(Emacs)~Merged app.org, lang.org and core.org back into config.org

Just makes it easier to profile and deal with compilation
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2024-05-13 16:58:28 +05:30
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#+title: Applications for Emacs
#+author: Aryadev Chavali
#+description: Applications for my Emacs OS™
#+date: 2023-09-29
#+property: header-args:emacs-lisp :tangle app.el :comments link :results none
#+options: toc:nil
#+startup: noindent
Applications are greater than packages; they provide a set of
functionality to create an interface in Emacs. Emacs comes with
applications and others may be installed.
* WAIT Dashboard
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Dashboard creates a custom dashboard for Emacs that replaces the
initial startup screen in default Emacs. It has a lot of customising
options.
Unfortunately not that useful, many things are easier to invoke
directly such as recent files or project changing.
#+begin_src emacs-lisp
(use-package dashboard
:straight t
:demand t
:general
(app-leader
"b" #'dashboard-refresh-buffer)
(:states '(normal motion emacs)
:keymaps 'dashboard-mode-map
"q" (proc (interactive) (kill-this-buffer)))
(nmmap
:keymaps 'dashboard-mode-map
"r" #'dashboard-jump-to-recent-files
"p" #'dashboard-jump-to-projects
"}" #'dashboard-next-section
"{" #'dashboard-previous-section)
:init
(setq initial-buffer-choice nil
dashboard-banner-logo-title "Oreomacs"
dashboard-center-content t
dashboard-set-init-info t
dashboard-startup-banner (no-littering-expand-etc-file-name "dashboard/logo.png")
dashboard-set-footer t
dashboard-set-navigator t
dashboard-items '((projects . 5)
(recents . 5))
dashboard-footer-messages (list
"Collecting parentheses..."
"Linking 'coffee_machine.o'..."
"Uploading ip to hacker named 4chan..."
"Dividing by zero..."
"Solving 3-sat..."
"Obtaining your health record..."
(format "Recompiling Emacs for the %dth time..." (random 1000))
"Escaping the cycle of samsara..."))
:config
(dashboard-setup-startup-hook))
#+end_src
* EWW
Emacs Web Wowser is the inbuilt text based web browser for Emacs. It
can render images and basic CSS styles but doesn't have a JavaScript
engine, which makes sense as it's primarily a text interface.
#+begin_src emacs-lisp
(use-package eww
:defer t
:general
(app-leader
"ww" #'eww
"wb" #'+eww/bookmarks-search
"we" #'+eww/bookmarks-edit)
(nmmap
:keymaps 'eww-mode-map
"w" #'evil-forward-word-begin
"Y" #'shr-probe-and-copy-url)
:straight nil
:config
(with-eval-after-load "evil-collection"
(evil-collection-eww-setup))
(defun bookmark->alist (bookmark)
(cons (plist-get bookmark :title)
(plist-get bookmark :url)))
(defun +eww/bookmarks-edit nil
(interactive)
(find-file (concat eww-bookmarks-directory "eww-bookmarks")))
(defun +eww/bookmarks-search nil
(interactive)
(let ((bookmarks (mapcar #'bookmark->alist eww-bookmarks)))
(eww
(alist-get (completing-read "Bookmark: " (mapcar #'car bookmarks) nil t)
bookmarks
nil
nil
#'string=)))))
#+end_src
* Calendar
Calendar is a simple inbuilt application that helps with date
functionalities. I add functionality to copy dates from the calendar
to the kill ring and bind it to "Y".
#+begin_src emacs-lisp
(use-package calendar
:straight nil
:defer t
:commands (+calendar/copy-date +calendar/toggle-calendar)
:display
("\\*Calendar\\*"
(display-buffer-at-bottom)
(inhibit-duplicate-buffer . t)
(window-height . 0.17))
:general
(nmmap
:keymaps 'calendar-mode-map
"Y" #'+calendar/copy-date)
(app-leader
"d" #'calendar)
:config
(defun +calendar/copy-date ()
"Copy date under cursor into kill ring."
(interactive)
(if (use-region-p)
(call-interactively #'kill-ring-save)
(let ((date (calendar-cursor-to-date)))
(when date
(setq date (encode-time 0 0 0 (nth 1 date) (nth 0 date) (nth 2 date)))
(kill-new (format-time-string "%Y-%m-%d" date)))))))
#+end_src
* Mail
Mail is a funny thing; most people use it just for business or
advertising and it's come out of use in terms of personal
communication in the west for the most part (largely due to "social"
media applications). However, this isn't true for the open source and
free software movement who heavily use mail for communication.
Integrating mail into Emacs helps as I can send source code and
integrate it into my workflow just a bit better.
** Notmuch
#+begin_src emacs-lisp
(use-package notmuch
:defer t
:commands (notmuch +mail/flag-thread)
:general
(app-leader "m" #'notmuch)
(nmap
:keymaps 'notmuch-search-mode-map
"f" #'+mail/flag-thread)
:init
(defconst +mail/signature "---------------\nAryadev Chavali")
(defconst +mail/local-dir (no-littering-expand-var-file-name "mail/"))
(setq notmuch-show-logo nil
notmuch-search-oldest-first nil
notmuch-hello-sections '(notmuch-hello-insert-saved-searches
notmuch-hello-insert-alltags
notmuch-hello-insert-recent-searches)
notmuch-archive-tags '("-inbox" "-unread" "+archive")
mail-signature +mail/signature
mail-default-directory +mail/local-dir
mail-source-directory +mail/local-dir
message-signature +mail/signature
message-auto-save-directory +mail/local-dir
message-directory +mail/local-dir)
(defun +mail/sync-mail ()
"Sync mail via mbsync."
(interactive)
(start-process-shell-command "" nil "mbsync -a"))
(defun +mail/trash-junk ()
"Delete any mail in junk"
(interactive)
(start-process-shell-command "" nil "notmuch search --output=files --format=text0 tag:deleted tag:spam tag:trash tag:junk | xargs -r0 rm"))
:config
(defun +mail/flag-thread (&optional unflag beg end)
(interactive (cons current-prefix-arg (notmuch-interactive-region)))
(notmuch-search-tag
(notmuch-tag-change-list '("-inbox" "+flagged") unflag) beg end)
(when (eq beg end)
(notmuch-search-next-thread)))
(advice-add #'notmuch-poll-and-refresh-this-buffer :after
#'+mail/trash-junk)
(with-eval-after-load "evil-collection"
(evil-collection-notmuch-setup)))
#+end_src
** Smtpmail
#+begin_src emacs-lisp
(use-package smtpmail
:straight nil
:commands mail-send
:init
(setq-default
smtpmail-smtp-server "mail.aryadevchavali.com"
smtpmail-smtp-user "aryadev"
smtpmail-smtp-service 587
smtpmail-stream-type 'starttls
send-mail-function #'smtpmail-send-it
message-send-mail-function #'smtpmail-send-it))
#+end_src
* Dired
Setup for dired. Make dired-hide-details-mode the default mode when
using dired-mode, as it removes the clutter. Setup evil collection
for dired (even though dired doesn't really conflict with evil, there
are some corners I'd like to adjust).
#+begin_src emacs-lisp
(use-package dired
:straight nil
:commands (dired find-dired)
:hook
(dired-mode-hook . auto-revert-mode)
(dired-mode-hook . dired-hide-details-mode)
:init
(setq-default dired-listing-switches "-AFBlu --group-directories-first"
dired-omit-files "^\\."
dired-dwim-target t
image-dired-external-viewer "nsxiv")
(with-eval-after-load "evil-collection"
(evil-collection-dired-setup))
:general
(nmmap
:keymaps 'dired-mode-map
"SPC" nil
"SPC ," nil
"T" #'dired-create-empty-file
"H" #'dired-up-directory
"L" #'dired-find-file)
(dir-leader
"f" #'find-dired
"d" #'dired
"D" #'dired-other-window
"i" #'image-dired
"p" `(,(proc (interactive)
(dired "~/Text/PDFs/"))
:which-key "Open PDFs"))
(local-leader
:keymaps 'dired-mode-map
"i" #'dired-maybe-insert-subdir
"I" #'+dired/insert-all-subdirectories
"k" #'dired-prev-subdir
"j" #'dired-next-subdir
"K" #'dired-kill-subdir
"m" #'dired-mark-files-regexp
"u" #'dired-undo)
(nmmap
:keymaps 'image-dired-thumbnail-mode-map
"h" #'image-dired-backward-image
"l" #'image-dired-forward-image
"j" #'image-dired-next-line
"k" #'image-dired-previous-line
"H" #'image-dired-display-previous
"L" #'image-dired-display-next
"RET" #'image-dired-display-this
"m" #'image-dired-mark-thumb-original-file
"q" #'quit-window)
:config
(add-to-list 'dired-guess-shell-alist-user '("\\.pdf\\'" "zathura"))
(defun +dired/insert-all-subdirectories ()
"Insert all subdirectories currently viewable."
(interactive)
(dired-mark-directories nil)
(mapc #'dired-insert-subdir (dired-get-marked-files))
(dired-unmark-all-marks)))
#+end_src
** fd-dired
Uses fd for finding file results in a directory: ~find-dired~ ->
~fd-dired~.
#+begin_src emacs-lisp
(use-package fd-dired
:after dired
:straight t
:general
(dir-leader
"g" #'fd-dired))
#+end_src
** wdired
Similar to [[file:config.org::*(Rip)grep][wgrep]] =wdired= provides
the ability to use Emacs motions and editing on file names. This
makes stuff like mass renaming and other file management tasks way
easier than even using the mark based system.
#+begin_src emacs-lisp
(use-package wdired
:after dired
:straight t
:general
(nmmap
:keymaps 'dired-mode-map
"W" #'wdired-change-to-wdired-mode)
(nmmap
:keymaps 'wdired-mode-map
"ZZ" #'wdired-finish-edit
"ZQ" #'wdired-abort-changes))
#+end_src
* WAIT Xwidget
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Xwidget is a package which allows for the insertion of arbitrary
xwidgets into Emacs through buffers. It must be compiled into Emacs
so you might need to customise your install. One of its premier uses
is in navigating the web which it provides through the function
~xwidget-webkit-browse-url~. This renders a fully functional web
browser within Emacs.
