add_alias

# File lib/rdoc/context.rb, line 225
  def add_alias(an_alias)
    meth = find_instance_method_named(an_alias.old_name)

    if meth then
      add_alias_impl an_alias, meth
    else
      add_to @aliases, an_alias
      unmatched_alias_list = @unmatched_alias_lists[an_alias.old_name] ||= []
      unmatched_alias_list.push an_alias
    end

    an_alias
  end