1 files changed, 4 insertions, 21 deletions
diff --git a/lib/banzai/filter/front_matter_filter.rb b/lib/banzai/filter/front_matter_filter.rb
index 544231adea4..5900e762244 100644
--- a/lib/banzai/filter/front_matter_filter.rb
+++ b/lib/banzai/filter/front_matter_filter.rb
@@ -3,28 +3,11 @@
 module Banzai
   module Filter
     class FrontMatterFilter < HTML::Pipeline::Filter
-      DELIM_LANG = {
-        '---' => 'yaml',
-        '+++' => 'toml',
-        ';;;' => 'json'
-      }.freeze
-
-      DELIM = Regexp.union(DELIM_LANG.keys)
-
-      PATTERN = %r{
-        \A(?:[^\r\n]*coding:[^\r\n]*)?         # optional encoding line
-        \s*
-        ^(?<delim>#{DELIM})[ \t]*(?<lang>\S*)  # opening front matter marker (optional language specifier)
-        \s*
-        ^(?<front_matter>.*?)                  # front matter (not greedy)
-        \s*
-        ^\k<delim>                             # closing front matter marker
-        \s*
-      }mx.freeze
-
       def call
-        html.sub(PATTERN) do |_match|
-          lang = $~[:lang].presence || DELIM_LANG[$~[:delim]]
+        lang_mapping = Gitlab::FrontMatter::DELIM_LANG
+
+        html.sub(Gitlab::FrontMatter::PATTERN) do |_match|
+          lang = $~[:lang].presence || lang_mapping[$~[:delim]]
 
           ["```#{lang}", $~[:front_matter], "```", "\n"].join("\n")
         end