# File lib/addressable/idna.rb, line 47 def self.to_ascii(input) input = input.dup if input.respond_to?(:force_encoding) input.force_encoding(Encoding::ASCII_8BIT) end if input =~ UTF8_REGEX && input =~ UTF8_REGEX_MULTIBYTE parts = unicode_downcase(input).split('.') parts.map! do |part| if part.respond_to?(:force_encoding) part.force_encoding(Encoding::ASCII_8BIT) end if part =~ UTF8_REGEX && part =~ UTF8_REGEX_MULTIBYTE ACE_PREFIX + punycode_encode(unicode_normalize_kc(part)) else part end end parts.join('.') else input end end