isnumber ( ';' STRING )*

Macro

static String	_isnumber	= "${isnumber[;<target>...]}";

public boolean _isnumber(String args[]) throws Exception {
	verifyCommand(args, _isnumber, null, 2, Integer.MAX_VALUE);

	for (int i = 1; i < args.length; i++)
		if (!NUMERIC_P.matcher(args[i]).matches())
			return false;

	return true;
}