gnuplot-module broken under lmtx

10 Apr 2019

      Hi

It's little off-topic as there are officially no modules included in lmtx.
But when I used the modules from a mkiv-installation, there was little to
no problem. But with the gnuplot-module I can't fix the error myself.

MWE:
\usemodule[gnuplot]
\startGNUPLOTscript[sin]
   plot sin(x)
\stopGNUPLOTscript

\starttext
\placefigure[here]{Sine Test}{\useGNUPLOTgraphic[sin]}
\stoptext

Under mkiv everything is fine. mkiv creates a file gnuplot-gnuplot-1.plt,
sends this file to gnuplot and uses the output gnuplot-gnuplot-1-ctx.tex.

Under lmtx only the files gnuplot-gnuplot-1.tmp
and gnuplot-gnuplot-inclusions.tmp are created. When I copy the correct
.plt file from a mkiv-run, no gnuplot-gnuplot-1-ctx.tex is generated. If I
copy the correct -ctx.tex file from a mkiv-run, I still get an error.

Relevant part from the logfile of a working mkiv-run:
modules         > 'gnuplot' is loaded
open source     > level 3, order 4, name
'/home/user/context/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.mkiv'
loading         > Gnuplot module
open source     > level 4, order 5, name
'/home/user/context/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv'
close source    > level 4, order 5, name
'/home/user/context/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv'
close source    > level 3, order 5, name
'/home/user/context/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.mkiv'
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern-designsize rm 12pt' is loaded
open source     > level 3, order 6, name 'gnuplot-gnuplot-1-ctx.tex'
close source    > level 3, order 6, name 'gnuplot-gnuplot-1-ctx.tex'
metapost        > initializing instance 'metafun:1' using format 'metafun'
and method 'default'
metapost        > loading 'metafun' as
'/home/user/context/tex/texmf-context/metapost/context/base/mpiv/metafun.mpiv'
using method 'default'
metapost        > initializing number mode 'scaled'
floatblocks     > '1' placed (here)

from a lmtx-run (no .plt-file and -ctx.tex given):

modules         > 'gnuplot' is loaded
open source     > level 3, order 4, name
'/home/user/lmtx/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.mkiv'
loading         > Gnuplot module
open source     > level 4, order 5, name
'/home/user/lmtx/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv'
close source    > level 4, order 5, name
'/home/user/lmtx/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv'
close source    > level 3, order 5, name
'/home/user/lmtx/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.mkiv'
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern-designsize rm 12pt' is loaded
mtxrun          |
mtxrun          | executing: gnuplot gnuplot-gnuplot-1.plt
mtxrun          |
mtxrun          |
/home/user/lmtx/tex/texmf-linux-64/bin/mtxrun.lua:26166: attempt to call a
nil value (field 'exec')
aaa             > mtxrun --direct gnuplot gnuplot-gnuplot-1.plt
floatblocks     > no block given
floatblocks     > '1' placed (here)

lmtx with given .plt and -ctx.tex-file:

modules         > 'gnuplot' is loaded
open source     > level 3, order 4, name
'/home/user/lmtx/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.mkiv'
loading         > Gnuplot module
open source     > level 4, order 5, name
'/home/user/lmtx/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv'
close source    > level 4, order 5, name
'/home/user/lmtx/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv'
close source    > level 3, order 5, name
'/home/user/lmtx/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.mkiv'
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern-designsize rm 12pt' is loaded
mtxrun          |
mtxrun          | executing: gnuplot gnuplot-gnuplot-1.plt
mtxrun          |
mtxrun          |
/home/user/lmtx/tex/texmf-linux-64/bin/mtxrun.lua:26166: attempt to call a
nil value (field 'exec')
aaa             > mtxrun --direct gnuplot gnuplot-gnuplot-1.plt
open source     > level 3, order 6, name 'gnuplot-gnuplot-1-ctx.tex'
close source    > level 3, order 6, name 'gnuplot-gnuplot-1-ctx.tex'
metapost        > initializing instance 'metafun:1' using format 'metafun'
and method 'default'
metapost        > loading 'metafun' as
'/home/user/lmtx/tex/texmf-context/metapost/context/base/mpiv/metafun.mpiv'
using method 'default'
metapost        > initializing number mode 'scaled'
floatblocks     > '1' placed (here)

tex error       > tex error on line 1 in file gnuplot-gnuplot-1-ctx.tex: !
Undefined control sequence

<argument> \GNUPLOTfile
             -ctx.tex
\fourthoffivearguments #1#2#3#4#5->#4

<write> set output "\@@GNUPLOTresult
                             "
<inserted text>
}\endwrite
<argument> \shipoutscratchbox

\page_shipout_box #1->\clf_shipoutpage #1
                                         \relax \global \setbox #1\emptybox
...
...l.8 \stoptext

 1 >>  % Written by ConTeXt terminal for GNUPLOT on: 2019-04-10 16:12 CEST
 2     % GNUPLOT version: 5.0.5, terminal version: 1.0.0 (2011-11-05)
 3     % See also http://wiki.contextgarden.net/Gnuplot
 4     %
 5     \startGNUPLOTgraphic[1]
 6     string gnuplotversion; gnuplotversion := "5.0";
 7     string termversion;    termversion    := "1.0";
 8     % scaling factor, width and height of the figure
 9     a := 1cm; w := 12.700a; h := 7.620a; % (5in, 3in)
10     % temporary variable for storing the path and images
11     save p, img, ima; path p; string img, ima;

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

mtx-context     | fatal error: return code: 256

Sorry, can't help more, as I don't know where the problem is.

Thanks for fixing it in time, when the modules get installed with lmtx.

Christian

Christian Prim

Hans Hagen

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