Emacs config
Emacs config
One day we won’t hate one another, no young boy will march to war and I will clean up my Emacs config. But that day isn’t today.
- Me, in commit 93a0573. Adapted from The Dark Element - “The Pallbearer Walks Alone”. T_T
Introduction
My configuration of GNU Emacs, an awesome text editor piece of software that can do almost anything.
At the moment of writing this, that “almost anything” includes:
- Programming environment. With LSP & Co, Emacs is as good as many IDEs and is certainly on par with editors like VS Code.
Emacs is also particularly great at writing Lisp code, e.g. Clojure, Common Lisp, and of course, Emacs Lisp. - Org Mode is useful for a lot of things. My use cases include:
- Literate configuration
- Interactive programming à la Jupyter Notebook
- Task / project management
- Formatting documents. I’ve written my Master’s Thesis in Org Mode.
- Notetaking, mostly with org-roam and org-journal
- File management. Dired is my primary file manager.
- Email, with notmuch.
- Multimedia management, with EMMS.
- RSS feed reader, with elfeed.
- Managing passwords, with pass.
- Messengers:
- IRC, with ERC.
- Telegram, with telega.el
- X Window management, with EXWM. I literally live in Emacs.
- …
As I mentioned above, this document is a piece of literate configuration, i.e. program code interwoven with (occasionally semi-broken) English-language commentary.
I find that approach helpful for maintaining the configuration, but the quality and quantity of comments may vary. I also usually incorporate my Emacs-related blog posts back into this config.
So, you might extract something of value from here if you’re an avid Emacs user, but probably not if you’re a newcomer to the Elisp wonderland. If the latter applies to you, I’d advise checking out David Wilson’s System Crafters YouTube channel.
Some remarks
I decided not to keep configs for features that I do not use anymore because this config is already huge. But here are the last commits that had these features presented.
| Feature | Last commit |
|---|---|
| org-roam dailies | d2648918fcc338bd5c1cd6d5c0aa60a65077ccf7 |
| org-roam projects | 025278a1e180e86f3aade20242e4ac1cdc1a2f13 |
| treemacs | 3d87852745caacc0863c747f1fa9871d367240d2 |
| tab-bar.el | 19ff54db9fe21fd5bdf404a8d2612176baa8a6f5 |
| spaceline | 19ff54db9fe21fd5bdf404a8d2612176baa8a6f5 |
| code compass | 8594d6f53e42c70bbf903e168607841854818a38 |
| vue-mode | 8594d6f53e42c70bbf903e168607841854818a38 |
| svelte-mode | 8594d6f53e42c70bbf903e168607841854818a38 |
| pomidor | 8594d6f53e42c70bbf903e168607841854818a38 |
| elfeed-score | 8e591e0d2afd909ae5be00caf17f9b17c6cd8b61 |
| org-trello | 3f5967a5f63928ea9c8567d8d9f31e84cdbbc21f |
| jabber | 9b0e73a4703ff35a2d30fd704200052888191217 |
| wallabag | 9b0e73a4703ff35a2d30fd704200052888191217 |
| conda | 609fc84e439b11ea5064f3a948079daebb654aca |
| notmuch tags keybindings | eac134c5456051171c1c777254f503cc71ce12cd |
| expand-region | ab0d01c525f2b44dd64ec09747daf0fced4bd9c7 |
| org-latex-impatient | ab0d01c525f2b44dd64ec09747daf0fced4bd9c7 |
| dired-single | ab0d01c525f2b44dd64ec09747daf0fced4bd9c7 |
| progidy | ab0d01c525f2b44dd64ec09747daf0fced4bd9c7 |
| tree-sitter | 1920a48aec49837d63fa88ca315928dc4e9d14c2 |
Initial setup
Setting up the environment, performance tuning and a few basic settings.
First things first, lexical binding.
;;; -*- lexical-binding: t -*-
Packages
straight.el
Straight.el is my Emacs package manager of choice. Its advantages & disadvantages over other options are listed pretty thoroughly in the README file in the repo.
The following is the bootstrap script of straight.el.
References:
(defvar bootstrap-version)
(let ((bootstrap-file
(expand-file-name "straight/repos/straight.el/bootstrap.el" user-emacs-directory))
(bootstrap-version 5))
(unless (file-exists-p bootstrap-file)
(with-current-buffer
(url-retrieve-synchronously
"https://raw.githubusercontent.com/raxod502/straight.el/develop/install.el"
'silent 'inhibit-cookies)
(goto-char (point-max))
(eval-print-last-sexp)))
(load bootstrap-file nil 'nomessage))
use-package
A macro to simplify package specification & configuration. Integrates with straight.el.
Set use-package-verbose to t to print out loading times for individual packages.
References:
(straight-use-package 'use-package)
(eval-when-compile (require 'use-package))
Variables & environment
This section is about optioning the Emacs config.
The following is true if Emacs is meant to be used with TRAMP over slow ssh. Take a look at the TRAMP section for more details.
(setq my/slow-ssh
(or
(string= (getenv "IS_TRAMP") "true")))
The following is true is Emacs is run on a remote server where I don’t need stuff like my org workflow
(setq my/remote-server
(or (string= (getenv "IS_REMOTE") "true")
(string= (system-name) "dev-digital")
(string= (system-name) "violet")
(string= (system-name) "viridian")))
And the following is true if Emacs is run from termux on Android.
(setq my/is-termux (string-match-p (rx (* nonl) "com.termux" (* nonl)) (getenv "HOME")))
Also, I sometimes need to know if a program is running inside Emacs (say, inside a terminal emulator). To do that, I set the following environment variable:
(setenv "IS_EMACS" "true")
Finally, I want to have a minimal Emacs config for debugging purposes. This has just straight.el, use-packages, and evil.
<<minimal>>
To launch Emacs with this config, run
emacs -q -l ~/.emacs.d/init-minimal.el
A convinience macro:
(defmacro with-eval-after-load-norem (file &rest body)
(declare (indent 1) (debug (form def-body)))
`(unless my/remote-server
(with-eval-after-load ,file
,@body)))
Performance
Measure startup speed
A small function to print out the loading time and number of GCs during the loading. Can be useful as a point of data for optimizing Emacs startup time.
(setq my/emacs-started nil)
(add-hook 'emacs-startup-hook
(lambda ()
(message "*** Emacs loaded in %s with %d garbage collections."
(format "%.2f seconds"
(float-time
(time-subtract after-init-time before-init-time)))
gcs-done)
(setq my/emacs-started t)))
Set the following to t to print debug information during the startup. This will include the order in which the packages are loaded and the loading time of individual packages.
;; (setq use-package-verbose t)
Garbage collection
Just setting gc-cons-treshold to a larger value.
(setq gc-cons-threshold 80000000)
(setq read-process-output-max (* 1024 1024))
Run garbage collection when Emacs is unfocused
Run GC when Emacs loses focus. Time will tell if that’s a good idea.
Some time has passed, and I still don’t know if there is any quantifiable advantage to this, but it doesn’t hurt.
(add-hook 'emacs-startup-hook
(lambda ()
(if (boundp 'after-focus-change-function)
(add-function :after after-focus-change-function
(lambda ()
(unless (frame-focus-state)
(garbage-collect))))
(add-hook 'after-focus-change-function 'garbage-collect))))
Measure RAM usage
I’ve noticed that Emacs occasionally eats a lot of RAM, especially when used with EXWM. This is my attempt to measure RAM usage.
I have some concerns that ps -o rss may be unrepresentative because of shared memory, but I guess this shouldn’t be a problem here because there’s only one process of Emacs.
(defun my/get-ram-usage-async (callback)
(let* ((temp-buffer (generate-new-buffer "*ps*"))
(proc (start-process "ps" temp-buffer "ps"
"-p" (number-to-string (emacs-pid)) "-o" "rss")))
(set-process-sentinel
proc
(lambda (process _msg)
(when (eq (process-status process) 'exit)
(let* ((output (with-current-buffer temp-buffer
(buffer-string)))
(usage (string-to-number (nth 1 (split-string output "\n")))))
(ignore-errors
(funcall callback usage)))
(kill-buffer temp-buffer))))))
(defun my/ram-usage ()
(interactive)
(my/get-ram-usage-async
(lambda (data)
(message "%f Gb" (/ (float data) 1024 1024)))))
Micromamba
mamba is a faster alternative to Anaconda, a package and environment manager. micromamba is a tiny version that provides a subset of mamba commands.
micromamba.el is my package to interact with the latter.
(use-package micromamba
:straight t
:if (executable-find "micromamba")
:config
(micromamba-activate "general"))
Config files
Custom file location
By default, custom writes stuff to init.el, which is somewhat annoying. The following makes it write to a separate file custom.el
(setq custom-file (concat user-emacs-directory "custom.el"))
(load custom-file 'noerror)
authinfo
Use only the gpg-encrypted version of the file.
(setq auth-source-debug t)
(setq auth-sources '("~/.authinfo"))
Private config
I have some variables which I don’t commit to the repo, e.g. my current location. They are stored in private.el
(let ((private-file (expand-file-name "private.el" user-emacs-directory)))
(when (file-exists-p private-file)
(load-file private-file)))
No littering
By default Emacs and its packages create a lot files in .emacs.d and in other places. no-littering is a collective effort to redirect all of that to two folders in user-emacs-directory.
(use-package no-littering
:straight t)
Prevent Emacs from closing
This adds a confirmation to avoid accidental Emacs closing.
(setq confirm-kill-emacs 'y-or-n-p)
General settings
Keybindings
general.el
general.el provides a convenient interface to manage Emacs keybindings.
References:
(use-package general
:straight t
:config
(general-evil-setup))
which-key
A package that displays the available keybindings in a popup. The package is pretty useful, as Emacs seems to have more keybindings than I can remember at any given point.
References:
(use-package which-key
:config
(setq which-key-idle-delay 0.3)
(setq which-key-popup-type 'frame)
(which-key-mode)
(which-key-setup-side-window-bottom)
(set-face-attribute 'which-key-local-map-description-face nil
:weight 'bold)
:straight t)
dump keybindings
A function to dump keybindings starting with a prefix to a buffer in a tree-like form.
