Re: Error: attempt to index a nil value

["Hans Åberg via ntg-context" <ntg-context@ntg.nl>]

> On 13 Oct 2021, at 18:37, Hans Hagen <j.hagen@xs4all.nl> wrote:
> 
> On 10/13/2021 6:01 PM, Hans Åberg via ntg-context wrote:
>> I was suggested a long ago to hack the file
>>  /usr/local/texlive/2021/texmf-dist/tex/generic/context/luatex/luatex-math.tex
>> and use LuaTeX directly, now using Version 1.13.2 (TeX Live 2021), but I get this error:
>> (./luaotfload.sty
>> (/usr/local/texlive/2021/texmf-dist/tex/latex/base/ltluatex.tex))
>> (./luatex-math-modified.tex[\directlua]:1: attempt to index a nil value (global
>> 'arguments')
>> stack traceback:
>> 	[\directlua]:1: in main chunk.
>> l.132     }
>> ? …
>> It is from this segment in the modified luatex-math.tex:
>> \ifdefined\directlua
>>    \directlua {
>>        if arguments["mtx:lucidabright"] then
>>            tex.print("\string\\lucidabright")
>>        else
>>            tex.print("\string\\latinmodern")
>>        end
>>    }
>> \fi
>> Is there a workaround? —I may ditch this setup in favour of using 'context' directly, so it is not so important if there is no fix.
> I have no clue ..

Has not stuff been moved from LuaTeX to ConTeXt? —If so, I thought it might have something with that to do.

> it looks like you load a latex style so I suppose that 'arguments' is no longer defined there (as it worked for you in the past).

It does not contain it; it a copy in the same directory that has never changed.

> Maybe 'arguments' lives in some namespace?
> 
> \directlua {for k, v in pairs(_G) do print(k.v) end}
> 
> This will show you what is in the global namespace, maybe 'arg'?

If I put this code in right before the \ifdefined\directlua it prints a lot of "nil".


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