Variable: message-header-setup-hook
message-header-setup-hook is a customizable variable defined in
message.el.gz.
Value
nil
Documentation
Hook called narrowed to the headers when setting up a message buffer.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-header-setup-hook nil
"Hook called narrowed to the headers when setting up a message buffer."
:group 'message-various
:link '(custom-manual "(message)Various Message Variables")
:type 'hook)