Interleave (was Re: [relax-ng] RELAX NG telcon 25 October 2001)

James Clark wrote:

> 2. Issue 40. Restriction on interleave.  Any further news from Hosoya-san?
> Should we allow <interleave> inside <list>?

Hosoya-san reported that the following patterns are hard although 
they satisfy the restrictions in our draft.

	a, (a & b), b

	(a & b)* 

	(a & (b, c)) | ((a, b) & c)

He is leaning towards some global restrictions, but does not have any 
concrete ideas.

It appears to be difficult to find something better than our (arguably 
insufficient) restrictions in the near future.

Cheers,

Makoto