(defun my/dump-bindings-recursive (prefix &optional level buffer)
(dolist (key (which-key--get-bindings (kbd prefix)))
(with-current-buffer buffer
(when level
(insert (make-string level ? )))
(insert (apply #'format "%s%s%s\n" key)))
(when (string-match-p
(rx bos "+" (* nonl))
(substring-no-properties (elt key 2)))
(my/dump-bindings-recursive
(concat prefix " " (substring-no-properties (car key)))
(+ 2 (or level 0))
buffer))))
(defun my/dump-bindings (prefix)
"Dump keybindings starting with PREFIX in a tree-like form."
(interactive "sPrefix: ")
(let ((buffer (get-buffer-create "bindings")))
(with-current-buffer buffer
(erase-buffer))
(my/dump-bindings-recursive prefix 0 buffer)
(with-current-buffer buffer
(goto-char (point-min)))
(switch-to-buffer-other-window buffer)))
Evil
An entire ecosystem of packages that emulates the main features of Vim. Probably the best vim emulator out there.
The only problem is that the package name makes it hard to google anything by just typing “evil”.
References:
Evil-mode
Basic evil configuration.
(use-package evil
:straight t
:init
(setq evil-want-integration t)
(setq evil-want-C-u-scroll t)
(setq evil-want-keybinding nil)
(setq evil-search-module 'evil-search)
(setq evil-split-window-below t)
(setq evil-vsplit-window-right t)
(unless (display-graphic-p)
(setq evil-want-C-i-jump nil))
:config
(evil-mode 1)
;; (setq evil-respect-visual-line-mode t)
(when (fboundp #'undo-tree-undo)
(evil-set-undo-system 'undo-tree))
(when (fboundp #'general-define-key)
(general-define-key
:states '(motion)
"ze" nil)))
Addons
evil-surround emulates one of my favorite vim plugins, surround.vim. Adds a lot of parentheses management options.
(use-package evil-surround
:straight t
:after evil
:config
(global-evil-surround-mode 1))
evil-commentary emulates commentary.vim. It provides actions for quick insertion and deletion of comments.
(use-package evil-commentary
:straight t
:after evil
:config
(evil-commentary-mode))
evil-quickscope emulates quickscope.vim. It highlights certain target characters for f, F, t, T keys.
(use-package evil-quickscope
:straight t
:after evil
:config
:hook ((prog-mode . turn-on-evil-quickscope-mode)
(LaTeX-mode . turn-on-evil-quickscope-mode)
(org-mode . turn-on-evil-quickscope-mode)))
evil-numbers allows incrementing and decrementing numbers at point.
(use-package evil-numbers
:straight t
:commands (evil-numbers/inc-at-pt evil-numbers/dec-at-pt)
:init
(general-nmap
"g+" 'evil-numbers/inc-at-pt
"g-" 'evil-numbers/dec-at-pt))
evil-lion provides alignment operators, somewhat similar to vim-easyalign.
(use-package evil-lion
:straight t
:config
(setq evil-lion-left-align-key (kbd "g a"))
(setq evil-lion-right-align-key (kbd "g A"))
(evil-lion-mode))
evil-matchit makes “%” to match things like tags. It doesn’t work perfectly, so I occasionally turn it off.
(use-package evil-matchit
:straight t
:disabled
:config
(global-evil-matchit-mode 1))
My additions
Do ex search in other buffer. Like *, but switch to other buffer and search there.
(defun my/evil-ex-search-word-forward-other-window (count &optional symbol)
(interactive (list (prefix-numeric-value current-prefix-arg)
evil-symbol-word-search))
(save-excursion
(evil-ex-start-word-search nil 'forward count symbol))
(other-window 1)
(evil-ex-search-next))
(general-define-key
:states '(normal)
"&" #'my/evil-ex-search-word-forward-other-window)
evil-collection
evil-collection is a package that provides evil bindings for a lot of different packages. One can see the complete list in the modes folder.
(use-package evil-collection
:straight t
:after evil
:config
(evil-collection-init
'(eww devdocs proced emms pass calendar dired ivy debug guix calc
docker ibuffer geiser pdf info elfeed edebug bookmark company
vterm flycheck profiler cider explain-pause-mode notmuch custom
xref eshell helpful compile comint git-timemachine magit prodigy
slime forge deadgrep vc-annonate telega doc-view gnus)))
Avy
Avy is a package that helps navigate Emacs in a tree-like manner.
References:
(use-package avy
:straight t
:config
(setq avy-timeout-seconds 0.5)
(setq avy-ignored-modes
'(image-mode doc-view-mode pdf-view-mode exwm-mode))
(general-define-key
:states '(normal motion)
"-" nil
"--" #'avy-goto-char-2
"-=" #'avy-goto-symbol-1))
ace-link is a package to jump to links with avy.
(use-package ace-link
:straight t
:commands (ace-link-info ace-link-help ace-link-woman ace-link-eww))
My keybindings
Various keybinding settings that I can’t put anywhere else.
Escape key
Use the escape key instead of No, not really after 2 years… But I’ll keep this fragment.C-g whenever possible
I must have copied it from somewhere, but as I googled to find out the source, I discovered quite a number of variations of the following code over time. I wonder if Richard Dawkins was inspired by something like this a few decades ago.
(defun minibuffer-keyboard-quit ()
"Abort recursive edit.
In Delete Selection mode, if the mark is active, just deactivate it;
then it takes a second \\[keyboard-quit] to abort the minibuffer."
(interactive)
(if (and delete-selection-mode transient-mark-mode mark-active)
(setq deactivate-mark t)
(when (get-buffer "*Completions*") (delete-windows-on "*Completions*"))
(abort-recursive-edit)))
(defun my/escape-key ()
(interactive)
(evil-ex-nohighlight)
(keyboard-quit))
(general-define-key
:keymaps '(normal visual global)
[escape] #'my/escape-key)
(general-define-key
:keymaps '(minibuffer-local-map
minibuffer-local-ns-map
minibuffer-local-completion-map
minibuffer-local-must-match-map
minibuffer-local-isearch-map)
[escape] 'minibuffer-keyboard-quit)
Home & end
(general-def :states '(normal insert visual)
"<home>" 'beginning-of-line
"<end>" 'end-of-line)
My leader
Using the SPC key as a leader key, like in Doom Emacs or Spacemacs.
(general-create-definer my-leader-def
:keymaps 'override
:prefix "SPC"
:states '(normal motion emacs))
(general-def :states '(normal motion emacs)
"SPC" nil
"M-SPC" (general-key "SPC"))
(general-def :states '(insert)
"M-SPC" (general-key "SPC" :state 'normal))
(my-leader-def "?" 'which-key-show-top-level)
(my-leader-def "E" 'eval-expression)
(general-def :states '(insert)
"<f1> e" #'eval-expression)
(my-leader-def
"SPC" '(:wk "second level")
"SPC x" '(:wk "ctl-x")
"SPC x" ctl-x-map)
general.el has a nice integration with which-key, so I use that to show more descriptive annotations for certain groups of keybindings (the default annotation is just prefix).
(my-leader-def
"a" '(:which-key "apps"))
Universal argument
Change the universal argument to M-u. I use C-u to scroll up, as I’m used to from vim.
(general-def
:keymaps 'universal-argument-map
"M-u" 'universal-argument-more)
(general-def
:keymaps 'override
:states '(normal motion emacs insert visual)
"M-u" 'universal-argument)
Profiler
The built-in profiler is a magnificent tool to troubleshoot performance issues.
(my-leader-def
:infix "P"
"" '(:which-key "profiler")
"s" 'profiler-start
"e" 'profiler-stop
"p" 'profiler-report)
Buffer switching
Some keybindings I used in vim to switch buffers and can’t let go of. But I think I started to use these less since I made an attempt in i3 integration.
(general-define-key
:keymaps 'override
"C-<right>" 'evil-window-right
"C-<left>" 'evil-window-left
"C-<up>" 'evil-window-up
"C-<down>" 'evil-window-down
"C-h" 'evil-window-left
"C-l" 'evil-window-right
"C-k" 'evil-window-up
"C-j" 'evil-window-down
"C-x h" 'previous-buffer
"C-x l" 'next-buffer)
(general-define-key
:keymaps 'evil-window-map
"x" 'kill-buffer-and-window
"d" 'kill-current-buffer)
winner-mode to keep the history of window states.
It doesn’t play too well with perspective.el, that is it has a single history list for all of the perspectives. But it is still quite usable.
(winner-mode 1)
(general-define-key
:keymaps 'evil-window-map
"u" 'winner-undo
"U" 'winner-redo)
Buffer management
(my-leader-def
:infix "b"
"" '(:which-key "buffers")
"s" '((lambda () (interactive) (switch-to-buffer (persp-scratch-buffer)))
:which-key "*scratch*")
"m" '((lambda () (interactive) (persp-switch-to-buffer "*Messages*"))
:which-key "*Messages*")
"l" 'next-buffer
"h" 'previous-buffer
"k" 'kill-buffer
"b" 'persp-ivy-switch-buffer
"r" 'revert-buffer
"u" 'ibuffer)
xref
Some keybindings for xref and go to definition.
(general-nmap
"gD" 'xref-find-definitions-other-window
"gr" 'xref-find-references
"gd" 'evil-goto-definition)
(my-leader-def
"fx" 'xref-find-apropos)
(use-package xref
:straight (:type built-in))
Folding
There are multiple ways to fold text in Emacs.
The most versatile is the built-in hs-minor-mode, which seems to work out of the box for Lisps, C-like languages, and Python. outline-minor-mode works for org-mode, LaTeX and the like. There is a 3rd-party solution origami.el, which I found to be somewhat less stable.
Evil does a pretty good job of abstracting all these packages with a set of vim-like keybindings. I was using SPC in vim, but as now this isn’t an option, I set TAB to toggle folding.
