nixos/home/emacs/init.org

#+TITLE: Emacs Config
#+AUTHOR: Evie Litherland-Smith
#+EMAIL: evie@xenia.me.uk
#+FILETAGS: :emacs:config:org:
#+PROPERTY: header-args:emacs-lisp :tangle yes :mkdirp yes :results output silent

* Common defaults
#+BEGIN_SRC emacs-lisp :results output silent
  (setq custom-file (locate-user-emacs-file "custom.el"))
  (when (and custom-file (file-exists-p custom-file))
    (load custom-file nil 'nomessage))

  (setq user-full-name "Evie Litherland-Smith"
        user-mail-address "evie@xenia.me.uk"
        use-short-answers t
        load-prefer-newer t
        indent-tabs-mode nil
        even-window-sizes nil
        global-auto-revert-non-file-buffers t
        dired-auto-revert-buffer t
        dired-dwim-target t
        tab-always-indent 'complete
        completion-cycle-threshold 3
        completions-detailed t
        xref-show-definitions-function #'xref-show-definitions-completing-read
        kill-do-not-save-duplicates t
        auto-window-vscroll nil
        fast-but-imprecise-scrolling t
        scroll-conservatively 101
        scroll-margin 0
        scroll-preserve-screen-position 1)

  (set-default-coding-systems 'utf-8)
  (set-terminal-coding-system 'utf-8)
  (set-keyboard-coding-system 'utf-8)

  (global-auto-revert-mode +1)
  (delete-selection-mode)
  (recentf-mode -1)


  (keymap-global-set "M-#" #'dictionary-lookup-definition)

  ;; turn on spell checking, if available.
  (when (and (require 'ispell nil :noerror) (executable-find ispell-program-name))
    (add-hook 'text-mode-hook #'flyspell-mode)
    (add-hook 'prog-mode-hook #'flyspell-prog-mode))

  ;; Make shebang (#!) file executable when saved
  (add-hook 'after-save-hook #'executable-make-buffer-file-executable-if-script-p)
#+END_SRC

** Auto-save file settings
#+begin_src emacs-lisp :tangle yes
  (setq backup-directory-alist '(("." . "~/.local/state/emacs/backups"))
        tramp-backup-directory-alist backup-directory-alist
        tramp-auto-save-directory (cdr (assoc "." tramp-backup-directory-alist)))
#+end_src
** package-archive with priorities
#+begin_src emacs-lisp :results output silent
  (when (require 'package nil :noerror)
    (add-to-list 'package-archives '("stable" . "https://stable.melpa.org/packages/"))
    (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))

    (setq package-archive-priorities '(("gnu" . 99)
                                       ("nongnu" . 80)
                                       ("stable" . 70)
                                       ("melpa" . 0))))
#+end_src

** Authentication
#+begin_src emacs-lisp
  (when (require 'auth-source nil :noerror)
    (setq auth-sources '("secrets:Login"))
    (when (require 'auth-source-pass nil :noerror)
      (auth-source-pass-enable)))
#+end_src

** Helpful
#+begin_src emacs-lisp
  ;; Make `describe-*' screens more helpful
  (use-package helpful
    :ensure t
    :bind (("<remap> <describe-command>" . helpful-command)
           ("<remap> <describe-function>" . helpful-callable)
           ("<remap> <describe-key>" . helpful-key)
           ("<remap> <describe-symbol>" . helpful-symbol)
           ("<remap> <describe-variable>" . helpful-variable)
           ("C-h F" . helpful-function)
           :map helpful-mode-map
           ("<remap> <revert-buffer>" . helpful-update)))

  ;; Bind extra `describe-*' commands
  (keymap-global-set "C-h K" #'describe-keymap)
#+end_src

** ibuffer
#+begin_src emacs-lisp
  (use-package ibuffer
    :ensure t
    :bind (("C-c b" . ibuffer)))

  (use-package ibuffer-project
    :ensure t
    :after ibuffer
    :hook ((ibuffer . (lambda ()
                        (setq ibuffer-filter-groups (ibuffer-project-generate-filter-groups))
                        (unless (eq ibuffer-sorting-mode 'project-file-relative)
                          (ibuffer-do-sort-by-project-file-relative))))))
#+end_src

** Link hint keymaps
#+begin_src emacs-lisp
  (use-package link-hint
    :ensure t
    :bind (("C-c l o" . link-hint-open-link)
           ("C-c l c" . link-hint-copy-link)
           ("C-c l C-o" . link-hint-open-all-link)
           ("C-c l C-c" . link-hint-copy-all-link)))
#+end_src

** Avy keymaps
#+begin_src emacs-lisp
  (use-package avy
    :ensure t
    :bind (("C-c j w" . avy-goto-word-0)
           ("C-c j c" . avy-goto-char)
           ("C-c j l" . avy-goto-line)))
#+end_src
* UI
#+begin_src emacs-lisp
  (setq use-dialog-box nil
        fill-column 80
        truncate-lines nil
        truncate-partial-width-windows nil)

  (menu-bar-mode -1)
  (tool-bar-mode -1)
  (scroll-bar-mode -1)
  (tab-bar-mode -1)
  (global-display-line-numbers-mode -1)
  (global-prettify-symbols-mode +1)
  (global-visual-line-mode +1)

  (use-package which-key
    :ensure t
    :config (which-key-mode +1))

  (use-package page-break-lines
    :ensure t
    :config (global-page-break-lines-mode +1))

  ;; add visual pulse when changing focus, like beacon but built-in
  ;; from from https://karthinks.com/software/batteries-included-with-emacs/
  (defun pulse-line (&rest _)
    "Pulse the current line."
    (pulse-momentary-highlight-one-line (point)))

