From d25f40995c7c7feb64b887e455568e2268cd5418 Mon Sep 17 00:00:00 2001
From: Tony Brix <tony@brix.ninja>
Date: Sun, 3 Jul 2022 23:39:54 -0500
Subject: [PATCH] fix: fix heading in code in list item

---
 src/Tokenizer.js                     | 5 +++--
 test/specs/new/list_code_header.html | 3 +++
 test/specs/new/list_code_header.md   | 2 ++
 3 files changed, 8 insertions(+), 2 deletions(-)
 create mode 100644 test/specs/new/list_code_header.html
 create mode 100644 test/specs/new/list_code_header.md

diff --git a/src/Tokenizer.js b/src/Tokenizer.js
index 0f77a01050..214669c290 100644
--- a/src/Tokenizer.js
+++ b/src/Tokenizer.js
@@ -226,7 +226,8 @@ export class Tokenizer {
         if (!endEarly) {
           const nextBulletRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:[*+-]|\\d{1,9}[.)])((?: [^\\n]*)?(?:\\n|$))`);
           const hrRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}((?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$)`);
-          const fencesBeginRegex = new RegExp(`^( {0,${Math.min(3, indent - 1)}})(\`\`\`|~~~)`);
+          const fencesBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:\`\`\`|~~~)`);
+          const headingBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}#`);
 
           // Check if following lines should be included in List Item
           while (src) {
@@ -244,7 +245,7 @@ export class Tokenizer {
             }
 
             // End list item if found start of new heading
-            if (this.rules.block.heading.test(line)) {
+            if (headingBeginRegex.test(line)) {
               break;
             }
 
diff --git a/test/specs/new/list_code_header.html b/test/specs/new/list_code_header.html
new file mode 100644
index 0000000000..7fab582d37
--- /dev/null
+++ b/test/specs/new/list_code_header.html
@@ -0,0 +1,3 @@
+<ul>
+  <li>list <h1 id="header">header</h1></li>
+</ul>
diff --git a/test/specs/new/list_code_header.md b/test/specs/new/list_code_header.md
new file mode 100644
index 0000000000..5bf521ce6f
--- /dev/null
+++ b/test/specs/new/list_code_header.md
@@ -0,0 +1,2 @@
+- list
+  # header