From 2b355c98720b7c4f697200d666ddfdcfc3350dbe Mon Sep 17 00:00:00 2001
From: Michael Schmidt <mitchi5000.ms@googlemail.com>
Date: Fri, 29 Jan 2021 14:57:36 +0100
Subject: [PATCH] Markdown: Workaround for incorrect highlighting due to double
 `wrap` hook (#2719)

The hook that highlights code blocks in markdown code was unable to handle code blocks that were highlighted already. The hook can now handle any existing markup in markdown code blocks.
---
 components/prism-markdown.js     | 6 ++++--
 components/prism-markdown.min.js | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/components/prism-markdown.js b/components/prism-markdown.js
index d0f35812bb..5c2ca6f91c 100644
--- a/components/prism-markdown.js
+++ b/components/prism-markdown.js
@@ -347,8 +347,10 @@
 				});
 			}
 		} else {
-			// reverse Prism.util.encode
-			var code = env.content.replace(/&lt;/g, '<').replace(/&amp;/g, '&');
+			// get the textContent of the given env HTML
+			var tempContainer = document.createElement('div');
+			tempContainer.innerHTML = env.content;
+			var code = tempContainer.textContent;
 
 			env.content = Prism.highlight(code, grammar, codeLang);
 		}
diff --git a/components/prism-markdown.min.js b/components/prism-markdown.min.js
index 8e761db472..3d23f8811f 100644
--- a/components/prism-markdown.min.js
+++ b/components/prism-markdown.min.js
@@ -1 +1 @@
-!function(d){function n(n){return n=n.replace(/<inner>/g,function(){return"(?:\\\\.|[^\\\\\n\r]|(?:\n|\r\n?)(?!\n|\r\n?))"}),RegExp("((?:^|[^\\\\])(?:\\\\{2})*)(?:"+n+")")}var e="(?:\\\\.|``(?:[^`\r\n]|`(?!`))+``|`[^`\r\n]+`|[^\\\\|\r\n`])+",t="\\|?__(?:\\|__)+\\|?(?:(?:\n|\r\n?)|(?![^]))".replace(/__/g,function(){return e}),a="\\|?[ \t]*:?-{3,}:?[ \t]*(?:\\|[ \t]*:?-{3,}:?[ \t]*)+\\|?(?:\n|\r\n?)";d.languages.markdown=d.languages.extend("markup",{}),d.languages.insertBefore("markdown","prolog",{"front-matter-block":{pattern:/(^(?:\s*[\r\n])?)---(?!.)[\s\S]*?[\r\n]---(?!.)/,lookbehind:!0,greedy:!0,inside:{punctuation:/^---|---$/,"font-matter":{pattern:/\S+(?:\s+\S+)*/,alias:["yaml","language-yaml"],inside:d.languages.yaml}}},blockquote:{pattern:/^>(?:[\t ]*>)*/m,alias:"punctuation"},table:{pattern:RegExp("^"+t+a+"(?:"+t+")*","m"),inside:{"table-data-rows":{pattern:RegExp("^("+t+a+")(?:"+t+")*$"),lookbehind:!0,inside:{"table-data":{pattern:RegExp(e),inside:d.languages.markdown},punctuation:/\|/}},"table-line":{pattern:RegExp("^("+t+")"+a+"$"),lookbehind:!0,inside:{punctuation:/\||:?-{3,}:?/}},"table-header-row":{pattern:RegExp("^"+t+"$"),inside:{"table-header":{pattern:RegExp(e),alias:"important",inside:d.languages.markdown},punctuation:/\|/}}}},code:[{pattern:/((?:^|\n)[ \t]*\n|(?:^|\r\n?)[ \t]*\r\n?)(?: {4}|\t).+(?:(?:\n|\r\n?)(?: {4}|\t).