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;;; bandali-ibuffer.el --- bandali's Ibuffer setup   -*- lexical-binding: t; -*-

;; Copyright (C) 2018-2020  Amin Bandali

;; Author: Amin Bandali <bandali@gnu.org>
;; Keywords: tools

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; My Ibuffer setup.

;;; Code:

(use-package ibuffer
  :bind
  (("C-x C-b" . ibuffer)
   :map ibuffer-mode-map
   ("P"   . ibuffer-backward-filter-group)
   ("N"   . ibuffer-forward-filter-group)
   ("M-p" . ibuffer-do-print)
   ("M-n" . ibuffer-do-shell-command-pipe-replace))
  :config
  ;; Use human readable Size column instead of original one
  (define-ibuffer-column size-h
    (:name "Size" :inline t)
    (cond
     ((> (buffer-size) 1000000) (format "%7.1fM" (/ (buffer-size) 1000000.0)))
     ((> (buffer-size) 100000) (format "%7.0fk" (/ (buffer-size) 1000.0)))
     ((> (buffer-size) 1000) (format "%7.1fk" (/ (buffer-size) 1000.0)))
     (t (format "%8d" (buffer-size)))))
  (declare-function ibuffer-switch-to-saved-filter-groups "ibuf-ext"
                    (name))
  :custom
  (ibuffer-saved-filter-groups
   '(("default"
      ("dired" (mode . dired-mode))
      ("org"   (mode . org-mode))
      ("gnus"
       (or
        (mode . gnus-group-mode)
        (mode . gnus-summary-mode)
        (mode . gnus-article-mode)
        ;; not really, but...
        (mode . message-mode)))
      ("web"
       (or
        ;; (mode . web-mode)
        (mode . mhtml-mode)
        (mode . css-mode)
        (mode . scss-mode)
        (mode . js2-mode)))
      ("shell"
       (or
        (mode . eshell-mode)
        (mode . shell-mode)
        (mode . term-mode)))
      ("programming"
       (or
        (mode . python-mode)
        (mode . c-mode)
        (mode . c++-mode)
        (mode . java-mode)
        (mode . emacs-lisp-mode)
        (mode . scheme-mode)
        (mode . haskell-mode)
        (mode . lean-mode)
        ;; (mode . go-mode)
        (mode . alloy-mode)))
      ("tex"
       (or
        (mode . bibtex-mode)
        (mode . latex-mode)))
      ("emacs"
       (or
        (name . "^\\*scratch\\*$")
        (name . "^\\*Messages\\*$")))
      ("exwm" (mode . exwm-mode))
      ("erc" (mode . erc-mode)))))
  (ibuffer-formats
   '((mark modified read-only locked " "
           (name 72 72 :left :elide)
           " "
           (size-h 9 -1 :right)
           " "
           (mode 16 16 :left :elide)
           " " filename-and-process)
     (mark " "
           (name 16 -1)
           " " filename)))
  :hook (ibuffer . (lambda () (ibuffer-switch-to-saved-filter-groups "default"))))

(provide 'bandali-ibuffer)
;;; bandali-ibuffer.el ends here