On Wed, May 25, 2011 at 8:38 AM, Saašha Metsärantala <[log in to unmask]> wrote:
> I wonder what you think about the following suggestion.
> Keeping in mind that EDTF is thought of as
> "both a profile of and extension to ISO 8601"
> according to
> we could skip "reinventing the wheel", define the first EDTF level as a
> profile of ISO 8601 and just add some constraints on ISO 8601 to build the
> first level of EDTF. This could make both the BNF and the coming regexes
> easier to write, just carving away what we do not want have.
> Thereafter, we could have a second level thought of as an extension of the
> first level. Thus, we could use the BNF just to add features to the first
> level. I'm particularly thinking of lists, "x", longYears, seasons and
> temporal expressions. There would not be any "uncertain, approximate,
> unspecified" here. Well, ... "temporal expressions" and seasons may contain
> a kind of approximation, but I suggest to place them in the second level
- where would intervals go?
- not clear why 'x' is here and not below?
> Thereafter, we could have a third level thought of as an extension of the
> second level. Thus, we could use the BNF just to add features to the second
> level. I'm particularly thinking of "?", "~" and "u". There we would
> introduce "uncertain, approximate, unspecified".
> Comments are welcome!