bug#7786: 23.2; Encoding of PostScript files

[Eli Zaretskii]

> From: Peter Dyballa <Peter_Dyballa@Freenet.DE>
> Date: Mon, 18 Oct 2021 17:51:47 +0200
> Cc: Lars Ingebrigtsen <larsi@gnus.org>,
>  7786@debbugs.gnu.org
> 
> 
> > Am 18.10.2021 um 14:25 schrieb Eli Zaretskii <eliz@gnu.org>:
> > 
> > And what a2ps produces prints correctly on a PS printer?
> 
> Yes. The output was correct on Epson EPL-5800 PS (PostScript 3) and HP 
> LaserJet 2100 TN.

Then maybe we should simply use Latin-1.  AFAIR, that's what
ps-mule.el is doing.

> I was not aware of an error 0x60 vs. 0x2018, i.e. ` vs. ‘. Which file is 
> faulty? (Grep does not show a reasonable result, finds only comments.)

It's the only difference between Latin-1 and that special encoding of
PS files, according to Wikipedia.