mirror of
https://github.com/showdownjs/showdown.git
synced 2024-03-22 13:30:55 +08:00
fix(hashHTMLBlock): fix issue with html breaking markdown parsing
Closes #220
This commit is contained in:
Estevão Soares dos Santos
parent
1011c0f7ac
commit
2746949d7d
256
dist/showdown.js
vendored
256
dist/showdown.js
vendored
@ -1,4 +1,4 @@
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;/*! showdown 22-12-2015 */
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;/*! showdown 01-01-2016 */
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(function(){
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/**
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* Created by Tivie on 13-07-2015.
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@ -431,6 +431,18 @@ showdown.helper.isString = function isString(a) {
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return (typeof a === 'string' || a instanceof String);
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};
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/**
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* Check if var is a function
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* @static
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* @param {string} a
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* @returns {boolean}
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*/
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showdown.helper.isFunction = function isFunction(a) {
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'use strict';
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var getType = {};
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return a && getType.toString.call(a) === '[object Function]';
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};
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/**
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* ForEach helper function
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* @static
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@ -520,6 +532,38 @@ showdown.helper.escapeCharacters = function escapeCharacters(text, charsToEscape
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return text;
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};
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var rgxFindMatchPos = function (str, left, right, flags) {
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'use strict';
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var f = flags || '',
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g = f.indexOf('g') > -1,
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x = new RegExp(left + '|' + right, 'g' + f.replace(/g/g, '')),
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l = new RegExp(left, f.replace(/g/g, '')),
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pos = [],
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t, s, m, start, end;
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do {
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t = 0;
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while ((m = x.exec(str))) {
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if (l.test(m[0])) {
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if (!(t++)) {
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s = x.lastIndex;
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start = s - m[0].length;
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}
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} else if (t) {
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if (!--t) {
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end = m.index + m[0].length;
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pos.push({start: start, end: end});
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if (!g) {
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return pos;
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}
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}
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}
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}
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} while (t && (x.lastIndex = s));
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return pos;
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};
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/**
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* matchRecursiveRegExp
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*
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@ -553,7 +597,7 @@ showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
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'use strict';
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var f = flags || '',
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g = f.indexOf('g') > -1,
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x = new RegExp(left + '|' + right, f),
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x = new RegExp(left + '|' + right, 'g' + f.replace(/g/g, '')),
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l = new RegExp(left, f.replace(/g/g, '')),
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a = [],
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t, s, m, start, end;
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@ -582,6 +626,48 @@ showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
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return a;
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};
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/**
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*
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* @param {string} str
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* @param {string|function} replacement
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* @param {string} left
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* @param {string} right
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* @param {string} flags
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* @returns {string}
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*/
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showdown.helper.replaceRecursiveRegExp = function (str, replacement, left, right, flags) {
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'use strict';
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if (!showdown.helper.isFunction(replacement)) {
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var repStr = replacement;
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replacement = function () {
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return repStr;
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};
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}
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var matchPos = rgxFindMatchPos(str, left, right, flags),
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finalStr = str,
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lng = matchPos.length;
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if (lng > 0) {
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var bits = [];
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if (matchPos[0].start !== 0) {
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bits.push(str.slice(0, matchPos[0].start));
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}
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for (var i = 0; i < lng; ++i) {
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bits.push(replacement(str.slice(matchPos[i].start, matchPos[i].end)));
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if (i < lng - 1) {
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bits.push(str.slice(matchPos[i].end, matchPos[i + 1].start));
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}
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}
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if (matchPos[lng - 1].end < str.length) {
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bits.push(str.slice(matchPos[lng - 1].end));
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}
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finalStr = bits.join('');
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}
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return finalStr;
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};
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/**
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* POLYFILLS
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*/
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@ -1591,135 +1677,63 @@ showdown.subParser('hashElement', function (text, options, globals) {
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showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
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'use strict';
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// attacklab: Double up blank lines to reduce lookaround
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text = text.replace(/\n/g, '\n\n');
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var blockTags = [
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'pre',
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'div',
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'h1',
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'h2',
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'h3',
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'h4',
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'h5',
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'h6',
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'blockquote',
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'table',
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'dl',
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'ol',
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'ul',
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'script',
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'noscript',
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'form',
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'fieldset',
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'iframe',
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'math',
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'style',
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'section',
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'header',
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'footer',
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'nav',
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'article',
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'aside',
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'address',
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'audio',
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'canvas',
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'figure',
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'hgroup',
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'output',
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'video',
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'p'
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],
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repFunc = function (match) {
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return '\n\n~K' + (globals.gHtmlBlocks.push(match) - 1) + 'K\n\n';
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};
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// Hashify HTML blocks:
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// We only want to do this for block-level HTML tags, such as headers,
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// lists, and tables. That's because we still want to wrap <p>s around
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// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
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// phrase emphasis, and spans. The list of tags we're looking for is
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// hard-coded:
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//var block_tags_a =
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// 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del|style|section|header|footer|nav|article|aside';
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// var block_tags_b =
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// 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside';
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for (var i = 0; i < blockTags.length; ++i) {
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text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '^(?: |\\t){0,3}<' + blockTags[i] + '\\b[^>]*>', '</' + blockTags[i] + '>', 'gim');
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}
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// First, look for nested blocks, e.g.:
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// <div>
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// <div>
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// tags for inner block must be indented.
