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Nathan's Doom Emacs Configuration

My doom emacs configuration

Basic Doom stuff

The provided default config.el

;;; $DOOMDIR/config.el -*- lexical-binding: t; -*-

;; Place your private configuration here! Remember, you do not need to run 'doom
;; sync' after modifying this file!


;; Some functionality uses this to identify you, e.g. GPG configuration, email
;; clients, file templates and snippets. It is optional.
(setq user-full-name "Nathan McCarty"
      user-mail-address "nathan@mccarty.io")

;; Doom exposes five (optional) variables for controlling fonts in Doom:
;;
;; - `doom-font' -- the primary font to use
;; - `doom-variable-pitch-font' -- a non-monospace font (where applicable)
;; - `doom-big-font' -- used for `doom-big-font-mode'; use this for
;;   presentations or streaming.
;; - `doom-unicode-font' -- for unicode glyphs
;; - `doom-serif-font' -- for the `fixed-pitch-serif' face
;;
;; See 'C-h v doom-font' for documentation and more examples of what they
;; accept. For example:
;;
(setq doom-font (font-spec :family "FiraCode Nerd Font" :size 11 :weight 'semi-light)
      doom-variable-pitch-font (font-spec :family "Fira Sans" :size 15))
;;
;; If you or Emacs can't find your font, use 'M-x describe-font' to look them
;; up, `M-x eval-region' to execute elisp code, and 'M-x doom/reload-font' to
;; refresh your font settings. If Emacs still can't find your font, it likely
;; wasn't installed correctly. Font issues are rarely Doom issues!

;; There are two ways to load a theme. Both assume the theme is installed and
;; available. You can either set `doom-theme' or manually load a theme with the
;; `load-theme' function. This is the default:
;; (setq doom-theme 'doom-solarized-dark)
(use-package! solarized-theme
  :demand t
  :config
  (setq solarized-distinct-fringe-background t
        solarized-distinct-doc-face t
        solarized-scale-markdown-headlines t
        solarized-scale-org-headlines t)
  (load-theme 'solarized-selenized-dark t))

;; This determines the style of line numbers in effect. If set to `nil', line
;; numbers are disabled. For relative line numbers, set this to `relative'.
(setq display-line-numbers-type t)

;; If you use `org' and don't want your org files in the default location below,
;; change `org-directory'. It must be set before org loads!
(setq org-directory "~/Org/")


;; Whenever you reconfigure a package, make sure to wrap your config in an
;; `after!' block, otherwise Doom's defaults may override your settings. E.g.
;;
;;   (after! PACKAGE
;;     (setq x y))
;;
;; The exceptions to this rule:
;;
;;   - Setting file/directory variables (like `org-directory')
;;   - Setting variables which explicitly tell you to set them before their
;;     package is loaded (see 'C-h v VARIABLE' to look up their documentation).
;;   - Setting doom variables (which start with 'doom-' or '+').
;;
;; Here are some additional functions/macros that will help you configure Doom.
;;
;; - `load!' for loading external *.el files relative to this one
;; - `use-package!' for configuring packages
;; - `after!' for running code after a package has loaded
;; - `add-load-path!' for adding directories to the `load-path', relative to
;;   this file. Emacs searches the `load-path' when you load packages with
;;   `require' or `use-package'.
;; - `map!' for binding new keys
;;
;; To get information about any of these functions/macros, move the cursor over
;; the highlighted symbol at press 'K' (non-evil users must press 'C-c c k').
;; This will open documentation for it, including demos of how they are used.
;; Alternatively, use `C-h o' to look up a symbol (functions, variables, faces,
;; etc).
;;
;; You can also try 'gd' (or 'C-c c d') to jump to their definition and see how
;; they are implemented.

Appearance and UI

Centaur tabs 

(after! centaur-tabs
  (setq centaur-tabs-set-icons t
        centaur-tabs-set-bar 'underflow
        centaur-tabs-style "alternate")
  (centaur-tabs-headline-match)
  (centaur-tabs-group-by-projectile-project))

Mixed Pitch Mode

Use mixed pitch mode in prose writing modes, to make the writing experience a bit more pleasant. This tweak applies to:

  • org-mode
  • markdown-mode
(use-package! mixed-pitch
  :hook
  (org-mode . mixed-pitch-mode)
  (markdown-mode . mixed-pitch-mode)
  :config
  (setq mixed-pitch-set-height t))

Setting mixed-pitch-set-height is required to get mixed-pitch-mode to render fonts with the correct size in doom emacs, apparently.

