Ok, will do.

On Sun, May 20, 2018, 17:06 Eli Zaretskii <eliz@gnu.org> wrote:

> > From: joaotavora@gmail.com (João Távora)
> > Date: Sun, 20 May 2018 16:43:59 +0100
> > Cc: Eli Zaretskii <eliz@gnu.org>, monnier@iro.umontreal.ca,
> vibhavp@gmail.com,
> >       emacs-devel@gnu.org
> >
> > > - I think `string-bytes' isn't guaranteed to return the number of
> > > UTF-8 bytes. Rather you should encode the string explicitly to a
> > > unibyte string using `encode-coding-string', and then use
> > > `no-conversion' for the process coding systems.
> > >
> > I think Eli has already answered this authoritatively.
>
> Note that my response did assume you will bind coding-system-for-write
> to utf-8 around the call to process-send-string, because relying on it
> being so by default is asking for trouble.
>