Variable: message-beginning-of-line
message-beginning-of-line is a customizable variable defined in
message.el.gz.
Value
t
Documentation
Whether C-a (message-beginning-of-line) goes to beginning of header values.
This variable was added, or its default value changed, in Emacs 22.1.
Probably introduced at or before Emacs version 26.1.
Key Bindings
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-beginning-of-line t
"Whether \\<message-mode-map>\\[message-beginning-of-line]\
goes to beginning of header values."
:version "22.1"
:group 'message-buffers
:link '(custom-manual "(message)Movement")
:type 'boolean)