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

On 3/14/2019 8:51 AM, luigi scarso wrote:

On Thu, Mar 14, 2019 at 5:56 AM Henri Menke mailto:henrimenke@gmail.com> 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).

MWE is below, as always.

Cheers, Henri

---

\directlua{ local mpkpse = kpse.new(arg[0], "mpost")

local function finder(name, mode, ftype)     if mode == "w" then         return name     else         return mpkpse:find_file(name,ftype)     end end

local mpx = mplib.new {     find_file = finder } local ret = mpx:execute[[ boolean mplib ; mplib := true ; input metafun.mp http://metafun.mp ; ]]

print(ret.log) } \bye

in mp-mlib.mpiv it seems that we should have string  LUATEXFUNCTIONALITY ; LUATEXFUNCTIONALITY := runscript("mp.print(LUATEXFUNCTIONALITY)") ; instead of numeric LUATEXFUNCTIONALITY ; LUATEXFUNCTIONALITY := runscript("mp.print(LUATEXFUNCTIONALITY)") ; Now I have tex/texmf-context/metapost/context/base/mpiv$ grep -r LUATEXFUNCTIONALITY mp-mlib.mpiv:%numeric LUATEXFUNCTIONALITY ; LUATEXFUNCTIONALITY := runscript("mp.print(LUATEXFUNCTIONALITY)") ; mp-mlib.mpiv:string  LUATEXFUNCTIONALITY ; LUATEXFUNCTIONALITY := runscript("mp.print(LUATEXFUNCTIONALITY)") ;

and your example looks ok.

as currently the variable is isn't used we can also comment it Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------