diff --git a/demo.html b/demo.html
index fdebd541..eed9b79a 100644
--- a/demo.html
+++ b/demo.html
@@ -151,7 +151,7 @@
Write content using inline or external Markdown.
Instructions and more info available in the [readme](https://github.com/hakimel/reveal.js#markdown).
- ```
+ ```[]
## Markdown support
diff --git a/dist/plugin/markdown.js b/dist/plugin/markdown.js
index 2060705d..c0713999 100644
--- a/dist/plugin/markdown.js
+++ b/dist/plugin/markdown.js
@@ -1,6 +1 @@
-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).RevealMarkdown=t()}(this,(function(){"use strict";function e(t){return(e="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(t)}function t(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function n(e,t){for(var n=0;n"']/),a=/[&<>"']/g,l=/[<>"']|&(?!#?\w+;)/,o=/[<>"']|&(?!#?\w+;)/g,c={"&":"&","<":"<",">":">",'"':""","'":"'"},u=function(e){return c[e]};var h=/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi;function p(e){return e.replace(h,(function(e,t){return"colon"===(t=t.toLowerCase())?":":"#"===t.charAt(0)?"x"===t.charAt(1)?String.fromCharCode(parseInt(t.substring(2),16)):String.fromCharCode(+t.substring(1)):""}))}var g=/(^|[^\[])\^/g;var f=/[^\w:]/g,d=/^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;var b={},k=/^[^:]+:\/*[^/]*$/,m=/^([^:]+:)[\s\S]*$/,x=/^([^:]+:\/*[^/]*)[\s\S]*$/;function y(e,t){b[" "+e]||(k.test(e)?b[" "+e]=e+"/":b[" "+e]=v(e,"/",!0));var n=-1===(e=b[" "+e]).indexOf(":");return"//"===t.substring(0,2)?n?t:e.replace(m,"$1")+t:"/"===t.charAt(0)?n?t:e.replace(x,"$1")+t:e+t}function v(e,t,n){var r=e.length;if(0===r)return"";for(var s=0;s=0&&"\\"===n[s];)r=!r;return r?"|":" |"})).split(/ \|/),r=0;if(n.length>t)n.splice(t);else for(;n.length ?(paragraph|[^\n]*)(?:\n|$))+/,list:/^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:"^ {0,3}(?:<(script|pre|style)[\\s>][\\s\\S]*?(?:[^\\n]*\\n+|$)|comment[^\\n]*(\\n+|$)|<\\?[\\s\\S]*?\\?>\\n*|\\n*|\\n*|)[\\s\\S]*?(?:\\n{2,}|$)|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)|(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$))",def:/^ {0,3}\[(label)\]: *\n? *]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,nptable:E,table:E,lheading:/^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,_paragraph:/^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html)[^\n]+)*)/,text:/^[^\n]+/,_label:/(?!\s*\])(?:\\[\[\]]|[^\[\]])+/,_title:/(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/};C.def=L(C.def).replace("label",C._label).replace("title",C._title).getRegex(),C.bullet=/(?:[*+-]|\d{1,9}\.)/,C.item=/^( *)(bull) ?[^\n]*(?:\n(?!\1bull ?)[^\n]*)*/,C.item=L(C.item,"gm").replace(/bull/g,C.bullet).getRegex(),C.list=L(C.list).replace(/bull/g,C.bullet).replace("hr","\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))").replace("def","\\n+(?="+C.def.source+")").getRegex(),C._tag="address|article|aside|base|basefont|blockquote|body|caption|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr|track|ul",C._comment=//,C.html=L(C.html,"i").replace("comment",C._comment).replace("tag",C._tag).replace("attribute",/ +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/).getRegex(),C.paragraph=L(C._paragraph).replace("hr",C.hr).replace("heading"," {0,3}#{1,6} ").replace("|lheading","").replace("blockquote"," {0,3}>").replace("fences"," {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n").replace("list"," {0,3}(?:[*+-]|1[.)]) ").replace("html",")|<(?:script|pre|style|!