From cec12d4ef90a61a3f38f8ab22c46e76f2a395885 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johan=20Eckerstr=C3=B6m?= <johan@duh.se>
Date: Sat, 16 May 2026 17:53:07 +0200
Subject: [PATCH] Allow dots in wiki link syntax

The `[[...]]` internal link regex excluded `.`, so titles like
`[[1.2.3]]` rendered as literal text instead of a link. Add `.` to
the allowed character class.

Fixes #608
---
 lib/services/markup.rb   | 2 +-
 test/unit/markup_test.rb | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/services/markup.rb b/lib/services/markup.rb
index 500a7eda..2657cee2 100644
--- a/lib/services/markup.rb
+++ b/lib/services/markup.rb
@@ -21,7 +21,7 @@ def call
 end
 
 class WikiLinkFilter < HTMLPipeline::TextFilter
-  WIKI_LINK_REGEXP = /\[\[(?<link>[\d\w\sÅÄÖåäö:-]{1,35})\]\]/i.freeze
+  WIKI_LINK_REGEXP = /\[\[(?<link>[\d\w\sÅÄÖåäö.:-]{1,35})\]\]/i.freeze
 
   def call
     content = text
diff --git a/test/unit/markup_test.rb b/test/unit/markup_test.rb
index 974001c1..00fcb6b8 100644
--- a/test/unit/markup_test.rb
+++ b/test/unit/markup_test.rb
@@ -32,6 +32,13 @@ def test_wiki_link_filter_with_multiple_links_on_two_rows
     assert_equal html_output, Markup.to_html(content)
   end
 
+  def test_wiki_link_filter_with_dot_in_link
+    content     = %([[1.2.3]])
+    html_output = %(<p><a href="/1.2.3">1.2.3</a></p>\n)
+
+    assert_equal html_output, Markup.to_html(content)
+  end
+
   def test_wikified_with_markdown
     content     = %([[Server]])
     html_output = %(<p><a href="/Server">Server</a></p>\n)