  (dolist (command '(scroll-up-command
                     scroll-down-command
                     recenter-top-bottom
                     other-window))
    (advice-add command :after #'pulse-line))
#+end_src

** Theme, font and nerd-icons
#+begin_src emacs-lisp
  (set-frame-parameter nil 'alpha-background 80)
  (set-frame-font "Fira Code-12")

  ;; Theme
  (use-package modus-themes
    :ensure t
    :config (load-theme 'modus-vivendi-tinted :noconfirm))

  ;; Nerd-Icons modes
  (use-package nerd-icons
    :ensure t
    :config (nerd-icons-set-font "Symbols Nerd Font Mono"))

  (use-package nerd-icons-dired
    :ensure t
    :hook (dired-mode))

  (use-package nerd-icons-ibuffer
    :ensure t
    :hook (ibuffer-mode))

  (use-package nerd-icons-completion
    :ensure t
    :config (nerd-icons-completion-mode +1))

  (use-package nerd-icons-corfu
    :ensure t
    :after corfu
    :config (add-to-list 'corfu-margin-formatters #'nerd-icons-corfu-formatter))

  (keymap-global-set "C-c i n" #'nerd-icons-insert)
#+end_src

** Window management

*** winner
#+begin_src emacs-lisp
  (use-package winner
    :ensure t
    :demand
    :bind (("C-c w u" . winner-undo)
           ("C-c w r" . winner-redo))
    :config
    (winner-mode))
#+end_src

** Font ligatures
#+begin_src emacs-lisp
  (use-package ligature
    :ensure t
    :config
    ;; Enable the "www" ligature in every possible major mode
    (ligature-set-ligatures 't '("www"))
    ;; Enable traditional ligature support in eww-mode, if the
    ;; `variable-pitch' face supports it
    (ligature-set-ligatures 'eww-mode '("ff" "fi" "ffi"))
    ;; Enable all Cascadia and Fira Code ligatures in programming modes
    (ligature-set-ligatures '(prog-mode org-mode)
                            '(;; == === ==== => =| =>>=>=|=>==>> ==< =/=//=// =~
                              ;; =:= =!=
                              ("=" (rx (+ (or ">" "<" "|" "/" "~" ":" "!" "="))))
                              ;; ;; ;;;
                              (";" (rx (+ ";")))
                              ;; && &&&
                              ("&" (rx (+ "&")))
                              ;; !! !!! !. !: !!. != !== !~
                              ("!" (rx (+ (or "=" "!" "\." ":" "~"))))
                              ;; ?? ??? ?:  ?=  ?.
                              ("?" (rx (or ":" "=" "\." (+ "?"))))
                              ;; %% %%%
                              ("%" (rx (+ "%")))
                              ;; |> ||> |||> ||||> |] |} || ||| |-> ||-||
                              ;; |->>-||-<<-| |- |== ||=||
                              ;; |==>>==<<==<=>==//==/=!==:===>
                              ("|" (rx (+ (or ">" "<" "|" "/" ":" "!" "}" "\]"
                                              "-" "=" ))))
                              ;; \\ \\\ \/
                              ("\\" (rx (or "/" (+ "\\"))))
                              ;; ++ +++ ++++ +>
                              ("+" (rx (or ">" (+ "+"))))
                              ;; :: ::: :::: :> :< := :// ::=
                              (":" (rx (or ">" "<" "=" "//" ":=" (+ ":"))))
                              ;; // /// //// /\ /* /> /===:===!=//===>>==>==/
                              ("/" (rx (+ (or ">"  "<" "|" "/" "\\" "\*" ":" "!"
                                              "="))))
                              ;; .. ... .... .= .- .? ..= ..<
                              ;; ("\." (rx (or "=" "-" "\?" "\.=" "\.<" (+ "\."))))
                              ;; -- --- ---- -~ -> ->> -| -|->-->>->--<<-|
                              ("-" (rx (+ (or ">" "<" "|" "~" "-"))))
                              ;; *> */ *)  ** *** ****
                              ("*" (rx (or ">" "/" ")" (+ "*"))))
                              ;; www wwww
                              ("w" (rx (+ "w")))
                              ;; <> <!-- <|> <: <~ <~> <~~ <+ <* <$ </  <+> <*>
                              ;; <$> </> <|  <||  <||| <|||| <- <-| <-<<-|-> <->>
                              ;; <<-> <= <=> <<==<<==>=|=>==/==//=!==:=>
                              ;; << <<< <<<<
                              ("<" (rx (+ (or "\+" "\*" "\$" "<" ">" ":" "~"  "!"
                                              "-"  "/" "|" "="))))
                              ;; >: >- >>- >--|-> >>-|-> >= >== >>== >=|=:=>>
                              ;; >> >>> >>>>
                              (">" (rx (+ (or ">" "<" "|" "/" ":" "=" "-"))))
                              ;; #: #= #! #( #? #[ #{ #_ #_( ## ### #####
                              ("#" (rx (or ":" "=" "!" "(" "\?" "\[" "{" "_(" "_"
                                           (+ "#"))))
                              ;; ~~ ~~~ ~=  ~-  ~@ ~> ~~>
                              ("~" (rx (or ">" "=" "-" "@" "~>" (+ "~"))))
                              ;; __ ___ ____ _|_ __|____|_
                              ("_" (rx (+ (or "_" "|"))))
                              ;; The few not covered by the regexps.
                              "{|"  "[|"  "]#"  "(*"  "}#"  "$>"  "^="))
    (ligature-set-ligatures 'prog-mode
                            '(;; Fira code: 0xFF 0x12
                              ("0" (rx (and "x" (+ (in "A-F" "a-f" "0-9")))))
                              ;; Fira code:
                              "Fl"  "Tl"  "fi"  "fj"  "fl"  "ft"))
    ;; Enables ligature checks globally in all buffers. You can also do it
    ;; per mode with `ligature-mode'.
    (global-ligature-mode t))
#+end_src