(require 'hideshow)
(general-define-key
:keymaps '(hs-minor-mode-map outline-minor-mode-map)
:states '(normal motion)
"ze" 'hs-hide-level
"TAB" 'evil-toggle-fold)
Zoom UI
(defun my/zoom-in ()
"Increase font size by 10 points"
(interactive)
(set-face-attribute 'default nil
:height
(+ (face-attribute 'default :height) 10)))
(defun my/zoom-out ()
"Decrease font size by 10 points"
(interactive)
(set-face-attribute 'default nil
:height
(- (face-attribute 'default :height) 10)))
;; change font size, interactively
(global-set-key (kbd "C-+") 'my/zoom-in)
(global-set-key (kbd "C-=") 'my/zoom-out)
i3 integration
UPD . I have finally switched to EXWM as my window manager, but as long as I keep i3 as a backup solution, this section persists. Check out the post for a somewhat better presentation.
One advantage of EXWM for an Emacs user is that EXWM gives one set of keybindings to manage both Emacs windows and X windows. In every other WM, like my preferred i3wm, two orthogonal keymaps seem to be necessary. But, as both programs are quite customizable, I want to see whether I can replicate at least some part of the EXWM goodness in i3.
But why not just use EXWM? One key reason is that to my taste (and perhaps on my hardware) EXWM didn’t feel snappy enough. Also, I really like i3’s tree-based layout structure; I feel like it fits my workflow much better than anything else I tried, including the master/stack paradigm of XMonad, for instance.
One common point of criticism of i3 is that it is not extensible enough, especially compared to WMs that are configured in an actual programing language, like the mentioned XMonad, Qtile, Awesome, etc. But I think i3’s extensibility is underappreciated, although the contents of this section may lie closer to the limits of how far one can go there.
The basic idea is to launch a normal i3 command with i3-msg in case the current window is not Emacs, otherwise pass that command to Emacs with emacsclient. In Emacs, execute the command if possible, otherwise pass the command back to i3.
This may seem like a lot of overhead, but I didn’t feel it even in the worst case (i3 -> Emacs -> i3), so at least in that regard, the interaction feels seamless. The only concern is that this command flow is vulnerable to Emacs getting stuck, but it is still much less of a problem than with EXWM.
One interesting observation here is that Emacs windows and X windows are sort of one-level entities, so I can talk just about “windows”.
At any rate, we need a script to do the i3 -> Emacs part:
if [[ $(xdotool getactivewindow getwindowname) =~ ^emacs(:.*)?@.* ]]; then
command="(my/emacs-i3-integration \"$@\")"
emacsclient -e "$command"
else
i3-msg $@
fi
This script is being run from the i3 configuration.
For this to work, we need to make sure that Emacs starts a server, so here is an expression to do just that:
(unless my/remote-server
(add-hook 'after-init-hook #'server-start))
And here is a simple macro to do the Emacs -> i3 part:
(defmacro i3-msg (&rest args)
`(start-process "emacs-i3-windmove" nil "i3-msg" ,@args))
Now we have to handle the required set of i3 commands. It is worth noting here that I’m not trying to implement a general mechanism to apply i3 commands to Emacs, rather I’m implementing a small subset that I use in my i3 configuration and that maps reasonably to the Emacs concepts.
Also, I use evil-mode and generally configure the software to have vim-style bindings where possible. So if you don’t use evil-mode you’d have to detangle the given functions from evil, but then, I guess, you do not use super+hjkl to manage windows either.
First, for the focus command I want to move to an Emacs window in the given direction if there is one, otherwise move to an X window in the same direction. Fortunately, i3 and windmove have the same names for directions, so the function is rather straightforward.
One caveat here is that the minibuffer is always the bottom-most Emacs window, so it is necessary to check for that as well.
(defun my/emacs-i3-windmove (dir)
(let ((other-window (windmove-find-other-window dir)))
(if (or (null other-window) (window-minibuffer-p other-window))
(i3-msg "focus" (symbol-name dir))
(windmove-do-window-select dir))))
For the move I want the following behavior:
- if there is space in the required direction, move the Emacs window there;
- if there is no space in the required direction, but space in two orthogonal directions, move the Emacs window so that there is no more space in the orthogonal directions;
- otherwise, move an X window (Emacs frame).
For the first part, window-swap-states with windmove-find-other-window do well enough.
evil-move-window works well for the second part. By itself it doesn’t behave quite like i3, for instance, (evil-move-window 'right) in a three-column split would move the window from the far left side to the far right side (bypassing center). Hence the combination as described here.
So here is a simple predicate which checks whether there is space in the given direction.
(defun my/emacs-i3-direction-exists-p (dir)
(cl-some (lambda (dir)
(let ((win (windmove-find-other-window dir)))
(and win (not (window-minibuffer-p win)))))
(pcase dir
('width '(left right))
('height '(up down)))))
And the implementation of the move command.
(defun my/emacs-i3-move-window (dir)
(let ((other-window (windmove-find-other-window dir))
(other-direction (my/emacs-i3-direction-exists-p
(pcase dir
('up 'width)
('down 'width)
('left 'height)
('right 'height)))))
(cond
((and other-window (not (window-minibuffer-p other-window)))
(window-swap-states (selected-window) other-window))
(other-direction
(evil-move-window dir))
(t (i3-msg "move" (symbol-name dir))))))
Next on the line are resize grow and resize shrink. evil-window- functions do nicely for this task.
This function also checks whether there is space to resize in the given direction with the help of the predicate defined above. The command is forwarded back to i3 if there is not.
(defun my/emacs-i3-resize-window (dir kind value)
(if (or (one-window-p)
(not (my/emacs-i3-direction-exists-p dir)))
(i3-msg "resize" (symbol-name kind) (symbol-name dir)
(format "%s px or %s ppt" value value))
(setq value (/ value 2))
(pcase kind
('shrink
(pcase dir
('width
(evil-window-decrease-width value))
('height
(evil-window-decrease-height value))))
('grow
(pcase dir
('width
(evil-window-increase-width value))
('height
(evil-window-increase-height value)))))))
transpose-frame is a package to “transpose” the current frame layout, which behaves someone similar to the layout toggle split command in i3, so I’ll use it as well.
(use-package transpose-frame
:straight t
:commands (transpose-frame))
Finally, the entrypoint for the Emacs integration. In addition to the commands defined above, it processes split and kill commands and passes every other command back to i3.
(defun my/emacs-i3-integration (command)
(pcase command
((rx bos "focus")
(my/emacs-i3-windmove
(intern (elt (split-string command) 1))))
((rx bos "move")
(my/emacs-i3-move-window
(intern (elt (split-string command) 1))))
((rx bos "resize")
(my/emacs-i3-resize-window
(intern (elt (split-string command) 2))
(intern (elt (split-string command) 1))
(string-to-number (elt (split-string command) 3))))
("layout toggle split" (transpose-frame))
("split h" (evil-window-split))
("split v" (evil-window-vsplit))
("kill" (evil-quit))
(- (i3-msg command))))
Editing text
Various packages, tricks, and settings that help with the central task of Emacs - editing text.
Indentation & whitespace
Aggressive Indent
A package to keep the code intended.
Doesn’t work too well with many ecosystems because the LSP-based indentation is rather slow but nice for Lisps.
References:
(use-package aggressive-indent
:commands (aggressive-indent-mode)
:straight t)
Delete trailing whitespace
Delete trailing whitespace on save, unless in particular modes where trailing whitespace is important, like Markdown.
(setq my/trailing-whitespace-modes '(markdown-mode))
(require 'cl-extra)
(add-hook 'before-save-hook
(lambda ()
(unless (cl-some #'derived-mode-p my/trailing-whitespace-modes)
(delete-trailing-whitespace))))
Tabs
Some default settings to manage tabs.
(setq tab-always-indent nil)
(setq-default default-tab-width 4)
(setq-default tab-width 4)
(setq-default evil-indent-convert-tabs nil)
(setq-default indent-tabs-mode nil)
(setq-default evil-shift-round nil)
Settings
Scrolling
(setq scroll-conservatively scroll-margin)
(setq scroll-step 1)
(setq scroll-preserve-screen-position t)
(setq scroll-error-top-bottom t)
(setq mouse-wheel-progressive-speed nil)
(setq mouse-wheel-inhibit-click-time nil)
Clipboard
(setq select-enable-clipboard t)
(setq mouse-yank-at-point t)
Backups
(setq backup-inhibited t)
(setq auto-save-default nil)
Undo Tree
Replaces Emacs built-in sequential undo system with a tree-based one. Probably one of the greatest options of Emacs as a text editor.
References:
(use-package undo-tree
:straight t
:config
(global-undo-tree-mode)
(setq undo-tree-visualizer-diff t)
(setq undo-tree-visualizer-timestamps t)
(setq undo-tree-auto-save-history nil)
(my-leader-def "u" 'undo-tree-visualize)
(fset 'undo-auto-amalgamate 'ignore)
(setq undo-limit 6710886400)
(setq undo-strong-limit 100663296)
(setq undo-outer-limit 1006632960))
Snippets
A snippet system for Emacs and a collection of pre-built snippets.
yasnippet-snippets has to be loaded before yasnippet for user snippets to override the pre-built ones.
Edit I don’t really use yasnippet-snippets, so I’d rather write stuff manually.
References:
(use-package yasnippet-snippets
:disabled
:straight t)
(use-package yasnippet
:straight t
:config
(setq yas-snippet-dirs
`(,(concat (expand-file-name user-emacs-directory) "snippets")
;; yasnippet-snippets-dir
))
(setq yas-triggers-in-field t)
(yas-global-mode 1)
(my-leader-def
:keymaps 'yas-minor-mode-map
:infix "es"
"" '(:wk "yasnippet")
"n" #'yas-new-snippet
"s" #'yas-insert-snippet
"v" #'yas-visit-snippet-file))
(general-imap "M-TAB" 'company-yasnippet)
Other small packages
Managing parentheses (smartparens)
A minor mode to deal with pairs. Its functionality overlaps with evil-surround, but smartparens provides the most comfortable way to do stuff like automatically insert pairs.
