lib/regexp_parser/syntax/versions/1.8.6.rb in regexp_parser-2.1.1 vs lib/regexp_parser/syntax/versions/1.8.6.rb in regexp_parser-2.2.0

@@ -3,10 +3,10 @@
     def initialize
       super
 
       implements :anchor, Anchor::All
       implements :assertion, Assertion::Lookahead
-      implements :backref, [:number]
+      implements :backref, Backreference::Plain
       implements :posixclass, PosixClass::Standard
       implements :group, Group::All
       implements :meta, Meta::Extended
       implements :set, CharacterSet::All
       implements :type, CharacterType::Extended