Though I am not to keen on using Emacs to browse the web /via/ xwidget
(EWW does a good job on its own), I am very interested in its
capability to render pages with JavaScript, as it may come of use when
doing web development. I can see the results of work very quickly
without switching windows all within Emacs.
2023-10-20: Disabled as it didn't seem to work, and honestly wasn't
that useful.
** Xwidget Core
#+begin_src emacs-lisp
(use-package xwidget
:straight nil
:general
(app-leader
"u" #'xwidget-webkit-browse-url)
(nmmap
:keymaps 'xwidget-webkit-mode-map
"q" #'quit-window
"h" #'xwidget-webkit-scroll-backward
"j" #'xwidget-webkit-scroll-up
"k" #'xwidget-webkit-scroll-down
"l" #'xwidget-webkit-scroll-forward
"+" #'xwidget-webkit-zoom-in
"-" #'xwidget-webkit-zoom-out
(kbd "C-f") #'xwidget-webkit-scroll-up
(kbd "C-b") #'xwidget-webkit-scroll-down
"H" #'xwidget-webkit-back
"L" #'xwidget-webkit-forward
"gu" #'xwidget-webkit-browse-url
"gr" #'xwidget-webkit-reload
"gg" #'xwidget-webkit-scroll-top
"G" #'xwidget-webkit-scroll-bottom))
#+end_src
** Xwidget Extensions
Define a function ~+xwidget/render-file~ that reads a file name and
presents it in an xwidget. If the current file is an HTML file, ask
if user wants to open current file. Bind it to ~aU~ in the leader.
Also define a function ~+xwidget/search-query~ that first asks the
user what search engine they want to use ([[https://duckduckgo.com][Duck Duck Go]] and [[https://devdocs.io][DevDocs]]
currently) then asks for a query, which it parses then presents in an
xwidget window. Bind to ~as~ in the leader.
#+begin_src emacs-lisp
(use-package xwidget
:straight nil
:commands (+xwidget/render-file +xwidget/search)
:general
(app-leader
"U" #'+xwidget/render-file
"s" #'+xwidget/search)
:config
(setenv "WEBKIT_FORCE_SANDBOX" "0")
(defun +xwidget/render-file (&optional FORCE)
"Find file (or use current file) and render in xwidget."
(interactive)
(cond
((and (not FORCE) (or (string= (replace-regexp-in-string ".*.html"
"html" (buffer-name)) "html")
(eq major-mode 'web-mode)
(eq major-mode 'html-mode))) ; If in html file
(if (y-or-n-p "Open current file?: ") ; Maybe they want to open a separate file
(xwidget-webkit-browse-url (format "file://%s" (buffer-file-name)))
(+xwidget/render-file t))) ; recurse and open file via prompt
(t
(xwidget-webkit-browse-url
(format "file://%s" (read-file-name "Enter file to open: "))))))
(defun +xwidget/search ()
"Run a search query on some search engine and display in
xwidget."
(interactive)
(let* ((engine (completing-read "Engine: " '("duckduckgo.com" "devdocs.io") nil t))
(query-raw (read-string "Enter query: "))
(query
(cond
((string= engine "duckduckgo.com") query-raw)
((string= engine "devdocs.io") (concat "_ " query-raw)))))
(xwidget-webkit-browse-url (concat "https://" engine "/?q=" query)))))
#+end_src
* Eshell
** Why Eshell?
Eshell is an integrated shell environment for Emacs, written in Emacs
Lisp. I argue that it is the best shell/command interpreter to use in
Emacs.
Eshell is unlike the alternatives in Emacs as it's a /shell/ first,
not a terminal emulator. It has the ability to spoof some aspects of a
terminal emulator (through the shell parser), but it is NOT a terminal
emulator.
The killer benefits of eshell (which would appeal to Emacs users) are
a direct result of eshell being written in Emacs lisp:
- incredible integration with Emacs utilities (such as ~dired~,
~find-file~, any read functions, etc)
- very extensible, easy to write new commands which leverage Emacs
commands as well as external utilities
- agnostic of platform: "eshell/cd" will call the underlying change
directory function for you, so commands will (usually) mean the same
thing regardless of platform
- this means as long as Emacs can run on an operating system, one
may run eshell
However, my favourite feature of eshell is the set of evaluators that
run on command input. Some of the benefits listed above come as a
result of this powerful feature. These evaluators are described below.
Lisp evaluator: works on braced expressions, evaluating them as Lisp
expressions (e.g. ~(message "Hello, World!\n")~). Any returned
objects are printed. This makes eshell a LISP REPL!
External evaluator: works within curly braces, evaluating them via
some external shell process (like sh) (e.g. ~{echo "Hello,
world!\n"}~). This makes eshell a (kinda dumb) terminal emulator!
The alias evaluator is the top level evaluator. It is the main
evaluator for each expression given to eshell. When given an
expression it tries to evaluate it by testing against these conditions:
- it's an alias defined by the user or in the ~eshell/~ namespace of
functions (simplest evaluator)
- it's some form of lisp expression (lisp evaluator)
- it's an external command (bash evaluator)
Essentially, you get the best of both Emacs and external shell
programs *ALL WITHIN* Emacs for free.
** Eshell functionality
Bind some evil-like movements for easy shell usage, and a toggle
function to pull up the eshell quickly.
#+begin_src emacs-lisp
(use-package eshell
:defer t
:general
(shell-leader
"t" #'eshell)
:init
(add-hook
'eshell-mode-hook
(proc
(interactive)
(general-def
:states '(normal insert)
:keymaps 'eshell-mode-map
"M-j" #'eshell-next-matching-input-from-input
"M-k" #'eshell-previous-matching-input-from-input)
(local-leader
:keymaps 'eshell-mode-map
"c" (proc (interactive) (eshell/clear)
(recenter))
"k" #'eshell-kill-process))))
#+end_src
** Eshell pretty symbols and display
Pretty symbols and a display record.
#+begin_src emacs-lisp
(use-package eshell
:defer t
:pretty
(eshell-mode-hook
("lambda" . "λ")
("numberp" . "")
("t" . "")
("nil" . "Ø"))
:display
("\\*e?shell\\*" ; for general shells as well
(display-buffer-at-bottom)
(window-height . 0.33)))
#+end_src
** Eshell variables and aliases
Set some sane defaults, a banner and a prompt. The prompt checks for
a git repo in the current directory and provides some extra
information in that case (in particular, branch name and if there any
changes that haven't been committed).
#+begin_src emacs-lisp
(use-package eshell
:defer t
:config
(defun +eshell/--git-get-remote-status ()
(let* ((branch-status (split-string
(shell-command-to-string "git status | grep 'Your branch is'")))
(status (nth 3 branch-status))
(diff (cl-position "by" branch-status :test #'string=)))
(if (null diff)
(propertize "=" 'font-lock-face '(:foreground "green"))
(let ((n (nth (+ 1 diff) branch-status)))
(concat
(cond
((string= status "ahead")
(propertize "" 'font-lock-face '(:foreground "dodger blue")))
((string= status "behind")
(propertize "" 'font-lock-face '(:foreground "orange red"))))
n)))))
(defun +eshell/--git-get-change-status ()
(let ((changed-files (- (length (split-string (shell-command-to-string "git status -s" ) "\n")) 1)))
(if (= changed-files 0)
(propertize "" 'font-lock-face '(:foreground "green"))
(propertize (number-to-string changed-files) 'font-lock-face '(:foreground "red")))))
(defun +eshell/get-git-properties ()
(let ((git-branch (shell-command-to-string "git branch")))
(if (or (string= git-branch "")
(not (string= "*" (substring git-branch 0 1))))
""
(format
"(%s<%s>[%s])"
(nth 2 (split-string git-branch "\n\\|\\*\\| "))
(+eshell/--git-get-change-status)
(+eshell/--git-get-remote-status)))))
(defun +eshell/prompt-function ()
(let ((git (+eshell/get-git-properties)))
(mapconcat
(lambda (item)
(if (listp item)
(propertize (car item)
'read-only t
'font-lock-face (cdr item)
'front-sticky '(font-lock-face read-only)
'rear-nonsticky '(font-lock-face read-only))
item))
(list
'("[")
`(,(abbreviate-file-name (eshell/pwd)) :foreground "LimeGreen")
'("]")
(if (string= git "")
""
(concat "-" git ""))
"\n"
`(,(format-time-string "[%H:%M:%S]") :foreground "purple")
"\n"
'("𝜆> " :foreground "DeepSkyBlue")))))
(defun +eshell/banner-message ()
(concat (shell-command-to-string "~/.local/scripts/cowfortune")
"\n"))
(setq eshell-cmpl-ignore-case t
eshell-cd-on-directory t
eshell-banner-message '(+eshell/banner-message)
eshell-highlight-prompt nil
eshell-prompt-function #'+eshell/prompt-function
eshell-prompt-regexp "^𝜆> "))
#+end_src
** Eshell change directory quickly
Add ~eshell/goto~, which is actually a command accessible from within
eshell (this is because ~eshell/*~ creates an accessible function
within eshell with name ~*~). ~eshell/goto~ makes it easier to change
directories by using Emacs' find-file interface (which is much faster
than ~cd ..; ls -l~).
~eshell/goto~ is a better ~cd~ for eshell. However it is really just
a plaster over a bigger issue for my workflow; many times I want
eshell to be present in the current directory of the buffer I am
using. So here's also a command for opening eshell with the current
directory.
#+begin_src emacs-lisp
(use-package eshell
:defer t
:general
(leader
"T" #'+eshell/current-buffer)
:config
(defun eshell/goto (&rest args)
"Use `read-directory-name' to change directories."
