Merge branch 'feature/rouge-2.1.0' into 'master'

update rouge to 2.1.0

See merge request !11992

Gemfile.lock

@@ -655,7 +655,7 @@ GEM
     retriable (1.4.1)
     rinku (2.0.0)
     rotp (2.1.2)
-    rouge (2.0.7)
+    rouge (2.1.0)
     rqrcode (0.7.0)
       chunky_png
     rqrcode-rails3 (0.1.7)

lib/rouge/lexers/math.rb

 module Rouge
   module Lexers
-    class Math < Lexer
+    class Math < PlainText
       title "A passthrough lexer used for LaTeX input"
-      desc "A boring lexer that doesn't highlight anything"
-
+      desc "PLEASE REFACTOR - this should be handled by SyntaxHighlightFilter"
       tag 'math'
-      mimetypes 'text/plain'
-
-      default_options token: 'Text'
-
-      def token
-        @token ||= Token[option :token]
-      end
-
-      def stream_tokens(string, &b)
-        yield self.token, string
-      end
     end
   end
 end

lib/rouge/lexers/plantuml.rb

 module Rouge
   module Lexers
-    class Plantuml < Lexer
+    class Plantuml < PlainText
       title "A passthrough lexer used for PlantUML input"
-      desc "A boring lexer that doesn't highlight anything"
-
+      desc "PLEASE REFACTOR - this should be handled by SyntaxHighlightFilter"
       tag 'plantuml'
-      mimetypes 'text/plain'
-
-      default_options token: 'Text'
-
-      def token
-        @token ||= Token[option :token]
-      end
-
-      def stream_tokens(string, &b)
-        yield self.token, string
-      end
     end
   end
 end