From 34458a988acb288b1221df3f546423200ad7083c Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Thu, 16 Apr 2020 15:27:44 +0200
Subject: [PATCH] fix code highlighting in markdown decks

---
 dist/plugin/markdown.js     | 2 +-
 plugin/markdown/markdown.js | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/dist/plugin/markdown.js b/dist/plugin/markdown.js
index 7aa624e3..b4a31099 100644
--- a/dist/plugin/markdown.js
+++ b/dist/plugin/markdown.js
@@ -1,4 +1,4 @@
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t,n,r,s,i,a,l=e.length;for(t=0;t<l;t++)switch((a=e[t]).type){case"paragraph":case"text":case"heading":a.tokens=[],this.inlineTokens(a.text,a.tokens);break;case"table":for(a.tokens={header:[],cells:[]},s=a.header.length,n=0;n<s;n++)a.tokens.header[n]=[],this.inlineTokens(a.header[n],a.tokens.header[n]);for(s=a.cells.length,n=0;n<s;n++)for(i=a.cells[n],a.tokens.cells[n]=[],r=0;r<i.length;r++)a.tokens.cells[n][r]=[],this.inlineTokens(i[r],a.tokens.cells[n][r]);break;case"blockquote":this.inline(a.tokens);break;case"list":for(s=a.items.length,n=0;n<s;n++)this.inline(a.items[n].tokens)}return e}},{key:"inlineTokens",value:function(e,t){for(var n,r,s,i,a,l,o,c,u,h,p="";e;)if(l=this.rules.inline.escape.exec(e))e=e.substring(l[0].length),h=l[0],p+=r=j(l[1]),t.push({type:"escape",raw:h,text:r});else if(l=this.rules.inline.tag.exec(e))!this.inLink&&/^<a /i.test(l[0])?this.inLink=!0:this.inLink&&/^<\/a>/i.test(l[0])&&(this.inLink=!1),!this.inRawBlock&&/^<(pre|code|kbd|script)(\s|>)/i.test(l[0])?this.inRawBlock=!0:this.inRawBlock&&/^<\/(pre|code|kbd|script)(\s|>)/i.test(l[0])&&(this.inRawBlock=!1),e=e.substring(l[0].length),h=l[0],r=this.options.sanitize?this.options.sanitizer?this.options.sanitizer(l[0]):j(l[0]):l[0],t.push({type:this.options.sanitize?"text":"html",raw:h,text:r}),p+=r;else if(l=this.rules.inline.link.exec(e))(c=H(l[2],"()"))>-1&&(u=(0===l[0].indexOf("!")?5:4)+l[1].length+c,l[2]=l[2].substring(0,c),l[0]=l[0].substring(0,u).trim(),l[3]=""),e=e.substring(l[0].length),h=l[0],this.inLink=!0,i=l[2],this.options.pedantic?(n=/^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(i))?(i=n[1],a=n[3]):a="":a=l[3]?l[3].slice(1,-1):"",i=i.trim().replace(/^<([\s\S]*)>$/,"$1"),p+=this.outputLink(l,{href:this.escapes(i),title:this.escapes(a)},t,h),this.inLink=!1;else if((l=this.rules.inline.reflink.exec(e))||(l=this.rules.inline.nolink.exec(e))){if(e=e.substring(l[0].length),h=l[0],n=(l[2]||l[1]).replace(/\s+/g," "),!(n=this.tokens.links[n.toLowerCase()])||!n.href){p+=r=l[0].charAt(0),t.push({type:"text",raw:r,text:r}),e=l[0].substring(1)+e;continue}this.inLink=!0,p+=this.outputLink(l,n,t,h),this.inLink=!1}else if(l=this.rules.inline.strong.exec(e))e=e.substring(l[0].length),h=l[0],s=t?[]:null,r=this.inlineTokens(l[4]||l[3]||l[2]||l[1],s),t.push({type:"strong",raw:h,text:r,tokens:s}),p+=r;else if(l=this.rules.inline.em.exec(e))e=e.substring(l[0].length),h=l[0],s=t?[]:null,r=this.inlineTokens(l[6]||l[5]||l[4]||l[3]||l[2]||l[1],s),t.push({type:"em",raw:h,text:r,tokens:s}),p+=r;else if(l=this.rules.inline.code.exec(e))e=e.substring(l[0].length),h=l[0],r=j(l[2].trim(),!0),t.push({type:"codespan",raw:h,text:r}),p+=r;else if(l=this.rules.inline.br.exec(e))e=e.substring(l[0].length),h=l[0],t.push({type:"br",raw:h}),p+="\n";else if(l=this.rules.inline.del.exec(e))e=e.substring(l[0].length),h=l[0],s=t?