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To: jmallett@FreeBSD.org
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org,
	src-committers@FreeBSD.org, obrien@FreeBSD.org, brde@optusnet.com.au
Subject: Re: svn commit: r212374 - head/usr.bin/printf
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In message: <AANLkTimJfeXdP_9caoqBg3WPxpbgLRutDzBw+XM6veo5@mail.gmail.c=
om>
            Juli Mallett <jmallett@FreeBSD.org> writes:
: On Thu, Sep 16, 2010 at 04:36, Bruce Evans <brde@optusnet.com.au> wro=
te:
: > WHat about the lesser burder on a character or two for putting -- i=
n the
: > synopsis where it is more visible:
: >
: > =A0 =A0 =A0 =A0printf [--] format [arguments ...]
: =

: Right, that's what I've been thinking about.  For that matter, does
: printf(1) need to use getopt(3) at all?  It seems like simply checkin=
g
: for "--" could be sufficient.  Does POSIX require that it exit with a=
n
: error if it's given any options?  At the very least, it seems like it=

: would be more productive to have printf(1) give unusually-helpful
: error messages (perhaps merely changing its usage output to match tha=
t
: synopsis) if it encounters a string beginning with '-' other than
: "--".

	if (getenv("POSIX_ME_HARDER") && arg[0] =3D=3D '-' && arg[1] !=3D '-')=

		errx(1, "Strict posix compliance says you lose.");

might be all that's needed.

Warner