On Fri, Mar 2, 2012 at 7:29 PM, Norbert Lindenberg
<[email protected]> wrote:
> "NOTE It is recommended that implementations use the time zone information of 
> the IANA Time Zone Database."

I don't suppose there is any desire to embed the Olson / now IANA
information, ala JRE, into engines rather than relying on the OS?

In my Spidermonkey embedding case, I removed all engine interaction
with the OS as far as this is concerned (prmjtime) and have a
standalone, portable IANA tzdata implementation that sits alongside
the engine. It is the only way I could guarantee rock solid JS Date
DST information across 4 different OSes (and different patch levels of
those OSes) in a situation where I control the app, but not the OS.

The browser world is a different story, but I could see the usefulness
in having the default be use of internal engine IANA data (automatic
browser updates take care of you) with an option to fall back on OS
provided facilities if the browser has automatic updates disabled.

-Andrew
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