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// </div>
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// </div>
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//
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// The outermost tags must start at the left margin for this to match, and
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// the inner nested divs must be indented.
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// We need to do this before the next, more liberal match, because the next
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// match will start at the first `<div>` and stop at the first `</div>`.
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// attacklab: This regex can be expensive when it fails.
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/*
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var text = text.replace(/
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( // save in $1
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^ // start of line (with /m)
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<($block_tags_a) // start tag = $2
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\b // word break
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// attacklab: hack around khtml/pcre bug...
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[^\r]*?\n // any number of lines, minimally matching
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</\2> // the matching end tag
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[ \t]* // trailing spaces/tabs
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(?=\n+) // followed by a newline
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) // attacklab: there are sentinel newlines at end of document
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/gm,function(){...}};
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*/
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text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,
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showdown.subParser('hashElement')(text, options, globals));
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//
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// Now match more liberally, simply from `\n<tag>` to `</tag>\n`
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//
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/*
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var text = text.replace(/
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( // save in $1
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^ // start of line (with /m)
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<($block_tags_b) // start tag = $2
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\b // word break
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// attacklab: hack around khtml/pcre bug...
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[^\r]*? // any number of lines, minimally matching
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</\2> // the matching end tag
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[ \t]* // trailing spaces/tabs
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(?=\n+) // followed by a newline
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) // attacklab: there are sentinel newlines at end of document
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/gm,function(){...}};
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*/
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text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside|address|audio|canvas|figure|hgroup|output|video)\b[^\r]*?<\/\2>[ \t]*(?=\n+)\n)/gm,
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showdown.subParser('hashElement')(text, options, globals));
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// Special case just for <hr />. It was easier to make a special case than
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// to make the other regex more complicated.
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/*
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text = text.replace(/
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( // save in $1
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\n\n // Starting after a blank line
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[ ]{0,3}
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(<(hr) // start tag = $2
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\b // word break
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([^<>])*? //
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\/?>) // the matching end tag
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[ \t]*
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(?=\n{2,}) // followed by a blank line
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)
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/g,showdown.subParser('hashElement')(text, options, globals));
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*/
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// HR SPECIAL CASE
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text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
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showdown.subParser('hashElement')(text, options, globals));
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showdown.subParser('hashElement')(text, options, globals));
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// Special case for standalone HTML comments:
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/*
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text = text.replace(/
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( // save in $1
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\n\n // Starting after a blank line
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[ ]{0,3} // attacklab: g_tab_width - 1
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<!
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(--[^\r]*?--\s*)+
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>
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[ \t]*
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(?=\n{2,}) // followed by a blank line
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)
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/g,showdown.subParser('hashElement')(text, options, globals));
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*/
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text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,
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showdown.subParser('hashElement')(text, options, globals));
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text = text.replace(/(<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,
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showdown.subParser('hashElement')(text, options, globals));
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// PHP and ASP-style processor instructions (<?...?> and <%...%>)
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/*
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text = text.replace(/
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(?:
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\n\n // Starting after a blank line
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)
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( // save in $1
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[ ]{0,3} // attacklab: g_tab_width - 1
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(?:
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<([?%]) // $2
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[^\r]*?
