add support and tests for single quotes

Author: dklimpel

index.js

@@ -56,8 +56,8 @@ function extractHtmlSections(markdown) {
         // remove single line code (if not escaped with "\")
         .replace(/(?<!\\)`[\S\s]+?(?<!\\)`/gm, '');
 
-    const regexAllId = /<(?<tag>[^\s]+).*?id="(?<id>[^"]*?)".*?>/gmi;
-    const regexAName = /<a.*?name="(?<name>[^"]*?)".*?>/gmi;
+    const regexAllId = /<(?<tag>[^\s]+).*?id=["'](?<id>[^"']*?)["'].*?>/gmi;
+    const regexAName = /<a.*?name=["'](?<name>[^"']*?)["'].*?>/gmi;
 
     const sections = []
         .concat(Array.from(markdown.matchAll(regexAllId), (match) => match.groups.id))

test/hash-links.md

@@ -2,9 +2,11 @@
 
 <!-- markdownlint-disable MD033 -->
 <a id="tomato_id"></a>
-
 <a name="tomato_name"></a>
 
+<a id='tomato_id_single_quote'></a>
+<a name='tomato_name_single_quote'></a>
+
 <div id="onion"></div>
 <div id="onion_outer">
     <div id="onion_inner"></div>
@@ -39,6 +41,10 @@ There is an anchor named with `id` [Tomato](#tomato_id).
 
 There is an anchor named with `name` [Tomato](#tomato_name).
 
+There is an anchor named with `id` [Tomato in single quote](#tomato_id_single_quote).
+
+There is an anchor named with `name` [Tomato in single quote](#tomato_name_single_quote).
+
 There is an anchor in code [Tomato in code](#tomato_code).
 
 There is an anchor in escaped code [Tomato in escaped backticks](#tomato_escaped_backticks).

test/markdown-link-check.test.js

@@ -379,6 +379,8 @@ describe('markdown-link-check', function () {
                 { link: '#potato', statusCode: 404, err: null, status: 'dead' },
                 { link: '#tomato_id', statusCode: 200, err: null, status: 'alive' },
                 { link: '#tomato_name', statusCode: 200, err: null, status: 'alive' },
+                { link: '#tomato_id_single_quote', statusCode: 200, err: null, status: 'alive' },
+                { link: '#tomato_name_single_quote', statusCode: 200, err: null, status: 'alive' },
                 { link: '#tomato_code', statusCode: 404, err: null, status: 'dead' },
                 { link: '#tomato_escaped_backticks', statusCode: 200, err: null, status: 'alive' },
                 { link: '#tomato_comment', statusCode: 404, err: null, status: 'dead' },