[metapost] Bug with in-box test alignment

[luigi scarso]

On Wed, Dec 29, 2021 at 7:55 PM Sebastiano Vigna <sebastiano.vigna at unimi.it>
wrote:

>
>
> > On 29 Dec 2021, at 07:42, Sebastiano Vigna <sebastiano.vigna at unimi.it>
> wrote:
> >
> > The following Metapost program
> >
> > outputtemplate := "%j-%c.mps";
> >
> > input boxes
> >
> > beginfig(1);
> >       circleit.n0(btex $0$ etex);
> >       drawboxed(n0)
> > endfig;
> >
> > bye
> >
> >
> > generates a circle with a 0 label inside, but the label is not centered
> (I'm converting the output of Metapost with mptopdf).
> >
> > This behavior started in two different TeX installations after a recent
> upgrade. I'd like to know if this is reproducible elsewhere, or if anyone
> has met already this kind of behavior.
>
> After input from other users, the "not centered" behavior appears to be
> there with TeX 3.141592653, but not with TeX 3.14159265. Can anyone
> reproduce it with that version?
>

here (linux ubuntu) both
pdfTeX 3.14159265-2.6-1.40.21 (TeX Live 2020)
pdfTeX 3.141592653-2.6-1.40.22 (TeX Live 2021)
give the same result.

You can test with
mpost -debug test.mp
that preserves temp. files

-- 
luigi
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