(eshell/cd (list (read-directory-name "Directory?: "))))
(defun eshell/project-root (&rest args)
"Change to directory `project-root'"
(if (project-current)
(eshell/cd (list (project-root (project-current))))
(eshell/echo (format "[%s]: No project in current directory"
(propertize "Error" 'font-lock-face '(:foreground "red"))))))
(defun +eshell/current-buffer ()
(interactive)
(let ((dir (if buffer-file-name
(file-name-directory buffer-file-name)
default-directory))
(buf (eshell)))
(if dir
(with-current-buffer buf
(eshell/cd dir)
(eshell-send-input))
(message "Could not switch eshell: buffer is not real file")))))
#+end_src
* WAIT Elfeed
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Elfeed is the perfect RSS feed reader, integrated into Emacs
perfectly. I've got a set of feeds that I use for a large variety of
stuff, mostly media and entertainment. I've also bound "<leader> ar"
to elfeed for loading the system.
#+begin_src emacs-lisp
(use-package elfeed
:general
(app-leader "r" #'elfeed)
(nmmap
:keymaps 'elfeed-search-mode-map
"gr" #'elfeed-update
"s" #'elfeed-search-live-filter
"<return>" #'elfeed-search-show-entry)
:init
(setq elfeed-db-directory (no-littering-expand-var-file-name "elfeed/"))
(setq +rss/feed-urls
'(("Arch Linux"
"https://www.archlinux.org/feeds/news/"
News Technology)
("The Onion"
"https://www.theonion.com/rss"
Social)
("Protesilaos Stavrou"
"https://www.youtube.com/@protesilaos"
YouTube Technology)
("Tsoding Daily"
"https://www.youtube.com/feeds/videos.xml?channel_id=UCrqM0Ym_NbK1fqeQG2VIohg"
YouTube Technology)
("Tsoding"
"https://www.youtube.com/feeds/videos.xml?channel_id=UCrqM0Ym_NbK1fqeQG2VIohg"
YouTube Technology)
("Nexpo"
"https://www.youtube.com/feeds/videos.xml?channel_id=UCpFFItkfZz1qz5PpHpqzYBw"
YouTube Stories)
("3B1B"
"https://www.youtube.com/feeds/videos.xml?channel_id=UCYO_jab_esuFRV4b17AJtAw"
YouTube)
("Fredrik Knusden"
"https://www.youtube.com/feeds/videos.xml?channel_id=UCbWcXB0PoqOsAvAdfzWMf0w"
YouTube Stories)
("Barely Sociable"
"https://www.youtube.com/feeds/videos.xml?channel_id=UC9PIn6-XuRKZ5HmYeu46AIw"
YouTube Stories)
("Atrocity Guide"
"https://www.youtube.com/feeds/videos.xml?channel_id=UCn8OYopT9e8tng-CGEWzfmw"
YouTube Stories)
("Hacker News"
"https://news.ycombinator.com/rss"
Social News Technology)
("Hacker Factor"
"https://www.hackerfactor.com/blog/index.php?/feeds/index.rss2"
Social)))
:config
(with-eval-after-load "evil-collection"
(evil-collection-elfeed-setup))
(setq elfeed-feeds (cl-map 'list #'(lambda (item)
(append (list (nth 1 item)) (cdr (cdr item))))
+rss/feed-urls))
(advice-add 'elfeed-search-show-entry :after #'+elfeed/dispatch-entry)
(defun +elfeed/dispatch-entry (entry)
"Process each type of entry differently.
e.g., you may want to open HN entries in eww."
(let ((url (elfeed-entry-link entry)))
(pcase url
((pred (string-match-p "https\\:\\/\\/www.youtube.com\\/watch"))
(mpv-play-url url))
(_ (eww url))))))
#+end_src
* Magit
Magit is *the* git porcelain for Emacs, which perfectly encapsulates
the git cli. In this case I just need to setup the bindings for it.
As magit will definitely load after evil (as it must be run by a
binding, and evil will load after init), I can use evil-collection
freely. Also, define an auto insert for commit messages so that I
don't need to write everything myself.
#+begin_src emacs-lisp
(use-package magit
:defer t
:display
("magit:.*"
(display-buffer-same-window)
(inhibit-duplicate-buffer . t))
("magit-diff:.*"
(display-buffer-below-selected))
("magit-log:.*"
(display-buffer-same-window))
:general
(leader
"g" '(magit-dispatch :which-key "Magit"))
(code-leader
"b" #'magit-blame)
:auto-insert
(("COMMIT_EDITMSG" . "Commit skeleton")
""
"(" (read-string "Enter feature/module: ") ")"
(read-string "Enter simple description: ") "\n\n")
:init
(setq vc-follow-symlinks t
magit-blame-echo-style 'lines
magit-copy-revision-abbreviated t)
:config
(with-eval-after-load "evil"
(evil-set-initial-state 'magit-status-mode 'motion))
(with-eval-after-load "evil-collection"
(evil-collection-magit-setup)))
#+end_src
* IBuffer
IBuffer is the dired of buffers: providing the ability to mark
buffers, mass rename/delete and just observe stuff.
#+begin_src emacs-lisp
(use-package ibuffer
:general
(buffer-leader
"i" #'ibuffer)
:config
(with-eval-after-load "evil-collection"
(evil-collection-ibuffer-setup)))
#+end_src
* Proced
Emacs has two systems for process management:
+ proced: a general 'top' like interface which allows general
management of linux processes
+ list-processes: a specific Emacs based system that lists processes
spawned by Emacs (similar to a top for Emacs specifically)
Core proced config, just a few bindings and evil collection setup.
#+begin_src emacs-lisp
(use-package proced
:straight nil
:general
(app-leader
"p" #'proced)
(nmap
:keymaps 'proced-mode-map
"za" #'proced-toggle-auto-update)
:display
("\\*Proced\\*"
(display-buffer-at-bottom)
(window-height . 0.25))
:init
(setq proced-auto-update-interval 0.5)
:config
(with-eval-after-load "evil-collection"
(evil-collection-proced-setup)))
#+end_src
* Calculator
Surprise, surprise Emacs comes with a calculator.
Greater surprise, this thing is over powered. It can perform the
following (and more):
- Matrix calculations
- Generalised calculus operations
- Equation solvers for n-degree multi-variable polynomials
- Embedded mode (check below)!
~calc-mode~ is a calculator system within Emacs that provides a
diverse array of mathematical operations. It uses reverse polish
notation to do calculations (though there is a standard infix
algebraic notation mode).
Embedded mode allows computation with the current buffer as the echo
area. This basically means I can compute stuff within a buffer
without invoking calc directly: $1 + 2\rightarrow_{\text{calc-embed}} 3$.
#+begin_src emacs-lisp
(use-package calc
:straight nil
:display
("*Calculator*"
(display-buffer-at-bottom)
(window-height . 0.18))
:general
(app-leader
"c" #'calc-dispatch)
(mode-leader
"c" #'calc-embedded)
:init
(setq calc-algebraic-mode t)
:config
(with-eval-after-load "evil-collection"
(evil-collection-calc-setup)))
#+end_src
** WAIT Calctex
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
~calc-mode~ also has a 3rd party package called ~calctex~. It renders
mathematical expressions within calc as if they were rendered in TeX.
You can also copy the expressions in their TeX forms, which is pretty
useful when writing a paper. I've set a very specific lock on this
repository as it's got quite a messy work-tree and this commit seems to
work for me given the various TeX utilities installed via Arch.
#+begin_src emacs-lisp
(use-package calctex
:after calc
:straight (calctex :type git :host github :repo "johnbcoughlin/calctex")
:hook (calc-mode-hook . calctex-mode))
#+end_src
* WAIT Ledger
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
#+begin_src emacs-lisp
(use-package ledger-mode
:defer t)
(use-package evil-ledger
:after ledger-mode)
#+end_src
* Zone
Of course Emacs has a cool screensaver software.
#+begin_src emacs-lisp
(use-package zone-matrix
:straight t
:commands (zone)
:general
(leader
"z" #'zone)
:init
(setq zone-programs
[zone-pgm-drip
zone-pgm-drip-fretfully
zone-pgm-martini-swan-dive
zone-pgm-stress
zone-pgm-random-life]))
#+end_src
* (Wo)man
Man pages are the user manuals for most software on Linux. Really
useful when writing code for Un*x systems, though they can be very
verbose.
2023-08-17: `Man-notify-method' is the reason the `:display' record
doesn't work here. I think it's to do with how Man pages are rendered
or something, but very annoying as it's a break from standards!
#+begin_src emacs-lisp
(use-package man
:demand t
:straight nil
:init
(setq Man-notify-method 'pushy)
:display
("^\\*Man.*"
(display-buffer-reuse-mode-window display-buffer-same-window))
:general
(file-leader
"m" #'man) ;; kinda like "find man page"
(nmmap
:keymaps 'Man-mode-map
"RET" #'man-follow))
#+end_src
* WAIT gif-screencast
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Little application that uses =gifsicle= to make essentially videos of
Emacs. Useful for demonstrating features.
#+begin_src emacs-lisp
(use-package gif-screencast
:straight t
:general
(app-leader
"x" #'gif-screencast-start-or-stop)
:init
(setq gif-screencast-output-directory (expand-file-name "~/Media/emacs/")))
#+end_src
* Image-mode
Image mode, for viewing images. Supports tons of formats, easy to use
and integrates slickly into image-dired. Of course,
#+begin_src emacs-lisp
(use-package image-mode
:straight nil
:general
(nmmap
:keymaps 'image-mode-map
"+" #'image-increase-size
"-" #'image-decrease-size
"p" #'image-animate
"P" #'image-animate-set-speed
"h" #'image-backward-hscroll
"j" #'image-next-line
"k" #'image-previous-line
"l" #'image-forward-hscroll))
#+end_src
* WAIT ERC
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
#+begin_src emacs-lisp
(use-package erc
:defer t
:init
(setq erc-server "irc.libera.chat"
erc-nick "oreodave"
erc-buffer-display "current"))
#+end_src
* MPV
Basically a porcelain over mpv via the IPC interface.
