Variable: message-header-use-obsolete-in-reply-to

message-header-use-obsolete-in-reply-to is a customizable variable defined in message.el.gz.

Value

nil

Documentation

Include extra information in the In-Reply-To header.

This form has been obsolete since RFC 2822.

This variable was added, or its default value changed, in Emacs 31.1.

Probably introduced at or before Emacs version 31.1.

Source Code

;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-header-use-obsolete-in-reply-to nil
  "Include extra information in the In-Reply-To header.
This form has been obsolete since RFC 2822."
  :group 'message-headers
  :version "31.1"
  :type 'boolean)