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#
# Handle Unicode-to-Internal conversion
#

module Syck

	#
	# Escape the string, condensing common escapes
	#
	def self.escape( value, skip = "" )
              warn "#{caller[0]}: YAML.escape is deprecated" if $VERBOSE
		value.gsub( /\\/, "\\\\\\" ).
              gsub( /"/, "\\\"" ).
              gsub( /([\x00-\x1f])/ ) do
                 skip[$&] || ESCAPES[ $&.unpack("C")[0] ]
             end
	end

	#
	# Unescape the condenses escapes
	#
	def self.unescape( value )
              warn "#{caller[0]}: YAML.unescape is deprecated" if $VERBOSE
		value.gsub( /\\(?:([nevfbart\\])|0?x([0-9a-fA-F]{2})|u([0-9a-fA-F]{4}))/ ) {
			if $3
				["#$3".hex ].pack('U*')
			elsif $2
				[$2].pack( "H2" )
			else
				UNESCAPES[$1]
			end
		}
	end

end