#+begin_src emacs-lisp
(use-package mpv
:defer t
:straight t
:config
(with-eval-after-load "org"
(defun org-mpv-complete-link (&optional arg)
(replace-regexp-in-string
"file:" "mpv:"
(org-link-complete-file arg)
t t))
(org-link-set-parameters "mpv"
:follow #'mpv-play :complete #'org-mpv-complete-link)))
#+end_src

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#+title: Core packages
#+author: Aryadev Chavali
#+description: The core components of my configuration
#+date: 2023-09-29
#+property: header-args:emacs-lisp :tangle core.el :comments link :results none
#+options: toc:nil
#+startup: noindent
Packages that are absolutely necessary for the rest of the
configuration. Window management, Keybindings or completion
frameworks; they're all done here.
* General
General provides a great solution for binding keys. It has evil and
use-package support so it fits nicely into configuration. In this
case, I define a "definer" for the "LEADER" keys. Leader is bound to
~SPC~ and it's functionally equivalent to the doom/spacemacs leader.
Local leader is bound to ~SPC ,~ and it's similar to doom/spacemacs
leader but doesn't try to fully assimilate the local-leader map,
instead just picking stuff I think is useful. This forces me to learn
only as many bindings as I find necessary; no more, no less.
I also define prefix leaders for differing applications. These are
quite self explanatory by their name and provide a nice way to
visualise all bindings under a specific heading just by searching the
code.
#+begin_src emacs-lisp
(use-package general
:straight t
:demand t
:config
;; General which key definitions for leaders
(general-def
:states '(normal motion)
"SPC" 'nil
"\\" '(nil :which-key "Local leader")
"SPC a" '(nil :which-key "Applications")
"SPC b" '(nil :which-key "Buffers")
"SPC c" '(nil :which-key "Code")
"SPC d" '(nil :which-key "Directories")
"SPC f" '(nil :which-key "Files")
"SPC i" '(nil :which-key "Insert")
"SPC m" '(nil :which-key "Modes")
"SPC r" '(nil :which-key "Tabs")
"SPC s" '(nil :which-key "Search")
"SPC t" '(nil :which-key "Shell")
"SPC q" '(nil :which-key "Quit/Literate"))
(general-create-definer leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC")
(general-create-definer local-leader
:states '(normal motion)
:prefix "\\")
(general-create-definer code-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC c")
(general-create-definer file-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC f")
(general-create-definer shell-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC t")
(general-create-definer tab-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC r")
(general-create-definer mode-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC m")
(general-create-definer app-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC a")
(general-create-definer search-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC s")
(general-create-definer buffer-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC b")
(general-create-definer quit-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC q")
(general-create-definer insert-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC i")
(general-create-definer dir-leader
:states '(normal motion)
:keymaps 'override
:prefix "SPC d")
(general-create-definer general-nmmap
:states '(normal motion))
(defalias 'nmmap #'general-nmmap)
(general-evil-setup t))
#+end_src
** Some binds for Emacs
Some bindings that I couldn't fit elsewhere easily.
#+begin_src emacs-lisp
(use-package emacs
:straight nil
:general
("C-x d" #'delete-frame)
(nmmap
"M-;" #'eval-expression
"g=" #'align-regexp
"C--" #'text-scale-decrease
"C-=" #'text-scale-increase
"C-+" #'text-scale-adjust)
(leader
"SPC" '(execute-extended-command :which-key "M-x")
"p" `(,project-prefix-map :which-key "Project")
"'" '(browse-url-emacs :which-key "Download URL to Emacs")
":" `(,(proc (interactive) (switch-to-buffer "*scratch*"))
:which-key "Switch to *scratch*")
"!" '(async-shell-command :which-key "Async shell command")
"h" '(help-command :which-key "Help"))
(mode-leader
"T" #'+oreo/switch-theme)
(code-leader
"F" `(,(proc (interactive) (find-file "~/Code/"))
:which-key "Open ~/Code/"))
(file-leader
"f" #'find-file
"F" #'find-file-other-frame
"s" #'save-buffer)
(quit-leader
"q" #'save-buffers-kill-terminal
"c" #'+literate/compile-config
"C" #'+literate/clean-config
"l" #'+literate/load-config)
(search-leader "i" #'imenu))
#+end_src
* Evil
My editor journey started off with Vim rather than Emacs, so my brain
has imprinted on its style. Thankfully Emacs is super extensible so
there exists a package (more of a supreme system) for porting Vim's
modal editing style to Emacs, called Evil (Emacs Vi Layer).
However there are a lot of packages in Vim that provide greater
functionality, for example 'vim-surround'. Emacs, by default, has
these capabilities but there are further packages which integrate them
into Evil.
** Evil core
Setup the evil package, with some opinionated keybindings:
- Switch ~evil-upcase~ and ~evil-downcase~ because I use ~evil-upcase~
more
- Switch ~evil-goto-mark~ and ~evil-goto-mark-line~ as I'd rather have
the global one closer to the home row
- Use 'T' character as an action for transposing objects
#+begin_src emacs-lisp
(use-package evil
:defer t
:hook (after-init-hook . evil-mode)
:general
(leader
"w" '(evil-window-map :which-key "Window")
"wT" #'window-swap-states
"wd" #'evil-window-delete)
(nmmap
"K" #'man
"TAB" #'evil-jump-item
"r" #'evil-replace-state
"zC" #'hs-hide-level
"zO" #'hs-show-all
"'" #'evil-goto-mark
"`" #'evil-goto-mark-line
"C-w" #'evil-window-map
"gu" #'evil-upcase
"gU" #'evil-downcase
"T" nil)
(nmmap
:infix "T"
"w" #'transpose-words
"c" #'transpose-chars
"s" #'transpose-sentences
"p" #'transpose-paragraphs
"e" #'transpose-sexps
"l" #'transpose-lines)
:init
(setq evil-want-keybinding nil
evil-split-window-below t
evil-vsplit-window-right t
evil-want-abbrev-expand-on-insert-exit t
evil-undo-system #'undo-tree))
#+end_src
** Evil surround
Evil surround is a port for vim-surround.
#+begin_src emacs-lisp
(use-package evil-surround
:after evil
:config
(global-evil-surround-mode))
#+end_src
** Evil commentary
Allows generalised commenting of objects easily.
#+begin_src emacs-lisp
(use-package evil-commentary
:after evil
:config
(evil-commentary-mode))
#+end_src
** Evil multi cursor
Setup for multi cursors in Evil mode. Don't let evil-mc setup it's own
keymap because it uses 'gr' as its prefix, which I don't like.
#+begin_src emacs-lisp
(use-package evil-mc
:after evil
:init
(defvar evil-mc-key-map (make-sparse-keymap))
:general
(nmap
:infix "gz"
"q" #'evil-mc-undo-all-cursors
"d" #'evil-mc-make-and-goto-next-match
"j" #'evil-mc-make-cursor-move-next-line
"k" #'evil-mc-make-cursor-move-prev-line
"j" #'evil-mc-make-cursor-move-next-line
"m" #'evil-mc-make-all-cursors
"z" #'evil-mc-make-cursor-here
"r" #'evil-mc-resume-cursors
"s" #'evil-mc-pause-cursors
"u" #'evil-mc-undo-last-added-cursor)
:config
;; (evil-mc-define-vars)
;; (evil-mc-initialize-vars)
;; (add-hook 'evil-mc-before-cursors-created #'evil-mc-pause-incompatible-modes)
;; (add-hook 'evil-mc-before-cursors-created #'evil-mc-initialize-active-state)
;; (add-hook 'evil-mc-after-cursors-deleted #'evil-mc-teardown-active-state)
;; (add-hook 'evil-mc-after-cursors-deleted #'evil-mc-resume-incompatible-modes)
;; (advice-add #'evil-mc-initialize-hooks :override #'ignore)
;; (advice-add #'evil-mc-teardown-hooks :override #'evil-mc-initialize-vars)
;; (advice-add #'evil-mc-initialize-active-state :before #'turn-on-evil-mc-mode)
;; (advice-add #'evil-mc-teardown-active-state :after #'turn-off-evil-mc-mode)
;; (add-hook 'evil-insert-state-entry-hook #'evil-mc-resume-cursors)
(global-evil-mc-mode))
#+end_src
** Evil collection
Provides a community based set of keybindings for most modes in
Emacs. I don't necessarily like all my modes having these bindings
though, as I may disagree with some. So I use it in a mode to mode basis.
#+begin_src emacs-lisp
(use-package evil-collection
:after evil)
#+end_src
** Evil number
Increment/decrement a number at point like Vim does, but use bindings
that don't conflict with Emacs default.
#+begin_src emacs-lisp
(use-package evil-numbers
:after evil
:general
(nmmap
"+" #'evil-numbers/inc-at-pt
"-" #'evil-numbers/dec-at-pt))
#+end_src
* Completion
Emacs is a text based interface. Completion is its bread and butter
in providing good user experience. By default Emacs provides
'completions-list' which produces a buffer of options which can be
searched and selected. We can take this further though!
Ido and Icomplete are packages distributed with Emacs to provide
greater completion interfaces. They utilise the minibuffer to create
a more interactive experience, allowing incremental searches and
option selection.
Ivy and Helm provide more modern interfaces, though Helm is quite
heavy. Ivy, on the other hand, provides an interface similar to Ido
with less clutter and better customisation options.
** Ivy
Ivy is a completion framework for Emacs, and my preferred one. It has
a great set of features with little to no pain with setting up.
*** Ivy Core
Setup for ivy, in preparation for counsel. Turn on ivy-mode just
after init.
Setup vim-like bindings for the minibuffer ("M-(j|k)" for down|up the
selection list).
