[tei-council] tricky situations for using @validUntil

[Sebastian Rahtz]

On 11 Dec 2013, at 02:20, Kevin Hawkins <kevin.s.hawkins at ultraslavonic.info> wrote:
> ... do I understand correctly that instead of relying on the build 
> process failing after the date specified in @validUntil to remind us to 
> actually remove something, we would rely on someone using Schematron on 
> some data involving the actual usage, noticing that the date has passed, 
> and reporting to us that we are overdue in actually removing it?  If so, 
> that would be unfortunate.  

i wonder if you’re not looking for a non-existent baby in the bathwater.
Most uses of @validUntil will be on the simple cases which are caught
by existing Schematron tests; when something passes its sell-by date,
the P5 Guidelines build fails in a noticeable way, as will user instances using
the schemas.

If I understand Syd aright (and I am not 100% sure I do), he’s tackling some edge cases
of deprecation.

Sebastian