public static ArgumentParser newArgumentParser(String prog,
boolean addHelp, String prefixChars, String fromFilePrefix) {
return new ArgumentParserImpl(prog, addHelp, prefixChars,
fromFilePrefix, cjkWidthHack_
&& cjkWidthLangs_.contains(Locale.getDefault()
.getLanguage()) ? new CJKTextWidthCounter()
: new ASCIITextWidthCounter());
}