+)*/,lookbehind:!0,alias:"keyword"},{pattern:/``.+?``|`[^`\r\n]+`/,alias:"keyword"},{pattern:/^```[\s\S]*?^```$/m,greedy:!0,inside:{"code-block":{pattern:/^(```.*(?:\n|\r\n?))[\s\S]+?(?=(?:\n|\r\n?)^```$)/m,lookbehind:!0},"code-language":{pattern:/^(```).+/,lookbehind:!0},punctuation:/```/}}],title:[{pattern:/\S.*(?:\n|\r\n?)(?:==+|--+)(?=[ \t]*$)/m,alias:"important",inside:{punctuation:/==+$|--+$/}},{pattern:/(^\s*)#.+/m,lookbehind:!0,alias:"important",inside:{punctuation:/^#+|#+$/}}],hr:{pattern:/(^\s*)([*-])(?:[\t ]*\2){2,}(?=\s*$)/m,lookbehind:!0,alias:"punctuation"},list:{pattern:/(^\s*)(?:[*+-]|\d+\.)(?=[\t ].)/m,lookbehind:!0,alias:"punctuation"},"url-reference":{pattern:/!?\[[^\]]+\]:[\t ]+(?:\S+|<(?:\\.|[^>\\])+>)(?:[\t ]+(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\)))?/,inside:{variable:{pattern:/^(!?\[)[^\]]+/,lookbehind:!0},string:/(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\))$/,punctuation:/^[\[\]!:]|[<>]/},alias:"url"},bold:{pattern:n("\\b__(?:(?!_)<inner>|_(?:(?!_)<inner>)+_)+__\\b|\\*\\*(?:(?!\\*)<inner>|\\*(?:(?!\\*)<inner>)+\\*)+\\*\\*"),lookbehind:!0,greedy:!0,inside:{content:{pattern:/(^..)[\s\S]+(?=..$)/,lookbehind:!0,inside:{}},punctuation:/\*\*|__/}},italic:{pattern:n("\\b_(?:(?!_)<inner>|__(?:(?!_)<inner>)+__)+_\\b|\\*(?:(?!\\*)<inner>|\\*\\*(?:(?!\\*)<inner>)+\\*\\*)+\\*"),lookbehind:!0,greedy:!0,inside:{content:{pattern:/(^.)[\s\S]+(?=.$)/,lookbehind:!0,inside:{}},punctuation:/[*_]/}},strike:{pattern:n("(~~?)(?:(?!~)<inner>)+?\\2"),lookbehind:!0,greedy:!0,inside:{content:{pattern:/(^~~?)[\s\S]+(?=\1$)/,lookbehind:!0,inside:{}},punctuation:/~~?/}},url:{pattern:n('!?\\[(?:(?!\\])<inner>)+\\](?:\\([^\\s)]+(?:[\t ]+"(?:\\\\.|[^"\\\\])*")?\\)|[ \t]?\\[(?:(?!\\])<inner>)+\\])'),lookbehind:!0,greedy:!0,inside:{operator:/^!/,content:{pattern:/(^\[)[^\]]+(?=\])/,lookbehind:!0,inside:{}},variable:{pattern:/(^\][ \t]?\[)[^\]]+(?=\]$)/,lookbehind:!0},url:{pattern:/(^\]\()[^\s)]+/,lookbehind:!0},string:{pattern:/(^[ \t]+)"(?:\\.|[^"\\])*"(?=\)$)/,lookbehind:!0}}}}),["url","bold","italic","strike"].forEach(function(e){["url","bold","italic","strike"].forEach(function(n){e!==n&&(d.languages.markdown[e].inside.content.inside[n]=d.languages.markdown[n])})}),d.hooks.add("after-tokenize",function(n){"markdown"!==n.language&&"md"!==n.language||!function n(e){if(e&&"string"!=typeof e)for(var t=0,a=e.length;t<a;t++){var i=e[t];if("code"===i.type){var r=i.content[1],o=i.content[3];if(r&&o&&"code-language"===r.type&&"code-block"===o.type&&"string"==typeof r.content){var l=r.content.replace(/\b#/g,"sharp").replace(/\b\+\+/g,"pp"),s="language-"+(l=(/[a-z][\w-]*/i.exec(l)||[""])[0].toLowerCase());o.alias?"string"==typeof o.alias?o.alias=[o.alias,s]:o.alias.push(s):o.alias=[s]}}else n(i.content)}}(n.tokens)}),d.hooks.add("wrap",function(n){if("code-block"===n.type){for(var e="",t=0,a=n.classes.length;t<a;t++){var i=n.classes[t],r=/language-(.