<p></p>
<p><b>@hlfan</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/5844#discussion_r2011365512">lib/rich_text.rb</a>:</p>
<pre style='color:#555'>> @@ -76,11 +76,13 @@ def sanitize(text)
     end
 
     def linkify(text, mode = :urls)
-      if text.html_safe?
-        Rinku.auto_link(text, mode, tag_builder.tag_options(:rel => "nofollow noopener noreferrer")).html_safe
-      else
-        Rinku.auto_link(text, mode, tag_builder.tag_options(:rel => "nofollow noopener noreferrer"))
-      end
+      link_attr = tag_builder.tag_options(:rel => "nofollow noopener noreferrer")
+      Rinku.auto_link(ERB::Util.html_escape(text), mode, link_attr) do |url|
+        %r{^https?://([^/]*)(.*)$}.match(url) do |m|
</pre>
<p dir="auto">Maybe put the www subdomain check into the regex:</p>
⬇️ Suggested change
<pre style="color: #555">-        %r{^https?://([^/]*)(.*)$}.match(url) do |m|
+        %r{^https?://(?:www\.)?([^/]*)(.*)$}.match(url) do |m|
</pre>

<p dir="auto">Otherwise linkify_hosts / linkify_domains could get unwieldy long when including all the domains listed in <a href="//osm.wiki/wiki/Domain_names" rel="nofollow">osm.wiki/wiki/Domain names</a>:</p>
<div class="highlight highlight-source-yaml" dir="auto"><pre class="notranslate"><span class="pl-s">["openstreetmap.com", "openstreetmap.net", "openstreetmaps.org", "openmaps.org", "osm.org"]</span></pre></div>

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