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From: Kevin Ryde <user42@zip.com.au>
Cc: guile-devel@gnu.org, Rob Browning <rlb@defaultvalue.org>
Subject: Re: 1.6.8 release candidate 0 available for testing.
Date: Wed, 19 Oct 2005 11:34:12 +1000	[thread overview]
Message-ID: <87fyqy8f3f.fsf@zip.com.au> (raw)
In-Reply-To: <rmir7aiy539.fsf@fnord.ir.bbn.com> (Greg Troxel's message of "18 Oct 2005 15:53:30 -0400")

Greg Troxel <gdt@ir.bbn.com> writes:
>
> I didn't find C99 specs for strftime, so I don't know if programs are
> required to set tm_zone before calling strftime.

The bit about %Z is

         %Z  is   replaced  by  the  locale's  time  zone  name  or
             abbreviation, or by no characters if no time  zone  is
             determinable.  [tm_isdst]

which I suppose is because struct tm is speced without tm_zone.

> So, I respectfully suggest that the test is demanding more than one
> can rightfully conclude from the documentation.

You'd think a system with tm_zone should use it, but yes no sense
demanding what doesn't work.

> Perhaps libguile/strftime.c needs to not assume that strftime(3) will examine
> fields not specified by the standard, or perhaps that Scheme strftime
> should define what it does more precisely.  A problem here is that
> guile uses a structure which is bigger than C89 says.

Since we initialize tm_zone if it exists we should be safe, but a note
in the docs about what guile tm:zone might or might not do could be in
order.


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  parent reply	other threads:[~2005-10-19  1:34 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-15 20:55 1.6.8 release candidate 0 available for testing Rob Browning
2005-10-16 21:02 ` Greg Troxel
2005-10-16 22:38   ` Kevin Ryde
2005-10-18 19:53     ` Greg Troxel
2005-10-19  1:27       ` Kevin Ryde
2005-10-19 17:10         ` Greg Troxel
2005-10-20  7:32           ` Ludovic Courtès
2005-10-19  1:34       ` Kevin Ryde [this message]
2005-10-19 17:18         ` Greg Troxel
2005-10-23 22:27           ` Kevin Ryde
2005-10-25  1:29             ` Greg Troxel
2005-10-31 23:41               ` Kevin Ryde
2005-10-23 22:41       ` Kevin Ryde

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