# File lib/active_support/vendor/builder-2.1.2/builder/xmlmarkup.rb, line 238 def instruct!(directive_tag=:xml, attrs={}) _ensure_no_block block_given? if directive_tag == :xml a = { :version=>"1.0", :encoding=>"UTF-8" } attrs = a.merge attrs end _special( "<?#{directive_tag}", "?>", nil, attrs, [:version, :encoding, :standalone]) end