And \ListSort[[abc]]{value} turns out to be worse: doesn't makes it into LuaTeX
at all.
dr. Hans van der Meer
> On 5 Sep 2021, at 10:14, Hans van der Meer via ntg-context
> <ntg-context@ntg.nl> wrote:
>
> There is something I do not understand in the passing of parameters from TeX
> to LuaTex.
> This is my TeX definition:
> \def\ListSort[#1]#2{\directlua{hvdm.listsort([===[#2]===],[===[#1]===])}}
>
> Calling \ListSort[sep={ + }]{} delivers the string 'sep={ + }' into LuaTeX
> as the printout in the logfile shows and as intended.
> However in \ListSort[{ + }]{} the braces have disappeared and transferred is
> nothing more than ' + '.
>
> Why is the transfer messing up the character string I am passing by removing
> the outer braces? Is this a bug or is it an unavoidable consequence of the
> TeX-LuaTeX interface?
>
> dr. Hans van der Meer
>
>
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