Re: [NTG-context] Error: attempt to index a nil value

13 Oct 2021

      On 10/13/2021 6:54 PM, Hans Åberg wrote:
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On 13 Oct 2021, at 18:37, Hans Hagen  wrote:
On 10/13/2021 6:01 PM, Hans Åberg via ntg-context wrote:
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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.
luatex is just a tex engine and context is a macro package where context 
mkiv is geared for luatex; the context fontloader has a generic core so 
it can be used in plain and for latex some write a wrapper around that 
font hndler for latex that evolved over years

i have no clue why you get "(./luaotfload.sty ..." but it is not context 
that you run there (and i can't imagine some plain format loading it 
either)
...
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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.
hm, but i have no clue what this "mtx:..." does
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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".
print(k,v) should print two values, key and value

Hans

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