References:
(use-package smartparens
:straight t)
Visual fill column mode
(use-package visual-fill-column
:straight t
:commands (visual-fill-column-mode)
:config
(add-hook 'visual-fill-column-mode-hook
(lambda () (setq visual-fill-column-center-text t))))
Accents
Input accented characters.
(use-package accent
:straight t
:init
(general-define-key
:states '(normal)
"gs" #'accent-menu)
(general-define-key
:states '(normal insert)
"M-n" #'accent-menu)
:commands (accent-menu)
:config
(general-define-key
:keymaps 'popup-menu-keymap
"C-j" #'popup-next
"C-k" #'popup-previous
"M-j" #'popup-next
"M-k" #'popup-previous)
(setq accent-custom '((a (ā))
(A (Ā)))))
Working with projects
Packages related to managing projects.
I used to have Treemacs here, but in the end decided that dired with dired-sidebar does a better job. Dired has its separate section in “Applications”.
Projectile
Projectile gives a bunch of useful functions for managing projects, like finding files within a project, fuzzy-find, replace, etc.
defadvice is meant to speed projectile up with TRAMP a bit.
(use-package projectile
:straight t
:config
(projectile-mode +1)
(setq projectile-project-search-path '("~/Code" "~/Documents")))
(use-package counsel-projectile
:after (counsel projectile)
:straight t)
(my-leader-def
"p" '(:keymap projectile-command-map :which-key "projectile"))
(general-nmap "C-p" 'counsel-projectile-find-file)
Git & Magit
Magit is a git interface for Emacs. The closest non-Emacs alternative (sans actual clones) I know is lazygit, which I used before Emacs.
(use-package magit
:straight t
:commands (magit-status magit-file-dispatch)
:init
(my-leader-def
"m" 'magit
"M" 'magit-file-dispatch)
:config
(setq magit-blame-styles
'((headings
(heading-format . "%-20a %C %s\n"))
(highlight
(highlight-face . magit-blame-highlight))
(lines
(show-lines . t)
(show-message . t)))))
forge provides integration with forges, such as GitHub and GitLab.
(use-package forge
:after magit
:straight t
:config
(add-to-list 'forge-alist '("gitlab.etu.ru"
"gitlab.etu.ru/api/v4"
"gitlab.etu.ru"
forge-gitlab-repository)))
git-gutter is a package which shows git changes for each line (added/changed/deleted lines).
(use-package git-gutter
:straight t
:if (not my/slow-ssh)
:config
(global-git-gutter-mode +1))
git-timemachine allows visiting previous versions of a file.
(use-package git-timemachine
:straight t
:commands (git-timemachine))
Editorconfig
Editorconfig support for Emacs.
References:
(use-package editorconfig
:straight t
:config
(unless my/slow-ssh (editorconfig-mode 1))
(add-to-list 'editorconfig-indentation-alist
'(emmet-mode emmet-indentation)))
Editing files
A minor mode to remember recently edited files.
(recentf-mode 1)
Save the last place visited in the file.
(save-place-mode nil)
Deadgrep
deadgrep is a nice Emacs interface for ripgrep. Running ivy-occur in counsel-rg does something a bit similar, but the deadgrep is more full-featured.
Somehow I couldn’t hook toogle-truncate-lines into the existing package hooks, so here goes advice.
(defun my/deadgrep-fix-buffer-advice (fun &rest args)
(let ((buf (apply fun args)))
(with-current-buffer buf
(toggle-truncate-lines 1))
buf))
(use-package deadgrep
:straight t
:commands (deadgrep)
:config
(advice-add #'deadgrep--buffer :around #'my/deadgrep-fix-buffer-advice))
Completion
Ivy, counsel, swiper
Minibuffer completion tools for Emacs.
References:
(use-package ivy
:straight t
:config
(setq ivy-use-virtual-buffers t)
(ivy-mode))
(use-package counsel
:straight t
:after ivy
:config
(counsel-mode))
(use-package swiper
:defer t
:straight t)
ivy-rich
ivy-rich provides a more informative interface for ivy.
(use-package ivy-rich
:straight t
:after ivy
:config
(ivy-rich-mode 1)
(setcdr (assq t ivy-format-functions-alist) #'ivy-format-function-line))
prescient
A package that enhances sorting & filtering of candidates. ivy-prescient adds integration with Ivy.
References:
(use-package ivy-prescient
:straight t
:after counsel
:config
(ivy-prescient-mode +1)
(setq ivy-prescient-retain-classic-highlighting t)
(prescient-persist-mode 1)
(setq ivy-prescient-sort-commands
'(:not swiper
swiper-isearch
ivy-switch-buffer
;; ivy-resume
;; ivy--restore-session
lsp-ivy-workspace-symbol
dap-switch-stack-frame
my/dap-switch-stack-frame
dap-switch-session
dap-switch-thread
counsel-grep
;; counsel-find-file
counsel-git-grep
counsel-rg
counsel-ag
counsel-ack
counsel-fzf
counsel-pt
counsel-imenu
counsel-yank-pop
counsel-recentf
counsel-buffer-or-recentf
proced-filter-interactive
proced-sort-interactive
perspective-exwm-switch-perspective
my/persp-ivy-switch-buffer-other-window
lsp-execute-code-action
dired-recent-open
my/index-nav))
;; Do not use prescient in find-file
(ivy--alist-set 'ivy-sort-functions-alist #'read-file-name-internal #'ivy-sort-file-function-default))
keybindings
Setting up quick access to various completions.
(my-leader-def
:infix "f"
"" '(:which-key "various completions")'
;; "b" 'counsel-switch-buffer
"b" 'persp-ivy-switch-buffer
"e" 'micromamba-activate
"f" 'project-find-file
"c" 'counsel-yank-pop
"a" 'counsel-rg
"d" 'deadgrep
"A" 'counsel-ag)
(general-define-key
:states '(insert normal)
"C-y" 'counsel-yank-pop)
(defun my/swiper-isearch ()
(interactive)
(if current-prefix-arg
(swiper-all)
(swiper-isearch)))
(my-leader-def "SPC SPC" 'ivy-resume)
(my-leader-def "s" 'my/swiper-isearch)
(general-define-key
:keymaps '(ivy-minibuffer-map swiper-map)
"M-j" 'ivy-next-line
"M-k" 'ivy-previous-line
"<C-return>" 'ivy-call
"M-RET" 'ivy-immediate-done
[escape] 'minibuffer-keyboard-quit)
company
A completion framework for Emacs.
References:
(use-package company
:straight t
:config
(global-company-mode)
(setq company-idle-delay 0.125)
(setq company-dabbrev-downcase nil)
(setq company-show-numbers t))
(general-imap "C-SPC" 'company-complete)
A company frontend with nice icons.
Disabled since the base company got icons support and since company-box has some issues with spaceline. Enabled back because I didn’t like spaceline.
(use-package company-box
:straight t
:if (display-graphic-p)
:after (company)
:hook (company-mode . company-box-mode))
Help
- CREDIT: Thanks @phundrak on the System Crafters Discord for suggesting
help-map
helpful package improves the *help* buffer.
(use-package helpful
:straight t
:commands (helpful-callable
helpful-variable
helpful-key
helpful-macro
helpful-function
helpful-command))
As I use C-h to switch buffers, I moved the help to SPC-h with the code below.
(my-leader-def
"h" '(:keymap help-map :which-key "help"))
(my-leader-def
:infix "h"
"" '(:which-key "help")
"h" '(:keymap help-map :which-key "help-map")
"f" 'helpful-function
"k" 'helpful-key
"v" 'helpful-variable
"o" 'helpful-symbol
"i" 'info)
(general-define-key
:keymaps 'help-map
"f" 'helpful-function
"k" 'helpful-key
"v" 'helpful-variable
"o" 'helpful-symbol)
Time trackers
Time trackers I happen to use.
References:
WakaTime
Before I figure out how to package this for Guix:
- Clone the repo
- Run
go build - Copy the binary to the
~/binfolder
(use-package wakatime-mode
:straight (:host github :repo "SqrtMinusOne/wakatime-mode")
:if (not (or my/remote-server))
:config
(setq wakatime-ignore-exit-codes '(0 1 102 112))
(advice-add 'wakatime-init :after (lambda () (setq wakatime-cli-path (expand-file-name "~/bin/wakatime-cli"))))
;; (setq wakatime-cli-path (executable-find "wakatime"))
(global-wakatime-mode))
ActivityWatch
(use-package request
:straight t
:defer t)
(use-package activity-watch-mode
:straight t
:if (not (or my/is-termux my/remote-server))
:config
(global-activity-watch-mode))
UI settings
General settings
Miscellaneous
Disable GUI elements
(unless my/is-termux
(tool-bar-mode -1)
(menu-bar-mode -1)
(scroll-bar-mode -1))
(when my/is-termux
(menu-bar-mode -1))
Transparency. Not setting it here, as I used to use picom with i3, and EXWM config has its own settings.
;; (set-frame-parameter (selected-frame) 'alpha '(90 . 90))
;; (add-to-list 'default-frame-alist '(alpha . (90 . 90)))
Prettify symbols. Also not setting it, ligatures seem to be enough for me.
;; (global-prettify-symbols-mode)
Do not show GUI dialogs
(setq use-dialog-box nil)
No start screen
(setq inhibit-startup-screen t)
Visual bell
(setq visible-bell 0)
y or n instead of yes or no
(defalias 'yes-or-no-p 'y-or-n-p)
Hide mouse cursor while typing
(setq make-pointer-invisible t)
Show pairs
(show-paren-mode 1)
Highlight the current line
(global-hl-line-mode 1)
Line numbers
Line numbers. There seems to be a catch with the relative number setting:
visualdoesn’t take folding into account but also doesn’t take wrapped lines into account (i.e. there are multiple numbers for a single wrapped line)relativemakes a single number for a wrapped line, but counts folded lines.
visual option seems to be less of a problem in most cases.