#+begin_src emacs-lisp
(use-package ivy
:defer t
:hook (after-init-hook . ivy-mode)
:general
(general-def
:keymaps 'ivy-minibuffer-map
"C-j" #'ivy-yank-symbol
"M-j" #'ivy-next-line-or-history
"M-k" #'ivy-previous-line-or-history
"C-SPC" #'ivy-occur)
(general-def
:keymaps 'ivy-switch-buffer-map
"M-j" #'ivy-next-line-or-history
"M-k" #'ivy-previous-line-or-history)
(nmap
:keymaps '(ivy-occur-mode-map ivy-occur-grep-mode-map)
"RET" #'ivy-occur-press-and-switch
"J" #'ivy-occur-press
"gr" #'ivy-occur-revert-buffer
"q" #'quit-window
"D" #'ivy-occur-delete-candidate
"W" #'ivy-wgrep-change-to-wgrep-mode
"{" #'compilation-previous-file
"}" #'compilation-next-file)
:init
(with-eval-after-load "evil"
(evil-set-initial-state 'ivy-occur-mode 'normal)
(evil-set-initial-state 'ivy-occur-grep-mode 'normal))
(with-eval-after-load "amx"
(setq amx-backend 'ivy))
(setq ivy-height 10
ivy-wrap t
ivy-fixed-height-minibuffer t
ivy-use-virtual-buffers nil
ivy-virtual-abbreviate 'full
ivy-on-del-error-function #'ignore
ivy-use-selectable-prompt t)
:config
(require 'counsel nil t))
#+end_src
*** Counsel
Setup for counsel. Load after ivy and helpful.
#+begin_src emacs-lisp
(use-package counsel
:defer t
:general
(search-leader
"s" #'counsel-grep-or-swiper
"R" #'counsel-rg)
(file-leader
"r" #'counsel-recentf
"P" (proc (interactive)
(with-current-buffer (find-file-noselect
(concat user-emacs-directory "config.org"))
(counsel-git))))
(insert-leader
"c" #'counsel-unicode-char)
(general-def
[remap describe-bindings] #'counsel-descbinds
[remap load-theme] #'counsel-load-theme)
:config
(setq ivy-initial-inputs-alist '((org-insert-link . "^"))
counsel-describe-function-function #'helpful-callable
counsel-describe-variable-function #'helpful-variable
counsel-grep-swiper-limit 1500000
ivy-re-builders-alist '((swiper . ivy--regex-plus)
(counsel-grep-or-swiper . ivy--regex-plus)
(counsel-rg . ivy--regex-plus)
(t . ivy--regex-ignore-order)))
(counsel-mode))
#+end_src
*** WAIT Ivy posframe
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
This makes ivy minibuffer windows use child frames.
Very nice eyecandy, but can get kinda annoying.
#+begin_src emacs-lisp
(use-package ivy-posframe
:hook (ivy-mode-hook . ivy-posframe-mode)
:straight t
:init
(setq ivy-posframe-parameters
'((left-fringe . 0)
(right-fringe . 0)
(background-color . "grey7")))
(setq ivy-posframe-display-functions-alist
'((t . ivy-posframe-display-at-window-center))))
#+end_src
*** WAIT Counsel etags
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Counsel etags allows me to search generated tag files for tags. I
already have a function defined to generate the tags, so it's just
searching them which I find to be a bit of a hassle, and where this
package comes in.
This has been replaced by [[*xref][xref]] which is inbuilt.
#+begin_src emacs-lisp
(use-package counsel-etags
:after counsel
:general
(search-leader
"t" #'counsel-etags-find-tag))
#+end_src
** WAIT Ido
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Ido is a very old completion package that still works great to this
day. Though it is limited in its scope (and may thus be called a
completion add-on rather than a full on framework), it is still a very
powerful package. With the use of ido-completing-read+, it may be used
similarly to a fully fledged completion framework.
#+begin_src emacs-lisp
(use-package ido
:demand t
:general
(general-def
:keymaps '(ido-buffer-completion-map
ido-file-completion-map
ido-file-dir-completion-map
ido-common-completion-map)
(kbd "M-j") #'ido-next-match
(kbd "M-k") #'ido-prev-match
(kbd "C-x o") #'evil-window-up)
:init
(setq ido-decorations
(list "{" "}" " \n" " ..." "[" "]" " [No match]" " [Matched]"
" [Not readable]" " [Too big]" " [Confirm]")
completion-styles '(flex partial-completion intials emacs22))
(setq-default ido-enable-flex-matching t
ido-enable-dot-prefix t
ido-enable-regexp nil)
(with-eval-after-load "magit"
(setq magit-completing-read-function 'magit-ido-completing-read))
:config
(ido-mode)
(ido-everywhere))
#+end_src
*** Ido ubiquitous
Ido completing-read+ is a package that extends the ido package to work
with more text based functions.
#+begin_src emacs-lisp
(use-package ido-completing-read+
:after ido
:config
(ido-ubiquitous-mode +1))
#+end_src
** Amx
Amx is a fork of Smex that works to enhance the
execute-extended-command interface. It also provides support for ido
or ivy (though I'm likely to use ido here) and allows you to switch
between them.
It provides a lot of niceties such as presenting the key bind when
looking for a command.
#+begin_src emacs-lisp
(use-package amx
:config
(amx-mode))
#+end_src
** Orderless
Orderless sorting method for completion, probably one of the best
things ever.
#+begin_src emacs-lisp
(use-package orderless
:after (ivy ido)
:config
(setf (alist-get t ivy-re-builders-alist) 'orderless-ivy-re-builder))
#+end_src
** Completions-list
In case I ever use the completions list, some basic commands to look
around.
#+begin_src emacs-lisp
(use-package simple
:straight nil
:general
(nmmap
:keymaps 'completion-list-mode-map
"l" #'next-completion
"h" #'previous-completion
"ESC" #'delete-completion-window
"q" #'quit-window
"RET" #'choose-completion)
:config
(with-eval-after-load "evil"
(setq evil-emacs-state-modes (cl-remove-if
#'(lambda (x) (eq 'completions-list-mode x))
evil-emacs-state-modes))
(add-to-list 'evil-normal-state-modes 'completions-list-mode)))
#+end_src
** Company
Company is the auto complete system I use. I don't like having heavy
setups for company as it only makes it slower to use. In this case,
just setup some evil binds for company.
#+begin_src emacs-lisp
(use-package company
:straight t
:hook
(prog-mode-hook . company-mode)
(eshell-mode-hook . company-mode)
:general
(imap
"C-SPC" #'company-complete
"M-j" #'company-select-next
"M-k" #'company-select-previous))
#+end_src
* Pretty symbols
Prettify symbols mode allows for users to declare 'symbols' that
replace text within certain modes. Though this may seem like useless
eye candy, it has aided my comprehension and speed of recognition
(recognising symbols is easier than words).
Essentially a use-package keyword which makes declaring pretty symbols
for language modes incredibly easy. Checkout my [[C/C++][C/C++]] configuration
for an example.
#+begin_src emacs-lisp
(use-package prog-mode
:straight nil
:init
(setq prettify-symbols-unprettify-at-point t)
:config
(with-eval-after-load "use-package-core"
(add-to-list 'use-package-keywords ':pretty)
(defun use-package-normalize/:pretty (_name-symbol _keyword args)
args)
(defun use-package-handler/:pretty (name _keyword args rest state)
(use-package-concat
(use-package-process-keywords name rest state)
(mapcar
#'(lambda (arg)
(let ((mode (car arg))
(rest (cdr arg)))
`(add-hook
',mode
#'(lambda nil
(setq prettify-symbols-alist ',rest)
(prettify-symbols-mode)))))
args)))))
#+end_src
Here's a collection of keywords and possible associated symbols for
any prog language of choice. Mostly for reference and copying.
#+begin_example
("null" . "Ø")
("list" . "")
("string" . "𝕊")
("true" . "")
("false" . "⊥")
("char" . "")
("int" . "")
("float" . "")
("!" . "¬")
("&&" . "∧")
("||" . "")
("for" . "∀")
("return" . "⟼")
("print" . "")
("lambda" . "λ")
#+end_example
* Window management
Emacs' default window management is quite bad, eating other windows on
a whim and not particularly caring for the current window setup.
Thankfully you can change this via the ~display-buffer-alist~ which
matches buffer names with how the window for the buffer should be
displayed. I add a use-package keyword to make ~display-buffer-alist~
records within a use-package call.
I have no idea whether it's optimal AT ALL, but it works for me.
2024-04-23: Found this option ~switch-to-buffer-obey-display-actions~
which makes manual buffer switches obey the same constraints via
~display-buffer-alist~ as creating the buffer automatically.
#+begin_src emacs-lisp
(use-package window
:straight nil
:general
(buffer-leader
"b" #'switch-to-buffer
"d" #'kill-current-buffer
"K" #'kill-buffer
"j" #'next-buffer
"k" #'previous-buffer
"D" '(+oreo/clean-buffer-list :which-key "Kill most buffers"))
:init
(setq switch-to-buffer-obey-display-actions t)
(with-eval-after-load "use-package-core"
(add-to-list 'use-package-keywords ':display)
(defun use-package-normalize/:display (_name-symbol _keyword args)
args)
(defun use-package-handler/:display (name _keyword args rest state)
(use-package-concat
(use-package-process-keywords name rest state)
(mapcar
#'(lambda (arg)
`(add-to-list 'display-buffer-alist
',arg))
args)))))
#+end_src
** Some display records
Using the ~:display~ keyword, setup up some ~display-buffer-alist~
records. This is mostly for packages that aren't really configured
(like [[info:woman][woman]]) or packages that were configured before
(like [[Ivy][Ivy]]).
#+begin_src emacs-lisp
(use-package window
:straight nil
:defer t
:display
("\\*Process List\\*"
(display-buffer-at-bottom)
(window-height . 0.25))
("\\*\\(Ido \\)?Completions\\*"
(display-buffer-in-side-window)
(window-height . 0.25)
(side . bottom))
("\\*ivy-occur.*"
(display-buffer-at-bottom)
(window-height . 0.25))
("\\*Async Shell Command\\*"
(display-buffer-at-bottom)
(window-height . 0.25)))
#+end_src
* Tabs
Tabs in vscode are just like buffers in Emacs but way slower and
harder to use. Tabs in Emacs are essentially window layouts, similar
to instances in Tmux. With this setup I can use tabs quite
effectively.
