[tex-live] texlive/metapost btex ... etex bug

[Dan Luecking]

On Mon, May 6, 2013, at 8:31:09 CEST Dare Afolabi wrote:

>prologues:=3;
>outputtemplate:="%j-%2d.mps";
>input TEX;
>TEXPRE("%&latex" & char(10) & "\documentclass{article}\begin{document}");
>TEXPOST("\end{document}");
>beginfig(1);
>label.bot(btex $A$ etex, (60,50));
>endfig;
>end

You loaded TEX.mp, but don't make any use of the macro TEX
that it defines. It is this macro that makes use of TEXPRE
and TEXPOST. If you don't use TEX(...), these strings
never make it into the .tex file that is processed.
Try using
   label.bot(TEX("$A$"), (60,50));
or use verbatimtex instead of TEXPRE.

On the other hand, perhaps you were thinking of the
environmental variable MPTEXPRE, whose value would be a
filename. If that variable is defined, the contents of that
file would be prepended to the .tex file for processing, as
if it were a verbatimtex block.

Dan


Daniel H. Luecking
Department of Mathematical Sciences
Fayetteville, Arkansas
http://www-cs-faculty.stanford.edu/~knuth/iaq.html