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I'm trying to use text labels in MetaPost with TeX. The problem is that -tex=... option of MetaPost does not work.

This example works with mpost test.mp:

prologues := 3;

beginfig(1);

label.lrt("e", (0,0));

endfig;

end

This example does not work with mpost -tex=csplain test.mp:

prologues := 3;

beginfig(1);

label.lrt("é", (0,0));

endfig;

end

(csplain is provided by texlive-lang-czechslovak package)

Why -tex=... option of MetaPost does not work?

If you don't want to escape to TeX you have to use a font which has this glyph, e.g. texnansi-lmr10. It is important that the input file is encoded in ISO Latin 1.

prologues := 3;

defaultfont := "texnansi-lmr10";

beginfig(1);

label.lrt("é", (0,0));

endfig;

end

It is probably easier to just typeset the labels with TeX by using (as you showed in the question) mpost -tex=csplain test.mp. In this case the file must be encoded in UTF-8.

prologues := 3;

beginfig(1);

label.lrt(btex é etex, (0,0));

endfig;

end

For more info see chapter 9 “Traditional labels and annotations” of Toby Thurston's excellent “Drawing with MetaPost” (PDF).