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\2>
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)
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[ \t]*
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(?=\n{2,}) // followed by a blank line
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)
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/g,showdown.subParser('hashElement')(text, options, globals));
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*/
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text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
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showdown.subParser('hashElement')(text, options, globals));
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showdown.subParser('hashElement')(text, options, globals));
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// attacklab: Undo double lines (see comment at top of this function)
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text = text.replace(/\n\n/g, '\n');
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return text;
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});
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/**
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2
dist/showdown.js.map
vendored
2
dist/showdown.js.map
vendored
File diff suppressed because one or more lines are too long
4
dist/showdown.min.js
vendored
4
dist/showdown.min.js
vendored
File diff suppressed because one or more lines are too long
2
dist/showdown.min.js.map
vendored
2
dist/showdown.min.js.map
vendored
File diff suppressed because one or more lines are too long
@ -17,6 +17,18 @@ showdown.helper.isString = function isString(a) {
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return (typeof a === 'string' || a instanceof String);
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};
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/**
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* Check if var is a function
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* @static
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* @param {string} a
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* @returns {boolean}
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*/
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showdown.helper.isFunction = function isFunction(a) {
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'use strict';
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var getType = {};
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return a && getType.toString.call(a) === '[object Function]';
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};
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/**
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* ForEach helper function
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* @static
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@ -106,6 +118,38 @@ showdown.helper.escapeCharacters = function escapeCharacters(text, charsToEscape
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return text;
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};
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var rgxFindMatchPos = function (str, left, right, flags) {
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'use strict';
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var f = flags || '',
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g = f.indexOf('g') > -1,
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x = new RegExp(left + '|' + right, 'g' + f.replace(/g/g, '')),
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l = new RegExp(left, f.replace(/g/g, '')),
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pos = [],
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t, s, m, start, end;
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do {
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t = 0;
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while ((m = x.exec(str))) {
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if (l.test(m[0])) {
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if (!(t++)) {
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s = x.lastIndex;
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start = s - m[0].length;
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}
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} else if (t) {
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if (!--t) {
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end = m.index + m[0].length;
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pos.push({start: start, end: end});
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if (!g) {
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return pos;
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}
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}
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}
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}
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} while (t && (x.lastIndex = s));
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return pos;
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};
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/**
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* matchRecursiveRegExp
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*
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@ -139,7 +183,7 @@ showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
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'use strict';
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var f = flags || '',
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g = f.indexOf('g') > -1,
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x = new RegExp(left + '|' + right, f),
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x = new RegExp(left + '|' + right, 'g' + f.replace(/g/g, '')),
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l = new RegExp(left, f.replace(/g/g, '')),
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a = [],
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t, s, m, start, end;
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@ -168,6 +212,48 @@ showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
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return a;
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};
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/**
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*
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* @param {string} str
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* @param {string|function} replacement
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* @param {string} left
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* @param {string} right
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* @param {string} flags
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* @returns {string}
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*/
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showdown.helper.replaceRecursiveRegExp = function (str, replacement, left, right, flags) {
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'use strict';
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if (!showdown.helper.isFunction(replacement)) {
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var repStr = replacement;
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replacement = function () {
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return repStr;
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};
