Variable: recentf-exclude
recentf-exclude is a customizable variable defined in recentf.el.gz.
Value
("/git-rebase-todo\\'"
"/\\(\\(\\(COMMIT\\|NOTES\\|PULLREQ\\|MERGEREQ\\|TAG\\)_EDIT\\|MERGE_\\|\\)MSG\\|\\(BRANCH\\|EDIT\\)_DESCRIPTION\\)\\'")
Documentation
List of regexps and predicates for filenames excluded from the recent list.
When a filename matches any of the regexps or satisfies any of the predicates it is excluded from the recent list. A predicate is a function that is passed a filename to check and that must return non-nil to exclude it.
Source Code
;; Defined in /usr/src/emacs/lisp/recentf.el.gz
(defcustom recentf-exclude nil
"List of regexps and predicates for filenames excluded from the recent list.
When a filename matches any of the regexps or satisfies any of the
predicates it is excluded from the recent list.
A predicate is a function that is passed a filename to check and that
must return non-nil to exclude it."
:group 'recentf
:type '(repeat (choice regexp function)))