[OS X Emacs] latex + dvips + ps2pdf from Aquamacs

[Roussanka Loukanova]

With José's suggestion for running the command getenv:
M-x getenv
PATH
/usr/bin:/bin:/usr/sbin:/sbin:/usr/texbin:/Library/TeX/texbin:/usr/local/texlive/2020/bin

Ghostscript is located in:
/usr/local/share/ghostscript

I had this problem with ps2pdf when I had ghostscript 9.50. Yesterday, I
downloaded and installed ghostscript 9.53.3, from Dick Koch:

https://pages.uoregon.edu/koch/

But I am still puzzled why ps2pdf is getting reached and running ok in
Terminal.

I always have been installing TexLive from MacTeX:
http://www.tug.org/mactex/

Best Regards,
Roussanka

On Sun, Nov 1, 2020 at 9:26 PM José Miguel Figueroa-O'Farrill <
j.m.figueroa at ed.ac.uk> wrote:

> Hi,
>
> If you just do M-x getenv it will prompt for the variable and then you can
> simply type PATH.  You can then go the *Messages* buffer to read the
> (typically, lengthy) path.
>
> Cheers,
>         José
>
>
> > On 1 Nov 2020, at 20:17, Roussanka Loukanova <rl.stpuu at gmail.com> wrote:
> >
> > Hi,
> >
> > I tried the following, in the *scratch* buffer of Aquamacs, but they do
> not produce anything visible by me in "scratch":
> >
> > (getenv "PATH") ctrl-J
> > getenv "PATH" ctrl-J
> > getenv("PATH")ctrl-J
> >
> > The "man getenv" gives the following syntax:
> > getenv(const char *name);
> >
> > The problem continues from Aquamacs. But ps2pdf runs ok from Terminal.
> >
> > Best Regards,
> > Roussanka
> >
> > On Sun, Nov 1, 2020 at 7:16 PM Ettore Aldrovandi <ealdrov at math.fsu.edu>
> wrote:
> > Hi John,
> >
> > thanks for the clarifications.
> >
> > > On Nov 1, 2020, at 12:44, John Wroclawski <jtw at csail.mit.edu> wrote:
> > >
> > >> On Nov 1, 2020, at 12:30 PM, Ettore Aldrovandi <ealdrov at math.fsu.edu>
> wrote:
> > >>
> > >> what Pete says is correct. (It’s indeed great to see him back on the
> list.) However, if you install TeX Live via MacTex, the installer takes
> care of putting the appropriate item in /etc/paths.d, so that shouldn’t be
> the issue, as you say.
> > >
> > > Without speculating at all on what’s happening to Roussanka, it might
> be worth noting in passing that
> > >
> > > - ps2pdf is part of ghostscript, not TeXLive, and normally lives in
> /usr/local/bin. (so the TeXLive /etc/paths.d file isn’t relevant to this
> particular program..)
> >
> > Yes, you are right. Even better. The path is synthesized by calling
> /usr/libexec/path_helper, which takes care of putting /usr/local/bin in it
> before looking into /etc/paths.d.  This happens in both bash and zsh
> (through different startup files, of course).
> >
> > > - ps2pdf is also typically a chain of three or four shell scripts
> before it gets to actually running gs, and I suppose it could possibly have
> been broken by the switch to zsh (running 10.14 here, can’t check..)
> >
> > Eventually they all call ps2pdfwr, which calls gs. But due to the way
> bash and zsh construct the path, the result should be the same.  Bash would
> call path_helper in /etc/profile. Zsh does the same in /etc/zprofile.
> >
> > > - simpdftex, which Roussanka mentioned in other contexts, _is_ part of
> TeXLive and typically lives in /Library/TeX/texbin/. But it itself
> manipulates paths to find the programs it uses. So the fact that simpdftex
> can find ps2pdf doesn’t necessarily mean that other things will.
> > >
> > > (Is AQM using simpdftex, or calling programs directly?)
> >
> > No idea. I see that Aquamacs adds /Library/TeX/texbin to the path
> itself. I have TeXLive installed in /opt and therefore no
> /Library/TeX/texbin in my path, but it’s there in Aquamacs when I run
> (getenv “PATH”).
> >
> > —Ettore
> >
> >
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> Prof José Figueroa-O'Farrill
> School of Mathematics
> University of Edinburgh
> PGP Key: 0x6A6BD529 (MIT PGP Key Server)
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