[Dev-luatex] nodelist based tex.saveboxresource
Hans Hagen
j.hagen at xs4all.nl
Thu Aug 16 20:19:16 CEST 2018
Hi,
btw, you probably noticed that mlist_to_hlist is called recursively so
you might use that fact
conceptually one could have callbacks at the make_* level (the wrapping
things) which is kind of clean but that has not much use as work happens
in those and duplicating all that happens in there in lua makes no sense
a do_delimiter callback is only a partial solution as it is used in
several places and also works in tandem with other constructs (rules for
instance); also, you'd always have to keep in mind that other mechanisms
expect (for instance) attributes to be retained, character properties to
migrate to unicode (cut and paste), etc, but that can be dealt with, in
that sense the name 'delimiter' is somewhat confusing
(fwfw, in context we hardly use these constructs because we want to have
more control and do fancy things)
anyway, a dodelimiter callback is in some sense not so much a delimiter
one, but more a constructor one as it kind of relates to fonts and not
so much to math ... basically it could be something "create_extensible"
or so which is then triggered inside e.g. do_delimiter
i'll play with that a bit when i have time (i.e. what is the context we
need to pass and what do we want back and what wrapup afterwards is
needed) to see if it makes sense at all
Hans
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Hans Hagen | PRAGMA ADE
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