#+begin_src emacs-lisp
(use-package tab-bar
:defer t
:straight nil
:init
(setq tab-bar-show 1)
:config
(tab-bar-mode)
:general
(tab-leader
"t" #'tab-switch
"j" #'tab-next
"k" #'tab-previous
"h" #'tab-move-to
"l" #'tab-move
"n" #'tab-new
"c" #'tab-close
"d" #'tab-close
"f" #'tab-detach
"w" #'tab-window-detach
"r" #'tab-rename)
(mode-leader
"t" #'toggle-tab-bar-mode-from-frame))
#+end_src
* Auto typing
Snippets are a pretty nice way of automatically inserting code. Emacs
provides a ton of packages by default to do this, but there are great
packages to install as well.
Abbrevs and skeletons make up a popular solution within Emacs default.
Abbrevs are for simple expressions wherein the only input is the key,
and the output is some Elisp function. They provide a lot of inbuilt
functionality and are quite useful. Skeletons, on the other hand, are
for higher level insertions
The popular external solution is Yasnippet. Yasnippet is a great
package for snippets, which I use heavily in programming and org-mode.
I setup here the global mode for yasnippet and a collection of
snippets for ease of use.
** Abbrevs
Just define a few abbrevs for various date-time operations. Also
define a macro that will assume a function for the expansion, helping
with abstracting a few things away.
#+begin_src emacs-lisp
(use-package abbrev
:straight nil
:hook
(prog-mode-hook . abbrev-mode)
(text-mode-hook . abbrev-mode)
:init
(defmacro +abbrev/define-abbrevs (abbrev-table &rest abbrevs)
`(progn
,@(mapcar #'(lambda (abbrev)
`(define-abbrev
,abbrev-table
,(car abbrev)
""
(proc (insert ,(cadr abbrev)))))
abbrevs)))
(setq save-abbrevs nil)
:config
(+abbrev/define-abbrevs
global-abbrev-table
("sdate"
(format-time-string "%Y-%m-%d" (current-time)))
("stime"
(format-time-string "%H:%M:%S" (current-time)))
("sday"
(format-time-string "%A" (current-time)))
("smon"
(format-time-string "%B" (current-time)))))
#+end_src
** WAIT Skeletons
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Defines a macro for generating a skeleton + abbrev for a given mode.
Doesn't sanitise inputs because I assume callers are /rational/ actors
who would *only* use this for their top level Emacs config.
Honestly didn't find much use for this currently, so disabled.
#+begin_src emacs-lisp
(use-package skeleton
:straight nil
:after abbrev
:config
(defmacro +autotyping/gen-skeleton-abbrev (mode abbrev &rest skeleton)
(let* ((table (intern (concat (symbol-name mode) "-abbrev-table")))
(skeleton-name (intern (concat "+skeleton/" (symbol-name mode) "/" abbrev))))
`(progn
(define-skeleton
,skeleton-name
""
,@skeleton)
(define-abbrev ,table
,abbrev
""
',skeleton-name)))))
#+end_src
** Auto insert
Allows inserting text immediately upon creating a new buffer with a
given name. Supports skeletons for inserting text. To make it easier
for later systems to define their own auto inserts, I define a
~use-package~ keyword ~auto-insert~ which allows one to define an
entry for ~auto-insert-alist~.
#+begin_src emacs-lisp
(use-package autoinsert
:straight nil
:demand t
:hook (after-init-hook . auto-insert-mode)
:config
(with-eval-after-load "use-package-core"
(add-to-list 'use-package-keywords ':auto-insert)
(defun use-package-normalize/:auto-insert (_name-symbol _keyword args)
args)
(defun use-package-handler/:auto-insert (name _keyword args rest state)
(use-package-concat
(use-package-process-keywords name rest state)
(mapcar
#'(lambda (arg)
`(add-to-list
'auto-insert-alist
',arg))
args)))))
#+end_src
** Yasnippet default
Look at the snippets [[file:../.config/yasnippet/snippets/][folder]]
for all snippets I've got.
#+begin_src emacs-lisp
(use-package yasnippet
:defer t
:hook
(prog-mode-hook . yas-minor-mode)
(text-mode-hook . yas-minor-mode)
:general
(insert-leader
"i" #'yas-insert-snippet)
:config
(yas-load-directory (no-littering-expand-etc-file-name "yasnippet/snippets")))
#+end_src
** WAIT Hydra
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Hydra is a great package by =abo-abo= (yes the same guy who made ivy
and swiper) and I hope to use it later on in the config. There are
two use-package declarations here: one for ~hydra~ itself, and the
other for ~use-package-hydra~ which provides the keyword ~:hydra~ in
use-package declarations.
#+begin_src emacs-lisp
(use-package hydra
:straight t)
(use-package use-package-hydra
:straight t)
#+end_src

View File

@@ -55,10 +55,8 @@
;; Files
(defconst +literate/org-files
(+literate/filter
#'+literate/org-p
(mapcar #'(lambda (file) (concat user-emacs-directory file))
(cddr (directory-files user-emacs-directory)))))
(mapcar #'(lambda (x) (expand-file-name (concat user-emacs-directory x)))
(list "config.org")))
(defconst +literate/el-init-files
`(,(concat user-emacs-directory "early-init.el")

View File

@@ -1,821 +0,0 @@
#+title: Programming language configuration
#+author: Aryadev Chavali
#+description: Description
#+date: 2024-04-16
#+property: header-args:emacs-lisp :tangle lang.el :comments link :results none
#+options: toc:nil
#+startup: noindent
* Makefile
Defines an auto-insert for Makefiles. Assumes C but it's very easy to
change it for C++.
#+begin_src emacs-lisp
(use-package emacs
:auto-insert
(("[mM]akefile\\'" . "Makefile skeleton")
""
"CC=gcc
CFLAGS=-Wall -Wextra -Werror -Wswitch-enum -ggdb -fsanitize=address -fsanitize=undefined -std=c11
LIBS=
ARGS=
OUT=main.out
SRC=src
DIST=build
CODE=$(addprefix $(SRC)/, ) # add source files here
OBJECTS=$(CODE:$(SRC)/%.c=$(DIST)/%.o)
DEPDIR:=$(DIST)/dependencies
DEPFLAGS=-MT $@ -MMD -MP -MF
DEPS:=$(CODE:$(SRC)/%.c=$(DEPDIR):%.d) $(DEPDIR)/main.d
.PHONY: all
all: $(OUT)
$(OUT): $(DIST)/$(OUT)
$(DIST)/$(OUT): $(OBJECTS) $(DIST)/main.o | $(DIST)
$(CC) $(CFLAGS) $^ -o $@ $(LIBS)
$(DIST)/%.o: $(SRC)/%.c | $(DIST) $(DEPDIR)
$(CC) $(CFLAGS) $(DEPFLAGS) $(DEPDIR)/$*.d -c $< -o $@ $(LIBS)
.PHONY: run
run: $(DIST)/$(OUT)
./$^ $(ARGS)
.PHONY:
clean:
rm -rfv $(DIST)/*
$(DIST):
mkdir -p $(DIST)
$(DEPDIR):
mkdir -p $(DEPDIR)
-include $(DEPS)
"
_))
#+end_src
* PDF
I use PDFs mostly for reading reports or papers. Though Emacs isn't
my preferred application for viewing PDFs (I highly recommend
[[https://pwmt.org/projects/zathura/][Zathura]]), similar to most
things with Emacs, having a PDF viewer builtin can be a very useful
asset.
For example if I were editing an org document which I was eventually
compiling into a PDF, my workflow would be much smoother with a PDF
viewer within Emacs that I can open on another pane.
** WAIT PDF tools
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
~pdf-tools~ provides the necessary functionality for viewing PDFs.
There is no proper PDF viewing without this package.
~evil-collection~ provides a setup for this mode, so use that.
#+begin_src emacs-lisp
(use-package pdf-tools
:mode ("\\.[pP][dD][fF]\\'" . pdf-view-mode)
:straight t
:display
("^.*pdf$"
(display-buffer-same-window)
(inhibit-duplicate-buffer . t))
:config
(pdf-tools-install-noverify)
(with-eval-after-load "evil-collection"
(evil-collection-pdf-setup)))
#+end_src
** WAIT PDF grep
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
PDF grep is a Linux tool that allows for searches against the text
inside of PDFs similar to standard grep. This cannot be performed by
standard grep due to how PDFs are encoded; they are not a clear text
format.
#+begin_src emacs-lisp
(use-package pdfgrep
:after pdf-tools
:hook (pdf-view-mode-hook . pdfgrep-mode)
:general
(nmap
:keymaps 'pdf-view-mode-map
"M-g" #'pdfgrep))
#+end_src
* WAIT SQL
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
The default SQL package provides support for connecting to common
database types (sqlite, mysql, etc) for auto completion and query
execution. I don't use SQL currently but whenever I need it it's
there.
#+begin_src emacs-lisp
(use-package sql
:defer t
:straight nil
:init
(setq sql-display-sqli-buffer-function nil))
#+end_src
* WAIT Ada
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Check out [[file:elisp/ada-mode.el][ada-mode]], my custom ~ada-mode~
that replaces the default one. This mode just colourises stuff, and
uses eglot and a language server to do the hard work.
#+begin_src emacs-lisp
(use-package ada-mode
:straight nil
:load-path "elisp/"
:defer t
:config
(with-eval-after-load "eglot"
(add-hook 'ada-mode-hook #'eglot)))
#+end_src
* NHexl
Hexl-mode is the inbuilt package within Emacs to edit hex and binary
format buffers. There are a few problems with hexl-mode though,
including an annoying prompt on /revert-buffer/.
Thus, nhexl-mode! It comes with a few other improvements. Check out
the [[https://elpa.gnu.org/packages/nhexl-mode.html][page]] yourself.
#+begin_src emacs-lisp
(use-package nhexl-mode
:straight t
:mode ("\\.bin" "\\.out"))
#+end_src
* C/C++
Setup for C and C++ modes, using Emacs' default package: cc-mode.
