bug#51832: Piping unicode text in `shell-command'

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: tor.a.s.kringeland@ntnu.no,  51832@debbugs.gnu.org, Alan Third
>  <alan@idiocy.org>
> Date: Sun, 14 Nov 2021 09:18:08 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > It could be useful to replace the pipe with redirection to a file, and
> > see what you get when invoking the command from Emacs and from a shell
> > prompt outside Emacs.
> 
> Good point.  I tried that now (with "| cat > /tmp/" to get a pipe in
> there), and the contents that were written to file were correct utf-8.
> 
> Mysterious.  Could the problem be in pbcopy -- that's assuming something
> about the coding system when run from inside Emacs somehow?  That
> doesn't sound very likely, but...

Maybe we set some locale-related environment variable, and that was
confuses pbcopy when it is run from Emacs?