** Modeline
#+begin_src emacs-lisp
  (line-number-mode +1)
  (column-number-mode +1)
  (size-indication-mode +1)
  (display-time-mode -1)
  (display-battery-mode -1)
#+end_src

*** Doom Modeline
#+begin_src emacs-lisp :tangle yes
  (use-package doom-modeline
    :ensure t
    :custom
    (doom-modeline-icon t)
    (doom-modeline-buffer-encoding 'nondefault)
    (doom-modeline-enable-word-count t)
    (doom-modeline-continuous-word-count-modes
     '(org-mode markdown-mode gfm-mode))
    :config
    (doom-modeline-mode +1))
#+end_src

** Darkroom
#+begin_src emacs-lisp
  (use-package darkroom
    :ensure t
    :bind (("C-c d" . darkroom-mode)))
#+end_src

* Org-mode
For reference information, see [[https://orgmode.com][Org-mode website]]

#+BEGIN_SRC emacs-lisp :results output silent
  (setq org-directory "~/Org"
        org-default-notes-file (expand-file-name "notes.org" org-directory)
        org-pretty-entities-include-sub-superscripts t
        org-pretty-entities-include-sub-superscripts t
        org-tags-column 0
        org-outline-path-complete-in-steps nil
        org-return-follows-link t
        org-mouse-1-follows-link t
        org-link-descriptive t
        org-refile-use-outline-path t
        org-refile-allow-creating-parent-nodes t
        org-refile-use-outline-path 'file
        org-refile-targets '((nil :maxlevel . 3)
                             (org-agenda-files :maxlevel . 3)))

  ;; Visually indent org-mode files to a given header level
  (add-hook 'org-mode-hook #'org-indent-mode)

  (use-package org
    :ensure t
    :custom
    (org-babel-load-languages '((emacs-lisp . t)
                                (python . t))))
#+END_SRC

** Keymaps
#+begin_src emacs-lisp :results output silent
  (keymap-global-set "C-c o ." #'calendar)
  (keymap-global-set "C-c o e" #'org-edit-src-code)
  (keymap-global-set "C-c o a" #'org-agenda)
  (keymap-global-set "C-c o n" #'org-capture)
  (keymap-global-set "C-c o l" #'org-capture-goto-last-stored)

  (use-package org-modern
    :ensure t
    :hook ((org-mode . org-modern-mode)
           (org-agenda-finalize . org-modern-agenda))
    :custom
    (org-modern-tag nil))
#+end_src

** org-agenda
#+begin_src emacs-lisp :results output silent
  (setq org-agenda-span 'week
        org-agenda-start-on-weekday 1
        org-agenda-files (list (expand-file-name org-directory)
                               (expand-file-name "journal" org-directory)
                               (expand-file-name "projects" org-directory))
        org-agenda-sticky t
        org-agenda-window-setup 'current-window
        org-agenda-prefix-format '((agenda . " %-12:c%?-12t% s")
                                   (todo . " %-12:c")
                                   (tags . " %-12:c")
                                   (search . " %-12:c")))
#+end_src

** org-journal
#+BEGIN_SRC emacs-lisp :results output silent
  (use-package org-journal
    :bind (("C-c o j" . org-journal-new-entry))
    :custom
    (org-journal-dir (expand-file-name "journal" org-directory))
    (org-journal-file-type 'monthly)
    (org-journal-file-format "%Y-%m.org"))
#+END_SRC

** Capture templates
#+BEGIN_SRC emacs-lisp :results output silent
  (setq org-capture-templates
        '(("n" "Note" entry
           (file+headline "inbox.org" "Note")
           "* %?"
           :prepend t
           :empty-lines 1)
          ("t" "Task" entry
           (file+headline "inbox.org" "Task")
           "* TODO %?"
           :prepend t
           :empty-lines 1)
          ("m" "Email Workflow")
          ("mf" "Follow Up" entry (file+olp "mail.org" "Follow Up")
           "* TODO Follow up with %:fromname on %a\nSCHEDULED:%t\nDEADLINE: %(org-insert-time-stamp (org-read-date nil t \"+2d\"))\n\n%i")
          ("mr" "Read Later" entry (file+olp "mail.org" "Read Later")
           "* TODO Read %:subject\nSCHEDULED:%t\nDEADLINE: %(org-insert-time-stamp (org-read-date nil t \"+2d\"))\n\n%a\n\n%i")
          ))
#+END_SRC

** TODO Citar
#+begin_src emacs-lisp :results output silent
  (let ((citar-base-directory "~/References"))
    (setq citar-bibliography (expand-file-name "main.bib" citar-base-directory)
          citar-library-paths (list (expand-file-name "library" citar-base-directory))
          citar-notes-paths (list (expand-file-name "notes" citar-base-directory))))
  (use-package citar
    :ensure t
    :bind (("C-c o c o" . citar-open))
    :config
    (defvar citar-indicator-files-icons
      (citar-indicator-create
       :symbol (nerd-icons-octicon
                "nf-oct-file"
                :face 'nerd-icons-green
                :v-adjust -0.1)
       :function #'citar-has-files
       :padding "  " ; need this because the default padding is too low for these icons
       :tag "has:files"))
    (defvar citar-indicator-links-icons
      (citar-indicator-create
       :symbol (nerd-icons-octicon
                "nf-oct-link"
                :face 'nerd-icons-orange
                :v-adjust 0.01)
       :function #'citar-has-links
       :padding "  "
       :tag "has:links"))
    (defvar citar-indicator-notes-icons
      (citar-indicator-create
       :symbol (nerd-icons-octicon
                "nf-oct-note"
                :face 'nerd-icons-blue
                :v-adjust -0.3)
       :function #'citar-has-notes
       :padding "    "
       :tag "has:notes"))
    (defvar citar-indicator-cited-icons
      (citar-indicator-create
       :symbol (nerd-icons-octicon
                "nf-oct-circle"
                :face 'nerd-icon-green)
       :function #'citar-is-cited
       :padding "  "
       :tag "is:cited"))
    (setq citar-indicators (list citar-indicator-files-icons
                                 citar-indicator-links-icons
                                 citar-indicator-notes-icons
                                 citar-indicator-cited-icons)))
#+end_src

