emacs/config/ibuffer.org

• IBuffer

IBuffer

Buffer management is a constant irritation with any editor. After having a bit of a performance issue when using bufferlo I've decided to try doing something with emacs's built in IBuffer.

This is heavily inspired, and mostly outright copied from this post by The Emacs Cat.

Icons can make identifying buffers easy at a glance so I think adding them is pretty handy.

(use-package all-the-icons-ibuffer
  :ensure t
  :after (all-the-icons)
  :hook
  (ibuffer-mode . all-the-icons-ibuffer-mode))

Now for the main part of the configuration. This provides a nice logical grouping for buffers. As I use this more I might change the grouping to be a bit less file type oriented, and lean more towards use case.

(use-package ibuffer :ensure nil
  :bind
  (("C-x B" . ibuffer))
  :config
  (setq ibuffer-expert t)
  (setq ibuffer-display-summary nil)
  (setq ibuffer-use-other-window nil)
  (setq ibuffer-show-empty-filter-groups nil)
  (setq ibuffer-default-sorting-mode 'filename/process)
  (setq ibuffer-title-face 'font-lock-doc-face)
  (setq ibuffer-use-header-line t)
  (setq ibuffer-default-shrink-to-minimum-size nil)
  (setq ibuffer-formats
        '((mark modified read-only locked " "
                (name 30 30 :left :elide)
                " "
                (size 9 -1 :right)
                " "
                (mode 16 16 :left :elide)
                " " filename-and-process)
          (mark " "
                (name 16 -1)
                " " filename)))
  (setq ibuffer-saved-filter-groups
        '(("Main"
           ("Directories" (mode . dired-mode))
           ("C++" (or
                   (mode . c++-mode)
                   (mode . c++-ts-mode)
                   (mode . c-mode)
                   (mode . c-ts-mode)
                   (mode . c-or-c++-ts-mode)))
           ("Python" (or
                      (mode . python-ts-mode)
                      (mode . c-mode)
                      (mode . python-mode)))
           ("Build" (or
                     (mode . make-mode)
                     (mode . makefile-gmake-mode)
                     (name . "^Makefile$")
                     (mode . change-log-mode)))
           ("Scripts" (or
                       (mode . shell-script-mode)
                       (mode . shell-mode)
                       (mode . sh-mode)
                       (mode . lua-mode)
                       (mode . bat-mode)))
           ("Config" (or
                      (mode . conf-mode)
                      (mode . conf-toml-mode)
                      (mode . toml-ts-mode)
                      (mode . conf-windows-mode)
                      (name . "^\\.clangd$")
                      (name . "^\\.gitignore$")
                      (name . "^Doxyfile$")
                      (name . "^config\\.toml$")
                      (mode . yaml-mode)))
           ("Web" (or
                   (mode . mhtml-mode)
                   (mode . html-mode)
                   (mode . web-mode)
                   (mode . nxml-mode)))
           ("CSS" (or
                   (mode . css-mode)
                   (mode . sass-mode)))
           ("JS" (or
                  (mode . js-mode)
                  (mode . rjsx-mode)))
           ("Markup" (or
                   (mode . markdown-mode)
                   (mode . adoc-mode)))
           ("Org" (mode . org-mode))
           ("LaTeX" (name . "\.tex$"))
           ("Magit" (or
                     (mode . magit-blame-mode)
                     (mode . magit-cherry-mode)
                     (mode . magit-diff-mode)
                     (mode . magit-log-mode)
                     (mode . magit-process-mode)
                     (mode . magit-status-mode)))
           ("Apps" (or
                    (mode . elfeed-search-mode)
                    (mode . elfeed-show-mode)))
           ("Fundamental" (or
                           (mode . fundamental-mode)
                           (mode . text-mode)))
           ("Emacs" (or
                     (mode . emacs-lisp-mode)
                     (name . "^\\*Help\\*$")
                     (name . "^\\*Custom.*")
                     (name . "^\\*Org Agenda\\*$")
                     (name . "^\\*info\\*$")
                     (name . "^\\*scratch\\*$")
                     (name . "^\\*Backtrace\\*$")
                     (name . "^\\*Messages\\*$"))))))
  :hook
  (ibuffer-mode . (lambda ()
                    (ibuffer-switch-to-saved-filter-groups "Main")))
)