def javascript_include_tag(*sources)
options = sources.extract_options!.stringify_keys
cache = options.delete("cache")
recursive = options.delete("recursive")
if ActionController::Base.perform_caching && cache
joined_javascript_name = (cache == true ? "all" : cache) + ".js"
joined_javascript_path = File.join(JAVASCRIPTS_DIR, joined_javascript_name)
unless File.exists?(joined_javascript_path)
JavaScriptSources.create(self, @controller, sources, recursive).write_asset_file_contents(joined_javascript_path)
end
javascript_src_tag(joined_javascript_name, options)
else
JavaScriptSources.create(self, @controller, sources, recursive).expand_sources.collect { |source|
javascript_src_tag(source, options)
}.join("\n")
end
end