From 2dfc0ddf8104b7374846add8b5e9a6ac0acb913b Mon Sep 17 00:00:00 2001
From: Neil Lalonde <neillalonde@gmail.com>
Date: Fri, 14 Oct 2016 15:29:47 -0400
Subject: [PATCH] loosen restrictions on chars in tags

---
 lib/discourse_tagging.rb | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/discourse_tagging.rb b/lib/discourse_tagging.rb
index 42753628a9b..d3e651eb83b 100644
--- a/lib/discourse_tagging.rb
+++ b/lib/discourse_tagging.rb
@@ -1,9 +1,7 @@
-require_dependency 'slug'
-
 module DiscourseTagging
 
   TAGS_FIELD_NAME = "tags"
-  TAGS_FILTER_REGEXP = Slug::CHAR_FILTER_REGEXP
+  TAGS_FILTER_REGEXP = /[\/\?#\[\]@!\$&'\(\)\*\+,;=\.%\\`^\s|\{\}"<>]+/ # /?#[]@!$&'()*+,;=.%\`^|{}"<>
 
 
   def self.tag_topic_by_names(topic, guardian, tag_names_arg)
@@ -143,7 +141,9 @@ module DiscourseTagging
   end
 
   def self.clean_tag(tag)
-    Slug.sanitize(tag.downcase.strip)[0...SiteSetting.max_tag_length]
+    tag.downcase.strip
+       .gsub(/\s+/, '-').squeeze('-')
+       .gsub(TAGS_FILTER_REGEXP, '')[0...SiteSetting.max_tag_length]
   end
 
   def self.staff_only_tags(tags)