Improve replaceEntities handling

1. Use unescapeAll instead of replaceEntities(unescapeMd(...))
2. Move replaceEntities(title) out of the renderer.

lib/helpers/parse_link_title.js

@@ -3,7 +3,7 @@
 'use strict';
 
 
-var unescapeMd = require('../common/utils').unescapeMd;
+var unescapeAll = require('../common/utils').unescapeAll;
 
 
 module.exports = function parseLinkTitle(str, pos, max) {
@@ -34,7 +34,7 @@ module.exports = function parseLinkTitle(str, pos, max) {
     if (code === marker) {
       result.pos = pos + 1;
       result.lines = lines;
-      result.str = unescapeMd(str.slice(start + 1, pos));
+      result.str = unescapeAll(str.slice(start + 1, pos));
       result.ok = true;
       return result;
     } else if (code === 0x0A) {

lib/renderer.js

@@ -9,8 +9,7 @@
 
 
 var assign          = require('./common/utils').assign;
-var unescapeMd      = require('./common/utils').unescapeMd;
-var replaceEntities = require('./common/utils').replaceEntities;
+var unescapeAll     = require('./common/utils').unescapeAll;
 var escapeHtml      = require('./common/utils').escapeHtml;
 
 
@@ -39,7 +38,7 @@ rules.fence = function (tokens, idx, options /*, env, self*/) {
   var highlighted;
 
   if (token.params) {
-    langName = escapeHtml(replaceEntities(unescapeMd(token.params.split(/\s+/g)[0])));
+    langName = escapeHtml(unescapeAll(token.params.split(/\s+/g)[0]));
     langClass = ' class="' + langPrefix + langName + '"';
   }
 
@@ -101,7 +100,7 @@ rules.paragraph_close = function (tokens, idx /*, options, env */) {
 
 
 rules.link_open = function (tokens, idx /*, options, env */) {
-  var title = tokens[idx].title ? (' title="' + escapeHtml(replaceEntities(tokens[idx].title)) + '"') : '';
+  var title = tokens[idx].title ? (' title="' + escapeHtml(tokens[idx].title) + '"') : '';
   var target = tokens[idx].target ? (' target="' + escapeHtml(tokens[idx].target) + '"') : '';
   return '<a href="' + escapeHtml(tokens[idx].href) + '"' + title + target + '>';
 };
@@ -112,7 +111,7 @@ rules.link_close = function (/* tokens, idx, options, env */) {
 
 rules.image = function (tokens, idx, options, env, self) {
   var src = ' src="' + escapeHtml(tokens[idx].src) + '"';
-  var title = tokens[idx].title ? (' title="' + escapeHtml(replaceEntities(tokens[idx].title)) + '"') : '';
+  var title = tokens[idx].title ? (' title="' + escapeHtml(tokens[idx].title) + '"') : '';
   var alt = ' alt="' + self.renderInlineAsText(tokens[idx].tokens, options, env) + '"';
   var suffix = options.xhtmlOut ? ' /' : '';
   return '<img' + src + alt + title + suffix + '>';

test/fixtures/markdown-it/commonmark_extras.txt

@@ -88,15 +88,27 @@ Autolinks do not allow escaping:
 Escaping entities in links:
 
 .
-[](<&quot;>)
+[](<&quot;> "&amp;&ouml;")
 
-[](<\&quot;>)
+[](<\&quot;> "\&amp;\&ouml;")
 
-[](<\\&quot;>)
+[](<\\&quot;> "\\&quot;\\&ouml;")
 .
-<p><a href="%22"></a></p>
-<p><a href="&amp;quot;"></a></p>
-<p><a href="%5C%22"></a></p>
+<p><a href="%22" title="&amp;ö"></a></p>
+<p><a href="&amp;quot;" title="&amp;amp;&amp;ouml;"></a></p>
+<p><a href="%5C%22" title="\&quot;\ö"></a></p>
+.
+
+
+Checking combination of replaceEntities and unescapeMd:
+
+.
+~~~ &amp;\&amp;\\&amp;
+just a funny little fence
+~~~
+.
+<pre><code class="&amp;&amp;amp;\&amp;">just a funny little fence
+</code></pre>
 .