(global-display-line-numbers-mode 1)
(line-number-mode nil)
(setq display-line-numbers-type 'visual)
(column-number-mode)
Word wrapping
Word wrapping. These settings aren’t too obvious compared to :set wrap from vim:
word-wrapmeans just “don’t split one word between two lines”. So, if there isn’t enough place to put a word at the end of the line, it will be put on a new one. RunM-x toggle-word-wrapto toggle that.visual-line-modeseems to be a superset ofword-wrap. It also enables some editing commands to work on visual lines instead of logical ones, hence the naming.auto-fill-modedoes the same asword-wrap, except it actually edits the buffer to make lines break in the appropriate places.truncate-linestruncates long lines instead of continuing them. RunM-x toggle-truncate-linesto toggle that. I find thattruncate-linesbehaves strangely whenvisual-line-modeis on, so I use one or another.
(setq word-wrap 1)
(global-visual-line-mode 1)
Custom frame format
Title format, which used to look something like emacs:project@hostname. Now it’s just emacs.
(setq-default frame-title-format
'(""
"emacs"
;; (:eval
;; (let ((project-name (projectile-project-name)))
;; (if (not (string= "-" project-name))
;; (format ":%s@%s" project-name (system-name))
;; (format "@%s" (system-name)))))
))
Olivetti
Olivetti is a package that limits the current text body width. It’s pretty nice to use when writing texts.
(use-package olivetti
:straight t
:if (display-graphic-p)
:config
(setq-default olivetti-body-width 86))
Keycast
Showing the last pressed key. Occasionally useful.
(use-package keycast
:straight t
:config
(define-minor-mode keycast-mode
"Keycast mode"
:global t
(if keycast-mode
(progn
(add-to-list 'global-mode-string '("" keycast-mode-line " "))
(add-hook 'pre-command-hook 'keycast--update t) )
(remove-hook 'pre-command-hook 'keycast--update)
(setq global-mode-string (delete '("" keycast-mode-line " ") global-mode-string)))))
Themes and colors
Theme packages
My colorschemes of choice.
(use-package doom-themes
:straight t
:config
(setq doom-themes-enable-bold t
doom-themes-enable-italic t)
;; (if my/remote-server
;; (load-theme 'doom-gruvbox t)
;; (load-theme 'doom-palenight t))
(doom-themes-visual-bell-config)
(setq doom-themes-treemacs-theme "doom-colors")
(doom-themes-treemacs-config))
(use-package modus-themes
:straight t)
Let’s see…
(use-package ef-themes
:straight t
:config
(setq ef-duo-light-palette-overrides
'((constant green))))
Custom theme
Here I define a few things on the top of Emacs theme, because:
- Occasionally I want to have more theme-derived faces
- I also want Emacs theme to be applied to the rest of the system (see the Desktop config on that)
Theme-derived faces have to placed in a custom theme, because if one calls custom-set-faces and custom-set-variables in code, whenever a variable is changed and saved in a customize buffer, data from all calls of these functions is saved as well.
Get color values
Here’s a great package with various color tools:
(use-package ct
:straight t)
As of now I want this to support doom-themes and modus-themes. So, let’s get which one is enabled:
(defun my/doom-p ()
(seq-find (lambda (x) (string-match-p (rx bos "doom") (symbol-name x)))
custom-enabled-themes))
(defun my/modus-p ()
(seq-find (lambda (x) (string-match-p (rx bos "modus") (symbol-name x)))
custom-enabled-themes))
(defun my/ef-p ()
(seq-find (lambda (x) (string-match-p (rx bos "ef") (symbol-name x)))
custom-enabled-themes))
I also want to know if the current theme is light or not:
(defun my/light-p ()
(ct-light-p (my/color-value 'bg)))
(defun my/dark-p ()
(not (my/light-p)))
Now, let’s get the current color from doom. doom-themes provide doom-color, but I also want to:
- override some colors
- add
black,white,light-*andborder
(defconst my/theme-override
'((doom-palenight
(red . "#f07178"))))
(defvar my/alpha-for-light 7)
(defun my/doom-color (color)
(when (doom-color 'bg)
(let ((override (alist-get (my/doom-p) my/theme-override))
(color-name (symbol-name color))
(is-light (ct-light-p (doom-color 'bg))))
(or
(alist-get color override)
(cond
((eq 'black color)
(if is-light (doom-color 'fg) (doom-color 'bg)))
((eq 'white color)
(if is-light (doom-color 'bg) (doom-color 'fg)))
((eq 'border color)
(if is-light (doom-color 'base0) (doom-color 'base8)))
((string-match-p (rx bos "light-") color-name)
(ct-edit-hsl-l-inc (my/doom-color (intern (substring color-name 6)))
my/alpha-for-light))
(t (doom-color color)))))))
And the same for modus-themes. my/modus-color has to accept the same arguments as I use for my/doom-color for backward compatibility, which requires a bit more tuning.
(defun my/modus-get-base (color)
(let ((base-value (string-to-number (substring (symbol-name color) 4 5)))
(base-start (cadr (assoc 'bg-main (modus-themes--current-theme-palette))))
(base-end (cadr (assoc 'fg-dim (modus-themes--current-theme-palette)))))
(nth base-value (ct-gradient 9 base-start base-end t))))
(defun my/prot-color (color palette)
(let ((is-light (ct-light-p (cadr (assoc 'bg-main palette)))))
(cond
((member color '(black white light-black light-white))
(let ((bg-main (cadr (assoc 'bg-main palette)))
(fg-main (cadr (assoc 'fg-main palette))))
(pcase color
('black (if is-light fg-main bg-main))
('white (if is-light bg-main fg-main))
('light-black (ct-edit-hsl-l-inc
(if is-light fg-main bg-main)
15))
('light-white (ct-edit-hsl-l-inc
(if is-light bg-main fg-main)
15)))))
((or (eq color 'bg))
(cadr (assoc 'bg-main palette)))
((or (eq color 'fg))
(cadr (assoc 'fg-main palette)))
((eq color 'bg-alt)
(cadr (assoc 'bg-dim palette)))
((eq color 'violet)
(cadr (assoc 'magenta-cooler palette)))
((string-match-p (rx bos "base" digit) (symbol-name color))
(my/modus-get-base color))
((string-match-p (rx bos "dark-") (symbol-name color))
(cadr (assoc (intern (format "%s-cooler" (substring (symbol-name color) 5)))
palette)))
((eq color 'grey)
(my/modus-get-base 'base5))
((string-match-p (rx bos "light-") (symbol-name color))
(or
(cadr (assoc (intern (format "%s-intense" (substring (symbol-name color) 6))) palette))
(cadr (assoc (intern (format "bg-%s-intense" (substring (symbol-name color) 6))) palette))))
(t (cadr (assoc color palette))))))
(defun my/modus-color (color)
(my/prot-color color (modus-themes--current-theme-palette)))
(defun my/ef-color (color)
(my/prot-color color (ef-themes--current-theme-palette)))
Test the three functions.
(defconst my/test-colors-list
'(black red green yellow blue magenta cyan white light-black
light-red light-green light-yellow light-blue light-magenta
light-cyan light-white bg fg violet grey base0 base1 base2
base3 base4 base5 base6 base7 base8 border bg-alt))
(defun my/test-colors ()
(interactive)
(let ((buf (generate-new-buffer "*colors-test*")))
(with-current-buffer buf
(insert (format "%-20s %-10s %-10s %-10s" "Color" "Doom" "Modus" "Ef") "\n")
(cl-loop for color in my/test-colors-list
do (insert
(format "%-20s %-10s %-10s %-10s\n"
(prin1-to-string color)
(my/doom-color color)
(my/modus-color color)
(my/ef-color color))))
(special-mode)
(rainbow-mode))
(switch-to-buffer buf)))
Finally, one function to get the value of a color in the current theme.
(defun my/color-value (color)
(cond
((stringp color) (my/color-value (intern color)))
((eq color 'bg-other)
(or (my/color-value 'bg-dim)
(let ((color (my/color-value 'bg)))
(if (ct-light-p color)
(ct-edit-hsl-l-dec color 2)
(ct-edit-hsl-l-dec color 3)))))
((my/doom-p) (my/doom-color color))
((my/modus-p) (my/modus-color color))
((my/ef-p) (my/ef-color color))))
And a few more functions
Custom theme
So, the custom theme:
(deftheme my-theme-1)
A macro to simplify defining custom colors.
(defvar my/my-theme-update-color-params nil)
(defmacro my/use-colors (&rest data)
`(progn
,@(cl-loop for i in data collect
`(setf (alist-get ',(car i) my/my-theme-update-color-params)
(list ,@(cl-loop for (key value) on (cdr i) by #'cddr
append `(,key ',value)))))
(when (and (or (my/doom-p) (my/modus-p)) my/emacs-started)
(my/update-my-theme))))
This macro puts lambdas to my/my-theme-update-colors-hook that updates faces in my-theme-1. Now I have to call this hook:
(defun my/update-my-theme (&rest _)
(interactive)
(cl-loop for (face . values) in my/my-theme-update-color-params
do (custom-theme-set-faces
'my-theme-1
`(,face ((t ,@(cl-loop for (key value) on values by #'cddr
collect key
collect (eval value)))))))
(enable-theme 'my-theme-1))
(unless my/is-termux
(advice-add 'load-theme :after #'my/update-my-theme)
(add-hook 'emacs-startup-hook #'my/update-my-theme))
Defining colors for tab-bar.el:
(my/use-colors
(tab-bar-tab :background (my/color-value 'bg)
:foreground (my/color-value 'yellow)
:underline (my/color-value 'yellow))
(tab-bar :background nil :foreground nil)
(magit-section-secondary-heading :foreground (my/color-value 'blue)
:weight 'bold))
Switch theme
The built-in load-theme does not deactivate the previous theme, so here’s a function that does that:
(defun my/switch-theme (theme)
(interactive
(list (intern (completing-read "Load custom theme: "
(mapcar #'symbol-name
(custom-available-themes))))))
(cl-loop for enabled-theme in custom-enabled-themes
if (not (or (eq enabled-theme 'my-theme-1)
(eq enabled-theme theme)))
do (disable-theme enabled-theme))
(load-theme theme t)
(when current-prefix-arg
(my/regenerate-desktop)))
(my/switch-theme 'ef-duo-light)
Dim inactive buffers
Dim inactive buffers.
