bug#55733: 29.0.50; handwrite.el does not utilize 'ps-printer-name' nor 'ps-lpr-switches'.

[Eli Zaretskii]

> Cc: 55733@debbugs.gnu.org
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Tue, 31 May 2022 13:28:23 +0200
> 
> Antonio Ruiz <antonioruiz.math@gmail.com> writes:
> 
> > Hello. The current implementation of the 'handwrite' function does not
> > pass 'ps-printer-name' nor 'ps-lpr-switches' to 'call-process-region'.
> > Moreover, 'ps-lpr-switches' can have dynamic arguments which compute the
> > switches at runtime. Therefore, I propose that we replace the current
> > printing facility in 'handwrite' with that from the 'ps-do-despool'
> > function of ps-print.el. I have copied the patch below:
> 
> Thanks; pushed to Emacs 29.

That change removed binding of coding-system-for-write; I wonder why.
Can't it cause trouble?