Variable: message-elide-ellipsis
message-elide-ellipsis is a customizable variable defined in
message.el.gz.
Value
"\n[...]\n\n"
Documentation
The string which is inserted for elided text.
This is a format-spec string, and you can use %l to say how
many lines were removed, and %c to say how many characters were
removed.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-elide-ellipsis "\n[...]\n\n"
"The string which is inserted for elided text.
This is a `format-spec' string, and you can use %l to say how
many lines were removed, and %c to say how many characters were
removed."
:type 'string
:link '(custom-manual "(message)Various Commands")
:group 'message-various)