From 6f94a997e9c0ece4467e47f94f93b89ce5dd3ff8 Mon Sep 17 00:00:00 2001
From: Robin Stocker <robin@nibor.org>
Date: Wed, 6 Mar 2024 13:55:47 +1100
Subject: [PATCH] Fix HTML comment parsing with `-` before closing `-->` (#286)

Fixes #285.
---
 lib/common.js       |  2 +-
 test/regression.txt | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/lib/common.js b/lib/common.js
index 2db7dc81..7f31f265 100644
--- a/lib/common.js
+++ b/lib/common.js
@@ -24,7 +24,7 @@ var ATTRIBUTEVALUESPEC = "(?:" + "\\s*=" + "\\s*" + ATTRIBUTEVALUE + ")";
 var ATTRIBUTE = "(?:" + "\\s+" + ATTRIBUTENAME + ATTRIBUTEVALUESPEC + "?)";
 var OPENTAG = "<" + TAGNAME + ATTRIBUTE + "*" + "\\s*/?>";
 var CLOSETAG = "</" + TAGNAME + "\\s*[>]";
-var HTMLCOMMENT = "<!-->|<!--->|<!--(?:[^-]|-[^-]|--[^>])*-->"
+var HTMLCOMMENT = "<!-->|<!--->|<!--[\\s\\S]*?-->"
 var PROCESSINGINSTRUCTION = "[<][?][\\s\\S]*?[?][>]";
 var DECLARATION = "<![A-Za-z]+" + "[^>]*>";
 var CDATA = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>";
diff --git a/test/regression.txt b/test/regression.txt
index bf34ab6c..40630a7b 100644
--- a/test/regression.txt
+++ b/test/regression.txt
@@ -502,3 +502,19 @@ x<!>
 <p>x<!x></p>
 <p>x&lt;!&gt;</p>
 ````````````````````````````````
+
+#285
+```````````````````````````````` example
+foo <!-- test --->
+
+foo <!-- test ---->
+
+foo <!----->
+
+foo <!-- test --> more -->
+.
+<p>foo <!-- test ---></p>
+<p>foo <!-- test ----></p>
+<p>foo <!-----></p>
+<p>foo <!-- test --> more --&gt;</p>
+````````````````````````````````