comment_config.rb in rubocop-0.32.1

- old
+ new

@@ -2,10 +2,11 @@
 
 module RuboCop
   # This class parses the special `rubocop:disable` comments in a source
   # and provides a way to check if each cop is enabled at arbitrary line.
   class CommentConfig
+    UNNEEDED_DISABLE = 'Lint/UnneededDisable'
     COMMENT_DIRECTIVE_REGEXP = Regexp.new(
       '\A# rubocop : ((?:dis|en)able)\b ((?:[\w/]+,? )+)'.gsub(' ', '\s*')
     )
 
     attr_reader :processed_source
@@ -71,10 +72,12 @@
         end
       end
     end
 
     def all_cop_names
-      @all_cop_names ||= Cop::Cop.all.map(&:cop_name)
+      @all_cop_names ||= Cop::Cop.all.map(&:cop_name).reject do |cop_name|
+        cop_name == UNNEEDED_DISABLE
+      end
     end
 
     def comment_only_line?(line_number)
       non_comment_token_line_numbers.none? do |non_comment_line_number|
         non_comment_line_number == line_number