bug#641: format-time-string %Z does not work, starting with Emacs 22.2

[Lennart Borgman (gmail)]

Juanma Barranquero wrote:
> On Thu, Aug 7, 2008 at 23:04, Lennart Borgman (gmail)
> <lennart.borgman@gmail.com> wrote:
>
> > Is not "+0200" the offset from the UTC standard time zone (or whatever it is
> > called)? Is there 87 such values?
>
> Who's talking about offsets from UTC? We were talking about
> Microsoft's "time zones", i.e., entries in
> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time
> Zones. These contain additional info.

Yes, that is what I am asking about. As martin (and someone more) said 
it could be DST.

To make it clear what I am asking for: Isn't there an official list that 
we could map to, using those variables that are needed?