[NTG-context] Can't use MetaFun with mplib anymore

Hans Hagen j.hagen at xs4all.nl
Thu Mar 14 10:55:47 CET 2019


On 3/14/2019 10:00 AM, Henri Menke wrote:
> On 3/14/19 8:49 PM, Hans Hagen wrote:
>> On 3/14/2019 5:56 AM, Henri Menke wrote:
>>>
>>> Dear list,
>>>
>>> Something has changed in MetaFun and it can no longer be used in plain
>>> LuaTeX,
>>> with neither of
>>>
>>>       luatex test.tex
>>>       mtxrun --script plain test.tex
>>>
>>> This is the error:
>>>
>>>       >> LUATEXFUNCTIONALITY
>>>       >> "mp.print(LUATEXFUNCTIONALITY)"
>>>       ! Equation cannot be performed (numeric=string).
>>
>> hm, that can be
>>
>> mp.print(LUATEXFUNCTIONALITY or 0)
>>
>> but ... i'm surprised you can use metafun in plain at all ... i never
>> test that and to be honest am not too motivated to support mpiv code in
>> generic either .. better use
> 
> Until TeX Live 2018, MetaFun worked in plain (at least the subset I'm
> using).  It would be a shame if the support would end.  I also think
> that there are quite a number of users.  The number of posts on TeX
> Stack Exchange mentioning luamplib with metafun is not negligible.
> https://tex.stackexchange.com/search?q=mplibsetformat

ok, as long as no one expects me to check functionality in plain usage

things like special colors and shading and some font related options 
won't work, so in that case the stand alone graphics are better

(there are quite some metafun macros that assume the lua extensions that 
context provides and some upcoming extra modules, for sure will not work 
in plain ... no problem as long as these macros are not used ...)

> I (and probably a lot of other people) would really appreciate if you
> could apply Luigi's fix, so we can continue do enjoy MetaFun, even
> outside ConTeXt.
i'll comment the line

Hans

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