--)").replace("tag",C._tag).getRegex(),C.blockquote=L(C.blockquote).replace("paragraph",C.paragraph).getRegex(),C.normal=q({},C),C.gfm=q({},C.normal,{nptable:"^ *([^|\\n ].*\\|.*)\\n *([-:]+ *\\|[-| :]*)(?:\\n((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)",table:"^ *\\|(.+)\\n *\\|?( *[-:]+[-| :]*)(?:\\n *((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)"}),C.gfm.nptable=L(C.gfm.nptable).replace("hr",C.hr).replace("heading"," {0,3}#{1,6} ").replace("blockquote"," {0,3}>").replace("code"," {4}[^\\n]").replace("fences"," {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n").replace("list"," {0,3}(?:[*+-]|1[.)]) ").replace("html",")|<(?:script|pre|style|!--)").replace("tag",C._tag).getRegex(),C.gfm.table=L(C.gfm.table).replace("hr",C.hr).replace("heading"," {0,3}#{1,6} ").replace("blockquote"," {0,3}>").replace("code"," {4}[^\\n]").replace("fences"," {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n").replace("list"," {0,3}(?:[*+-]|1[.)]) ").replace("html",")|<(?:script|pre|style|!--)").replace("tag",C._tag).getRegex(),C.pedantic=q({},C.normal,{html:L("^ *(?:comment *(?:\\n|\\s*$)|<(tag)[\\s\\S]+? *(?:\\n{2,}|\\s*$)|\\s]*)*?/?> *(?:\\n{2,}|\\s*$))").replace("comment",C._comment).replace(/tag/g,"(?!(?:a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)\\b)\\w+(?!:|[^\\w\\s@]*@)\\b").getRegex(),def:/^ *\[([^\]]+)\]: *]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *(?:#+ *)?(?:\n+|$)/,fences:E,paragraph:L(C.normal._paragraph).replace("hr",C.hr).replace("heading"," *#{1,6} *[^\n]").replace("lheading",C.lheading).replace("blockquote"," {0,3}>").replace("|fences","").replace("|list","").replace("|html","").getRegex()});var I={escape:/^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,autolink:/^<(scheme:[^\s\x00-\x1f<>]*|email)>/,url:E,tag:"^comment|^|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>|^<\\?[\\s\\S]*?\\?>|^|^",link:/^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,reflink:/^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/,nolink:/^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/,strong:/^__([^\s_])__(?!_)|^\*\*([^\s*])\*\*(?!\*)|^__([^\s][\s\S]*?[^\s])__(?!_)|^\*\*([^\s][\s\S]*?[^\s])\*\*(?!\*)/,em:/^_([^\s_])_(?!_)|^_([^\s_<][\s\S]*?[^\s_])_(?!_|[^\spunctuation])|^_([^\s_<][\s\S]*?[^\s])_(?!_|[^\spunctuation])|^\*([^\s*<\[])\*(?!\*)|^\*([^\s<"][\s\S]*?[^\s\[\*])\*(?![\]`punctuation])|^\*([^\s*"<\[][\s\S]*[^\s])\*(?!\*)/,code:/^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,br:/^( {2,}|\\)\n(?!\s*$)/,del:E,text:/^(`+|[^`])(?:[\s\S]*?(?:(?=[\\?@\\[^_{|}~"};I.em=L(I.em).replace(/punctuation/g,I._punctuation).getRegex(),I._escapes=/\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g,I._scheme=/[a-zA-Z][a-zA-Z0-9+.-]{1,31}/,I._email=/[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/,I.autolink=L(I.autolink).replace("scheme",I._scheme).replace("email",I._email).getRegex(),I._attribute=/\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/,I.tag=L(I.tag).replace("comment",C._comment).replace("attribute",I._attribute).getRegex(),I._label=/(?:\[[^\[\]]*\]|\\.|`[^`]*`|[^\[\]\\`])*?/,I._href=/<(?:\\[<>]?|[^\s<>\\])*>|[^\s\x00-\x1f]*/,I._title=/"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/,I.link=L(I.link).replace("label",I._label).replace("href",I._href).replace("title",I._title).getRegex(),I.reflink=L(I.reflink).replace("label",I._label).getRegex(),I.normal=q({},I),I.pedantic=q({},I.