** Khalel
#+begin_src emacs-lisp :results output silent
  (use-package khalel
    :demand
    :hook (org-agenda-mode . khalel-import-events)
    :config
    (khalel-add-capture-template "e")
    :custom
    (khalel-import-org-file (expand-file-name "calendar.org" org-directory))
    (khalel-import-org-file-read-only nil)
    (khalel-import-org-file-confirm-overwrite nil)
    (khalel-import-start-date "-30d")
    (khalel-import-end-date "+30d"))
#+end_src
** TODO Crafted config
#+BEGIN_SRC emacs-lisp
  

  ;; Disable auto-pairing of "<" in org-mode with electric-pair-mode
  (defun crafted-org-enhance-electric-pair-inhibit-predicate ()
    "Disable auto-pairing of \"<\" in `org-mode' when using `electric-pair-mode'."
    (when (and electric-pair-mode (eql major-mode #'org-mode))
      (setq-local electric-pair-inhibit-predicate
                  `(lambda (c)
                     (if (char-equal c ?<)
                         t
                       (,electric-pair-inhibit-predicate c))))))

  ;; Add hook to both electric-pair-mode-hook and org-mode-hook
  ;; This ensures org-mode buffers don't behave weirdly,
  ;; no matter when electric-pair-mode is activated.
  (add-hook 'electric-pair-mode-hook #'crafted-org-enhance-electric-pair-inhibit-predicate)
  (add-hook 'org-mode-hook #'crafted-org-enhance-electric-pair-inhibit-predicate)
#+END_SRC

* Development Environment
#+BEGIN_SRC emacs-lisp
  (use-package rainbow-delimiters
    :ensure t
    :hook (prog-mode))

  (use-package apheleia
    :ensure t
    :defer nil
    :bind (("C-c c f" . apheleia-format-buffer))
    :custom (apheleia-remote-algorithm 'local)
    :config (apheleia-global-mode +1))

  (use-package treesit-auto
    :config (global-treesit-auto-mode +1))

  (use-package direnv
    :ensure t
    :custom (direnv-always-show-summary nil)
    :config (direnv-mode +1))
#+END_SRC

** Eglot LSP
#+BEGIN_SRC emacs-lisp
  (use-package eglot
    :ensure t
    :bind (("C-c c e" . eglot))
    :hook ((nix-mode
            fortran-mode
            shell-script-mode
            markdown-mode
            lua-mode
            python-mode
            python-ts-mode
            rust-mode
            rust-ts-mode) . eglot-ensure)
    :custom
    (eglot-extend-to-xref t)
    (eglot-autoshutdown t)
    (eglot-autoreconnect nil))
#+END_SRC

** Flymake
#+begin_src emacs-lisp :tangle yes
  (use-package flymake
    :ensure t
    :bind (("C-c C-." . flymake-goto-next-error)
           ("C-c C-," . flymake-goto-prev-error)))
#+end_src
** Project
#+BEGIN_SRC emacs-lisp
  (setq project-switch-use-entire-map t
        project-switch-commands 'project-dired)
#+END_SRC
** Version control
*** Magit
#+begin_src emacs-lisp
  (use-package magit
    :ensure t
    :bind (("C-c g g" . magit-status)
           ("C-c g d" . magit-dispatch)
           ("C-c g f" . magit-file-dispatch)
           ("C-c g p" . magit-pull)
           ("C-c g P" . magit-push)
           ("<remap> <project-vc-dir" . magit-project-status)
           :map project-prefix-map
           ("m" . magit-project-status))
    :custom
    (magit-define-global-key-bindings nil)
    (magit-clone-default-directory "~/Projects/")
    (magit-commit-show-diff nil)
    (magit-commit-diff-inhibit-same-window t))
#+end_src
** Completion
*** Vertico
#+begin_src emacs-lisp
  (use-package vertico
    :ensure t
    :custom
    (vertico-cycle t)
    :config
    (require 'vertico-directory)
    (vertico-mode +1))
#+end_src

*** Marginalia
#+begin_src emacs-lisp
  (use-package marginalia
    :ensure t
    :custom
    (marginalia-annotators '(marginalia-annotators-heavy
                             marginalia-annotators-light
                             nil))
    :config (marginalia-mode +1))
#+end_src

*** Orderless
#+begin_src emacs-lisp
  (use-package orderless
    :ensure t
    :custom
    (completion-styles '(orderless basic))
    (completion-category-defaults nil)
    (completion-category-overrides '((file (styles . (partial-completion))))))
#+end_src

*** Corfu and Cape
#+begin_src emacs-lisp
  (use-package corfu
    :ensure t
    :custom
    (corfu-cycle t)
    (corfu-auto t)
    (corfu-auto-prefix 3)
    :config
    (global-corfu-mode +1)
    (when (require 'corfu-popupinfo nil :noerror)
      (corfu-popupinfo-mode 1)
      (eldoc-add-command #'corfu-insert)
      (keymap-set corfu-map "M-p" #'corfu-popupinfo-scroll-down)
      (keymap-set corfu-map "M-n" #'corfu-popupinfo-scroll-up)
      (keymap-set corfu-map "M-d" #'corfu-popupinfo-toggle))
    (defun crafted-completion-corfu-eshell ()
      "Special settings for when using corfu with eshell."
      (setq-local corfu-quit-at-boundary t
                  corfu-quit-no-match t
                  corfu-auto nil)
      (corfu-mode))
    (add-hook 'eshell-mode-hook #'crafted-completion-corfu-eshell))

