Variable: message-forward-ignored-headers
message-forward-ignored-headers is a customizable variable defined in
message.el.gz.
Value
"^Content-Transfer-Encoding:\\|^X-Gnus"
Documentation
All headers that match this regexp will be deleted when forwarding a message.
Also see message-forward-included-headers -- both variables are applied.
In addition, see message-forward-included-mime-headers.
This may also be a list of regexps.
This variable was added, or its default value changed, in Emacs 21.1.
Probably introduced at or before Emacs version 28.1.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-forward-ignored-headers "^Content-Transfer-Encoding:\\|^X-Gnus"
"All headers that match this regexp will be deleted when forwarding a message.
Also see `message-forward-included-headers' -- both variables are applied.
In addition, see `message-forward-included-mime-headers'.
This may also be a list of regexps."
:version "21.1"
:group 'message-forwarding
:type '(repeat :value-to-internal (lambda (widget value)
(custom-split-regexp-maybe value))
:match (lambda (widget value)
(or (stringp value)
(widget-editable-list-match widget value)))
regexp))