Re: [PATCH] t9600: require cvsps 2.1 to perform tests

From: Jeff King <peff@peff.net>
Date: Dec 5, 2007, 01:02 UTC
Message-ID: <20071205010202.GA4713@coredump.intra.peff.net>
In-Reply-To: <7vhciy5pg0.fsf@gitster.siamese.dyndns.org>

On Tue, Dec 04, 2007 at 09:39:59AM -0800, Junio C Hamano wrote:

Show 7 quoted lines

> You are right about "we may be depending on what 2.1 has other than
> -A".  Will apply as-is.
> 
> Thanks, both.
> 
> The primary reason I asked about '\[-A\]' was what will happen if
> somebody uses 2.2.

Yes, it would be nice to be able to easily check >2.1. GNU expr seems to handle this ok:

  $ expr 2.2 '>' 2.1
  1
  $ expr 2.0 '>' 2.1
  0

but POSIX seems to mention only integers and string comparison (though if all are of the form "x.y", string comparison works). I have no idea how portable this is.

-Peff