Variable: message-cite-prefix-regexp
message-cite-prefix-regexp is a customizable variable defined in
message.el.gz.
Value
"\\([ ]*\\([[:word:]]\\|[_.]\\)+>+\\|[ ]*[>|]\\)+"
Documentation
Regexp matching the longest possible citation prefix on a line.
This variable was added, or its default value changed, in Emacs 24.1.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-cite-prefix-regexp mail-citation-prefix-regexp
"Regexp matching the longest possible citation prefix on a line."
:version "24.1"
:group 'message-insertion
:link '(custom-manual "(message)Insertion Variables")
:type 'regexp
:set (lambda (symbol value)
(prog1
(custom-set-default symbol value)
(if (boundp 'gnus-message-cite-prefix-regexp)
(setq gnus-message-cite-prefix-regexp
(concat "^\\(?:" value "\\)"))))))