(use-package auto-dim-other-buffers
:straight t
:if (display-graphic-p)
:config
(auto-dim-other-buffers-mode t)
(my/use-colors
(auto-dim-other-buffers-face
:background (my/color-value 'bg-other))))
ANSI colors
ansi-color.el is a built-in Emacs package that translates ANSI color escape codes into faces.
It is used by many other packages but doesn’t seem to have an integration with doom-themes, so here is one.
(with-eval-after-load 'ansi-color
(my/use-colors
(ansi-color-black
:foreground (my/color-value 'base2) :background (my/color-value 'base0))
(ansi-color-red
:foreground (my/color-value 'red) :background (my/color-value 'red))
(ansi-color-green
:foreground (my/color-value 'green) :background (my/color-value 'green))
(ansi-color-yellow
:foreground (my/color-value 'yellow) :background (my/color-value 'yellow))
(ansi-color-blue
:foreground (my/color-value 'dark-blue) :background (my/color-value 'dark-blue))
(ansi-color-magenta
:foreground (my/color-value 'violet) :background (my/color-value 'violet))
(ansi-color-cyan
:foreground (my/color-value 'dark-cyan) :background (my/color-value 'dark-cyan))
(ansi-color-white
:foreground (my/color-value 'base8) :background (my/color-value 'base8))
(ansi-color-bright-black
:foreground (my/color-value 'base5) :background (my/color-value 'base5))
(ansi-color-bright-red
:foreground (my/color-value 'orange) :background (my/color-value 'orange))
(ansi-color-bright-green
:foreground (my/color-value 'teal) :background (my/color-value 'teal))
(ansi-color-bright-yellow
:foreground (my/color-value 'yellow) :background (my/color-value 'yellow))
(ansi-color-bright-blue
:foreground (my/color-value 'blue) :background (my/color-value 'blue))
(ansi-color-bright-magenta
:foreground (my/color-value 'magenta) :background (my/color-value 'magenta))
(ansi-color-bright-cyan
:foreground (my/color-value 'cyan) :background (my/color-value 'cyan))
(ansi-color-bright-white
:foreground (my/color-value 'fg) :background (my/color-value 'fg))))
Fonts
Frame font
To install a font, download the font and unpack it into the .local/share/fonts directory. Create one if it doesn’t exist.
As I use nerd fonts elsewhere, I use one in Emacs as well.
References:
(when (display-graphic-p)
(if (x-list-fonts "JetBrainsMono Nerd Font")
(let ((font "-JB -JetBrainsMono Nerd Font-medium-normal-normal-*-17-*-*-*-m-0-iso10646-1"))
(set-frame-font font nil t)
(add-to-list 'default-frame-alist `(font . ,font)))
(message "Install JetBrainsMono Nerd Font!")))
To make the icons work (e.g. in the Doom Modeline), run M-x all-the-icons-install-fonts. The package definition is somewhere later in the config.
Other fonts
(when (display-graphic-p)
(set-face-attribute 'variable-pitch nil :family "Cantarell" :height 1.0)
(set-face-attribute
'italic nil
:family "JetBrainsMono Nerd Font"
:weight 'regular
:slant 'italic))
Ligatures
Ligature setup for the JetBrainsMono font.
(use-package ligature
:straight (:host github :repo "mickeynp/ligature.el")
:if (display-graphic-p)
:config
(ligature-set-ligatures
'(
typescript-mode
typescript-ts-mode
js2-mode
javascript-ts-mode
vue-mode
svelte-mode
scss-mode
php-mode
python-mode
python-ts-mode
js-mode
markdown-mode
clojure-mode
go-mode
sh-mode
haskell-mode
web-mode)
'("--" "---" "==" "===" "!=" "!==" "=!=" "=:=" "=/=" "<="
">=" "&&" "&&&" "&=" "++" "+++" "***" ";;" "!!" "??"
"?:" "?." "?=" "<:" ":<" ":>" ">:" "<>" "<<<" ">>>"
"<<" ">>" "||" "-|" "_|_" "|-" "||-" "|=" "||=" "##"
"###" "####" "#{" "#[" "]#" "#(" "#?" "#_" "#_(" "#:"
"#!" "#=" "^=" "<$>" "<$" "$>" "<+>" "<+" "+>" "<*>"
"<*" "*>" "</" "</>" "/>" "<!--" "<#--" "-->" "->" "->>"
"<<-" "<-" "<=<" "=<<" "<<=" "<==" "<=>" "<==>" "==>" "=>"
"=>>" ">=>" ">>=" ">>-" ">-" ">--" "-<" "-<<" ">->" "<-<"
"<-|" "<=|" "|=>" "|->" "<->" "<~~" "<~" "<~>" "~~" "~~>"
"~>" "~-" "-~" "~@" "[||]" "|]" "[|" "|}" "{|" "[<"
">]" "|>" "<|" "||>" "<||" "|||>" "<|||" "<|>" "..." ".."
".=" ".-" "..<" ".?" "::" ":::" ":=" "::=" ":?" ":?>"
"//" "///" "/*" "*/" "/=" "//=" "/==" "@_" "__"))
(global-ligature-mode t))
Icons
Run M-x all-the-icons-install-fonts at first setup.
(use-package all-the-icons
:if (display-graphic-p)
:straight t)
Text highlight
Highlight indent guides.
(use-package highlight-indent-guides
:straight t
:if (not (or my/remote-server))
:hook ((prog-mode . highlight-indent-guides-mode)
(LaTeX-mode . highlight-indent-guides-mode))
:config
(setq highlight-indent-guides-method 'bitmap)
(setq highlight-indent-guides-bitmap-function 'highlight-indent-guides--bitmap-line))
Rainbow parentheses.
(use-package rainbow-delimiters
:straight t
:hook ((prog-mode . rainbow-delimiters-mode)))
Highlight colors
(use-package rainbow-mode
:commands (rainbow-mode)
:straight t)
Highlight TODOs and stuff
(use-package hl-todo
:hook (prog-mode . hl-todo-mode)
:straight t)
Doom Modeline
A modeline from Doom Emacs. A big advantage of this package is that it just works out of the box and does not require much customization.
I tried a bunch of other options, including spaceline, but in the end, decided that Doom Modeline works best for me.
References:
(use-package doom-modeline
:straight t
;; :if (not (display-graphic-p))
:init
(setq doom-modeline-env-enable-python nil)
(setq doom-modeline-env-enable-go nil)
(setq doom-modeline-buffer-encoding 'nondefault)
(setq doom-modeline-hud t)
(setq doom-modeline-persp-icon nil)
(setq doom-modeline-persp-name nil)
(setq doom-modeline-display-misc-in-all-mode-lines nil)
:config
(setq doom-modeline-minor-modes nil)
(setq doom-modeline-irc nil)
(setq doom-modeline-buffer-state-icon nil)
(doom-modeline-mode 1))
perspective.el
perspective.el is a package that groups buffers in “perspectives”.
tab-bar.el can be configured to behave in a similar way, but I’m too invested in this package already.
One thing I don’t like is that the list perspectives is displayed in the modeline, but I’ll probably look how to move them to the bar at the top of the frame at some point.
(use-package perspective
:straight t
:init
;; (setq persp-show-modestring 'header)
(setq persp-sort 'created)
(setq persp-suppress-no-prefix-key-warning t)
:config
(persp-mode)
(my-leader-def "x" '(:keymap perspective-map :which-key "perspective"))
(general-define-key
:keymaps 'override
:states '(normal emacs)
"gt" 'persp-next
"gT" 'persp-prev
"gn" 'persp-switch
"gN" 'persp-kill)
(general-define-key
:keymaps 'perspective-map
"b" 'persp-ivy-switch-buffer
"x" 'persp-ivy-switch-buffer
"u" 'persp-ibuffer))
Functions to manage buffers
Move the current buffer to a perspective and switch to it.
(defun my/persp-move-window-and-switch ()
(interactive)
(let* ((buffer (current-buffer)))
(call-interactively #'persp-switch)
(persp-set-buffer (buffer-name buffer))
(switch-to-buffer buffer)))
Copy the current buffer to a perspective and switch to it.
(defun my/persp-copy-window-and-switch ()
(interactive)
(let* ((buffer (current-buffer)))
(call-interactively #'persp-switch)
(persp-add-buffer (buffer-name buffer))
(switch-to-buffer buffer)))
Switch to a perspective buffer in other window.
(defun my/persp-ivy-switch-buffer-other-window (arg)
(interactive "P")
(declare-function ivy-switch-buffer-other-window "ivy.el")
(persp--switch-buffer-ivy-counsel-helper
arg
(lambda ()
(ivy-read "Switch to buffer in other window: " #'internal-complete-buffer
:keymap ivy-switch-buffer-map
:preselect (buffer-name (other-buffer (current-buffer)))
:action #'ivy--switch-buffer-other-window-action
:matcher #'ivy--switch-buffer-matcher
:caller 'ivy-switch-buffer))))
Add keybindings to the default map.
(with-eval-after-load 'perspective
(general-define-key
:keymaps 'perspective-map
"m" #'my/persp-move-window-and-switch
"f" #'my/persp-copy-window-and-switch))
Automating perspectives
Out-of-the-box, perspective.el doesn’t feature much (or any) capacity for automation. We’re supposed to manually assign buffers to perspectives, which kinda makes sense… But I still want automation.
First, let’s define a variable with “rules”:
(setq my/perspective-assign-alist '())
One rule looks as follows:
(major-mode workspace-index persp-name)
And a function to act on these rules.