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}
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var matchPos = rgxFindMatchPos(str, left, right, flags),
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finalStr = str,
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lng = matchPos.length;
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if (lng > 0) {
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var bits = [];
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if (matchPos[0].start !== 0) {
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bits.push(str.slice(0, matchPos[0].start));
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}
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for (var i = 0; i < lng; ++i) {
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bits.push(replacement(str.slice(matchPos[i].start, matchPos[i].end)));
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if (i < lng - 1) {
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bits.push(str.slice(matchPos[i].end, matchPos[i + 1].start));
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}
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}
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if (matchPos[lng - 1].end < str.length) {
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bits.push(str.slice(matchPos[lng - 1].end));
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}
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finalStr = bits.join('');
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}
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return finalStr;
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};
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/**
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* POLYFILLS
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*/
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@ -1,133 +1,61 @@
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showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
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'use strict';
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|
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// attacklab: Double up blank lines to reduce lookaround
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text = text.replace(/\n/g, '\n\n');
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var blockTags = [
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'pre',
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'div',
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'h1',
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'h2',
|
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'h3',
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'h4',
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'h5',
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'h6',
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'blockquote',
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'table',
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'dl',
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'ol',
|
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'ul',
|
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'script',
|
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'noscript',
|
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'form',
|
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'fieldset',
|
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'iframe',
|
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'math',
|
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'style',
|
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'section',
|
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'header',
|
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'footer',
|
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'nav',
|
||||
'article',
|
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'aside',
|
||||
'address',
|
||||
'audio',
|
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'canvas',
|
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'figure',
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'hgroup',
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'output',
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'video',
|
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'p'
|
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],
|
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repFunc = function (match) {
|
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return '\n\n~K' + (globals.gHtmlBlocks.push(match) - 1) + 'K\n\n';
|
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};
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||||
|
||||
// Hashify HTML blocks:
|
||||
// We only want to do this for block-level HTML tags, such as headers,
|
||||
// lists, and tables. That's because we still want to wrap <p>s around
|
||||
// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
|
||||
// phrase emphasis, and spans. The list of tags we're looking for is
|
||||
// hard-coded:
|
||||
//var block_tags_a =
|
||||
// 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del|style|section|header|footer|nav|article|aside';
|
||||
// var block_tags_b =
|
||||
// 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside';
|
||||
for (var i = 0; i < blockTags.length; ++i) {
|
||||
text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '^(?: |\\t){0,3}<' + blockTags[i] + '\\b[^>]*>', '</' + blockTags[i] + '>', 'gim');
|
||||
}
|
||||
|
||||
// First, look for nested blocks, e.g.:
|
||||
// <div>
|
||||
// <div>
|
||||
// tags for inner block must be indented.
|
||||
// </div>
|
||||
// </div>
|
||||
//
|
||||
// The outermost tags must start at the left margin for this to match, and
|
||||
// the inner nested divs must be indented.
|
||||
// We need to do this before the next, more liberal match, because the next
|
||||
// match will start at the first `<div>` and stop at the first `</div>`.
|
||||
|
||||
// attacklab: This regex can be expensive when it fails.
|
||||
/*
|
||||
var text = text.replace(/
|
||||
( // save in $1
|
||||
^ // start of line (with /m)
|
||||
<($block_tags_a) // start tag = $2
|
||||
\b // word break
|
||||
// attacklab: hack around khtml/pcre bug...
|
||||
[^\r]*?\n // any number of lines, minimally matching
|
||||
</\2> // the matching end tag
|
||||
[ \t]* // trailing spaces/tabs
|
||||
(?=\n+) // followed by a newline
|
||||
) // attacklab: there are sentinel newlines at end of document
|
||||
/gm,function(){...}};
|
||||
*/
|
||||
text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
|
||||
//
|
||||
// Now match more liberally, simply from `\n<tag>` to `</tag>\n`
|
||||
//
|
||||
|
||||
/*
|
||||
var text = text.replace(/
|
||||
( // save in $1
|
||||
^ // start of line (with /m)
|
||||
<($block_tags_b) // start tag = $2
|
||||
\b // word break
|
||||
// attacklab: hack around khtml/pcre bug...
|
||||
[^\r]*? // any number of lines, minimally matching
|
||||
</\2> // the matching end tag
|
||||
[ \t]* // trailing spaces/tabs
|
||||
(?=\n+) // followed by a newline
|
||||
) // attacklab: there are sentinel newlines at end of document
|
||||
/gm,function(){...}};
|
||||
*/
|
||||
text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside|address|audio|canvas|figure|hgroup|output|video)\b[^\r]*?<\/\2>[ \t]*(?=\n+)\n)/gm,
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
|
||||
// Special case just for <hr />. It was easier to make a special case than
|
||||
// to make the other regex more complicated.
