flocon/private_dot_emacs.d/config.org

#+auto_tangle:

* Emacs config

** Packages initialization

Here, we're initializing MELPA, as well as package.el and use-package.

#+begin_src emacs-lisp
    (require 'package)
  (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
  ;; Comment/uncomment this line to enable MELPA Stable if desired.  See `package-archive-priorities`
  ;; and `package-pinned-packages`. Most users will not need or want to do this.
  ;;(add-to-list 'package-archives '("melpa-stable" . "https://stable.melpa.org/packages/") t)

  (unless package-archive-contents
    (package-refresh-contents))

  (unless (package-installed-p 'use-package)
    (package-install 'use-package))

  (require 'use-package)
  (setq use-package-always-ensure t)
  #+end_src

** General config
*** Minimal interface

We disable a lot of interface elements, to make the editor more minimal looking.

#+begin_src emacs-lisp
  (setq inhibit-startup-message t)
  (scroll-bar-mode -1)
  (tool-bar-mode -1)
  (tooltip-mode -1)
  (set-fringe-mode 10)
  (menu-bar-mode -1)
#+end_src

*** Match fish shell's path
#+begin_src emacs-lisp
    (defun set-exec-path-from-shell-PATH ()
    "Set up Emacs' `exec-path' and PATH environment variable to match
  that used by the user's shell.

  This is particularly useful under Mac OS X and macOS, where GUI
  apps are not started from a shell."
    (interactive)
    (let ((path-from-shell (replace-regexp-in-string
			    "[ \t\n]*$" "" (shell-command-to-string
					    "/usr/bin/fish --login -c 'string join : $PATH'"
						      ))))
      (setenv "PATH" path-from-shell)
      (setq exec-path (split-string path-from-shell path-separator))))

  (set-exec-path-from-shell-PATH)

#+end_src
*** Bell

I don't like any visual or sound bell.

#+begin_src emacs-lisp
  (setq ring-bell-function 'ignore)
#+end_src
*** Font

I use the default monospace font, as it allows me to configure it system wide and have everything coherent. We just make it bigger here for readability.

#+begin_src emacs-lisp
  (set-face-attribute 'default nil :height 125)
#+end_src

*** Visual mode

We turn on visual mode, so that lines can wrap nicely and do go beyond my Emacs buffer size.

#+begin_src emacs-lisp
  (visual-line-mode t)
#+end_src

*** Theme
I use catppuccin as my theme, as I find it comfortable to work with (the Frappe flavor).

#+begin_src emacs-lisp
  (use-package catppuccin-theme
    :init
    (setq catppuccin-flavor 'frappe)
    :config
    (load-theme 'catppuccin :no-confirm))
#+end_src

*** Modeline

I use doom-modeline as my modeline, as I find it really clean and minimal.

#+begin_src emacs-lisp
  (use-package doom-modeline
  :ensure t
  :init (doom-modeline-mode 1)
  :config
  (setq doom-modeline-height 30)
  (setq nerd-icons-font-family "monospace"))
#+end_src

*** Completion

I use vertico as my completion framework. It's minimal, fast and tells me all I need to know and even sorts by history.

#+begin_src emacs-lisp
  (use-package vertico
    :init
    (vertico-mode)

    ;; Different scroll margin
    ;; (setq vertico-scroll-margin 0)

    ;; Show more candidates
    ;; (setq vertico-count 20)

    ;; Grow and shrink the Vertico minibuffer
    (setq vertico-resize t)

    ;; Optionally enable cycling for `vertico-next' and `vertico-previous'.
    (setq vertico-cycle t)
    )

  ;; Persist history over Emacs restarts. Vertico sorts by history position.
  (use-package savehist
    :init
    (savehist-mode))

