Ibuffer

Description:

Ibuffer is great, but it has tons of keys that are difficult to remember.

This hydra mostly helps with keeping all those keys straight by utilizing nesting hydras.

Hydra(s):

(defhydra hydra-ibuffer-main (:color pink :hint nil)
  "
 ^Navigation^ | ^Mark^        | ^Actions^        | ^View^
-^----------^-+-^----^--------+-^-------^--------+-^----^-------
  _k_:    ʌ   | _m_: mark     | _D_: delete      | _g_: refresh
 _RET_: visit | _u_: unmark   | _S_: save        | _s_: sort
  _j_:    v   | _*_: specific | _a_: all actions | _/_: filter
-^----------^-+-^----^--------+-^-------^--------+-^----^-------
"
  ("j" ibuffer-forward-line)
  ("RET" ibuffer-visit-buffer :color blue)
  ("k" ibuffer-backward-line)

  ("m" ibuffer-mark-forward)
  ("u" ibuffer-unmark-forward)
  ("*" hydra-ibuffer-mark/body :color blue)

  ("D" ibuffer-do-delete)
  ("S" ibuffer-do-save)
  ("a" hydra-ibuffer-action/body :color blue)

  ("g" ibuffer-update)
  ("s" hydra-ibuffer-sort/body :color blue)
  ("/" hydra-ibuffer-filter/body :color blue)

  ("o" ibuffer-visit-buffer-other-window "other window" :color blue)
  ("q" quit-window "quit ibuffer" :color blue)
  ("." nil "toggle hydra" :color blue))

(defhydra hydra-ibuffer-mark (:color teal :columns 5
                              :after-exit (hydra-ibuffer-main/body))
  "Mark"
  ("*" ibuffer-unmark-all "unmark all")
  ("M" ibuffer-mark-by-mode "mode")
  ("m" ibuffer-mark-modified-buffers "modified")
  ("u" ibuffer-mark-unsaved-buffers "unsaved")
  ("s" ibuffer-mark-special-buffers "special")
  ("r" ibuffer-mark-read-only-buffers "read-only")
  ("/" ibuffer-mark-dired-buffers "dired")
  ("e" ibuffer-mark-dissociated-buffers "dissociated")
  ("h" ibuffer-mark-help-buffers "help")
  ("z" ibuffer-mark-compressed-file-buffers "compressed")
  ("b" hydra-ibuffer-main/body "back" :color blue))

(defhydra hydra-ibuffer-action (:color teal :columns 4
                                :after-exit
                                (if (eq major-mode 'ibuffer-mode)
                                    (hydra-ibuffer-main/body)))
  "Action"
  ("A" ibuffer-do-view "view")
  ("E" ibuffer-do-eval "eval")
  ("F" ibuffer-do-shell-command-file "shell-command-file")
  ("I" ibuffer-do-query-replace-regexp "query-replace-regexp")
  ("H" ibuffer-do-view-other-frame "view-other-frame")
  ("N" ibuffer-do-shell-command-pipe-replace "shell-cmd-pipe-replace")
  ("M" ibuffer-do-toggle-modified "toggle-modified")
  ("O" ibuffer-do-occur "occur")
  ("P" ibuffer-do-print "print")
  ("Q" ibuffer-do-query-replace "query-replace")
  ("R" ibuffer-do-rename-uniquely "rename-uniquely")
  ("T" ibuffer-do-toggle-read-only "toggle-read-only")
  ("U" ibuffer-do-replace-regexp "replace-regexp")
  ("V" ibuffer-do-revert "revert")
  ("W" ibuffer-do-view-and-eval "view-and-eval")
  ("X" ibuffer-do-shell-command-pipe "shell-command-pipe")
  ("b" nil "back"))

(defhydra hydra-ibuffer-sort (:color amaranth :columns 3)
  "Sort"
  ("i" ibuffer-invert-sorting "invert")
  ("a" ibuffer-do-sort-by-alphabetic "alphabetic")
  ("v" ibuffer-do-sort-by-recency "recently used")
  ("s" ibuffer-do-sort-by-size "size")
  ("f" ibuffer-do-sort-by-filename/process "filename")
  ("m" ibuffer-do-sort-by-major-mode "mode")
  ("b" hydra-ibuffer-main/body "back" :color blue))

(defhydra hydra-ibuffer-filter (:color amaranth :columns 4)
  "Filter"
  ("m" ibuffer-filter-by-used-mode "mode")
  ("M" ibuffer-filter-by-derived-mode "derived mode")
  ("n" ibuffer-filter-by-name "name")
  ("c" ibuffer-filter-by-content "content")
  ("e" ibuffer-filter-by-predicate "predicate")
  ("f" ibuffer-filter-by-filename "filename")
  (">" ibuffer-filter-by-size-gt "size")
  ("<" ibuffer-filter-by-size-lt "size")
  ("/" ibuffer-filter-disable "disable")
  ("b" hydra-ibuffer-main/body "back" :color blue))

Key binding:

(define-key ibuffer-mode-map "." 'hydra-ibuffer-main/body)

Optional:

Automatically open the hydra with Ibuffer.

(add-hook 'ibuffer-hook #'hydra-ibuffer-main/body)

Extension to above

(defhydra hydra-ibuffer-main (:color pink :hint nil)
  "
^Mark^         ^Actions^         ^View^          ^Select^              ^Navigation^
_m_: mark      _D_: delete       _g_: refresh    _q_: quit             _k_:   ↑    _h_
_u_: unmark    _s_: save marked  _S_: sort       _TAB_: toggle         _RET_: visit
_*_: specific  _a_: all actions  _/_: filter     _o_: other window     _j_:   ↓    _l_
_t_: toggle    _._: toggle hydra _H_: help       C-o other win no-select
"
  ("m" ibuffer-mark-forward)
  ("u" ibuffer-unmark-forward)
  ("*" hydra-ibuffer-mark/body :color blue)
  ("t" ibuffer-toggle-marks)

  ("D" ibuffer-do-delete)
  ("s" ibuffer-do-save)
  ("a" hydra-ibuffer-action/body :color blue)

  ("g" ibuffer-update)
  ("S" hydra-ibuffer-sort/body :color blue)
  ("/" hydra-ibuffer-filter/body :color blue)
  ("H" describe-mode :color blue)

  ("h" ibuffer-backward-filter-group)
  ("k" ibuffer-backward-line)
  ("l" ibuffer-forward-filter-group)
  ("j" ibuffer-forward-line)
  ("RET" ibuffer-visit-buffer :color blue)

  ("TAB" ibuffer-toggle-filter-group)

  ("o" ibuffer-visit-buffer-other-window :color blue)
  ("q" quit-window :color blue)
  ("." nil :color blue))