(defvar my/perspective-assign-ignore nil
"If non-nil, ignore `my/perspective-assign'")
(defun my/perspective-assign ()
(when-let* ((_ (not my/perspective-assign-ignore))
(rule (alist-get major-mode my/perspective-assign-alist)))
(let ((workspace-index (car rule))
(persp-name (cadr rule))
(buffer (current-buffer)))
(if (fboundp #'perspective-exwm-assign-window)
(progn
(perspective-exwm-assign-window
:workspace-index workspace-index
:persp-name persp-name)
(when workspace-index
(exwm-workspace-switch workspace-index))
(when persp-name
(persp-switch persp-name)))
(with-perspective persp-name
(persp-set-buffer buffer))
(persp-switch-to-buffer buffer)))))
Also advise to ignore the assignment:
(defun my/perspective-assign-ignore-advice (fun &rest args)
(let ((my/perspective-assign-ignore t))
(apply fun args)))
If EXWM is available, then so is mine perspective-exwm package, which features a convenient procedure called perspective-exwm-assign-window. Otherwise, we just work with perspectives.
Now, we have to put this function somewhere, and after-change-major-mode-hook seems like a perfect place for it.
(add-hook 'after-change-major-mode-hook #'my/perspective-assign)
And here is a simple macro to add rules to the list.
(defmacro my/persp-add-rule (&rest body)
(declare (indent 0))
(unless (= (% (length body) 3) 0)
(error "Malformed body in my/persp-add-rule"))
(let (result)
(while body
(let ((major-mode (pop body))
(workspace-index (pop body))
(persp-name (pop body)))
(push
`(add-to-list 'my/perspective-assign-alist
'(,major-mode . (,workspace-index ,persp-name)))
result)))
`(progn
,@result)))
Also, the logic above works only for cases when the buffer is created. Occasionally, packages run switch-to-buffer, which screws both EXWM workspaces and perspectives; to work around that, I define a macro that runs a command in the context of a given perspective and workspace.
(defmacro my/command-in-persp (command-name persp-name workspace-index &rest args)
`'((lambda ()
(interactive)
(when (and ,workspace-index (fboundp #'exwm-workspace-switch-create))
(exwm-workspace-switch-create ,workspace-index))
(persp-switch ,persp-name)
(delete-other-windows)
,@args)
:wk ,command-name))
This is meant to be used in the definitions of general.el.
Programming
General setup
Treemacs
Treemacs is a rather large & powerful package, but as of now I’ve replaced it with dired. I still have a small configuration because lsp-mode and dap-mode depend on it.
(use-package treemacs
:straight t
:defer t
:config
;; (setq treemacs-follow-mode nil)
;; (setq treemacs-follow-after-init nil)
(setq treemacs-space-between-root-nodes nil)
;; (treemacs-git-mode 'extended)
;; (add-to-list 'treemacs-pre-file-insert-predicates #'treemacs-is-file-git-ignored?)
(general-define-key
:keymaps 'treemacs-mode-map
[mouse-1] #'treemacs-single-click-expand-action
"M-l" #'treemacs-root-down
"M-h" #'treemacs-root-up
"q" #'treemacs-quit)
(general-define-key
:keymaps 'treemacs-mode-map
:states '(normal emacs)
"q" 'treemacs-quit))
(use-package treemacs-evil
:after (treemacs evil)
:straight t)
LSP
LSP-mode provides an IDE-like experience for Emacs - real-time diagnostics, code actions, intelligent autocompletion, etc.
References:
Setup
(use-package lsp-mode
:straight t
:if (not (or my/slow-ssh my/is-termux my/remote-server))
:hook (
(typescript-mode . lsp)
(js-mode . lsp)
(vue-mode . lsp)
(go-mode . lsp)
(svelte-mode . lsp)
;; (python-mode . lsp)
(json-mode . lsp)
(haskell-mode . lsp)
(haskell-literate-mode . lsp)
(java-mode . lsp)
;; (csharp-mode . lsp)
)
:commands lsp
:init
(setq lsp-keymap-prefix nil)
:config
(setq lsp-idle-delay 1)
(setq lsp-eslint-server-command '("node" "/home/pavel/.emacs.d/.cache/lsp/eslint/unzipped/extension/server/out/eslintServer.js" "--stdio"))
(setq lsp-eslint-run "onSave")
(setq lsp-signature-render-documentation nil)
;; (lsp-headerline-breadcrumb-mode nil)
(setq lsp-headerline-breadcrumb-enable nil)
(setq lsp-modeline-code-actions-enable nil)
(setq lsp-modeline-diagnostics-enable nil)
(add-to-list 'lsp-language-id-configuration '(svelte-mode . "svelte")))
(use-package lsp-ui
:straight t
:commands lsp-ui-mode
:config
(setq lsp-ui-doc-delay 2)
(setq lsp-ui-sideline-show-hover nil))
t
Integrations
The only integration left now is treemacs.
Origami should’ve leveraged LSP folding, but it was too unstable at the moment I tried it.
;; (use-package helm-lsp
;; :straight t
;; :commands helm-lsp-workspace-symbol)
;; (use-package origami
;; :straight t
;; :hook (prog-mode . origami-mode))
;; (use-package lsp-origami
;; :straight t
;; :config
;; (add-hook 'lsp-after-open-hook #'lsp-origami-try-enable))
(use-package lsp-treemacs
:after (lsp)
:straight t
:commands lsp-treemacs-errors-list)
Keybindings
(my-leader-def
:infix "l"
"" '(:which-key "lsp")
"d" 'lsp-ui-peek-find-definitions
"r" 'lsp-rename
"u" 'lsp-ui-peek-find-references
"s" 'lsp-ui-find-workspace-symbol
"l" 'lsp-execute-code-action
"e" 'list-flycheck-errors)
UI
I don’t like how some LSPs print the full filename in the progress indicator.
(defun my/lsp--progress-status ()
"Returns the status of the progress for the current workspaces."
(-let ((progress-status
(s-join
"|"
(-keep
(lambda (workspace)
(let ((tokens (lsp--workspace-work-done-tokens workspace)))
(unless (ht-empty? tokens)
(mapconcat
(-lambda ((&WorkDoneProgressBegin :message? :title :percentage?))
(concat (if percentage?
(if (numberp percentage?)
(format "%.0f%%%% " percentage?)
(format "%s%%%% " percentage?))
"")
(let ((msg (url-unhex-string (or message\? title))))
(if (string-match-p "\\`file:///" msg)
(file-name-nondirectory msg)))))
(ht-values tokens)
"|"))))
(lsp-workspaces)))))
(unless (s-blank? progress-status)
(concat lsp-progress-prefix progress-status))))
(with-eval-after-load 'lsp-mode
(advice-add 'lsp--progress-status :override #'my/lsp--progress-status))
Flycheck
A syntax checking extension for Emacs. Integrates with LSP-mode, but can also use various standalone checkers.
References:
(use-package flycheck
:straight t
:config
(global-flycheck-mode)
(setq flycheck-check-syntax-automatically '(save idle-buffer-switch mode-enabled))
;; (add-hook 'evil-insert-state-exit-hook
;; (lambda ()
;; (if flycheck-checker
;; (flycheck-buffer))
;; ))
(advice-add 'flycheck-eslint-config-exists-p :override (lambda() t))
(add-to-list 'display-buffer-alist
`(,(rx bos "*Flycheck errors*" eos)
(display-buffer-reuse-window
display-buffer-in-side-window)
(side . bottom)
(reusable-frames . visible)
(window-height . 0.33))))
General additional config
Have to put this before tree-sitter because I need my/set-smartparens-indent there.
Make smartparens behave the way I like for C-like languages.
(defun my/set-smartparens-indent (mode)
(sp-local-pair mode "{" nil :post-handlers '(("|| " "SPC") ("||\n[i]" "RET")))
(sp-local-pair mode "[" nil :post-handlers '(("|| " "SPC") ("||\n[i]" "RET")))
(sp-local-pair mode "(" nil :post-handlers '(("|| " "SPC") ("||\n[i]" "RET"))))
Override flycheck checker with eslint.
(defun my/set-flycheck-eslint()
"Override flycheck checker with eslint."
(setq-local lsp-diagnostic-package :none)
(setq-local flycheck-checker 'javascript-eslint))
Tree Sitter
Tree-Sitter integration with Emacs 29.
References:
(use-package treesit
:straight (:type built-in)
:if (featurep 'treesit)
:config
(setq treesit-language-source-alist
'((bash "https://github.com/tree-sitter/tree-sitter-bash")
(cmake "https://github.com/uyha/tree-sitter-cmake")
(css "https://github.com/tree-sitter/tree-sitter-css")
(elisp "https://github.com/Wilfred/tree-sitter-elisp")
(go "https://github.com/tree-sitter/tree-sitter-go")
(html "https://github.com/tree-sitter/tree-sitter-html")
(javascript "https://github.com/tree-sitter/tree-sitter-javascript" "master" "src")
(json "https://github.com/tree-sitter/tree-sitter-json")
(make "https://github.com/alemuller/tree-sitter-make")
(markdown "https://github.com/ikatyang/tree-sitter-markdown")
(python "https://github.com/tree-sitter/tree-sitter-python")
(toml "https://github.com/tree-sitter/tree-sitter-toml")
(tsx "https://github.com/tree-sitter/tree-sitter-typescript" "master" "tsx/src")
(typescript "https://github.com/tree-sitter/tree-sitter-typescript" "master" "typescript/src")
(yaml "https://github.com/ikatyang/tree-sitter-yaml")))
(setq treesit-font-lock-level 4)
(setq major-mode-remap-alist
'((typescript-mode . typescript-ts-mode)
(js-mode . javascript-ts-mode)
(python-mode . python-ts-mode)
(json-mode . json-ts-mode)))
(cl-loop for (old-mode . new-mode) in major-mode-remap-alist
do (my/set-smartparens-indent new-mode)
do (set (intern (concat (symbol-name new-mode) "-hook"))
(list
(eval `(lambda ()
(run-hooks
',(intern (concat (symbol-name old-mode) "-hook")))))))))
DAP
An Emacs client for Debugger Adapter Protocol.
Okay, so, I tried to use it many times… Chrome DevTools and ipdb / pudb are just better for me. Maybe I’ll check out RealGUD instead… Will see.
