# File lib/rubygems/source_info_cache.rb, line 282
  def search(pattern, platform_only = false, all = false)
    read_all_cache_data if all

    cache_data.map do |source_uri, sic_entry|
      next unless Gem.sources.include? source_uri
      # TODO - Remove this gunk after 2008/11
      unless pattern.kind_of?(Gem::Dependency)
        pattern = Gem::Dependency.new(pattern, Gem::Requirement.default) 
      end
      sic_entry.source_index.search pattern, platform_only
    end.flatten.compact
  end