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Date: Tue, 14 Apr 2009 14:11:39 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: gawk strftime '%z' format not reporting correct offset from UTC
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On Mar 24 08:59, Richard Narum wrote:
> >On Mar 23 16:00, Richard Narum wrote:
> >> Package Version Status 
> >> tzcode 2008h-1 OK 
> >> $ date --version 
> >> date (GNU coreutils) 6.10 
> >> $ gawk --version 
> >> GNU Awk 3.1.6 
> >> $ export TZ=America/Chicago 
> >> $ date --date='8 Mar 2009' +'%c %z %Z' 
> >> Sun Mar 8 00:00:00 2009 -0600 CST 
> >> $ date --date='9 Mar 2009' +'%c %z %Z' 
> >> Mon Mar 9 00:00:00 2009 -0500 CDT 
> >> $ gawk 'BEGIN{print strftime("%c %z %Z",mktime("2009 3 8 0 0 0"))}' 
> >> Sun Mar 8 00:00:00 2009 +0000 CST 
> >> $ gawk 'BEGIN{print strftime("%c %z %Z",mktime("2009 3 9 0 0 0"))}' 
> >> Mon Mar 9 00:00:00 2009 +0000 CDT 
> >
> >AFAICS, it's the "modern" style of TZ which isn't handled by the
> >internal time functions.  Unsetting TZ should work, though.  Or set it
> >to TZ=CST-5CDT
> >
> >
> >Corinna
> >
> >-- 
> >Corinna Vinschen                  Please, send mails regarding Cygwin to
> >Cygwin Project Co-Leader          cygwin AT cygwin DOT com
> >Red Hat
> 
> Thanks Corinna, this gets me over my hump.  I've used CST6CDT in the
> past and if I try it now it doesn't work either, only if I add the '+'
> or '-' symbol, i.e. CST+6CDT.  It seems to me that there might still
> be something wrong on my Cygwin side because things aren't consistent
> with Linux.

It took some time but now I tracked this down, finally.  The problem is
a bug in Cygwin's tzset() function.  I fixed that in CVS.  Now TZ="CST6CDT"
as well as TZ="America/Chicago" works as expected.

The patch will be in the next Cygwin 1.7 test release, 1.7.0-46.


Thanks for the report,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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