[Dev-luatex] tex.currentgrouplevel

Hans Hagen pragma at wxs.nl
Fri Aug 22 11:49:32 CEST 2008


Jonathan Sauer wrote:
> Hello, 
> 
>> What one would need is something like a unique group _id_, and a means
>> to check whether a certain group id is dead (the group has ended) or
>> not.  Something like that.
> 
> Maybe a callback could be created:
> 
> 	function group_callback(type, where)

in that case a more advanced approach is needed

- just two callbacks (open_group and close_group), i.e. no need for a 
type (which would involve a test for each call, and groups occur many 
times)

- information about what kind of group (explicit, implicit, math, 
alignments, etc)

Such an extension probably has to wait till fundamental steps in the 
roadmap are done (like the upcoming math subproject).

Hans


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