recentf-menu-filter

recentf-menu-filter is a variable defined in `recentf.el'.
Its value is

nil

Documentation:
Function used to filter files displayed in the recentf menu.
A nil value means no filter. The following functions are predefined:

- `recentf-sort-ascending'
Sort menu items in ascending order.
- `recentf-sort-descending'
Sort menu items in descending order.
- `recentf-sort-basenames-ascending'
Sort menu items by filenames sans directory in ascending order.
- `recentf-sort-basenames-descending'
Sort menu items by filenames sans directory in descending order.
- `recentf-sort-directories-ascending'
Sort menu items by directories in ascending order.
- `recentf-sort-directories-descending'
Sort menu items by directories in descending order.
- `recentf-show-basenames'
Show filenames sans directory in menu items.
- `recentf-show-basenames-ascending'
Show filenames sans directory in ascending order.
- `recentf-show-basenames-descending'
Show filenames sans directory in descending order.
- `recentf-relative-filter'
Show filenames relative to `default-directory'.
- `recentf-arrange-by-rule'
Show sub-menus following user defined rules.
- `recentf-arrange-by-mode'
Show a sub-menu for each major mode.
- `recentf-arrange-by-dir'
Show a sub-menu for each directory.
- `recentf-filter-changer'
Manage a menu of filters.

The filter function is called with one argument, the list of menu
elements used to build the menu and must return a new list of menu
elements (see `recentf-make-menu-element' for menu element form).

You can customize this variable.