Re: 23.0.50; on Windows, M-x display-time-world shows the same, incorrect, time for all cities

[Jason Rumney]

Eli Zaretskii wrote:
>> Date: Sat, 27 Oct 2007 15:09:11 +0100
>> From: Jason Rumney <address@hidden>
>>     
>> Also, I think enabling the zoneinfo style names only on GNU/Linux and MS
>> DOS is too conservative.
> It strikes me that the best would be to test the support at run time,
> and do TRT accordingly.  If someone knows how to test this, maybe such
> a test should be part of `set-time-zone-rule', and then
> `display-time-world' could use it.
>   

I added such a test to the initialization of display-time-world-list;
comparing the results of setting the timezone to "America/New York" and
"Europe/London". If these both give the same result, then we know that
zoneinfo style is not supported.