Re: Changes to message-mode and encoding in Emacs26

[Eli Zaretskii]

> From: Alex Bennée <alex.bennee@linaro.org>
> Cc: help-gnu-emacs@gnu.org
> Date: Mon, 02 Oct 2017 18:12:29 +0100
> 
> >>     (when file
> >>       (with-temp-buffer
> >>    (insert-buffer-substring buf)
> >>    (message-clone-locals buf)
> >>    (message-encode-message-body)
> >>
> >> And wondering how that might of changed.
> >
> > Is 'buf' a unibyte buffer or a multibyte buffer?
> 
> buf is the source buffer and yes it will be a multibyte buffer by virtue
> of utf-8 encoding and special characters.

If the text in 'buf' is already encoded, why does the code call
message-encode-message-body -- that would encode an already encoded
message, and could be the root cause of the problem.

> >> Any idea how to examine the current with-temp-buffer while stepping
> >> through in edebug?
> >
> > You can "C-x b" when Emacs is stopped in Edebug.
> 
> The with-temp-buffer doesn't show up on the list until later (where it
> is a duplicate created for the purpose of saving the email)

What list is that?

A temporary buffer's name begins with a space, so you need to specify
its name explicitly when "C-x b" prompts for it, instead of relying on
completion.