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;;; -*- lexical-binding: t -*-
;; Time-stamp: <2026-07-31 11h44 BST (51019882)>
(use-package ibuffer
:bind (("C-x C-b" . ibuffer))
:hook (ibuffer-mode . (lambda ()
(ibuffer-switch-to-saved-filter-groups "default")))
:config
(setq ibuffer-display-summary nil
ibuffer-saved-filter-groups
'(("default"
("c{,++}" (or (mode . c-mode)
(mode . c++-mode)
(mode . makefile-gmake-mode)))
("config" (or (mode . json-mode)
(mode . jinja2-mode)))
("dired" (mode . dired-mode))
("elisp" (or (mode . emacs-lisp-mode)
(name . "^\\*Backtrace\\*")))
("emacs" (or (name . "^\\*scratch\\*$")
(name . "^\\*Messages\\*$")
(name . "^\\*init log\\*$")
(name . "^\\*Compile-Log\\*$")
(mode . helpful-mode)
(name . "^\\*Help\\*$")))
("magit" (name . "^magit[:-]"))
("python" (or (mode . python-mode)
(mode . python-ts-mode)))
("rust") (or (mode . rust-mode)
(mode . rust-ts-mode))
("REPL" (name . "^\\*.*REPL.*\\*$"))
("shell" (mode . sh-mode)))))
(defadvice ibuffer-update-title-and-summary (after remove-column-titles)
(with-current-buffer "*Ibuffer*"
(read-only-mode -1)
(goto-char 1)
(search-forward "-\n" nil t)
(delete-region 1 (point))
(let ((window-min-height 1))
;; save a little screen estate
(shrink-window-if-larger-than-buffer))
(read-only-mode 1)))
(ad-activate 'ibuffer-update-title-and-summary)
(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)))))
(setq ibuffer-formats
'((mark modified read-only locked " "
(name 18 18 :left :elide)
" "
(size-h 9 -1 :right)
" "
(mode 16 16 :left :elide)
" "
filename-and-process))))
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