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From: Hans Hagen <pragma@wxs.nl>
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Subject: Re: "Unable to make mpx file"
Date: Mon, 08 Jul 2002 09:46:58 +0200
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At 12:04 PM 7/7/2002 +0200, you wrote:
>Greetings,
>
>again, I am experiencing problems with MetaPost creating files with text
>included.
>
>The following is the contents of test-mpgraph.log after processing a file
>calles test.tex:
>
>This is MetaPost, Version 0.641 (Web2C 7.3.3.1) (mem=metafun 
>2002.4.10)  10 APR 2002 22:25
>**test-mpgraph
>(test-mpgraph.mp
>{randomseed:=525}
>write0 = `test-mpgraph.mpo'.
>
>
> >> test-mpgraph.mp
> >> test-mpgraph.mpx
>! Unable to make mpx file.
>l.90 label(btex
>                 Hallo wereld etex
>The two files given above are one of your source files
>and an auxiliary file I need to read to find out what your
>btex..etex blocks mean. If you don't know why I had trouble,
>try running it manually through MPto -tex, TeX, and DVItoMP.
>
>This is what the source looks like:
>
>\setupoutput[pdftex]
>\mainlanguage[de]
>\useencoding[win]
>
>\runMPgraphicstrue
>%\protectbufferstrue

so you have enabled write 18 in texmf.cnf

>%  Hack, um " nicht als active character zu definieren,
>%  während Metapost bearbeitet wird
>\appendtoks \let\handlecompoundcharacter\string \to \everyMPgraphic
>
>\setupbodyfont
>   [sansserif, 18pt]
>
>\startMPinclusions
>verbatimtex
>\newif\ifloadfontfileonce
>etex
>\stopMPinclusions

hm, is that one still needed?

>\starttext
>
>\startuseMPgraphic{beispiel}
>label(btex Hallo wereld etex, origin);
>\stopuseMPgraphic
>
>\useMPgraphic{beispiel}
>
>\stoptext
>
>What could be the reason?

This kind of things is hard to trace from a distance. The problem is that 
mp needs those conversion programs (although i'm thinking of replacing mp 
to tex i.e. handle it in texexec since it seems to fail occasionally).

Can you try

texexec --automp yourfile

this does a 'run in between job' instead of realtime.

Hans

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