It results in the error ! Argument of \\ has an extra }. <inserted text> \par <to be read again> } l.132 } ?

On 13 Oct 2021, at 18:26, Hans van der Meer via ntg-context wrote:

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tex.print("\string\\latinmodern")

should be at least double backslashes: tex.print("\\string\\latinmodern") I would think

met vriendelijke groet dr. Hans van der Meer

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.

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".

On 13 Oct 2021, at 22:34, Hans Hagen wrote:

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)

I think that LaTeX extracted some parts out of ConTeXt for use with LuaTeX only for font loading, and that is why I have it, not remembering the details. I think I saw that LuaTeX a few years had more font loading stuff, but that was moved to ConTeXt, but you show know better, as it would then would have been you did it. :-)

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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

It is line 97-105 in /usr/local/texlive/2021/texmf-dist/tex/generic/context/luatex/luatex-math.tex I have not done anything to that part, just adding some support for the STIX font.

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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

I may have not used it right, just copying it in right above line 97.

On 10/13/2021 7:02 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 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 ..

I made this as experiment to make a texinfo file along with a manual generating a PDF to display math properly, which the Info format cannot do.

I'm not familiar with texinfo but in the context distribution are some luatex-* files that show how to load the generic context font loader (in plain tex). One can make a format with: mtxrun --script plain --make an dprocess a plain file with: mtxrun --script plain foo.tex I suppose that texinfo is close to plain so doable too.

However, it has been decided that the Info format should be extended with HTML, probably HTML5 then. So one might generate that directly with ConTeXt. —This was the reason for the other post. ok

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