1 files changed, 0 insertions, 71 deletions
diff --git a/lib/rdoc/markup/attributes.rb b/lib/rdoc/markup/attributes.rb
deleted file mode 100644
index 8776c4ed29..0000000000
--- a/lib/rdoc/markup/attributes.rb
+++ /dev/null
@@ -1,71 +0,0 @@
-# frozen_string_literal: false
-##
-# We manage a set of attributes.  Each attribute has a symbol name and a bit
-# value.
-
-class RDoc::Markup::Attributes
-
-  ##
-  # The special attribute type.  See RDoc::Markup#add_special
-
-  attr_reader :special
-
-  ##
-  # Creates a new attributes set.
-
-  def initialize
-    @special = 1
-
-    @name_to_bitmap = [
-      [:_SPECIAL_, @special],
-    ]
-
-    @next_bitmap = @special << 1
-  end
-
-  ##
-  # Returns a unique bit for +name+
-
-  def bitmap_for name
-    bitmap = @name_to_bitmap.assoc name
-
-    unless bitmap then
-      bitmap = @next_bitmap
-      @next_bitmap <<= 1
-      @name_to_bitmap << [name, bitmap]
-    else
-      bitmap = bitmap.last
-    end
-
-    bitmap
-  end
-
-  ##
-  # Returns a string representation of +bitmap+
-
-  def as_string bitmap
-    return 'none' if bitmap.zero?
-    res = []
-
-    @name_to_bitmap.each do |name, bit|
-      res << name if (bitmap & bit) != 0
-    end
-
-    res.join ','
-  end
-
-  ##
-  # yields each attribute name in +bitmap+
-
-  def each_name_of bitmap
-    return enum_for __method__, bitmap unless block_given?
-
-    @name_to_bitmap.each do |name, bit|
-      next if bit == @special
-
-      yield name.to_s if (bitmap & bit) != 0
-    end
-  end
-
-end
-