windows_tz.py missing valid zones

[Dr. Drinovac]

Although the windows_tz.py file is automatically generated from your script, the windowsZones.xml file it is generated from is missing some valid time zones.

For example, it does not contain Asia/Ho_Chi_Minh: SE Asia Standard Time or Europe/Kyiv: FLE Standard Time, which has caused issues for users attempting to use one of my projects.

Would it be possible to modify the script to have it, at the end, add any "custom" mappings that we identify to be missing in the windowsZones.xml file?

Edit: I see that your script does pull down the tzdata from iana. Would you be open to creating a separate list in the windows_tz.py file of just the timezones from the tzdata? This way, when os.environ.get("TZ") returns a value, if said TZ isn't in the tz_win dictionary, look for it in the new list and return if it is valid else return None. As it stands, if the TZ env variable has a valid value and it isn't found in the tz_win dictionary, None is returned.

[Lennart Regebro]

Hmm, this change should be reflected in the Unicode CLDR mappings, but that hasn't happened.

I made a PR, lets see if that helps. https://unicode-org.atlassian.net/browse/CLDR-17135

[Dr. Drinovac]

Thanks!

[Lennart Regebro]

5.1 released