From 415557c15bbf6889e598b50fc885e6c22c9b654f Mon Sep 17 00:00:00 2001
From: Titus Wormer <tituswormer@gmail.com>
Date: Mon, 3 Apr 2023 17:33:33 +0200
Subject: [PATCH] Fix inferring IDs of headings with HTML

Closes GH-73.
---
 lib/find/find-references.js |  4 +++-
 package.json                |  2 +-
 test/index.js               | 11 +++++++++++
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/lib/find/find-references.js b/lib/find/find-references.js
index c5e0d35..953dec3 100644
--- a/lib/find/find-references.js
+++ b/lib/find/find-references.js
@@ -76,7 +76,9 @@ export async function findReferences(ctx) {
     let id = String(props.name || props.id || data.id || '')
 
     if (!id && node.type === 'heading') {
-      id = slugs.slug(toString(node, {includeImageAlt: false}))
+      id = slugs.slug(
+        toString(node, {includeImageAlt: false, includeHtml: false})
+      )
     }
 
     if (id) {
diff --git a/package.json b/package.json
index f7be06b..87e22a3 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "@types/mdast": "^3.0.0",
     "github-slugger": "^2.0.0",
     "hosted-git-info": "^5.0.0",
-    "mdast-util-to-string": "^3.0.0",
+    "mdast-util-to-string": "^3.2.0",
     "propose": "0.0.5",
     "to-vfile": "^7.0.0",
     "trough": "^2.0.0",
diff --git a/test/index.js b/test/index.js
index de50db3..fa0d0d3 100644
--- a/test/index.js
+++ b/test/index.js
@@ -76,6 +76,17 @@ test('remark-validate-links', async (t) => {
     'should support landmarks and references to prototypal values'
   )
 
+  const fileHtml = await remark()
+    .use(links)
+    .use(sort)
+    .process('# a <!-- b --> c\n# a <!-- b -->\n# a\n[](#a--c) [](#a-), [](#a)')
+
+  t.deepEqual(
+    fileHtml.messages.map(String),
+    [],
+    'should slug headings with HTML correctly'
+  )
+
   let {stderr} = await exec(
     [
       bin,