  (use-package cape
    :ensure t
    :config
    (add-to-list 'completion-at-point-functions #'cape-file)
    (add-to-list 'completion-at-point-functions #'cape-dabbrev)
    (advice-add 'pcomplete-completions-at-point :around #'cape-wrap-silent)
    (advice-add 'pcomplete-completions-at-point :around #'cape-wrap-purify))
#+end_src

*** Consult
#+begin_src emacs-lisp
  (use-package consult
    :ensure t
    :bind (("C-s" . consult-line)
           ("<remap> <imenu>" . consult-imenu )
           ("<remap> <switch-to-buffer>" . consult-buffer)
           ("<remap> <project-switch-to-buffer>" . consult-project-buffer)
           ("<remap> <org-goto>" . consult-org-heading)
           ("C-c s f" . consult-fd)
           ("C-c s g" . consult-ripgrep)
           ("C-c s e" . consult-flymake)
           ("C-c s t" . consult-theme)
           :map minibuffer-local-map
           ("C-r" . consult-history))
    :config (setq completion-in-region-function #'consult-completion-in-region))

  (use-package consult-yasnippet
    :ensure t
    :after consult
    :commands (consult-yasnippet))

  (use-package consult-eglot
    :ensure t
    :after consult
    :requires eglot
    :commands (consult-eglot-symbols)
    :bind (("C-c s s" . consult-eglot-symbols)))
#+end_src

*** Embark
#+begin_src emacs-lisp
  (use-package embark
    :ensure t
    :bind (("<remap> <describe-bindings>" . embark-bindings)
           ("C-." . embark-act))
    :config (setq prefix-help-command #'embark-prefix-help-command))

  (use-package embark-consult
    :ensure t
    :after (embark consult)
    :hook (embark-collect-mode . consult-preview-at-point-mode))
#+end_src
** Snippets
#+begin_src emacs-lisp
  (use-package yasnippet
    :ensure t
    :hook ((prog-mode org-mode) . yas-minor-mode))

  (use-package yasnippet-snippets
    :ensure t
    :after yasnippet
    :config (yas-reload-all))

  (use-package yasnippet-capf
    :ensure t
    :after cape
    :config
    (add-to-list 'completion-at-point-functions #'yasnippet-capf))
#+end_src
** Aggressive Indent
#+begin_src emacs-lisp
  (use-package aggressive-indent
    :ensure t
    :hook (elisp-mode
           lisp-mode
           lisp-data-mode
           rust-mode))
#+end_src

* Internet

** TODO Gnus
#+begin_src emacs-lisp :tangle yes
  (setq gnus-select-method '(nnrss "http://www.fsf.org/static/fsforg/rss/news.xml"))
#+end_src
** Email
#+BEGIN_SRC emacs-lisp
  (setq sendmail-program (executable-find "msmtp")
        send-mail-function #'smtpmail-send-it
        message-sendmail-f-is-evil t
        message-sendmail-extra-arguments '("--read-envelope-from")
        message-send-mail-function #'message-send-mail-with-sendmail
        message-auto-save-directory nil
        message-kill-buffer-on-exit t
        mail-user-agent 'mu4e-user-agent
        read-mail-command 'mu4e)

