Re: Replacement for string-as-unibyte-function

[Joe Riel <joer@san.rr.com>]

On Sun, 31 Jan 2021 22:03:42 -0500
Stefan Monnier <monnier@iro.umontreal.ca> wrote:

> > Am handling a message passed in from an external process
> > (its passed in chunks).
> >
> > The header of the message specifies its length, in bytes.
> > Some of the characters may be unicode.   Am using
> > buffer-substring-no-properties to later extract the message.
> > To get its length write, each byte has to be a character in the buffer.  
> 
> So make sure the buffer in which the process writes is unibyte with
> 
>     (set-buffer-multibyte nil)
> 
> and make sure Emacs doesn't try to decode the process's output:
> 
>     (set-process-coding-system <proc> 'binary)
> 
> (which you can also set directly when you launch the process, but how
> you do it depends on the function you use to create the process).

I'm actually using make-network-process (to communicate via tls).  
The filter function inserts the string into a buffer.  
I tried using (set-buffer-multibyte nil) and (insert string), 
but that doesn't work. What does work is omitting the call to 
set-buffer-multibyte and using 

   (insert (encode-coding-string string 'utf-8-unix)).

Previously I used (insert (string-as-unibyte string)).

-- 
Joe Riel