Basic Editing

Navigation

Avy

More modern ace-jump-mode

Set up our key bindings

(after! avy
  (define-key!
    "C-:" 'avy-goto-char
    "C-'" 'avy-goto-char-2
    "M-g f" 'avy-goto-line
    "M-g w" 'avy-goto-word-1
    "M-g e" 'avy-goto-word-0)
  (cheatsheet-add-group 'Avy
                        '(:key "C-:" :description "Goto Char")
                        '(:key "C-'" :description "Goto Char (2)")
                        '(:key "M-g f" :description "Goto line")
                        '(:key "M-g w" :description "Goto word")
                        '(:key "M-g e" :description "Goto word (0)")))

Swiper

Better isearch

Override old isearch

(after! swiper
  (define-key! "C-s" 'swiper))

Crux

Smarter replacements for emacs built ins, with the following in use:

  • crux-smart-kill-line - Smart C-k replacement
  • crux-top-join-line - C-c ^ Join two lines
(use-package! crux
  :bind (("C-k"   . crux-smart-kill-line)
         ("C-c ^" . crux-top-join-line)))

string-inflection

Automatically cycle case of names

(global-unset-key (kbd "C-q"))
(use-package! string-inflection
  :bind (("C-q" . string-inflection-all-cycle)))
(cheatsheet-add-group 'string-inflection
                      '(:key "C-q" :description "Rotate case"))

Smart Hungry Delete

Gobble up whitespace in a smarter way

(use-package! smart-hungry-delete
  :bind (("M-<backspace>" . smart-hungry-delete-backward-char)))

Search

Deadgrep

Ripgrep, but from within emacs

(use-package! deadgrep
  :bind ("C-c s r" . deadgrep))

Org Mode

Improvements to the best mode in emacs

Setup some basic cosmetic improvements

  • Disable showing of emphasis markers

  • Show entities as utf-8 test

    (setq org-hide-emphasis-markers t
    org-pretty-entities t)

    Setup font lock for normal (non-heading) list items, to make things a bit more pleasnt to look at

    (font-lock-add-keywords 'org-mode
                      '(("^ *\\([-]\\) "
                         0 (prog1 () (compose-region (match-beginning 1) (match-end 1) "")))
                        ("^ *\\([+]\\) "
                         0 (prog1 () (compose-region (match-beginning 1) (match-end 1) "")))))

org-roam

A second brain in emacs

Here we:

  • Set the roam directory to be a sub-directory of the org directory, which I have in syncthing
  • Use a more informative display template, as we use ivy
  • Turn on db autosync
  • Setup dalies to add the time of the capture to the note
(use-package! org-roam
  :custom
  (org-roam-directory (concat org-directory "Roam/"))
  (org-roam-complete-everywhere t)
  :bind (("C-c r l" . org-roam-buffer-toggle)
         ("C-c r f" . org-roam-node-find)
         ("C-c r g" . org-roam-graph)
         ("C-c r i" . org-roam-node-insert)
         ("C-c r c" . org-roam-capture)
         ("C-c r T" . org-roam-dailies-capture-today)
         ("C-c r t" . org-roam-dailies-goto-today)
         :map org-mode-map
         ("C-M-i" . completion-at-point))
  :config
  (setq org-roam-node-display-template (concat "${title:*} " (propertize "${tags:10}" 'face 'org-tag)))
  (org-roam-db-autosync-mode)
  (setq org-roam-dailies-capture-templates
      '(("d" "default" entry "* %<%I:%M %p>: %?"
         :if-new (file+head "%<%Y-%m-%d>.org" "#+title: %<%Y-%m-%d>\n")))))

General Modes

Magit

Further configuration for magit

magit-todos

Count the number of todos in the project in the magit-status buffer

(use-package! magit-todos
  :hook (magit-mode . magit-todos-mode))

magit-delta

Use delta for git diff display

(use-package! magit-delta
  :hook (magit-mode . magit-delta-mode))

magit-wip-mode

Stash autosaves inside of git

(magit-wip-mode)

System integration

Various tools for interacting with the system from within emacs

Terminal

Doom already provides pretty nice vterm support, but lets take us a step further, using multi-vterm to provide ergonomic support for multiple terminals.