  (use-package mu4e
    :bind (("C-c o m" . mu4e))
    :custom
    (mu4e-completing-read-function #'completing-read-default)
    (mu4e-split-view 'horizontal)
    (mu4e-attachment-dir "~/Downloads")
    (mu4e-get-mail-command "mbsync -a")
    (mu4e-update-interval (* 5 60)) ; Every 5 minutes
    (mu4e-headers-auto-update nil)
    (mu4e-sent-messages-behavior 'sent)
    (mu4e-change-filenames-when-moving t)
    (mu4e-context-policy 'ask-if-none)
    (mu4e-compose-context-policy 'ask-if-none)
    (mu4e-maildir-shortcuts '((:maildir "/Proton/Inbox/" :key ?p)
                              (:maildir "/iCloud/Inbox/" :key ?i)
                              (:maildir "/Outlook/Inbox/" :key ?w)))
    (mu4e-headers-fields
     '((:human-date . 8)
       (:from-or-to . 30)
       (:subject . 82)
       (:flags)))
    (mu4e-headers-visible-flags
     '(draft
       flagged
       unread
       passed
       replied
       trashed
       attach
       calendar
       encrypted
       signed
       list
       personal))
    :config
    (setq
     mu4e-use-fancy-chars t
     mu4e-modeline-all-read '("R:" . "󰑇 ")
     mu4e-modeline-all-clear '("C:" . "󰚭 ")
     mu4e-modeline-new-items '("N:" . "󰎔 ")
     mu4e-modeline-unread-items '("U:" . "󰶊 ")
     mu4e-search-full-label '("F" . "󱊖 ")
     mu4e-search-hide-label '("H" . "󰘓 ")
     mu4e-search-related-label '("R" . "󰻧 ")
     mu4e-search-skip-duplicates-label '("D" . "󰆑 ")
     mu4e-search-threaded-label'("T" . "󱇫 ")
     mu4e-headers-draft-mark '("D" . "󰻣 ")
     mu4e-headers-flagged-mark '("F" . "󰈻 ")
     mu4e-headers-unread-mark '("u" . "󰶊 ")
     mu4e-headers-passed-mark '("P" . "󱃜 ")
     mu4e-headers-replied-mark '("R" . "󱃚 ")
     mu4e-headers-trashed-mark '("T" . "󰩹 ")
     mu4e-headers-attach-mark '("a" . "󰁦 ")
     mu4e-headers-calendar-mark '("c" . "󰃭 ")
     mu4e-headers-encrypted-mark '("x" . "󰇱 ")
     mu4e-headers-signed-mark '("s" . "󰷻 ")
     mu4e-headers-list-mark '("l" . "󰻧 ")
     mu4e-headers-personal-mark '("p" . "󰍡 ")
     mu4e-headers-seen-mark '("S" . "󰑇 ")
     mu4e-headers-new-mark '("N" . "󰎔 ")
     mu4e-headers-from-or-to-prefix '("   " . "To ")
     mu4e-headers-thread-root-prefix          '("* " . "* ")
     mu4e-headers-thread-duplicate-prefix     '("= " . "= ")
     mu4e-headers-thread-blank-prefix         '("  " . "  ")
     mu4e-headers-thread-single-orphan-prefix '("─>" . "─▶")
     mu4e-headers-thread-orphan-prefix        '("┬>" . "┬▶")
     mu4e-headers-thread-connection-prefix    '("│ " . "│ ")
     mu4e-headers-thread-first-child-prefix   '("├>" . "├▶")
     mu4e-headers-thread-child-prefix         '("├>" . "├▶")
     mu4e-headers-thread-last-child-prefix    '("└>" . "╰▶")
     mu4e-marks '((refile :char
                          ("r" . "󰀼 ")
                          :prompt "refile" :dyn-target
                          (lambda
                            (target msg)
                            (mu4e-get-refile-folder msg))
                          :action
                          (lambda
                            (docid msg target)
                            (mu4e--server-move docid
                                               (mu4e--mark-check-target target)
                                               "-N")))
                  (delete :char
                          ("D" . "󰗨 ")
                          :prompt "Delete" :show-target
                          (lambda
                            (target)
                            "delete")
                          :action
                          (lambda
                            (docid msg target)
                            (mu4e--server-remove docid)))
                  (flag :char
                        ("+" . "󰈻 ")
                        :prompt "+flag" :show-target
                        (lambda
                          (target)
                          "flag")
                        :action
                        (lambda
                          (docid msg target)
                          (mu4e--server-move docid nil "+F-u-N")))
                  (move :char
                        ("m" . "󰪹 ")
                        :prompt "move" :ask-target mu4e--mark-get-move-target :action
                        (lambda
                          (docid msg target)
                          (mu4e--server-move docid
                                             (mu4e--mark-check-target target)
                                             "-N")))
                  (read :char
                        ("!" . "󰑇 ")
                        :prompt "!read" :show-target
                        (lambda
                          (target)
                          "read")
                        :action
                        (lambda
                          (docid msg target)
                          (mu4e--server-move docid nil "+S-u-N")))
                  (trash :char
                         ("d" . "󰆴 ")
                         :prompt "dtrash" :dyn-target
                         (lambda
                           (target msg)
                           (mu4e-get-trash-folder msg))
                         :action
                         (lambda
                           (docid msg target)
                           (mu4e--server-move docid
                                              (mu4e--mark-check-target target)
                                              "+T-N")))
                  (unflag :char
                          ("-" . "󱣮 ")
                          :prompt "-unflag" :show-target
                          (lambda
                            (target)
                            "unflag")
                          :action
                          (lambda
                            (docid msg target)
                            (mu4e--server-move docid nil "-F-N")))
                  (untrash :char
                           ("=" . "󱂧 ")
                           :prompt "=untrash" :show-target
                           (lambda
                             (target)
                             "untrash")
                           :action
                           (lambda
                             (docid msg target)
                             (mu4e--server-move docid nil "-T")))
                  (unread :char
                          ("?" . "󰮒 ")
                          :prompt "?unread" :show-target
                          (lambda
                            (target)
                            "unread")
                          :action
                          (lambda
                            (docid msg target)
                            (mu4e--server-move docid nil "-S+u-N")))
                  (unmark :char " " :prompt "unmark" :action
                          (mu4e-error "No action for unmarking"))
                  (action :char
                          ("a" . "󰋘 ")
                          :prompt "action" :ask-target
                          (lambda nil
                            (mu4e-read-option "Action: " mu4e-headers-actions))
                          :action
                          (lambda
                            (docid msg actionfunc)
                            (save-excursion
                              (when
                                  (mu4e~headers-goto-docid docid)
                                (mu4e-headers-action actionfunc)))))
                  (something :char
                             ("*" . "󱗿 ")
                             :prompt "*something" :action
                             (mu4e-error "No action for deferred mark"))))
    (require 'mu4e-org)
    (mu4e-modeline-mode)
    (setq mu4e-contexts
          (list
           (make-mu4e-context
            :name "Xenia"
            :vars '((user-mail-address . "evie@xenia.me.uk")
                    (mu4e-sent-folder . "/Proton/Sent")
                    (mu4e-drafts-folder . "/Proton/Drafts")
                    (mu4e-trash-folder . "/Proton/Trash")
                    (mu4e-refile-folder . "/Proton/Archive")))
           (make-mu4e-context
            :name "Proton"
            :match-func (lambda (msg) (when msg (string-prefix-p "/Proton" (mu4e-message-field msg :maildir))))
            :vars '((user-mail-address . "e.litherlandsmith@proton.me")
                    (mu4e-sent-folder . "/Proton/Sent")
                    (mu4e-drafts-folder . "/Proton/Drafts")
                    (mu4e-trash-folder . "/Proton/Trash")
                    (mu4e-refile-folder . "/Proton/Archive")))
           (make-mu4e-context
            :name "iCloud"
            :match-func (lambda (msg) (when msg (string-prefix-p "/iCloud" (mu4e-message-field msg :maildir))))
            :vars '((user-mail-address . "e.litherlandsmith@icloud.com")
                    (mu4e-sent-folder . "/iCloud/Sent Messages")
                    (mu4e-drafts-folder . "/iCloud/Drafts")
                    (mu4e-trash-folder . "/iCloud/Deleted Messages")
                    (mu4e-refile-folder . "/iCloud/Archive")))
           (make-mu4e-context
            :name "Work"
            :match-func (lambda (msg) (when msg (string-prefix-p "/Outlook" (mu4e-message-field msg :maildir))))
            :vars '((user-mail-address . "evie.litherland-smith@ukaea.uk")
                    (mu4e-sent-folder . "/Outlook/Sent")
                    (mu4e-drafts-folder . "/Outlook/Drafts")
                    (mu4e-trash-folder . "/Outlook/Trash")
                    (mu4e-refile-folder . "/Outlook/Archive"))))))