** cc-mode
Tons of stuff, namely:
+ ~auto-fill-mode~ for 80 char limit
+ Some keybindings to make evil statement movement is easy
+ Lots of pretty symbols
+ Indenting options and a nice (for me) code style for C (though
aggressive indent screws with this a bit)
+ Auto inserts to get a C file going
#+begin_src emacs-lisp
(use-package cc-mode
:defer t
:hook
(c-mode-hook . auto-fill-mode)
(c++-mode-hook . auto-fill-mode)
:general
(:keymaps '(c-mode-map c++-mode-map)
:states '(normal motion visual)
"(" #'c-beginning-of-statement
")" #'c-end-of-statement)
:pretty
(c-mode-hook
("puts" . "φ")
("fputs" . "ϕ")
("printf" . "ω")
("fprintf" . "Ω")
("NULL" . "Ø")
("true" . "")
("false" . "")
("!" . "¬")
("&&" . "")
("||" . "")
("for" . "")
("return" . ""))
(c++-mode-hook
("nullptr" . "Ø")
("string" . "𝕊")
("vector" . "")
("puts" . "φ")
("fputs" . "ϕ")
("printf" . "ω")
("fprintf" . "Ω")
("NULL" . "Ø")
("true" . "")
("false" . "")
("!" . "¬")
("&&" . "")
("||" . "")
("for" . "")
("return" . ""))
:init
(setq-default c-basic-offset 2)
(setq-default c-auto-newline nil)
(setq-default c-default-style '((other . "user")))
(defun +cc/copyright-notice ()
(let* ((lines (split-string (+license/copyright-notice) "\n"))
(copyright-line (car lines))
(rest (cdr lines)))
(concat
"* "
copyright-line
"\n"
(mapconcat
#'(lambda (x)
(if (string= x "")
""
(concat " * " x)))
rest
"\n"))))
:auto-insert
(("\\.c\\'" . "C skeleton")
""
"/" (+cc/copyright-notice) "\n\n"
" * Created: " (format-time-string "%Y-%m-%d") "\n"
" * Author: " user-full-name "\n"
" * Description: " _ "\n"
" */\n"
"\n")
(("\\.cpp\\'" "C++ skeleton")
""
"/" (+cc/copyright-notice) "\n\n"
" * Created: " (format-time-string "%Y-%m-%d") "\n"
" * Author: " user-full-name "\n"
" * Description: " _ "\n"
" */\n"
"\n")
(("\\.\\([Hh]\\|hh\\|hpp\\|hxx\\|h\\+\\+\\)\\'" . "C / C++ header")
(replace-regexp-in-string "[^A-Z0-9]" "_"
(string-replace "+" "P"
(upcase
(file-name-nondirectory buffer-file-name))))
"/" (+cc/copyright-notice) "\n\n"
" * Created: " (format-time-string "%Y-%m-%d") "\n"
" * Author: " user-full-name "\n"
" * Description: " _ "\n"
" */\n\n"
"#ifndef " str n "#define " str "\n\n" "\n\n#endif")
:config
(c-add-style
"user"
'((c-basic-offset . 2)
(c-comment-only-line-offset . 0)
(c-hanging-braces-alist (brace-list-open)
(brace-entry-open)
(substatement-open after)
(block-close . c-snug-do-while)
(arglist-cont-nonempty))
(c-cleanup-list brace-else-brace)
(c-offsets-alist
(statement-block-intro . +)
(substatement-open . 0)
(access-label . -)
(inline-open . 0)
(label . 0)
(statement-cont . +)))))
#+end_src
** Clang format
Clang format comes inbuilt with clang, so download that before using
this. Formats C/C++ files depending on a format (checkout the Clang
format [[file:~/Dotfiles/ClangFormat/.clang-format][config file]] in
my dotfiles).
#+begin_src emacs-lisp
(use-package clang-format
:straight nil
:load-path "/usr/share/clang/"
:after cc-mode
:commands (+code/clang-format-region-or-buffer
clang-format-mode)
;;; 2024-04-24: disabled as it's annoying on projects where a
;;; .clang-format isn't defined. Furthermore, does it make sense
;;; for *every* file you open and edit to have a format function run
;;; right after? seems a bit slow.
;; :hook
;; (c-mode-hook . clang-format-mode)
;; (c++-mode-hook . clang-format-mode)
:general
(code-leader
:keymaps '(c-mode-map c++-mode-map)
"f" #'+code/clang-format-region-or-buffer)
:config
(define-minor-mode clang-format-mode
"On save formats the current buffer via clang-format."
:lighter nil
(let ((save-func (proc (interactive)
(clang-format-buffer))))
(if clang-format-mode
(add-hook 'after-save-hook save-func nil t)
(remove-hook 'after-save-hook save-func t))))
(defun +code/clang-format-region-or-buffer ()
(interactive)
(if (mark)
(clang-format-region (region-beginning) (region-end))
(clang-format-buffer))))
#+end_src
** cc org babel
To ensure org-babel executes language blocks of C/C++, I need to load
it as an option in ~org-babel-load-languages~.
#+begin_src emacs-lisp
(use-package org
:after cc-mode
:init
(org-babel-do-load-languages
'org-babel-load-languages
'((C . t))))
#+end_src
* WAIT D
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
D is a systems level programming language with C-style syntax. I
think it has some interesting ideas such as a toggleable garbage
collector. Here I just install the D-mode package, enable ~org-babel~
execution of d-mode blocks and alias ~D-mode~ with ~d-mode~.
#+begin_src emacs-lisp
(use-package d-mode
:defer t
:straight t
:config
(fset 'D-mode 'd-mode)
(with-eval-after-load "org-mode"
(setf (alist-get 'd org-babel-load-languages) t)))
#+end_src
* WAIT Rust
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
#+begin_src emacs-lisp
(use-package rust-mode
:straight t
:general
(code-leader
:keymaps 'rust-mode-map
"f" #'rust-format-buffer)
(local-leader
:keymaps 'rust-mode-map
"c" #'rust-run-clippy)
:init
(setq rust-format-on-save t)
(with-eval-after-load "eglot"
(add-to-list 'eglot-server-programs '(rust-mode "rust-analyzer"))))
#+end_src
* WAIT Racket
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
A scheme with lots of stuff inside it. Using it for a language design
book so it's useful to have some Emacs binds for it.
#+begin_src emacs-lisp
(use-package racket-mode
:straight t
:hook (racket-mode-hook . racket-xp-mode)
:display
("\\*Racket.*"
(display-buffer-at-bottom)
(window-height . 0.25))
:init
(setq racket-documentation-search-location 'local)
:general
(nmap
:keymaps 'racket-describe-mode-map
"q" #'quit-window)
(nmap
:keymaps 'racket-mode-map
"gr" #'racket-eval-last-sexp)
(local-leader
:keymaps '(racket-mode-map racket-repl-mode-map)
"d" #'racket-repl-describe)
(local-leader
:keymaps 'racket-mode-map
"r" #'racket-run
"i" #'racket-repl
"e" #'racket-send-definition
"sr" #'racket-send-region
"sd" #'racket-send-definition))
#+end_src
* WAIT CSharp
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
Haven't used C# in a while, but Emacs is alright for it with
omnisharp.
#+begin_src emacs-lisp
(use-package csharp-mode
:defer t
:pretty
(csharp-mode-hook
("null" . "")
("string" . "𝕊")
("List" . "")
("WriteLine" . "φ")
("Write" . "ω")
("true" . "")
("false" . "")
("!" . "¬")
("&&" . "")
("||" . "")
("for" . "")
("return" . "")))
#+end_src
* WAIT Java
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
I kinda dislike Java, but if necessary I will code in it. Just setup
a style and some pretty symbols. You can use LSP to get cooler
features to be fair.
#+begin_src emacs-lisp
(use-package ob-java
:straight nil
:defer t
:pretty
(java-mode-hook
("println" . "φ")
("printf" . "ω")
("null" . "Ø")
("true" . "")
("false" . "")
("!" . "¬")
("&&" . "")
("||" . "")
("for" . "")
("return" . ""))
:config
(with-eval-after-load "cc-mode"
(c-add-style
"java"
'((c-basic-offset . 4)
(c-comment-only-line-offset 0 . 0)
(c-offsets-alist
(inline-open . 0)
(topmost-intro-cont . +)
(statement-block-intro . +)
(knr-argdecl-intro . 5)
(substatement-open . 0)
(substatement-label . +)
(label . +)
(statement-case-open . +)
(statement-cont . +)
(arglist-intro . c-lineup-arglist-intro-after-paren)
(arglist-close . c-lineup-arglist)
(brace-list-intro first c-lineup-2nd-brace-entry-in-arglist c-lineup-class-decl-init-+ +)
(access-label . 0)
(inher-cont . c-lineup-java-inher)
(func-decl-cont . c-lineup-java-throws))))
(add-to-list 'c-default-style '(java-mode . "java")))
(with-eval-after-load "abbrev"
(define-abbrev-table 'java-mode-abbrev-table nil)
(add-hook 'java-mode-hook
(proc (setq-local local-abbrev-table java-mode-abbrev-table)))))
#+end_src
* Haskell
Haskell is a static lazy functional programming language (what a
mouthful). It's quite a beautiful language and really learning it will
change the way you think about programming. However, my preferred
functional language is still unfortunately Lisp so no extra brownie
points there.
Here I configure the REPL for Haskell via the
~haskell-interactive-mode~. I also load my custom package
[[file:elisp/haskell-multiedit.el][haskell-multiedit]] which allows a
user to create temporary ~haskell-mode~ buffers that, upon completion,
will run in the REPL. Even easier than making your own buffer.
