Re: [VCARDDAV] Format of various date fields

[Simon Perreault <simon.perreault at viagenie.ca>]

On Wednesday 07 May 2008 22:04:19 Darryl Champagne wrote:
> Again - I do not care which format is selected, but I am trying to point
> out that exactly specified formats would be much easier to deal with in the
> mobile world than nearly freeform text, and also would work better for
> comparison purposes (e.g. if during a Sync I am comparing 1800+-50 years
> from one side, and 1820 from the other, I can reasonable choose the 1820
> value, but I am unlikely to know how to deal with "circa" or "~" or "just
> before", but any user interface that allows circa can easily pick a
> reasonable range).

Here's my 2¢:

- I think that the DATE, TIME, and DATE-TIME value types are *very well 
defined* and that converting to/from them will not be ambiguous at all. Do 
you disagree?

- Resetting a DATE/TIME/DATE-TIME-valued property to freeform text implies 
that any comparison is futile. This is opaque text and you're not supposed to 
interpret it. Just store it as opaque text. If you can't, drop it, and accept 
that you're not implementing vCard fully (for potentially valid reasons like 
lack of storage, etc.)

It would be much harder on the implementation if we would specify a date 
format for expressing uncertainty and precision than just allowing the 
property to be reset to freeform text (which is not supposed to be 
interpreted).
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