find_attr_comment

# File lib/rdoc/parser/c.rb, line 267
  def find_attr_comment(attr_name)
    if @content =~ %{((?>/\*.*?\*/\s+))
                   rb_define_attr\((?:\s*(\w+),)?\s*"#{attr_name}"\s*,.*?\)\s*;}mi
      $1
    elsif @content =~ %{Document-attr:\s#{attr_name}\s*?\n((?>.*?\*/))}
      $1
    else
      ''
    end
  end