  (use-package mu4e-alert
    :after mu4e
    :config
    (mu4e-alert-set-default-style 'libnotify)
    (mu4e-alert-enable-notifications)
    (mu4e-alert-disable-mode-line-display))

#+END_SRC

** TODO Feeds
#+BEGIN_SRC emacs-lisp
  (let ((elfeed-base-directory "~/.elfeed"))
    (setq elfeed-db-directory (expand-file-name "db" elfeed-base-directory)
          elfeed-enclosure-default-dir (expand-file-name "enclosures" elfeed-base-directory)
          rmh-elfeed-org-files (list (expand-file-name "feeds.org" elfeed-base-directory))))
  (use-package elfeed
    :bind (("C-c f f" . elfeed)
           ("C-c f u" . elfeed-update))
    :hook (elfeed-search-mode . elfeed-update)
    :config
    (use-package elfeed-org
      :ensure t
      :config (elfeed-org))
    (use-package elfeed-tube
      :ensure t
      :config (elfeed-tube-setup)))
#+END_SRC

** Social

*** Mastodon
#+BEGIN_SRC emacs-lisp
  (use-package mastodon
    :commands mastodon
    :custom
    (mastodon-instance-url "https://tech.lgbt")
    (mastodon-active-user "Tux922"))
#+END_SRC

*** Matrix / Ement.el
#+begin_src emacs-lisp
  (defun my/ement-connect-pantalaimon ()
    "Connect to ement.el by calling `ement-connect' with pantalaimon service as uri-prefix"
    (interactive)
    (ement-connect
     :user-id "@evie:xenia.me.uk"
     :uri-prefix "http://localhost:8008"))

  (use-package ement
    :ensure t
    :commands ement-connect
    :bind (("C-c m m" . ement-list-rooms)
           ("C-c m n" . ement-notifications)
           ("C-c m j" . ement-room-join)
           ("C-c m l" . ement-room-leave)
           ("C-c m v" . ement-room-view)
           ("C-c m s" . ement-view-space)
           ("C-c m c" . my/ement-connect-pantalaimon))
    :custom
    (ement-save-sessions t))
#+end_src


* Media

** EMMS
#+BEGIN_SRC emacs-lisp
  (setq emms-mode-line-icon-enabled-p nil)
  (use-package emms
    :bind (("C-c e e" . emms-pause)
           ("C-c e s" . emms-stop)
           ("C-c e b" . emms-browser)
           ("C-c e p" . emms-playlist-mode-go)
           ("C-c e C-e" . emms-smart-browse))
    :custom
    (emms-player-list '(emms-player-mpv))
    (emms-info-functions '(emms-info-native))
    (emms-source-file-default-directory "~/Music")
    (emms-lyrics-dir "~/Music/lyrics")
    :config
    (emms-all)
    (emms-mpris-enable)
    (add-hook 'emms-player-started-hook #'emms-show))
#+END_SRC

* TODO Writing
#+BEGIN_SRC emacs-lisp
  ;;; Whitespace
  (defun crafted-writing-configure-whitespace (use-tabs &optional use-globally &rest enabled-modes)
    "Helper function to configure `whitespace' mode.

  Enable using TAB characters if USE-TABS is non-nil.  If
  USE-GLOBALLY is non-nil, turn on `global-whitespace-mode'.  If
  ENABLED-MODES is non-nil, it will be a list of modes to activate
  whitespace mode using hooks.  The hooks will be the name of the
  mode in the list with `-hook' appended.  If USE-GLOBALLY is
  non-nil, ENABLED-MODES is ignored.

  Configuring whitespace mode is not buffer local.  So calling this
  function twice with different settings will not do what you
  think.  For example, if you wanted to use spaces instead of tabs
  globally except for in Makefiles, doing the following won't work:

  ;; turns on global-whitespace-mode to use spaces instead of tabs
  (crafted-writing-configure-whitespace nil t)

  ;; overwrites the above to turn to use tabs instead of spaces,
  ;; does not turn off global-whitespace-mode, adds a hook to
  ;; makefile-mode-hook
  (crafted-writing-configure-whitespace t nil 'makefile-mode)

  Instead, use a configuration like this:
  ;; turns on global-whitespace-mode to use spaces instead of tabs
  (crafted-writing-configure-whitespace nil t)

  ;; turn on the buffer-local mode for using tabs instead of spaces.
  (add-hook 'makefile-mode-hook #'indent-tabs-mode)

  For more information on `indent-tabs-mode', See the info
  node `(emacs)Just Spaces'

  Example usage:

  ;; Configuring whitespace mode does not turn on whitespace mode
  ;; since we don't know which modes to turn it on for.
  ;; You will need to do that in your configuration by adding
  ;; whitespace mode to the appropriate mode hooks.
  (crafted-writing-configure-whitespace nil)

  ;; Configure whitespace mode, but turn it on globally.
  (crafted-writing-configure-whitespace nil t)

