From 94a6ad8af54f7752fd35ca2627bb0bdd10d072c4 Mon Sep 17 00:00:00 2001
From: harada <harada@example.com>
Date: Mon, 25 Mar 2019 16:02:00 +0900
Subject: [PATCH 2/3] Fullwidth characters enclosed in lt and gt.

---
 lib/redmine/wiki_formatting/textile/redcloth3.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/redmine/wiki_formatting/textile/redcloth3.rb b/lib/redmine/wiki_formatting/textile/redcloth3.rb
index 34669d853..3f05fbb34 100644
--- a/lib/redmine/wiki_formatting/textile/redcloth3.rb
+++ b/lib/redmine/wiki_formatting/textile/redcloth3.rb
@@ -1215,6 +1215,6 @@ class RedCloth3 < String
 
     ALLOWED_TAGS = %w(redpre pre code kbd notextile)
     def escape_html_tags(text)
-      text.gsub!(%r{<(\/?([!\w]+)[^<>\n]*)(>?)}) {|m| ALLOWED_TAGS.include?($2) ? "<#{$1}#{$3}" : "&lt;#{$1}#{'&gt;' unless $3.blank?}" }
+      text.gsub!(%r{<(\/?([!_[[:alnum:]]]+)[^<>\n]*)(>?)}) {|m| ALLOWED_TAGS.include?($2) ? "<#{$1}#{$3}" : "&lt;#{$1}#{'&gt;' unless $3.blank?}" }
     end
 end
-- 
2.21.0