Vterm really doesn't like being installed through emacs on nix, so proper support for it in my setup requires installing it through nix like so:

let emacsPackage = (emacsPackagesFor emacs).emacsWithPackages (epgks: with epkgs; [
      vterm
    ]);
in
{
  environment.systemPackages = [
    emacsPackage
  ];
}
multi-vterm

Add ergonomic support for multiple vterm terminals

(use-package! multi-vterm
  :bind (("C-c o M" . multi-vterm)
         ("C-c o m" . multi-vterm-project)))

Programming

General Editing

Sepraedit

Edit indirect for comments

Set the default mode to github flavored markdown, turn on smart use of fill column, and bind to the normal edit-indirect keybinding.

(use-package! separedit
  :bind
  (:map prog-mode-map
   ("C-c '" . separedit))
  :config
  (setq separedit-default-mode 'gfm-mode
        separedit-continue-fill-column t))

LSP Mode

Custom configuration for lsp-mode

LSP UI

Turn on the UI features we want

Sideline

Show as much as possible in the sideline

(after! lsp-ui
  (setq lsp-ui-sideline-show-diagnostics t
      lsp-ui-sideline-show-hover t
      lsp-ui-sideline-show-code-actions t))
Peeking

Turn on peeking, and show us the directory as well

(after! lsp-ui
  (setq lsp-ui-peek-enable t
      lsp-ui-peek-show-directory t))
Documentation

Show the documentation in a popup frame in the top right corner

(after! lsp-ui
  (setq lsp-ui-doc-enable t
      lsp-ui-doc-position 'top
      lsp-ui-doc-show-with-cursor t))

Rust

Configuration specific for rust

LSP Tweaks

Most of these are defaults, but I like having them explicit for my sanity

(after! lsp-mode
  (setq lsp-auto-configure t
        lsp-lens-enable t
        lsp-rust-analyzer-cargo-watch-command "clippy"
        lsp-rust-analyzer-cargo-watch-args ["--all-features"]
        lsp-rust-analyzer-experimental-proc-attr-macros t
        lsp-rust-analyzer-proc-macro-enable t
        lsp-rust-analyzer-use-rustc-wrapper-for-build-scripts t
        lsp-rust-analyzer-import-enforce-granularity t))

Composition

Modes for handling plain text and prose

Markdown

Everybody's favorite markup format

Markdown mode

Make the following configuration tweaks to result in a better markdown experience:

  • Use a variable pitch font (this is prose after all)
  • Turn on header scaling
  • Default to gfm mode for readmes
  • Turn on auto-fill mode
  • Hide mark up
  • Fontify code blocks with the language's native mode

The goal here is to create a more pretty and fluid composition environment for prose, closer to what you would get in a word processor, but without the horrors of wysiwyg.

(use-package! markdown-mode
  :mode ("README\\.md" . gfm-mode)
  :hook (markdown-mode . variable-pitch-mode)
        (markdown-mode . auto-fill-mode)
  :config
  (setq markdown-header-scaling t
        markdown-hide-markup t
        markdown-fontify-code-blocks-natively t))

Grip mode

Provide a live, rendered preview when editing markdown readmes using grip.

(use-package! grip-mode
  :bind (:map markdown-mode-command-map
         ("g" . grip-mode)))

Applications

Emacs is good for more than just editing text

RSS

Use elfeed for RSS. Doom provides most of the configuration, but we'll make a few minor tweaks:

  • Automatically update the feed when opening elfeed
  • Set default filter to only show unread posts
  • Put the elfeed directory in the org dir (I have it in syncthing)
  • Create a global keybinding for elfeed (C-x w)
(use-package! elfeed
  :hook (elfeed-search-mode . elfeed-update)
  :bind ("C-x w" . elfeed)
  :config
  (setq elfeed-search-filter "@2-weeks-ago +unread"
        elfeed-db-directory (concat org-directory "elfeed/db/")
        elfeed-enclosure-default-dir (concat org-directory "elfeed/enclosures/"))
  (make-directory elfeed-db-directory t))