[tz] Why is "AEST" the abbreviation for Australia/Sydney in 1900?

[Florian Weimer]

* Jonathan Wakely via tz:

> And that matches what glibc does: it finds the earliest transition
> with SAVE of zero, and uses that LETTER for the period before the
> first transition.

Do you mean zic instead of glibc?  I don't think we have a .zi parser in
glibc proper.  We mostly bundle zic for historic reasons.

Thanks,
Florian