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/,link:L(/^!?\[(label)\]\((.*?)\)/).replace("label",I._label).getRegex(),reflink:L(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace("label",I._label).getRegex()}),I.gfm=q({},I.normal,{escape:L(I.escape).replace("])","~|])").getRegex(),_extended_email:/[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,url:/^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,_backpedal:/(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,del:/^~+(?=\S)([\s\S]*?\S)~+/,text:/^(`+|[^`])(?:[\s\S]*?(?:(?=[\\2&&void 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*/),cells:s[3]?s[3].replace(/\n$/,"").split("\n"):[]}).header.length===l.align.length){for(e=e.substring(s[0].length),m=s[0],l.raw=m,p=l.align.length,u=0;u ?/gm,""),t.push({type:"blockquote",raw:m,tokens:this.blockTokens(s,[],x)});else if(s=this.rules.block.list.exec(e))for(e=e.substring(s[0].length),o={type:"list",raw:m=s[0],ordered:g=(i=s[2]).length>1,start:g?+i:"",loose:!1,items:[]},t.push(o),n=!1,p=(s=s[0].match(this.rules.block.item)).length,u=0;u1?1===a.length:a.length>1||this.options.smartLists&&a!==i)&&(e=(k=s.slice(u+1).join("\n"))+e,o.raw=o.raw.substring(o.raw.length-k.length),u=p-1)),r=n||/\n\n(?!\s*$)/.test(l),u!==p-1&&(n="\n"===l.charAt(l.length-1),r||(r=n)),r&&(o.loose=!0),d=void 0,(f=/^\[[ xX]\] /.test(l))&&(d=" "!==l[1],l=l.replace(/^\[[ xX]\] +/,"")),o.items.push({raw:m,task:f,checked:d,loose:r,tokens:this.blockTokens(l,[],!1)});else if(s=this.rules.block.html.exec(e))e=e.substring(s[0].length),m=s[0],t.push({type:this.options.sanitize?"paragraph":"html",raw:m,pre:!this.options.sanitizer&&("pre"===s[1]||"script"===s[1]||"style"===s[1]),text:this.options.sanitize?this.options.sanitizer?this.options.sanitizer(s[0]):j(s[0]):s[0]});else if(x&&(s=this.rules.block.def.exec(e)))e=e.substring(s[0].length),s[3]&&(s[3]=s[3].substring(1,s[3].length-1)),h=s[1].toLowerCase().replace(/\s+/g," "),this.tokens.links[h]||(this.tokens.links[h]={href:s[2],title:s[3]});else if((s=this.rules.block.table.exec(e))&&(l={type:"table",header:D(s[1].replace(/^ *| *\| *$/g,"")),align:s[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:s[3]?s[3].replace(/\n$/,"").split("\n"):[]}).header.length===l.align.length){for(e=e.substring(s[0].length),l.raw=s[0],p=l.align.length,u=0;u/i.test(l[0])&&(this.inLink=!1),!this.inRawBlock&&/^<(pre|code|kbd|script)(\s|>)/i.test(l[0])?this.inRawBlock=!0:this.inRawBlock&&/^<\/(pre|code|kbd|script)(\s|>)/i.test(l[0])&&(this.inRawBlock=!1),e=e.substring(l[0].length),h=l[0],r=this.options.sanitize?this.options.sanitizer?this.options.sanitizer(l[0]):j(l[0]):l[0],t.push({type:this.options.sanitize?"text":"html",raw:h,text:r}),p+=r;else if(l=this.rules.inline.link.exec(e))(c=H(l[2],"()"))>-1&&(u=(0===l[0].indexOf("!")?5:4)+l[1].length+c,l[2]=l[2].substring(0,c),l[0]=l[0].substring(0,u).trim(),l[3]=""),e=e.substring(l[0].length),h=l[0],this.inLink=!0,i=l[2],this.options.pedantic?(n=/^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(i))?(i=n[1],a=n[3]):a="":a=l[3]?l[3].slice(1,-1):"",i=i.trim().replace(/^<([\s\S]*)>$/,"$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.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?''+(n?e:V(e,!0))+"
\n":""+(n?e:V(e,!0))+"
"}},{key:"blockquote",value:function(e){return"\n"+e+"
\n"}},{key:"html",value:function(e){return e}},{key:"heading",value:function(e,t,n,r){return this.options.headerIds?"
+
+
+
+
+
+
+