On 8/3/2018 1:09 AM, Marcel Krüger wrote:
Hello,
I want to suggest extending the tex.saveboxresource interface to accept a hlist
or vlist node as an alternative to a box number as first argument.
Currently creating a boxresource from Lua node list requires saving the list in
a TeX box register, only to delete that register again by tex.saveboxresource.
A direct way to transform a h/vlist into a boxresource would make such code
easier and avoid potential side effects from changing the TeX registers.
An experimental patch with a suggested implementation is attached.
ok, makes sense (but not entirely ok that way but i can fix it)
I also attached a patch implementing a node.scan method which I think would be
another nice addition for LuaTeX: It scans a box with rules similar to
`\setbox0`
and returns the node. This allows passing box-like material to LuaTeX without
requiring box registers.
this is tricky stuff so i need to have a close look at side effects
(it's also more relatex to token scanning so belongs in another namespace)
i'll have a go at it
Hans
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