fix: fix escape characters in links (#2628)

* fix: fix escape characters in links

* chore: remove escapes in def

* chore: fix lang replace on undefined

Author: UziTech

src/Tokenizer.js

@@ -103,7 +103,7 @@ export class Tokenizer {
       return {
         type: 'code',
         raw,
-        lang: cap[2] ? cap[2].trim() : cap[2],
+        lang: cap[2] ? cap[2].trim().replace(this.rules.inline._escapes, '$1') : cap[2],
         text
       };
     }
@@ -371,8 +371,8 @@ export class Tokenizer {
         type: 'def',
         tag,
         raw: cap[0],
-        href: cap[2],
-        title: cap[3]
+        href: cap[2] ? cap[2].replace(this.rules.inline._escapes, '$1') : cap[2],
+        title: cap[3] ? cap[3].replace(this.rules.inline._escapes, '$1') : cap[3]
       };
     }
   }

test/specs/commonmark/commonmark.0.30.json

@@ -181,17 +181,15 @@
     "example": 23,
     "start_line": 605,
     "end_line": 611,
-    "section": "Backslash escapes",
-    "shouldFail": true
+    "section": "Backslash escapes"
   },
   {
     "markdown": "``` foo\\+bar\nfoo\n```\n",
     "html": "<pre><code class=\"language-foo+bar\">foo\n</code></pre>\n",
     "example": 24,
     "start_line": 614,
     "end_line": 621,
-    "section": "Backslash escapes",
-    "shouldFail": true
+    "section": "Backslash escapes"
   },
   {
     "markdown": "&nbsp; &amp; &copy; &AElig; &Dcaron;\n&frac34; &HilbertSpace; &DifferentialD;\n&ClockwiseContourIntegral; &ngE;\n",
@@ -1624,8 +1622,7 @@
     "example": 202,
     "start_line": 3307,
     "end_line": 3313,
-    "section": "Link reference definitions",
-    "shouldFail": true
+    "section": "Link reference definitions"
   },
   {
     "markdown": "[foo]\n\n[foo]: url\n",

test/specs/gfm/commonmark.0.30.json

@@ -181,17 +181,15 @@
     "example": 23,
     "start_line": 605,
     "end_line": 611,
-    "section": "Backslash escapes",
-    "shouldFail": true
+    "section": "Backslash escapes"
   },
   {
     "markdown": "``` foo\\+bar\nfoo\n```\n",
     "html": "<pre><code class=\"language-foo+bar\">foo\n</code></pre>\n",
     "example": 24,
     "start_line": 614,
     "end_line": 621,
-    "section": "Backslash escapes",
-    "shouldFail": true
+    "section": "Backslash escapes"
   },
   {
     "markdown": "&nbsp; &amp; &copy; &AElig; &Dcaron;\n&frac34; &HilbertSpace; &DifferentialD;\n&ClockwiseContourIntegral; &ngE;\n",
@@ -1624,8 +1622,7 @@
     "example": 202,
     "start_line": 3307,
     "end_line": 3313,
-    "section": "Link reference definitions",
-    "shouldFail": true
+    "section": "Link reference definitions"
   },
   {
     "markdown": "[foo]\n\n[foo]: url\n",