Variable: message-mail-alias-type
message-mail-alias-type is a customizable variable defined in
message.el.gz.
Value
abbrev
Documentation
What alias expansion type to use in Message buffers.
The default is abbrev, which uses mailabbrev. ecomplete uses
an electric completion mode. nil switches mail aliases off.
This can also be a list of values.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-mail-alias-type 'abbrev
"What alias expansion type to use in Message buffers.
The default is `abbrev', which uses mailabbrev. `ecomplete' uses
an electric completion mode. nil switches mail aliases off.
This can also be a list of values."
:group 'message
:link '(custom-manual "(message)Mail Aliases")
:type '(choice (const :tag "Use Mailabbrev" abbrev)
(const :tag "Use ecomplete" ecomplete)
(set (const :tag "Use Mailabbrev" abbrev)
(const :tag "Use ecomplete" ecomplete))))