> On 9 Aug 2021, at 22:05, Aditya Mahajan via ntg-context <ntg-context@ntg.nl>
> wrote:
>
> On Mon, 9 Aug 2021, Hans van der Meer via ntg-context wrote:
>
>> In the TeX to Lua interface with
>>
>> \def\Macro#1{\directlua{luafunction("#1")}}
>>
>> the transfer from TeX to Lua is by string. However what to do at the Lua end
>> when calling \Macro{}?
>> As I understand it, then on the Lua side an empty argument and an empty
>> string are indistinguishable.
>
On the TeX side, these are always indistinguishable (as TeX doesn’t have
’strings’) so depending
on the called macro, you could just assume str == "” actually means nil?
But a clearer example of where you run into trouble would be helpful.
Best wishes,
Taco
—
Taco Hoekwater E: t...@bittext.nl
genderfluid (all pronouns)
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