Question on id stability

[Garrett Wollman]

<<On Mon, 03 Jan 2005 14:24:48 -0800, Paul Eggert <eggert at CS.UCLA.EDU> said:

> Only if somebody builds the database without the "backwards" file,
> which lists the backwards-compatibility names.  The default is to
> include "backwards", as it includes very common IDs like US/Pacific.
> I'd be surprised (but not astonished) if someone omitted it.

FreeBSD does not use "backwards":

----------------------------
revision 1.6
date: 1994/09/13 21:54:06;  author: wollman;  state: Exp;  lines: +36 -133
New method for installing timezone data files, not nearly as complicated
as the previous one, and better integrated with the build scheme.

Define OLDTIMEZONES to get backward-compatibility links added.
Define LEAPSECONDS if you want leap-second support.
=============================================================================

This change was made prior to the release of FreeBSD 2.0.  FreeBSD 1.x
(long obsolete) did support the old names.  (I don't recall whether it
supported the new names, but I suspect it didn't.)

-GAWollman