fix: fix emstrong inside escaped backticks (#3652)

* fix: fix emstrong inside escaped backticks

* add tests

* lint

src/Lexer.ts

@@ -312,16 +312,17 @@ export class _Lexer {
         }
       }
     }
-    // Mask out other blocks
-    while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
-      maskedSrc = maskedSrc.slice(0, match.index) + '[' + 'a'.repeat(match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
-    }
 
     // Mask out escaped characters
     while ((match = this.tokenizer.rules.inline.anyPunctuation.exec(maskedSrc)) != null) {
       maskedSrc = maskedSrc.slice(0, match.index) + '++' + maskedSrc.slice(this.tokenizer.rules.inline.anyPunctuation.lastIndex);
     }
 
+    // Mask out other blocks
+    while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
+      maskedSrc = maskedSrc.slice(0, match.index) + '[' + 'a'.repeat(match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
+    }
+
     let keepPrevChar = false;
     let prevChar = '';
     while (src) {

test/specs/new/escape_tick.html

@@ -0,0 +1,9 @@
+<p><em>italics</em></p>
+<p><strong>bold</strong></p>
+<p><em><strong>bold italics</strong></em></p>
+<p><code>*quoted italics*</code></p>
+<p><code>**quoted bold**</code></p>
+<p><code>***quoted bold italics***</code></p>
+<p>`<em>escaped quoted italics</em>`</p>
+<p>`<strong>escaped quoted bold</strong>`</p>
+<p>`<em><strong>escaped quoted bold italics</strong></em>`</p>

test/specs/new/escape_tick.md

@@ -0,0 +1,17 @@
+*italics*
+
+**bold**
+
+***bold italics***
+
+`*quoted italics*`
+
+`**quoted bold**`
+
+`***quoted bold italics***`
+
+\`*escaped quoted italics*\`
+
+\`**escaped quoted bold**\`
+
+\`***escaped quoted bold italics***\`