[tz] Getting close to new release: testing, testing, ...

Ian Abbott abbotti at mev.co.uk
Wed Sep 11 14:48:36 UTC 2013

On 2013-09-11 15:41, random832 at fastmail.us wrote:
> On Wed, Sep 11, 2013, at 10:13, Zefram wrote:
>> It does so because it wasn't obvious, at version 2,
>> in what manner future changes to the format would be signalled, nor to
>> what extent they'd maintain compatibility.
> I don't understand this - it seems to me it was very obvious, precisely
> from the extent to which version 2 maintained compatibility with version
> 1 (including an entire redundant copy of everything; being unwilling to
> even do so little as add entries to the existing ttinfo table that are
> not used in the period covered by 32-bit timestamps, instead creating a
> second ttinfo table.)
> It hadn't even occurred to me that any tools would simply reject any
> higher version number, since if that were the case there would be no
> tools that could actually make use of the backwards-compatible
> version-1-format data in a version-2 file.

Even so, it ought to be documented how version-0 parsers and version-2 
parsers are supposed to parse version-N data files.

-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti at mev.co.uk>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-

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