  ;; Configure whitespace mode and turn it on only for prog-mode
  ;; and derived modes.
  (crafted-writing-configure-whitespace nil nil 'prog-mode)"
    (if use-tabs
        (customize-set-variable 'whitespace-style
                                '(face empty trailing indentation::tab
                                       space-after-tab::tab
                                       space-before-tab::tab))
      ;; use spaces instead of tabs
      (customize-set-variable 'whitespace-style
                              '(face empty trailing tab-mark
                                     indentation::space)))

    (if use-globally
        (global-whitespace-mode 1)
      (when enabled-modes
        (dolist (mode enabled-modes)
          (add-hook (intern (format "%s-hook" mode)) #'whitespace-mode))))

    ;; cleanup whitespace
    (customize-set-variable 'whitespace-action '(cleanup auto-cleanup)))

  ;;; parentheses
  (electric-pair-mode 1) ; auto-insert matching bracket
  (show-paren-mode 1)    ; turn on paren match highlighting

  ;;; LaTeX configuration
  (with-eval-after-load 'latex
    (customize-set-variable 'TeX-auto-save t)
    (customize-set-variable 'TeX-parse-self t)
    (setq-default TeX-master nil)

    ;; compile to pdf
    (tex-pdf-mode)

    ;; correlate the source and the output
    (TeX-source-correlate-mode)

    ;; set a correct indentation in a few additional environments
    (add-to-list 'LaTeX-indent-environment-list '("lstlisting" current-indentation))
    (add-to-list 'LaTeX-indent-environment-list '("tikzcd" LaTeX-indent-tabular))
    (add-to-list 'LaTeX-indent-environment-list '("tikzpicture" current-indentation))

    ;; add a few macros and environment as verbatim
    (add-to-list 'LaTeX-verbatim-environments "lstlisting")
    (add-to-list 'LaTeX-verbatim-environments "Verbatim")
    (add-to-list 'LaTeX-verbatim-macros-with-braces "lstinline")
    (add-to-list 'LaTeX-verbatim-macros-with-delims "lstinline")

    ;; electric pairs in auctex
    (customize-set-variable 'TeX-electric-sub-and-superscript t)
    (customize-set-variable 'LaTeX-electric-left-right-brace t)
    (customize-set-variable 'TeX-electric-math (cons "$" "$"))

    ;; open all buffers with the math mode and auto-fill mode
    (add-hook 'LaTeX-mode-hook #'auto-fill-mode)
    (add-hook 'LaTeX-mode-hook #'LaTeX-math-mode)

    ;; add support for references
    (add-hook 'LaTeX-mode-hook #'turn-on-reftex)
    (customize-set-variable 'reftex-plug-into-AUCTeX t)

    ;; to have the buffer refresh after compilation
    (add-hook 'TeX-after-compilation-finished-functions #'TeX-revert-document-buffer))

  (defun crafted-latex-use-pdf-tools ()
    "Use PDF Tools instead of docview, requires a build environment
  to compile PDF Tools.

  Depends on having `pdf-tools'."

    (with-eval-after-load 'latex
      (customize-set-variable 'TeX-view-program-selection '((output-pdf "PDF Tools")))
      (customize-set-variable 'TeX-view-program-list '(("PDF Tools" TeX-pdf-tools-sync-view)))
      (customize-set-variable 'TeX-source-correlate-start-server t)))

  ;; message the user if the latex executable is not found
  (defun crafted-writing-tex-warning-if-no-latex-executable ()
    "Print a message to the minibuffer if the \"latex\" executable cannot be found."
    (unless (executable-find "latex")
      (message "latex executable not found")))
  (add-hook 'tex-mode-hook #'crafted-writing-tex-warning-if-no-latex-executable)

  (when (and (executable-find "latex")
             (executable-find "latexmk"))
    (with-eval-after-load 'latex
      (when (require 'auctex-latexmk nil 'noerror)
        (with-eval-after-load 'auctex-latexmk
          (auctex-latexmk-setup)
          (customize-set-variable 'auctex-latexmk-inherit-TeX-PDF-mode t))

        (defun crafted-writing-tex-make-latexmk-default-command ()
          "Set `TeX-command-default' to \"LatexMk\"."
          (setq TeX-command-default "LatexMk"))
        (add-hook 'TeX-mode-hook #'crafted-writing-tex-make-latexmk-default-command))))

  ;;; Markdown
  (when (fboundp 'markdown-mode)
    ;; because the markdown-command variable may not be loaded (yet),
    ;; check manually for the other markdown processors.  If it is
    ;; loaded, the others are superfluous but `or' fails fast, so they
    ;; are not checked if `markdown-command' is set and the command is
    ;; indeed found.
    (unless (or (and (boundp 'markdown-command)
                     (executable-find markdown-command))
                (executable-find "markdown")
                (executable-find "pandoc"))
      (message "No markdown processor found, preview may not possible."))

    (with-eval-after-load 'markdown-mode
      (customize-set-variable 'markdown-enable-math t)
      (customize-set-variable 'markdown-enable-html t)
      (add-hook 'markdown-mode-hook #'conditionally-turn-on-pandoc)))

  ;;; PDF Support when using pdf-tools
  (when (locate-library "pdf-tools")
    ;; load pdf-tools when going into doc-view-mode
    (defun crafted-writing-load-pdf-tools ()
      "Attempts to require pdf-tools, but for attaching to hooks."
      (require 'pdf-tools nil :noerror))
    (add-hook 'doc-view-mode-hook #'crafted-writing-load-pdf-tools)

    ;; when pdf-tools is loaded, apply settings.
    (with-eval-after-load 'pdf-tools
      (setq-default pdf-view-display-size 'fit-width)))
#+END_SRC