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From: Patrick Gundlach <gundlach@irb.cs.uni-dortmund.de>
Newsgroups: gmane.comp.tex.context
Subject: metapost not invoked? mpgraph.1 not created
Date: Tue, 20 Feb 2001 15:13:13 +0100
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Hi,

I have tried to use the file with an older context format. There 
it worked :-):

This is pdfeTeX, Version 3.14159-13d-2.1 (Web2C 7.3.1)
entering extended mode
(tmpgraph.tex[/home/gundlach/TeX/texmf/pdftex/pdftex.cfg]

ConTeXt ver: 1999.5.11 fmt: 2001.2.1 int: english mes: english

texexec --interface=en --pdf mprun.tex
texexec --interface=en --mptex mpgraph.mp
only 
\runMPgraphicstrue
enabled

What about this extended mode (pdfetex)? Do I have to switch it
on? How do I switch it on?

Is it possible that it has to do with my context version? I have 
kept the texexec script, disabled my cont-en symbolic link to 
pdfetex, disabled pdfetex and removed my texmf/tex/context 
directory from my tex search path. I have also pointed the (e)fmt 
searchpath to the 'old' context.

Now I've tried  a new and old pdfetex with the old context format. The 
texexec --mptex mpgraph.mp gives an output.

ConTeXt ver: 1999.5.11 fmt: 2001.2.20 

texexec --verbose
             setting : 'MpToTeXExecutable' to 'mpto' for 'all'
               setting : 'MpToTeXExecutable' to 'mpto' for 'tetex'
          used setting : MpToTeXExecutable = mpto

gundlach@sarti:~/TeX/context/mprun$ which mpto
/usr/bin/mpto
gundlach@sarti:~/TeX/context/mprun$ mpto mpgraph.mp
\shipout\hbox{\smash{\hbox{\hbox{% line 3 mpgraph.mp
Hello world}\vrule width1sp}}}
\end{document}

Viele Gruesse,

  Patrick Gundlach