[Dev-luatex] Can \directlua be nested?
Hans Hagen
pragma at wxs.nl
Fri Feb 1 10:52:00 CET 2008
Taco Hoekwater wrote:
>
> Jonathan Sauer wrote:
>> Hello
>>
>>> My assumption was that everything is catcode 11 or 12 or some other
>>> harmless value. \directlua does indeed read the entire braced
>>> argument at once.
>> Thanks for your reply. When coming home yesterday, I experimented
>> a little bit, and the results do not seem to match your answer.
>> In Plain TeX:
>>
>> \directlua0{%
>> tex.sprint('A')%
>> \directlua0{tex.sprint('B')}%
>> tex.sprint('C')%
>> }
>>
>> This results in "LuaTeX error [string "luas[0]"]:1: attempt to index
>> global 'Btex' (a nil value)".
>
>
> Yes, that's what I meant to say (you input is invalid). We have a
> bit of a communication error, I'm afraid. Do it like this:
>
>
> \let\\\relax
> \directlua0{%
> tex.sprint('A')%
> tex.sprint('\\directlua0{B}')}%
> tex.sprint('C')%
> }
i suppose that you meant ...
\directlua0{%
tex.sprint('A')%
tex.sprint('\string\\directlua0{tex.sprint("B")}')%
tex.sprint('C')%
}
> tex.sprint('\\directlua0{B}')}%
^ no
and B needs to be printed to tex (otherwise an lua error)
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Hans Hagen | PRAGMA ADE
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