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Various bug fixs and enhancements on TeX math rendering #5

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Various bug fixs and enhancements on TeX math rendering #5

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8a393d3
use encodeURIComponent to escape TeX
Feb 24, 2024
10937e5
replace line breaks with spaces in TeX math's <img alt=...>
Feb 24, 2024
9feebce
add \displaystyle before display style TeX math
Feb 25, 2024
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8 changes: 6 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
/*jslint node: true */
'use strict';

const replaceNl = require('./md-html-util').replaceNl;

const escapeHtml = require('./md-html-util').escapeHtml

const unescapeMd = require('./md-html-util').unescapeMd;
Expand Down Expand Up @@ -153,11 +155,13 @@ module.exports = function math_plugin(md, options) {
options = options || {};

var inlineRenderer = function(tokens, idx){
return '<img eeimg="1" src="//www.zhihu.com/equation?tex=' + encodeURI(tokens[idx].content) + '" alt="' + escapeHtml(tokens[idx].content).trim() + '"/>'
return '<img eeimg="1" src="//www.zhihu.com/equation?tex=' + encodeURIComponent(tokens[idx].content)
+ '" alt="' + escapeHtml(replaceNl(tokens[idx].content)).trim() + '"/>'
};

var blockRenderer = function(tokens, idx){
return '<p><img eeimg="1" src="//www.zhihu.com/equation?tex=' + encodeURI(tokens[idx].content) + '" alt="' + escapeHtml(tokens[idx].content).trim() + '"/></p>'
return '<p><img eeimg="1" src="//www.zhihu.com/equation?tex=' + encodeURIComponent('\\displaystyle ' + tokens[idx].content)
+ '" alt="' + escapeHtml(replaceNl('\\displaystyle ' + tokens[idx].content)).trim() + '"/></p>'
}

var imageRenderer = function(tokens, idx) {
Expand Down
6 changes: 5 additions & 1 deletion md-html-util.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,10 @@ function replaceUnsafeChar(ch) {
return HTML_REPLACEMENTS[ch];
}

function replaceNl(str) {
return str.replace(/[\n]/g," ");
}

function escapeHtml(str) {
if (HTML_ESCAPE_TEST_RE.test(str)) {
return str.replace(HTML_ESCAPE_REPLACE_RE, replaceUnsafeChar);
Expand Down Expand Up @@ -49,7 +53,7 @@ function beautifyDate(date) {
}



exports.replaceNl = replaceNl;
exports.escapeHtml = escapeHtml;
exports.unescapeMd = unescapeMd;
exports.removeHtmlTag = removeHtmlTag;
Expand Down