Re: Anyone want to update our Windows timezone map?

On Tue, Aug 16, 2016 at 11:15 AM, Michael Paquier <michael(dot)paquier(at)gmail(dot)com
> wrote:

> On Tue, Aug 16, 2016 at 9:14 AM, Michael Paquier
> <michael(dot)paquier(at)gmail(dot)com> wrote:
> > On Tue, Aug 16, 2016 at 4:19 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> >> We have certainly not been doing that on a regular basis (as best I can
> >> tell, no such changes have been made since 2010). Does anybody who uses
> >> Windows want to deal with it? Or at least do it once so that our
> Windows
> >> TZ info is less than 5 years out of date?
> >
> > It would be a good idea to refresh that.
> >
> >> If we got this done in the next couple weeks, any resulting changes
> >> could go out in 9.6rc1. Given that we've not done this routinely,
> >> that seems like a better plan than having them first hit the field
> >> in minor releases of stable branches.
> >
> > Agreed. I'll try to give it a shot in the next couple of days at worst.
>
> I ran the script on my Win10 station, and saw the attached output,
> which results in the patch attached once changes are applied. Results
> can be visibly quite different depending on the station used though,
> Win7 reports other things. Still my guess is that we'd want Win10 as a
> base. Note as well that the registry has switched to UTC instead of
> GMT. Thoughts?
>

I think what we want is basically the UNION ALL of all the different active
versions. If we just use the definitions from Win10, we will map
incorrectly on Win7. As long as they are not *conflicting*, we should just
add them all.

The UTC->GMT switch is mostly just annoying as it only hits the comments,
right? I think we just accept that change and do a once-over patch that
changes all those things.

--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/