(ibuffer-clear-filter-groups): Likewise.
(ibuffer-kill-filter-group): Likewise.
(ibuffer-kill-line): Likewise.
(ibuffer-read-filter-group-name): New function.
(ibuffer-jump-to-filter-group): Use it.
(ibuffer-kill-filter-group): Likewise.
(ibuffer-yank-filter-group): Likewise.
(ibuffer-decompose-filter-group): New function.
`ibuffer-filters-to-filter-group' menu item. Fix :enable guards for
`ibuffer-pop-filter-group' and `ibuffer-clear-filter-groups'.
(toplevel): Specialize `ibuffer-mode-groups-popup' menu items.
`x_alloc_lighter_color_for_widget' is a float, not an int, and it's
a multiplicative factor, so the name `delta' is inaccurate. Always base
disabled foreground on the normal foreground. Don't use the temporary
variable `temp'.
(find_next_selectable): Return current item when the menu is not poped up.
Rename `inactive_gc' to `disabled_gc'.
Use lighter/darker color for disabled menu items instead of using stipple.
Use stipple only when better color can not be determined automatically.
(filesets-open-file-function, filesets-save-buffer-function): Likewise.
(filesets-tree-max-level): Doc fix.
(filesets-commands, filesets-external-viewers)
(filesets-ingroup-patterns): Mark as risky.
(filesets-cache-hostname-flag): Doc fix.
(filesets-menu-cache-file): Doc fix. Mark as risky.
(filesets-menu-before, filesets-menu-path, filesets-menu-in-menu):
Don't defcustom them if running in Emacs.
(ibuffer-mode-view-menu): Unused variables; deleted.
(ibuffer-find-file): Pass wildcard flag to `find-file' correctly.
(ibuffer-mode-groups-popup): New variable.
(toplevel): Bind filter group menu entries in it. Add :enable
forms for some menu items.
(toplevel): Bind [down-mouse-3] in `ibuffer-mode-filter-group-map'
to `ibuffer-mouse-popup-menu'.
(ibuffer-mouse-popup-menu): Test whether or not we're on a filter
group name, and if so, pop up a filter group menu.
Push killed group on `ibuffer-filter-group-kill-ring'.
(ibuffer-kill-line): Document. Don't push killed group ourselves.
(ibuffer-yank-filter-group): Renamed from `ibuffer-yank'.
(ibuffer-insert-filter-group-before): New function, broken out from
`ibuffer-yank'.
(ibuffer-yank): Now just call `ibuffer-yank-filter-group'.