[]:null,r=this.inlineTokens(l[1],s),t.push({type:"del",raw:h,text:r,tokens:s}),p+=r;else if(l=this.rules.inline.autolink.exec(e))e=e.substring(l[0].length),h=l[0],i="@"===l[2]?"mailto:"+(r=j(this.options.mangle?this.mangle(l[1]):l[1])):r=j(l[1]),t.push({type:"link",raw:h,text:r,href:i,tokens:[{type:"text",raw:r,text:r}]}),p+=r;else if(this.inLink||!(l=this.rules.inline.url.exec(e))){if(l=this.rules.inline.text.exec(e))e=e.substring(l[0].length),h=l[0],r=this.inRawBlock?this.options.sanitize?this.options.sanitizer?this.options.sanitizer(l[0]):j(l[0]):l[0]:j(this.options.smartypants?this.smartypants(l[0]):l[0]),t.push({type:"text",raw:h,text:r}),p+=r;else if(e){var g="Infinite loop on byte: "+e.charCodeAt(0);if(!this.options.silent)throw new Error(g);console.error(g)}}else{if("@"===l[2])i="mailto:"+(r=j(this.options.mangle?this.mangle(l[0]):l[0]));else{do{o=l[0],l[0]=this.rules.inline._backpedal.exec(l[0])[0]}while(o!==l[0]);r=j(l[0]),i="www."===l[1]?"http://"+r:r}e=e.substring(l[0].length),h=l[0],t.push({type:"link",raw:h,text:r,href:i,tokens:[{type:"text",raw:r,text:r}]}),p+=r}return p}},{key:"escapes",value:function(e){return e?e.replace(N._escapes,"$1"):e}},{key:"outputLink",value:function(e,t,n,r){var s=t.href,i=t.title?j(t.title):null,a=n?[]:null;if("!"!==e[0].charAt(0)){var l=this.inlineTokens(e[1],a);return n.push({type:"link",raw:r,text:l,href:s,title:i,tokens:a}),l}var o=j(e[1]);return n.push({type:"image",raw:r,text:o,href:s,title:i}),o}},{key:"smartypants",value:function(e){return e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…")}},{key:"mangle",value:function(e){var t,n,r="",s=e.length;for(t=0;t<s;t++)n=e.charCodeAt(t),Math.random()>.5&&(n="x"+n.toString(16)),r+="&#"+n+";";return r}}],[{key:"lex",value:function(t,n){return new e(n).lex(t)}},{key:"rules",get:function(){return{block:P,inline:N}}}]),e}(),U=s.defaults,F=S,V=w,X=function(){function e(n){t(this,e),this.options=n||U}return r(e,[{key:"code",value:function(e,t,n){var r=(t||"").match(/\S*/)[0];if(this.options.highlight){var s=this.options.highlight(e,r);null!=s&&s!==e&&(n=!0,e=s)}return r?'<pre><code class="'+this.options.langPrefix+V(r,!0)+'">'+(n?e:V(e,!0))+"</code></pre>\n":"<pre><code>"+(n?e:V(e,!0))+"</code></pre>"}},{key:"blockquote",value:function(e){return"<blockquote>\n"+e+"</blockquote>\n"}},{key:"html",value:function(e){return e}},{key:"heading",value:function(e,t,n,r){return this.options.headerIds?"<h"+t+' id="'+this.options.headerPrefix+r.slug(n)+'">'+e+"</h"+t+">\n":"<h"+t+">"+e+"</h"+t+">\n"}},{key:"hr",value:function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"}},{key:"list",value:function(e,t,n){var r=t?"ol":"ul";return"<"+r+(t&&1!==n?' start="'+n+'"':"")+">\n"+e+"</"+r+">\n"}},{key:"listitem",value:function(e){return"<li>"+e+"</li>\n"}},{key:"checkbox",value:function(e){return"<input "+(e?'checked="" ':"")+'disabled="" type="checkbox"'+(this.options.xhtml?" /":"")+"> "}},{key:"paragraph",value:function(e){return"<p>"+e+"</p>\n"}},{key:"table",value:function(e,t){return t&&(t="<tbody>"+t+"</tbody>"),"<table>\n<thead>\n"+e+"</thead>\n"+t+"</table>\n"}},{key:"tablerow",value:function(e){return"<tr>\n"+e+"</tr>\n"}},{key:"tablecell",value:function(e,t){var n=t.header?"th":"td";return(t.align?"<"+n+' align="'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"}},{key:"strong",value:function(e){return"<strong>"+e+"</strong>"}},{key:"em",value:function(e){return"<em>"+e+"</em>"}},{key:"codespan",value:function(e){return"<code>"+e+"</code>"}},{key:"br",value:function(){return this.options.xhtml?"