
 
-					var from = match.index + (lookbehind && match[1] ? match[1].length : 0);
+					var from = match.index;
 					var to = match.index + match[0].length;
 					var p = pos;
 
@@ -931,24 +949,16 @@ function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
 					str = text.slice(pos, p);
 					match.index -= pos;
 				} else {
-					pattern.lastIndex = 0;
-
-					var match = pattern.exec(str);
-				}
-
-				if (!match) {
-					continue;
-				}
-
-				if (lookbehind) {
-					lookbehindLength = match[1] ? match[1].length : 0;
+					match = matchPattern(pattern, 0, str, lookbehind);
+					if (!match) {
+						continue;
+					}
 				}
 
-				var from = match.index + lookbehindLength,
-					matchStr = match[0].slice(lookbehindLength),
-					to = from + matchStr.length,
+				var from = match.index,
+					matchStr = match[0],
 					before = str.slice(0, from),
-					after = str.slice(to);
+					after = str.slice(from + matchStr.length);
 
 				var reach = pos + str.length;
 				if (rematch && reach > rematch.reach) {
diff --git a/components/prism-core.min.js b/components/prism-core.min.js
index 1589f00289..89173b8a76 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(u){var c=/\blang(?:uage)?-([\w-]+)\b/i,n=0,M={manual:u.Prism&&u.Prism.manual,disableWorkerMessageHandler:u.Prism&&u.Prism.disableWorkerMessageHandler,util:{encode:function e(n){return n instanceof W?new W(n.type,e(n.content),n.alias):Array.isArray(n)?n.map(e):n.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/\u00a0/g," ")},type:function(e){return Object.prototype.toString.call(e).slice(8,-1)},objId:function(e){return e.__id||Object.defineProperty(e,"__id",{value:++n}),e.__id},clone:function t(e,r){var a,n;switch(r=r||{},M.util.type(e)){case"Object":if(n=M.util.objId(e),r[n])return r[n];for(var i in a={},r[n]=a,e)e.hasOwnProperty(i)&&(a[i]=t(e[i],r));return a;case"Array":return n=M.util.objId(e),r[n]?r[n]:(a=[],r[n]=a,e.forEach(function(e,n){a[n]=t(e,r)}),a);default:return e}},getLanguage:function(e){for(;e&&!c.test(e.className);)e=e.parentElement;return e?(e.className.match(c)||[,"none"])[1].toLowerCase():"none"},currentScript:function(){if("undefined"==typeof document)return null;if("currentScript"in document)return document.currentScript;try{throw new Error}catch(e){var n=(/at [^(\r\n]*\((.*):.+:.+\)$/i.exec(e.stack)||[])[1];if(n){var t=document.getElementsByTagName("script");for(var r in t)if(t[r].src==n)return t[r]}return null}},isActive:function(e,n,t){for(var r="no-"+n;e;){var a=e.classList;if(a.contains(n))return!0;if(a.contains(r))return!1;e=e.parentElement}return!!t}},languages:{extend:function(e,n){var t=M.util.clone(M.languages[e]);for(var r in n)t[r]=n[r];return t},insertBefore:function(t,e,n,r){var a=(r=r||M.languages)[t],i={};for(var l in a)if(a.hasOwnProperty(l)){if(l==e)for(var o in n)n.hasOwnProperty(o)&&(i[o]=n[o]);n.hasOwnProperty(l)||(i[l]=a[l])}var s=r[t];return 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i=e.parentElement;i&&"pre"===i.nodeName.toLowerCase()&&(i.className=i.className.replace(c,"").replace(/\s+/g," ")+" language-"+r);var l={element:e,language:r,grammar:a,code:e.textContent};function o(e){l.highlightedCode=e,M.hooks.run("before-insert",l),l.element.innerHTML=l.highlightedCode,M.hooks.run("after-highlight",l),M.hooks.run("complete",l),t&&t.call(l.element)}if(M.hooks.run("before-sanity-check",l),!l.code)return M.hooks.run("complete",l),void(t&&t.call(l.element));if(M.hooks.run("before-highlight",l),l.grammar)if(n&&u.Worker){var s=new Worker(M.filename);s.onmessage=function(e){o(e.data)},s.postMessage(JSON.stringify({language:l.language,code:l.code,immediateClose:!0}))}else o(M.highlight(l.code,l.grammar,l.language));else o(M.util.encode(l.code))},highlight:function(e,n,t){var r={code:e,grammar:n,language:t};return 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\ No newline at end of file
+var _self="undefined"!=typeof window?window:"undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?self:{},Prism=function(u){var c=/\blang(?:uage)?-([\w-]+)\b/i,n=0,_={manual:u.Prism&&u.Prism.manual,disableWorkerMessageHandler:u.Prism&&u.Prism.disableWorkerMessageHandler,util:{encode:function e(n){return n instanceof M?new M(n.type,e(n.content),n.alias):Array.isArray(n)?n.map(e):n.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/\u00a0/g," ")},type:function(e){return Object.prototype.toString.call(e).slice(8,-1)},objId:function(e){return e.__id||Object.defineProperty(e,"__id",{value:++n}),e.__id},clone:function t(e,r){var a,n;switch(r=r||{},_.util.type(e)){case"Object":if(n=_.util.objId(e),r[n])return r[n];for(var i in a={},r[n]=a,e)e.hasOwnProperty(i)&&(a[i]=t(e[i],r));return a;case"Array":return n=_.util.objId(e),r[n]?r[n]:(a=[],r[n]=a,e.forEach(function(e,n){a[n]=t(e,r)}),a);default:return 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e=_.util.currentScript();function t(){_.manual||_.highlightAll()}if(e&&(_.filename=e.src,e.hasAttribute("data-manual")&&(_.manual=!0)),!_.manual){var r=document.readyState;"loading"===r||"interactive"===r&&e&&e.defer?document.addEventListener("DOMContentLoaded",t):window.requestAnimationFrame?window.requestAnimationFrame(t):window.setTimeout(t,16)}return _}(_self);"undefined"!=typeof module&&module.exports&&(module.exports=Prism),"undefined"!=typeof global&&(global.Prism=Prism);
\ No newline at end of file
diff --git a/docs/global.html b/docs/global.html
index 380162886a..4838a92ced 100644
--- a/docs/global.html
+++ b/docs/global.html
@@ -143,7 +143,7 @@ <h4 class="name" id="Grammar">Grammar</h4>
     
