Check string size for non ascii code
#!/usr/bin/ruby -Ku -rjcode string = "\xef\xbc\xa1" + "\xef\xbc\xa2" + "\xef\xbc\xa3" + "\xef\xbc\xa4" + "\xef\xbc\xa5" + "\xef\xbc\xa6" string.size # => 18 string.jsize # => 6