<br/>":"<br>"}},{key:"del",value:function(e){return"<del>"+e+"</del>"}},{key:"link",value:function(e,t,n){if(null===(e=F(this.options.sanitize,this.options.baseUrl,e)))return n;var r='<a href="'+V(e)+'"';return t&&(r+=' title="'+t+'"'),r+=">"+n+"</a>"}},{key:"image",value:function(e,t,n){if(null===(e=F(this.options.sanitize,this.options.baseUrl,e)))return n;var r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">"}},{key:"text",value:function(e){return e}}]),e}(),G=function(){function e(){t(this,e)}return r(e,[{key:"strong",value:function(e){return e}},{key:"em",value:function(e){return e}},{key:"codespan",value:function(e){return e}},{key:"del",value:function(e){return e}},{key:"html",value:function(e){return e}},{key:"text",value:function(e){return e}},{key:"link",value:function(e,t,n){return""+n}},{key:"image",value:function(e,t,n){return""+n}},{key:"br",value:function(){return""}}]),e}(),J=function(){function e(){t(this,e),this.seen={}}return r(e,[{key:"slug",value:function(e){var t=e.toLowerCase().trim().replace(/<[!\/a-z].*?>/gi,"").replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g,"").replace(/\s/g,"-");if(this.seen.hasOwnProperty(t)){var n=t;do{this.seen[n]++,t=n+"-"+this.seen[n]}while(this.seen.hasOwnProperty(t))}return this.seen[t]=0,t}}]),e}(),K=s.defaults,Q=_,W=function(){function e(n){t(this,e),this.options=n||K,this.options.renderer=this.options.renderer||new X,this.renderer=this.options.renderer,this.renderer.options=this.options,this.textRenderer=new G,this.slugger=new J}return r(e,[{key:"parse",value:function(e){var t,n,r,s,i,a,l,o,c,u,h,p,g,f,d,b,k,m,x=!(arguments.length>1&&void 0!==arguments[1])||arguments[1],y="",v=e.length;for(t=0;t<v;t++)switch((u=e[t]).type){case"space":continue;case"hr":y+=this.renderer.hr();continue;case"heading":y+=this.renderer.heading(this.parseInline(u.tokens),u.depth,Q(this.parseInline(u.tokens,this.textRenderer)),this.slugger);continue;case"code":y+=this.renderer.code(u.text,u.lang,u.escaped);continue;case"table":for(o="",l="",s=u.header.length,n=0;n<s;n++)l+=this.renderer.tablecell(this.parseInline(u.tokens.header[n]),{header:!0,align:u.align[n]});for(o+=this.renderer.tablerow(l),c="",s=u.cells.length,n=0;n<s;n++){for(l="",i=(a=u.tokens.cells[n]).length,r=0;r<i;r++)l+=this.renderer.tablecell(this.parseInline(a[r]),{header:!1,align:u.align[r]});c+=this.renderer.tablerow(l)}y+=this.renderer.table(o,c);continue;case"blockquote":c=this.parse(u.tokens),y+=this.renderer.blockquote(c);continue;case"list":for(h=u.ordered,p=u.start,g=u.loose,s=u.items.length,c="",n=0;n<s;n++)b=(d=u.items[n]).checked,k=d.task,f="",d.task&&(m=this.renderer.checkbox(b),g?"text"===d.tokens[0].type?(d.tokens[0].text=m+" "+d.tokens[0].text,d.tokens[0].tokens&&d.tokens[0].tokens.length>0&&"text"===d.tokens[0].tokens[0].type&&(d.tokens[0].tokens[0].text=m+" "+d.tokens[0].tokens[0].text)):d.tokens.unshift({type:"text",text:m}):f+=m),f+=this.parse(d.tokens,g),c+=this.renderer.listitem(f,k,b);y+=this.renderer.list(c,h,p);continue;case"html":y+=this.renderer.html(u.text);continue;case"paragraph":y+=this.renderer.paragraph(this.parseInline(u.tokens));continue;case"text":for(c=u.tokens?this.parseInline(u.tokens):u.text;t+1<v&&"text"===e[t+1].type;)c+="\n"+((u=e[++t]).tokens?this.parseInline(u.tokens):u.text);y+=x?this.renderer.paragraph(c):c;continue;default:var