On 01/20/2014 08:36 PM, Tom Magliery wrote:
> I wonder how large the union language would be.
I wonder why anyone would want to know this :-)
> I wonder how often the same language has been invented
> inadvertently.
Certainly a few times, for some value of "same". I imagine most of us
who deal with a variety of industries have come across vertical-market
DTDs and schemas that basically represent the same thing with different
names and fractional variations in arrangement.
> What I mean by "same" is that there's some kind of minimal grammar
> that would describe one of these invented instance documents, and it
> just so happened that someone else created an entirely different
> instance document that would be recognized by the same minimal
> grammar.
Not quite that specific, but in the text-document field there isn't a
whole lot of difference between the hierarchy of TEI and the hierarchy
of DocBook. There's a much larger difference between the element types
in the Pool and the Flow, but there are many common ones as well.
The only reason for the possibility of a "minimal grammar" as you
describe it would seem to be the fact that documents of the same type
all tend to have a similar structural grammar, so the argument becomes
circular.
///Peter