#+begin_src emacs-lisp
(use-package haskell-mode
:hook
(haskell-mode-hook . haskell-indentation-mode)
(haskell-mode-hook . interactive-haskell-mode)
:custom
(haskell-interactive-prompt "[λ] ")
(haskell-interactive-prompt-cont "{λ} ")
(haskell-interactive-popup-errors nil)
(haskell-stylish-on-save nil)
(haskell-process-type 'auto)
:general
(shell-leader
"h" #'haskell-interactive-bring)
(local-leader
:keymaps 'haskell-mode-map
"l" #'haskell-process-load-or-reload
"t" #'haskell-process-do-type)
(local-leader
:keymaps 'haskell-interactive-mode-map
"c" #'haskell-interactive-mode-clear)
(imap
:keymaps 'haskell-interactive-mode-map
"M-k" #'haskell-interactive-mode-history-previous
"M-j" #'haskell-interactive-mode-history-next)
:display
("\\*haskell.**\\*"
(display-buffer-at-bottom)
(window-height . 0.25))
:config
(load (concat user-emacs-directory "elisp/haskell-multiedit.el")))
#+end_src
* Python
Works well for python. If you have ~pyls~ it should be on your path, so
just run eglot if you need. But an LSP server is not necessary for a
lot of my time in python. Here I also setup org-babel for python
source code blocks.
#+begin_src emacs-lisp
(use-package python
:defer t
:straight nil
:pretty
(python-mode-hook
("None" . "Ø")
("list" . "")
("List" . "")
("str" . "𝕊")
("True" . "")
("False" . "")
("!" . "¬")
("&&" . "")
("||" . "")
("for" . "")
("print" . "φ")
("lambda" . "λ")
("return" . "")
("yield" . ""))
:init
(setq python-indent-offset 4)
:config
(with-eval-after-load "org-mode"
(setf (alist-get 'python org-babel-load-languages) t)))
#+end_src
** Python shell
Setup for python shell, including a toggle option
#+begin_src emacs-lisp
(use-package python
:straight nil
:commands +python/toggle-repl
:general
(shell-leader
"p" #'run-python)
:display
("\\*Python\\*"
(display-buffer-at-bottom)
(window-height . 0.25)))
#+end_src
* YAML
YAML is a data language which is useful for config files.
#+begin_src emacs-lisp
(use-package yaml-mode
:straight t)
#+end_src
* HTML/CSS/JS
Firstly, web mode for consistent colouring of syntax.
#+begin_src emacs-lisp
(use-package web-mode
:mode ("\\.html" . web-mode)
:mode ("\\.js" . web-mode)
:mode ("\\.css" . web-mode)
:custom
((web-mode-code-indent-offset 2)
(web-mode-markup-indent-offset 2)
(web-mode-css-indent-offset 2)))
#+end_src
** Emmet
Emmet for super speed code writing.
#+begin_src emacs-lisp
(use-package emmet-mode
:hook (web-mode-hook . emmet-mode)
:general
(imap
:keymaps 'emmet-mode-keymap
"TAB" #'emmet-expand-line
"M-j" #'emmet-next-edit-point
"M-k" #'emmet-prev-edit-point))
#+end_src
** HTML Auto insert
#+begin_src emacs-lisp
(use-package web-mode
:defer t
:auto-insert
(("\\.html\\'" . "HTML Skeleton")
""
"<!doctype html>
<html lang=''>
<head>
<meta charset='utf-8'>
<meta http-equiv='x-ua-compatible' content='ie=edge'>
<title>"(read-string "Enter title: ") | """</title>
<meta name='description' content='" (read-string "Enter description: ") | "" "'>
<meta name='author' content='"user-full-name"'/>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<link rel='apple-touch-icon' href='/apple-touch-icon.png'>
<link rel='shortcut icon' href='/favicon.ico'/>
<!-- Place favicon.ico in the root directory -->
</head>
<body>
<!--[if lt IE 8]>
<p class='browserupgrade'>
You are using an <strong>outdated</strong> browser. Please
<a href='http://browsehappy.com/'>upgrade your browser</a> to improve
your experience.
</p>
<![endif]-->
"
_
" </body>
</html>"))
#+end_src
** WAIT Typescript
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
A child language of javascript which compiles to it.
#+begin_src emacs-lisp
(use-package typescript-mode
:defer t
:init
(setq typescript-indent-level 2))
#+end_src
* Common Lisp
Common Lisp is a dialect of Lisp, the most /common/ one around. Emacs
comes with builtin Lisp support of course, but a REPL would be nice.
** WAIT Sly
Enter /SLY/. Sly is a fork of /SLIME/ and is *mandatory* for lisp
development on Emacs.
#+begin_src emacs-lisp
(use-package sly
:straight t
:init
(setq inferior-lisp-program "sbcl")
:display
("\\*sly-db"
(display-buffer-at-bottom)
(window-height . 0.5))
("\\*sly-"
(display-buffer-at-bottom)
(window-height . 0.25))
:config
(evil-set-initial-state 'sly-db-mode 'emacs)
(with-eval-after-load "org"
(setq-default org-babel-lisp-eval-fn #'sly-eval))
(with-eval-after-load "company"
(add-hook 'sly-mrepl-hook #'company-mode))
:general
(shell-leader
"s" #'sly-mrepl)
(nmap
:keymaps '(lisp-mode-map sly-mrepl-mode-map)
"gr" #'sly-eval-buffer
"gd" #'sly-edit-definition
"gR" #'sly-who-calls)
(local-leader
:keymaps '(lisp-mode-map sly-mrepl-mode-map)
"s" #'+shell/toggle-sly
"c" #'sly-compile-file
"a" #'sly-apropos
"d" #'sly-describe-symbol
"D" #'sly-documentation-lookup
"S" #'sly-mrepl-sync
"E" #'sly-eval-defun)
(local-leader
:keymaps 'lisp-mode-map
:infix "e"
"b" #'sly-eval-buffer
"e" #'sly-eval-last-expression
"f" #'sly-eval-defun
"r" #'sly-eval-region)
(nmap
:keymaps 'sly-inspector-mode-map
"q" #'sly-inspector-quit))
#+end_src
** Emacs lisp
#+begin_src emacs-lisp
(use-package elisp-mode
:straight nil
:pretty
(lisp-mode-hook
("lambda" . "λ")
("t" . "")
("nil" . "Ø")
("and" . "")
("or" . "")
("defun" . "ƒ")
("for" . "")
("mapc" . "")
("mapcar" . ""))
(emacs-lisp-mode-hook
("lambda" . "λ")
("t" . "")
("nil" . "Ø")
("and" . "")
("or" . "")
("defun" . "ƒ")
("for" . "")
("mapc" . "")
("mapcar" . ""))
:general
(:states '(normal motion visual)
:keymaps '(emacs-lisp-mode-map lisp-mode-map)
")" #'sp-next-sexp
"(" #'sp-previous-sexp)
(nmmap
:keymaps '(emacs-lisp-mode-map lisp-interaction-mode-map)
"gr" #'eval-last-sexp)
(vmap
:keymaps '(emacs-lisp-mode-map lisp-interaction-mode-map)
"gr" #'eval-region))
#+end_src
** WIP Hydra like Lispy
:PROPERTIES:
:header-args:emacs-lisp: :tangle no
:END:
A [[file:core.org::*Hydra][Hydra]] which uses the ~Lispy~ package (by
abo-abo) to create a set of motions that allow movement around a lisp
file easily.
2024-04-18: Still working on this, quite rough around the edges.
#+begin_src emacs-lisp
(use-package lispy
:after (lisp-mode elisp-mode)
:hydra
(hydra-lispy
nil "Move around quickly in Lisp"
("h" #'lispy-left)
("j" ("t" #'lispy-teleport)
#'lispy-down)
("k" #'lispy-up)
("l" #'lispy-right)
("d" #'lispy-different)
("u" #'lispy-flow)
("o" #'lispy-oneline)
("m" #'lispy-multiline)
("N" #'lispy-narrow)
("W" #'lispy-widen)
("c" #'lispy-clone)
("fp" #'lispy-ace-paren)
("fs" #'lispy-ace-symbol :exit t)
("H" #'lispy-slurp)
("L" #'lispy-barf)
("M-h" #'lispy-move-left)
("M-j" #'lispy-move-down)
("M-k" #'lispy-move-up)
("M-l" #'lispy-move-right)
("C-g" nil))
:general
(nmmap
:keymaps '(emacs-lisp-mode-map lisp-mode-map)
"." #'hydra-lispy/body))
#+end_src
** Lisp indent function
Add a new lisp indent function which indents newline lists more
appropriately.
#+begin_src emacs-lisp
(use-package lisp-mode
:straight nil
:config
(defun +oreo/lisp-indent-function (indent-point state)
(let ((normal-indent (current-column))
(orig-point (point)))
(goto-char (1+ (elt state 1)))
(parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
(cond
;; car of form doesn't seem to be a symbol, or is a keyword
((and (elt state 2)
(or (not (looking-at "\\sw\\|\\s_"))
(looking-at ":")))
(if (not (> (save-excursion (forward-line 1) (point))
calculate-lisp-indent-last-sexp))
(progn (goto-char calculate-lisp-indent-last-sexp)
(beginning-of-line)
(parse-partial-sexp (point)
calculate-lisp-indent-last-sexp 0 t)))
;; Indent under the list or under the first sexp on the same
;; line as calculate-lisp-indent-last-sexp. Note that first
;; thing on that line has to be complete sexp since we are
;; inside the innermost containing sexp.
(backward-prefix-chars)
(current-column))
((and (save-excursion
(goto-char indent-point)
(skip-syntax-forward " ")
(not (looking-at ":")))
(save-excursion
(goto-char orig-point)
(looking-at ":")))
(save-excursion
(goto-char (+ 2 (elt state 1)))
(current-column)))
(t
(let ((function (buffer-substring (point)
(progn (forward-sexp 1) (point))))
method)
(setq method (or (function-get (intern-soft function)
'lisp-indent-function)
(get (intern-soft function) 'lisp-indent-hook)))
(cond ((or (eq method 'defun)
(and (null method)
(> (length function) 3)
(string-match "\\`def" function)))
(lisp-indent-defform state indent-point))
((integerp method)
(lisp-indent-specform method state
indent-point normal-indent))
(method
(funcall method indent-point state))))))))
(setq-default lisp-indent-function #'+oreo/lisp-indent-function))
#+end_src