  ;; A few more useful configurations...
  (use-package emacs
    :init
    ;; Add prompt indicator to `completing-read-multiple'.
    ;; We display [CRM<separator>], e.g., [CRM,] if the separator is a comma.
    (defun crm-indicator (args)
      (cons (format "[CRM%s] %s"
		    (replace-regexp-in-string
		     "\\`\\[.*?]\\*\\|\\[.*?]\\*\\'" ""
		     crm-separator)
		    (car args))
	    (cdr args)))
    (advice-add #'completing-read-multiple :filter-args #'crm-indicator)

    ;; Do not allow the cursor in the minibuffer prompt
    (setq minibuffer-prompt-properties
	  '(read-only t cursor-intangible t face minibuffer-prompt))
    (add-hook 'minibuffer-setup-hook #'cursor-intangible-mode)

    ;; Support opening new minibuffers from inside existing minibuffers.
    (setq enable-recursive-minibuffers t)

    ;; Emacs 28 and newer: Hide commands in M-x which do not work in the current
    ;; mode.  Vertico commands are hidden in normal buffers. This setting is
    ;; useful beyond Vertico.
    (setq read-extended-command-predicate #'command-completion-default-include-p))

#+end_src
*** which-key

which-key is a nice little package that allows to have a minibuffer showing which keybinds are available under prefixes.

#+begin_src emacs-lisp
  (use-package which-key
    :config
    (which-key-mode))
#+end_src

*** quelpa

quelpa is a package that allows to build packages from source.

#+begin_src emacs-lisp
  (unless (package-installed-p 'quelpa)
    (with-temp-buffer
      (url-insert-file-contents "https://raw.githubusercontent.com/quelpa/quelpa/master/quelpa.el")
      (eval-buffer)
      (quelpa-self-upgrade)))
#+end_src

use-package integration with quelpa.
#+begin_src emacs-lisp
  (quelpa
     '(quelpa-use-package
     :fetcher git
     :url "https://github.com/quelpa/quelpa-use-package.git"))
  (require 'quelpa-use-package)
#+end_src

*** Reload org config config on save

This allows to tangle automatically when saving the config. This is mostly for convenience.
#+begin_src emacs-lisp
  (use-package org-auto-tangle
    :hook (org-mode . org-auto-tangle-mode)
  :config
  (defun my/reload-config-on-save ()
    (when (string-equal (buffer-file-name)
			(expand-file-name "~/.emacs.d/config.org"))
      (load-file (expand-file-name "~/.emacs.d/config.el"))))
    (add-hook 'after-save-hook #'my/reload-config-on-save))
  #+end_src

** Org mode

*** Pretty bullets and headlines

I use org-superstar-mode, as it makes headlines and bullets look really nice.

#+begin_src emacs-lisp
  (use-package org-superstar
    :hook (org-mode . org-superstar-mode))
#+end_src

** Programming
*** LSP
#+begin_src emacs-lisp
  (defun my-lsp-mode-setup ()
    "Enable lsp-mode except in org-mode and emacs-lisp-mode."
    (unless (or (derived-mode-p 'org-mode)
		(derived-mode-p 'emacs-lisp-mode))
      (lsp)))

  (use-package lsp-mode
    :hook (prog-mode . my-lsp-mode-setup)
    :init
    (setq lsp-keymap-prefix "C-c l"))

  (use-package lsp-ui)
#+end_src

*** Autocompletion
#+begin_src emacs-lisp
  (use-package company)
#+end_src

*** Snippets
#+begin_src emacs-lisp
  (use-package yasnippet
    :ensure t
    :diminish yas-minor-mode
    :hook (prog-mode . yas-minor-mode)
    :bind (:map yas-minor-mode-map
		("C-c C-e" . yas-expand)))
#+end_src

*** Languages

**** Rust

#+begin_src emacs-lisp
  (use-package rust-mode
    :init
    (setq rust-format-on-save t))
#+end_src

**** Typescript
#+begin_src emacs-lisp
  (use-package typescript-mode)
#+end_src

***** Biome
Biome is a formatter for Typescript, and integrates with LSP.

#+begin_src emacs-lisp
  (use-package lsp-biome
    :quelpa (lsp-biome :fetcher github :repo "cxa/lsp-biome"))
#+end_src