+)/.exec(i);if(r){e=r[1];break}}var o=d.languages[e];if(o){var l=n.content.replace(/&lt;/g,"<").replace(/&amp;/g,"&");n.content=d.highlight(l,o,e)}else if(e&&"none"!==e&&d.plugins.autoloader){var s="md-"+(new Date).valueOf()+"-"+Math.floor(1e16*Math.random());n.attributes.id=s,d.plugins.autoloader.loadLanguages(e,function(){var n=document.getElementById(s);n&&(n.innerHTML=d.highlight(n.textContent,d.languages[e],e))})}}}),d.languages.md=d.languages.markdown}(Prism);
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+!function(u){function n(n){return n=n.replace(/<inner>/g,function(){return"(?:\\\\.|[^\\\\\n\r]|(?:\n|\r\n?)(?!\n|\r\n?))"}),RegExp("((?:^|[^\\\\])(?:\\\\{2})*)(?:"+n+")")}var e="(?:\\\\.|``(?:[^`\r\n]|`(?!`))+``|`[^`\r\n]+`|[^\\\\|\r\n`])+",t="\\|?__(?:\\|__)+\\|?(?:(?:\n|\r\n?)|(?![^]))".replace(/__/g,function(){return e}),a="\\|?[ \t]*:?-{3,}:?[ \t]*(?:\\|[ \t]*:?-{3,}:?[ \t]*)+\\|?(?:\n|\r\n?)";u.languages.markdown=u.languages.extend("markup",{}),u.languages.insertBefore("markdown","prolog",{"front-matter-block":{pattern:/(^(?:\s*[\r\n])?)---(?!.)[\s\S]*?[\r\n]---(?!.)/,lookbehind:!0,greedy:!0,inside:{punctuation:/^---|---$/,"font-matter":{pattern:/\S+(?:\s+\S+)*/,alias:["yaml","language-yaml"],inside:u.languages.yaml}}},blockquote:{pattern:/^>(?:[\t ]*>)*/m,alias:"punctuation"},table:{pattern:RegExp("^"+t+a+"(?:"+t+")*","m"),inside:{"table-data-rows":{pattern:RegExp("^("+t+a+")(?:"+t+")*$"),lookbehind:!0,inside:{"table-data":{pattern:RegExp(e),inside:u.languages.markdown},punctuation:/\|/}},"table-line":{pattern:RegExp("^("+t+")"+a+"$"),lookbehind:!0,inside:{punctuation:/\||:?-{3,}:?/}},"table-header-row":{pattern:RegExp("^"+t+"$"),inside:{"table-header":{pattern:RegExp(e),alias:"important",inside:u.languages.markdown},punctuation:/\|/}}}},code:[{pattern:/((?:^|\n)[ \t]*\n|(?:^|\r\n?)[ \t]*\r\n?)(?: {4}|\t).+(?:(?:\n|\r\n?)(?: {4}|\t).+)*/,lookbehind:!0,alias:"keyword"},{pattern:/``.+?``|`[^`\r\n]+`/,alias:"keyword"},{pattern:/^```[\s\S]*?^```$/m,greedy:!0,inside:{"code-block":{pattern:/^(```.*(?:\n|\r\n?))[\s\S]+?(?=(?:\n|\r\n?)^```$)/m,lookbehind:!0},"code-language":{pattern:/^(```).+/,lookbehind:!0},punctuation:/```/}}],title:[{pattern:/\S.*(?:\n|\r\n?)(?:==+|--+)(?=[ \t]*$)/m,alias:"important",inside:{punctuation:/==+$|--+$/}},{pattern:/(^\s*)#.+/m,lookbehind:!0,alias:"important",inside:{punctuation:/^#+|#+$/}}],hr:{pattern:/(^\s*)([*-])(?:[\t ]*\2){2,}(?=\s*$)/m,lookbehind:!0,alias:"punctuation"},list:{pattern:/(^\s*)(?:[*+-]|\d+\.)(?=[\t ].)/m,lookbehind:!0,alias:"punctuation"},"url-reference":{pattern:/!?\[[^\]]+\]:[\t ]+(?:\S+|<(?:\\.