* doc/emacs/rmail.texi: Copyedits. Use 'mail composition buffer' in place
of '*mail*', since Message does not call it that.
(Rmail Reply): Rename rmail-dont-reply-to-names.
\\`info- no longer handled specially.
Update for rmail-enable-mime-composing.
Don't mention 'm' for replies.
Don't mention rmail-mail-new-frame and cancelling, since it does
not work for Message at the moment.
* lisp/mail/rmail.el (rmail-dont-reply-to-names): Mark as obsolete.
* lisp/mail/undigest.el (unforward-rmail-message): Doc fix.
* admin/FOR-RELEASE: Related markup.
* mail/rmail.el (rmail-message-filter, rmail-auto-file): Doc fixes.
(rmail-auto-file): Ignore case in the "special" field names,
as mail-fetch-field does for all others.
* lisp/mail/rmail.el (rmail-enable-mime-composing): Make it a defcustom.
(rmail-insert-mime-forwarded-message-function, rmail-mime-feature):
Doc fixes.
(rmail-decode-mime-charset): Mark as obsolete.
* lisp/mail/rmailsum.el (rmail-message-regexp-p-1):
* lisp/mail/rmail.el (rmail-search-message, rmail-forward, rmail-resend):
Before using mime functions, check they are set.
Fixes: debbugs:10077
* lisp/mail/rmail.el (rmail-file-coding-system): It's only ever used
in a boolean sense, so just make it a boolean, and fix the doc.
(rmail-show-mime-function, rmail-mime-feature)
(rmail-require-mime-maybe): Doc fixes.
(rmail-show-message-1): Check rmail-show-mime-function is non-nil.
* lisp/mail/rmailmm.el (rmail-show-mime): Doc fix.
lisp/simple.el (mail-encode-mml): New defvar.
lisp/mail/rmail.el (mail-encode-mml): Add a defvar.
(rmail-enable-mime-composing): Default to t.
(rmail-forward): Use MIME method of forwarding only if both
rmail-enable-mime-composing and rmail-enable-mime are non-nil.
Set mail-encode-mml non-nil if the MIME method was used.
lisp/mail/sendmail.el (mml-to-mime): Add autoload form.
(mail-encode-mml): Add a defvar.
(mail-mode): Make mail-encode-mml buffer-local and initialize it
to nil.
(mail-send): If mail-encode-mml is non-nil, run the outgoing
message through mml-to-mime, and reset mail-encode-mml to nil.
lisp/mail/rmailmm.el (rmail-mime-insert-tagline): Insert an extra
newline before and after the tag line, so it doesn't interfere
with determining the paragraph direction of bidirectional text.
* window.el (get-lru-window, get-mru-window)
(get-largest-window): Never return a minibuffer window.
(display-buffer-pop-up-window): Fix a bug that could lead to
reusing the minibuffer window.
(display-buffer): Pass original specifier argument to
display-buffer-function instead of the normalized one.
Reported by Thierry Volpiatto <thierry.volpiatto@gmail.com>.
