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Evil

Transform Emacs into Vim.

Config

Emacs has some strange default keybindings, which given the age of the project, is not surprising. To overcome this nearly show-stopping hurdle, we transform Emacs into Vim with evil1, the Extensible VI Layer for Emacs.

(use-package evil
  :custom (evil-want-integration t)  ;; Required for `evil-collection'.
          (evil-want-keybinding nil) ;; Same as above
  :config (evil-mode +1))

Improvements

While covering substantial ground towards the goal, the default keybindings implemented in evil1 alone are lacking compared to what you would expect from Vim. There's a community curated package evil-collection2 that does a much better job implementing the proper keybindings.

(use-package evil-collection
  :after evil
  :config (evil-collection-init))

Surround text

Quickly and efficiently surround text with evil-surround3. Highlight blocks of text with function definitions, quotations, or any symbol you can input from your keyboard.

(use-package evil-surround
  :after evil
  :config (global-evil-surround-mode 1))

Line numbering

Relative line numbers are important when using VI emulation keys. You can prefix commands with a number, allowing you to perform that action that number of times. Useful when navigating around pages that are hundreds, or even thousands of lines long.

  5:
  4:
  3:
  2:
  1:
156: << CURRENT LINE >>
  1:
  2:
  3:
  4:
  5:

This behaviour is implemented with linum-relative4, hooking into the display-line-number-mode as the backend for good performance in the GUI or TTY.

(use-package linum-relative
  :commands (linum-relative-global-mode)
  :custom (linum-delay t)
          (linum-relative-backend 'display-line-numbers-mode))

Toggle comments

Toggle comments in a language agnostic manner with evil-nerd-commenter5. Add a custom binding to M-; to mimmic the behaviour in other popular Emacs configuration frameworks. What is M-? Called the Meta key in Emacs, it typically refers to Alt.

(use-package evil-nerd-commenter
  :after evil
  :bind ("M-;" . evilnc-comment-or-uncomment-lines))

Shortcuts

Toggle relative line numbers with SPC t l.

(dotfiles/leader
  "tl" '(linum-relative-global-mode :which-key "Lines"))

Footnotes