|[^>\\])+>)(?:[\t ]+(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\)))?/,inside:{variable:{pattern:/^(!?\[)[^\]]+/,lookbehind:!0},string:/(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\))$/,punctuation:/^[\[\]!:]|[<>]/},alias:"url"},bold:{pattern:n("\\b__(?:(?!_)<inner>|_(?:(?!_)<inner>)+_)+__\\b|\\*\\*(?:(?!\\*)<inner>|\\*(?:(?!\\*)<inner>)+\\*)+\\*\\*"),lookbehind:!0,greedy:!0,inside:{content:{pattern:/(^..)[\s\S]+(?=..$)/,lookbehind:!0,inside:{}},punctuation:/\*\*|__/}},italic:{pattern:n("\\b_(?:(?!_)<inner>|__(?:(?!_)<inner>)+__)+_\\b|\\*(?:(?!\\*)<inner>|\\*\\*(?:(?!\\*)<inner>)+\\*\\*)+\\*"),lookbehind:!0,greedy:!0,inside:{content:{pattern:/(^.)[\s\S]+(?=.$)/,lookbehind:!0,inside:{}},punctuation:/[*_]/}},strike:{pattern:n("(~~?)(?:(?!~)<inner>)+?\\2"),lookbehind:!0,greedy:!0,inside:{content:{pattern:/(^~~?)[\s\S]+(?=\1$)/,lookbehind:!0,inside:{}},punctuation:/~~?/}},url:{pattern:n('!?\\[(?:(?!\\])<inner>)+\\](?:\\([^\\s)]+(?:[\t ]+"(?:\\\\.|[^"\\\\])*")?\\)|[ \t]?\\[(?:(?!\\])<inner>)+\\])'),lookbehind:!0,greedy:!0,inside:{operator:/^!/,content:{pattern:/(^\[)[^\]]+(?=\])/,lookbehind:!0,inside:{}},variable:{pattern:/(^\][ \t]?\[)[^\]]+(?=\]$)/,lookbehind:!0},url:{pattern:/(^\]\()[^\s)]+/,lookbehind:!0},string:{pattern:/(^[ \t]+)"(?:\\.|[^"\\])*"(?=\)$)/,lookbehind:!0}}}}),["url","bold","italic","strike"].forEach(function(e){["url","bold","italic","strike"].forEach(function(n){e!==n&&(u.languages.markdown[e].inside.content.inside[n]=u.languages.markdown[n])})}),u.hooks.add("after-tokenize",function(n){"markdown"!==n.language&&"md"!==n.language||!function n(e){if(e&&"string"!=typeof e)for(var t=0,a=e.length;t<a;t++){var i=e[t];if("code"===i.type){var r=i.content[1],o=i.content[3];if(r&&o&&"code-language"===r.type&&"code-block"===o.type&&"string"==typeof r.content){var l=r.content.replace(/\b#/g,"sharp").replace(/\b\+\+/g,"pp"),s="language-"+(l=(/[a-z][\w-]*/i.exec(l)||[""])[0].toLowerCase());o.alias?"string"==typeof o.alias?o.alias=[o.alias,s]:o.alias.push(s):o.alias=[s]}}else n(i.content)}}(n.tokens)}),u.hooks.add("wrap",function(n){if("code-block"===n.type){for(var e="",t=0,a=n.classes.length;t<a;t++){var i=n.classes[t],r=/language-(.+)/.exec(i);if(r){e=r[1];break}}var o=u.languages[e];if(o){var l=document.createElement("div");l.innerHTML=n.content;var s=l.textContent;n.content=u.highlight(s,o,e)}else if(e&&"none"!==e&&u.plugins.autoloader){var d="md-"+(new Date).valueOf()+"-"+Math.floor(1e16*Math.random());n.attributes.id=d,u.plugins.autoloader.loadLanguages(e,function(){var n=document.getElementById(d);n&&(n.innerHTML=u.highlight(n.textContent,u.languages[e],e))})}}}),u.languages.md=u.languages.markdown}(Prism);
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