Var rename & coverage improve

lib/common/utils.js

@@ -71,10 +71,12 @@ function fromCodePoint(c) {
 }
 
 
-var UNESCAPE_MD_RE = /\\([!"#$%&'()*+,\-.\/:;<=>?@[\\\]^_`{|}~])/g;
-var NAMED_ENTITY_RE = /&([a-z#][a-z0-9]{1,31});/gi;
+var UNESCAPE_MD_RE  = /\\([!"#$%&'()*+,\-.\/:;<=>?@[\\\]^_`{|}~])/g;
+var ENTITY_RE       = /&([a-z#][a-z0-9]{1,31});/gi;
+var UNESCAPE_ALL_RE = new RegExp(UNESCAPE_MD_RE.source + '|' + ENTITY_RE.source, 'gi');
+
 var DIGITAL_ENTITY_TEST_RE = /^#((?:x[a-f0-9]{1,8}|[0-9]{1,8}))/i;
-var UNESCAPE_ALL_RE = new RegExp(UNESCAPE_MD_RE.source + '|' + NAMED_ENTITY_RE.source, 'gi');
+
 var entities = require('./entities');
 
 function replaceEntityPattern(match, name) {
@@ -97,7 +99,7 @@ function replaceEntityPattern(match, name) {
 function replaceEntities(str) {
   if (str.indexOf('&') < 0) { return str; }
 
-  return str.replace(NAMED_ENTITY_RE, replaceEntityPattern);
+  return str.replace(ENTITY_RE, replaceEntityPattern);
 }
 
 function unescapeMd(str) {

test/fixtures/markdown-it/smartquotes.txt

@@ -74,9 +74,9 @@ Should try and find matching quote in this case:
 Should not touch 'inches' in quotes:
 
 .
-"Monitor 21""
+"Monitor 21"" and "Monitor""
 .
-<p>“Monitor 21&quot;”</p>
+<p>“Monitor 21&quot;” and “Monitor”&quot;</p>
 .
 
 

test/utils.js

@@ -82,8 +82,17 @@ describe('Utils', function () {
     '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'.split('').forEach(function (ch) {
       assert.strictEqual(isMdAsciiPunct(ch.charCodeAt(0)), true);
     });
+  });
+
+  it('unescapeMd', function () {
+    var unescapeMd = require('../lib/common/utils').unescapeMd;
 
+    assert.strictEqual(unescapeMd('\\foo'), '\\foo');
+    assert.strictEqual(unescapeMd('foo'), 'foo');
 
+    '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'.split('').forEach(function (ch) {
+      assert.strictEqual(unescapeMd('\\' + ch), ch);
+    });
   });
 
 });