w='Token with "'+u.type+'" type was not found.';if(this.options.silent)return void console.error(w);throw new Error(w)}return y}},{key:"parseInline",value:function(e,t){t=t||this.renderer;var n,r,s="",i=e.length;for(n=0;n<i;n++)switch((r=e[n]).type){case"escape":s+=t.text(r.text);break;case"html":s+=t.html(r.text);break;case"link":s+=t.link(r.href,r.title,this.parseInline(r.tokens,t));break;case"image":s+=t.image(r.href,r.title,r.text);break;case"strong":s+=t.strong(this.parseInline(r.tokens,t));break;case"em":s+=t.em(this.parseInline(r.tokens,t));break;case"codespan":s+=t.codespan(r.text);break;case"br":s+=t.br();break;case"del":s+=t.del(this.parseInline(r.tokens,t));break;case"text":s+=t.text(r.text);break;default:var a='Token with "'+r.type+'" type was not found.';if(this.options.silent)return void console.error(a);throw new Error(a)}return s}}],[{key:"parse",value:function(t,n){return new e(n).parse(t)}}]),e}(),Y=A,ee=T,te=w,ne=s.getDefaults,re=s.changeDefaults,se=s.defaults;function ie(t,n,r){if(null==t)throw new Error("marked(): input parameter is undefined or null");if("string"!=typeof t)throw new Error("marked(): input parameter is of type "+Object.prototype.toString.call(t)+", string expected");if(r||"function"==typeof n){var s=function(){r||(r=n,n=null),n=Y({},ie.defaults,n||{}),ee(n);var e,s,i=n.highlight,a=0;try{e=B.lex(t,n)}catch(e){return{v:r(e)}}s=e.length;var l=function(t){if(t)return n.highlight=i,r(t);var s;try{s=W.parse(e,n)}catch(e){t=e}return n.highlight=i,t?r(t):r(null,s)};if(!i||i.length<3)return{v:l()};if(delete n.highlight,!s)return{v:l()};for(;a<e.length;a++)!function(e){"code"!==e.type?--s||l():i(e.text,e.lang,(function(t,n){return t?l(t):null==n||n===e.text?--s||l():(e.text=n,e.escaped=!0,void(--s||l()))}))}(e[a]);return{v:void 0}}();if("object"===e(s))return s.v}try{return n=Y({},ie.defaults,n||{}),ee(n),W.parse(B.lex(t,n),n)}catch(e){if(e.message+="\nPlease report this to https://github.com/markedjs/marked.",(n||ie.defaults).silent)return"<p>An error occurred:</p><pre>"+te(e.message+"",!0)+"</pre>";throw e}}ie.options=ie.setOptions=function(e){return Y(ie.defaults,e),re(ie.defaults),ie},ie.getDefaults=ne,ie.defaults=se,ie.Parser=W,ie.parser=W.parse,ie.Renderer=X,ie.TextRenderer=G,ie.Lexer=B,ie.lexer=B.lex,ie.Slugger=J,ie.parse=ie;var ae=ie,le={id:"markdown",init:function(e){void 0!==window.hljs&&ae.setOptions({highlight:function(e,t){return window.hljs.highlightAuto(e,t?[t]:null).value}});var t=e.getConfig().markdown;return t&&ae.setOptions(t),ge(e.getRevealElement()).then(de)},processSlides:ge,convertSlides:de,slidify:pe,marked:ae};
 /*!
    * The reveal.js markdown plugin. Handles parsing of
    * markdown inside of presentations as well as loading
diff --git a/plugin/markdown/markdown.js b/plugin/markdown/markdown.js
index 8a696e62..6db79fae 100755
--- a/plugin/markdown/markdown.js
+++ b/plugin/markdown/markdown.js
@@ -15,11 +15,10 @@ export default {
 	 * current reveal.js deck.
 	 */
 	init: function( deck ) {
-
-		if( typeof hljs !== 'undefined' ) {
+		if( typeof window.hljs !== 'undefined' ) {
 			marked.setOptions({
 				highlight: function( code, lang ) {
-					return hljs.highlightAuto( code, [lang] ).value;
+					return window.hljs.highlightAuto( code, lang ? [lang] : null ).value;
 				}
 			});
 		}