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1161">line 1161</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1171">line 1171</a>
     </li></ul></dd>
     
 
@@ -274,7 +274,7 @@ <h4 class="name" id="GrammarToken">GrammarToken</h4>
     
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1140">line 1140</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1150">line 1150</a>
     </li></ul></dd>
     
 
@@ -559,7 +559,7 @@ <h4 class="name" id="HighlightCallback"><span class="type-signature"></span>High
     
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1169">line 1169</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1179">line 1179</a>
     </li></ul></dd>
     
 
@@ -713,7 +713,7 @@ <h4 class="name" id="HookCallback"><span class="type-signature"></span>HookCallb
     
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1179">line 1179</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line1189">line 1189</a>
     </li></ul></dd>
     
 
diff --git a/docs/prism-core.js.html b/docs/prism-core.js.html
index f8a5edcd1e..ed5112a7fd 100644
--- a/docs/prism-core.js.html
+++ b/docs/prism-core.js.html
@@ -876,6 +876,25 @@ <h1 class="page-title">prism-core.js</h1>
 	return '&lt;' + env.tag + ' class="' + env.classes.join(' ') + '"' + attributes + '>' + env.content + '&lt;/' + env.tag + '>';
 };
 
+/**
+ * @param {RegExp} pattern
+ * @param {number} pos
+ * @param {string} text
+ * @param {boolean} lookbehind
+ * @returns {RegExpExecArray | null}
+ */
+function matchPattern(pattern, pos, text, lookbehind) {
+	pattern.lastIndex = pos;
+	var match = pattern.exec(text);
+	if (match &amp;&amp; lookbehind &amp;&amp; match[1]) {
+		// change the match to remove the text matched by the Prism lookbehind group
+		var lookbehindLength = match[1].length;
+		match.index += lookbehindLength;
+		match[0] = match[0].slice(lookbehindLength);
+	}
+	return match;
+}
+
 /**
  * @param {string} text
  * @param {LinkedList&lt;string | Token>} tokenList
@@ -908,7 +927,6 @@ <h1 class="page-title">prism-core.js</h1>
 				inside = patternObj.inside,
 				lookbehind = !!patternObj.lookbehind,
 				greedy = !!patternObj.greedy,
-				lookbehindLength = 0,
 				alias = patternObj.alias;
 
 			if (greedy &amp;&amp; !patternObj.pattern.global) {
@@ -942,15 +960,15 @@ <h1 class="page-title">prism-core.js</h1>
 				}
 
 				var removeCount = 1; // this is the to parameter of removeBetween
+				var match;
 
 				if (greedy) {
-					pattern.lastIndex = pos;
-					var match = pattern.exec(text);
+					match = matchPattern(pattern, pos, text, lookbehind);
 					if (!match) {
 						break;
 					}
 
