Variable: gnus-duplicate-list-length
gnus-duplicate-list-length is a customizable variable defined in
gnus-dup.el.gz.
Value
10000
Documentation
The maximum number of duplicate Message-IDs to keep track of.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus-dup.el.gz
(defcustom gnus-duplicate-list-length 10000
"The maximum number of duplicate Message-IDs to keep track of."
:type 'integer)