bug#41099: 28.0.50; TRAMP process-file ignores exit status of remote process

[Philipp Stephani <p.stephani2@gmail.com>]

Am Mi., 6. Mai 2020 um 12:38 Uhr schrieb Philipp Stephani
<p.stephani2@gmail.com>:
>
> Am Mi., 6. Mai 2020 um 10:38 Uhr schrieb Michael Albinus
> <michael.albinus@gmx.de>:
> >
> > Michael Albinus <michael.albinus@gmx.de> writes:
> >
> > Hi Philipp,
> >
> > >> It looks like `tramp-send-command-and-check' should not just search
> > >> for the exit code, but also return it.
> > >
> > > No, most use cases a simple nil or t is appropriate. Otherwise, you would
> > > need to check always (zerop (tramp-send-command-and-check ...)). But in
> > > tramp-sh-handle-process-file, it shall return the exit code (indicated
> > > by an optional argument).
> > >
> > > Same for tramp-adb-send-command-and-check, called in tramp-adb-handle-process-file.
> >
> > I've fixed this in master, could you pls check?
>
> Looks like it's working fine, thanks for the quick fix!

As a second step, consider also translating signals: if the exit code
is > 128, subtract 128 and return an appropriate string, like
call-process does.