-					var from = match.index + (lookbehind &amp;&amp; match[1] ? match[1].length : 0);
+					var from = match.index;
 					var to = match.index + match[0].length;
 					var p = pos;
 
@@ -984,24 +1002,16 @@ <h1 class="page-title">prism-core.js</h1>
 					str = text.slice(pos, p);
 					match.index -= pos;
 				} else {
-					pattern.lastIndex = 0;
-
-					var match = pattern.exec(str);
-				}
-
-				if (!match) {
-					continue;
-				}
-
-				if (lookbehind) {
-					lookbehindLength = match[1] ? match[1].length : 0;
+					match = matchPattern(pattern, 0, str, lookbehind);
+					if (!match) {
+						continue;
+					}
 				}
 
-				var from = match.index + lookbehindLength,
-					matchStr = match[0].slice(lookbehindLength),
-					to = from + matchStr.length,
+				var from = match.index,
+					matchStr = match[0],
 					before = str.slice(0, from),
-					after = str.slice(to);
+					after = str.slice(from + matchStr.length);
 
 				var reach = pos + str.length;
 				if (rematch &amp;&amp; reach > rematch.reach) {
diff --git a/prism.js b/prism.js
index 02af74b4c8..cab8797b12 100644
--- a/prism.js
+++ b/prism.js
@@ -828,6 +828,25 @@ Token.stringify = function stringify(o, language) {
 	return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + attributes + '>' + env.content + '</' + env.tag + '>';
 };
 
+/**
+ * @param {RegExp} pattern
+ * @param {number} pos
+ * @param {string} text
+ * @param {boolean} lookbehind
+ * @returns {RegExpExecArray | null}
+ */
+function matchPattern(pattern, pos, text, lookbehind) {
+	pattern.lastIndex = pos;
+	var match = pattern.exec(text);
+	if (match && lookbehind && match[1]) {
+		// change the match to remove the text matched by the Prism lookbehind group
+		var lookbehindLength = match[1].length;
+		match.index += lookbehindLength;
+		match[0] = match[0].slice(lookbehindLength);
+	}
+	return match;
+}
+
 /**
  * @param {string} text
  * @param {LinkedList<string | Token>} tokenList
@@ -860,7 +879,6 @@ function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
 				inside = patternObj.inside,
 				lookbehind = !!patternObj.lookbehind,
 				greedy = !!patternObj.greedy,
-				lookbehindLength = 0,
 				alias = patternObj.alias;
 
 			if (greedy && !patternObj.pattern.global) {
@@ -894,15 +912,15 @@ function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
 				}
 
 				var removeCount = 1; // this is the to parameter of removeBetween
+				var match;
 
 				if (greedy) {
-					pattern.lastIndex = pos;
-					var match = pattern.exec(text);
+					match = matchPattern(pattern, pos, text, lookbehind);
 					if (!match) {
 						break;
 					}
 
-					var from = match.index + (lookbehind && match[1] ? match[1].length : 0);
+					var from = match.index;
 					var to = match.index + match[0].length;
 					var p = pos;
 
@@ -936,24 +954,16 @@ function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
 					str = text.slice(pos, p);
 					match.index -= pos;
 				} else {
-					pattern.lastIndex = 0;
-
-					var match = pattern.exec(str);
-				}
-
-				if (!match) {
-					continue;
-				}
-
-				if (lookbehind) {
-					lookbehindLength = match[1] ? match[1].length : 0;
+					match = matchPattern(pattern, 0, str, lookbehind);
+					if (!match) {
+						continue;
+					}
 				}
 
-				var from = match.index + lookbehindLength,
-					matchStr = match[0].slice(lookbehindLength),
-					to = from + matchStr.length,
+				var from = match.index,
+					matchStr = match[0],
 					before = str.slice(0, from),
-					after = str.slice(to);
+					after = str.slice(from + matchStr.length);
 
 				var reach = pos + str.length;
 				if (rematch && reach > rematch.reach) {