|
||||
|
||||
/*
|
||||
text = text.replace(/
|
||||
( // save in $1
|
||||
\n\n // Starting after a blank line
|
||||
[ ]{0,3}
|
||||
(<(hr) // start tag = $2
|
||||
\b // word break
|
||||
([^<>])*? //
|
||||
\/?>) // the matching end tag
|
||||
[ \t]*
|
||||
(?=\n{2,}) // followed by a blank line
|
||||
)
|
||||
/g,showdown.subParser('hashElement')(text, options, globals));
|
||||
*/
|
||||
// HR SPECIAL CASE
|
||||
text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
|
||||
// Special case for standalone HTML comments:
|
||||
|
||||
/*
|
||||
text = text.replace(/
|
||||
( // save in $1
|
||||
\n\n // Starting after a blank line
|
||||
[ ]{0,3} // attacklab: g_tab_width - 1
|
||||
<!
|
||||
(--[^\r]*?--\s*)+
|
||||
>
|
||||
[ \t]*
|
||||
(?=\n{2,}) // followed by a blank line
|
||||
)
|
||||
/g,showdown.subParser('hashElement')(text, options, globals));
|
||||
*/
|
||||
text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
text = text.replace(/(<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
|
||||
// PHP and ASP-style processor instructions (<?...?> and <%...%>)
|
||||
|
||||
/*
|
||||
text = text.replace(/
|
||||
(?:
|
||||
\n\n // Starting after a blank line
|
||||
)
|
||||
( // save in $1
|
||||
[ ]{0,3} // attacklab: g_tab_width - 1
|
||||
(?:
|
||||
<([?%]) // $2
|
||||
[^\r]*?
|
||||
\2>
|
||||
)
|
||||
[ \t]*
|
||||
(?=\n{2,}) // followed by a blank line
|
||||
)
|
||||
/g,showdown.subParser('hashElement')(text, options, globals));
|
||||
*/
|
||||
text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
showdown.subParser('hashElement')(text, options, globals));
|
||||
|
||||
// attacklab: Undo double lines (see comment at top of this function)
|
||||
text = text.replace(/\n\n/g, '\n');
|
||||
return text;
|
||||
|
||||
});
|
||||
|
||||
@ -2,5 +2,6 @@
|
||||
<li><p>A list item with code:</p>
|
||||
|
||||
<pre><code>alert('Hello world!');
|
||||
</code></pre></li>
|
||||
</code></pre>
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
@ -63,6 +63,7 @@ Another [example][wiki] of a link
|
||||
<p><code>foo_bar_baz foo_bar_baz_bar_foo _foo_bar baz_bar_ baz_foo</code></p>
|
||||
|
||||
<!-- These two cases still have bad <ems> because showdown handles them incorrectly -->
|
||||
|
||||
<code>foo_bar_baz foo_bar_baz_bar_foo _foo_bar baz_bar_ baz_foo</code>
|
||||
|
||||
|
||||
|
||||
@ -5,12 +5,14 @@
|
||||
<pre><code class="sh language-sh">$ git clone thing.git
|
||||
|
||||
dfgdfg
|
||||
</code></pre></li>
|
||||
</code></pre>
|
||||
</li>
|
||||
<li>
|
||||
<p>I am another thing!</p>
|
||||
|
||||
<pre><code class="sh language-sh">$ git clone other-thing.git
|
||||
|
||||
foobar
|
||||
</code></pre></li>
|
||||
</ol>
|
||||
</code></pre>
|
||||
</li>
|
||||
</ol>
|
||||
|
||||
5
test/issues/#220.html-breaks-markdown-parsing.html
Normal file
5
test/issues/#220.html-breaks-markdown-parsing.html
Normal file
@ -0,0 +1,5 @@
|
||||
<h2 id="title1">Title 1</h2>
|
||||
<div></div>
|
||||
<h1 id="title2">Title 2</h1>
|
||||
<div>
|
||||
</div>
|
||||
11
test/issues/#220.html-breaks-markdown-parsing.md
Normal file
11
test/issues/#220.html-breaks-markdown-parsing.md
Normal file
@ -0,0 +1,11 @@
|
||||
Title 1
|
||||
-------
|
||||
|
||||
<div></div>
|
||||
|
||||
|
||||
# Title 2
|
||||
|
||||
|
||||
<div>
|
||||
</div>
|
||||
@ -3,5 +3,6 @@
|
||||
|
||||
<pre><code>10 PRINT HELLO INFINITE
|
||||
20 GOTO 10
|
||||
</code></pre></li>
|
||||
</code></pre>
|
||||
</li>
|
||||
</ul>
|
||||
Loading…
x
Reference in New Issue
Block a user