Re: Timezone change in US

[Eli Zaretskii <eliz@gnu.org>]

> From: James Cloos <cloos@jhcloos.com>
> Copyright: Copyright 2007 James Cloos
> Date: Tue, 13 Mar 2007 12:48:24 -0400
> Cc: help-gnu-emacs@gnu.org
> 
> 
> Probably a stupid question, but what happens if you set your TZ
> variable to just 'EST5EDT'?  Or 'EST5EDT4,M3.2.0/2:00,M11.1.0/2:00'?
> 
> 02:00 is the default for the time string, so this should be the same
> as what you had:  'EST5EDT4,M3.2.0,M11.1.0'.  Does that work?
> 
> The 4 after EDT is also superfluous.  So each of these may be worth
> a try:
> 
> EST5EDT,M3.2.0/2,M11.1.0/2
> EST5EDT,M3.2.0/2:00,M11.1.0/2:00
> EST5EDT,M3.2.0,M11.1.0

I don't think Windows time routines support the above syntax.
See:

   http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore98/HTML/_crt__tzset.asp

Maybe the problem is precisely that tcsh sets TZ to this form, which
confuses Emacs on Windows.  In that case, running Emacs from without
tcsh should solve the problem.

> I just tried your TZ setting on my linux box, and it did the right
> thing (matching the output of TZ=US/Eastern or TZ=America/New_York
> with a current zoneinfo database).

Note that this Posix syntax of TZ, and the zoneinfo database, are also
not supported by the Windows time routines.

> So this is a win32 or mingw32 specific bug.

Perhaps it is a w32 specific bug, but then why does it work for me?