References:
(use-package dap-mode
:straight t
:if (not (or my/remote-server my/is-termux))
:commands (dap-debug)
:init
(setq lsp-enable-dap-auto-configure nil)
:config
(setq dap-ui-variable-length 100)
(setq dap-auto-show-output nil)
(require 'dap-node)
(dap-node-setup)
(require 'dap-chrome)
(dap-chrome-setup)
(require 'dap-python)
(require 'dap-php)
(dap-mode 1)
(dap-ui-mode 1)
(dap-tooltip-mode 1)
(tooltip-mode 1))
Controls
I don’t like some keybindings in the built-in hydra, and there seems to be no easy way to modify the existing hydra, so I create my own. I tried to use transient, but the transient buffer seems to conflict with special buffers of DAP, and hydra does not.
Also, I want the hydra to toggle UI windows instead of just opening them, so here is a macro that defines such functions:
(with-eval-after-load 'dap-mode
(defmacro my/define-dap-ui-window-toggler (name)
`(defun ,(intern (concat "my/dap-ui-toggle-" name)) ()
,(concat "Toggle DAP " name "buffer")
(interactive)
(if-let (window (get-buffer-window ,(intern (concat "dap-ui--" name "-buffer"))))
(quit-window nil window)
(,(intern (concat "dap-ui-" name))))))
(my/define-dap-ui-window-toggler "locals")
(my/define-dap-ui-window-toggler "expressions")
(my/define-dap-ui-window-toggler "sessions")
(my/define-dap-ui-window-toggler "breakpoints")
(my/define-dap-ui-window-toggler "repl"))
And here is the hydra:
(defhydra my/dap-hydra (:color pink :hint nil :foreign-keys run)
"
^Stepping^ ^UI^ ^Switch^ ^Breakpoints^ ^Debug^ ^Expressions
^^^^^^^^------------------------------------------------------------------------------------------------------------------------------------------
_n_: Next _uc_: Controls _ss_: Session _bb_: Toggle _dd_: Debug _ee_: Eval
_i_: Step in _ue_: Expressions _st_: Thread _bd_: Delete _dr_: Debug recent _er_: Eval region
_o_: Step out _ul_: Locals _sf_: Stack frame _ba_: Add _dl_: Debug last _es_: Eval thing at point
_c_: Continue _ur_: REPL _su_: Up stack frame _bc_: Set condition _de_: Edit debug template _ea_: Add expression
_r_: Restart frame _uo_: Output _sd_: Down stack frame _bh_: Set hit count _Q_: Disconnect _ed_: Remove expression
_us_: Sessions _sF_: Stack frame filtered _bl_: Set log message _eu_: Refresh expressions
_ub_: Breakpoints "
("n" dap-next)
("i" dap-step-in)
("o" dap-step-out)
("c" dap-continue)
("r" dap-restart-frame)
("uc" dap-ui-controls-mode)
("ue" my/dap-ui-toggle-expressions)
("ul" my/dap-ui-toggle-locals)
("ur" my/dap-ui-toggle-repl)
("uo" dap-go-to-output-buffer)
("us" my/dap-ui-toggle-sessions)
("ub" my/dap-ui-toggle-breakpoints)
("ss" dap-switch-session)
("st" dap-switch-thread)
("sf" dap-switch-stack-frame)
("sF" my/dap-switch-stack-frame)
("su" dap-up-stack-frame)
("sd" dap-down-stack-frame)
("bb" dap-breakpoint-toggle)
("ba" dap-breakpoint-add)
("bd" dap-breakpoint-delete)
("bc" dap-breakpoint-condition)
("bh" dap-breakpoint-hit-condition)
("bl" dap-breakpoint-log-message)
("dd" dap-debug)
("dr" dap-debug-recent)
("dl" dap-debug-last)
("de" dap-debug-edit-template)
("ee" dap-eval)
("ea" dap-ui-expressions-add)
("er" dap-eval-region)
("es" dap-eval-thing-at-point)
("ed" dap-ui-expressions-remove)
("eu" dap-ui-expressions-refresh)
("q" nil "quit" :color blue)
("Q" dap-disconnect :color red))
(my-leader-def "d" #'my/dap-hydra/body)
UI Fixes
There are some problems with DAP UI in my setup.
First, DAP uses Treemacs buffers quite extensively, and they hide the doom modeline for some reason, so I can’t tell which buffer is active and can’t see borders between buffers.
Second, lines are truncated in some strange way, but calling toggle-truncate-lines seems to fix that.
So I define a macro that creates a function that I can further use in advices.
(defvar my/dap-mode-buffer-fixed nil)
(with-eval-after-load 'dap-mode
(defmacro my/define-dap-tree-buffer-fixer (buffer-var buffer-name)
`(defun ,(intern (concat "my/fix-dap-ui-" buffer-name "-buffer")) (&rest _)
(with-current-buffer ,buffer-var
(unless my/dap-mode-buffer-fixed
(toggle-truncate-lines 1)
(doom-modeline-set-modeline 'info)
(setq-local my/dap-mode-buffer-fixed t)))))
(my/define-dap-tree-buffer-fixer dap-ui--locals-buffer "locals")
(my/define-dap-tree-buffer-fixer dap-ui--expressions-buffer "expressions")
(my/define-dap-tree-buffer-fixer dap-ui--sessions-buffer "sessions")
(my/define-dap-tree-buffer-fixer dap-ui--breakpoints-buffer "breakpoints")
(advice-add 'dap-ui-locals :after #'my/fix-dap-ui-locals-buffer)
(advice-add 'dap-ui-expressions :after #'my/fix-dap-ui-expressions-buffer)
(advice-add 'dap-ui-sessions :after #'my/fix-dap-ui-sessions-buffer)
(advice-add 'dap-ui-breakpoints :after #'my/fix-dap-ui-breakpoints-buffer))
Helper functions
Some helper functions that make debugging with DAP easier.
DAP seems to mess with window parameters from time to time. This function clears “bad” window parameters.
(defun my/clear-bad-window-parameters ()
"Clear window parameters that interrupt my workflow."
(interactive)
(let ((window (get-buffer-window (current-buffer))))
(set-window-parameter window 'no-delete-other-windows nil)))
A function to kill a value from a treemacs node.
(defun my/dap-yank-value-at-point (node)
(interactive (list (treemacs-node-at-point)))
(kill-new (message (plist-get (button-get node :item) :value))))
A function to open a value from a treemacs node in a new buffer.
(defun my/dap-display-value (node)
(interactive (list (treemacs-node-at-point)))
(let ((value (plist-get (button-get node :item) :value)))
(when value
(let ((buffer (generate-new-buffer "dap-value")))
(with-current-buffer buffer
(insert value))
(select-window (display-buffer buffer))))))
Switch to stack frame with filter
One significant improvement over Chrome Inspector for my particular stack is an ability to filter the stack frame list, for instance, to see only frames that relate to my current project.
So, here are functions that customize the filters:
(with-eval-after-load 'dap-mode
(setq my/dap-stack-frame-filters
`(("node_modules,node:internal" . ,(rx (or "node_modules" "node:internal")))
("node_modules" . ,(rx (or "node_modules")))
("node:internal" . ,(rx (or "node:internal")))))
(setq my/dap-stack-frame-current-filter (cdar my/dap-stack-frame-filters))
(defun my/dap-stack-frame-filter-set ()
(interactive)
(setq my/dap-stack-frame-current-filter
(cdr
(assoc
(completing-read "Filter: " my/dap-stack-frame-filters)
my/dap-stack-frame-filters))))
(defun my/dap-stack-frame-filter (frame)
(when-let (path (dap--get-path-for-frame frame))
(not (string-match my/dap-stack-frame-current-filter path)))))
And here is a version of dap-switch-stack-frame that uses the said filter.
(defun my/dap-switch-stack-frame ()
"Switch stackframe by selecting another stackframe stackframes from current thread."
(interactive)
(when (not (dap--cur-session))
(error "There is no active session"))
(-if-let (thread-id (dap--debug-session-thread-id (dap--cur-session)))
(-if-let (stack-frames
(gethash
thread-id
(dap--debug-session-thread-stack-frames (dap--cur-session))))
(let* ((index 0)
(stack-framces-filtered
(-filter
#'my/dap-stack-frame-filter
stack-frames))
(new-stack-frame
(dap--completing-read
"Select active frame: "
stack-framces-filtered
(-lambda ((frame &as &hash "name"))
(if-let (frame-path (dap--get-path-for-frame frame))
(format "%s: %s (in %s)"
(cl-incf index) name frame-path)
(format "%s: %s" (cl-incf index) name)))
nil
t)))
(dap--go-to-stack-frame (dap--cur-session) new-stack-frame))
(->> (dap--cur-session)
dap--debug-session-name
(format "Current session %s is not stopped")
error))
(error "No thread is currently active %s" (dap--debug-session-name (dap--cur-session)))))
Smarter switch to stack frame
- CREDIT: Thanks @yyoncho on the Emacs LSP Discord for helping me with this!
By default, when a breakpoint is hit, dap always pop us the buffer in the active EXWM workspace and in the active perspective. I’d like it to switch to an existing buffer instead.
So first we need to locate EXWM workspace for the file with path:
(defun my/exwm-perspective-find-buffer (path)
"Find a buffer with PATH in all EXWM perspectives.
Returns (<buffer> . <workspace-index>) or nil."
(let* ((buf (cl-loop for buf being buffers
if (and (buffer-file-name buf)
(f-equal-p (buffer-file-name buf) path))
return buf))
(target-workspace
(and buf
(cl-loop for frame in exwm-workspace--list
if (with-selected-frame frame
(cl-loop for persp-name being the hash-keys of (perspectives-hash)
if (member buf (persp-buffers
(gethash persp-name (perspectives-hash))))
return persp-name))
return (cl-position frame exwm-workspace--list)))))
(when target-workspace (cons buf target-workspace))))
And override dap--go-to-stack-frame to take that into account. For some reason, evaluating this before dap-mode doesn’t work.
(defun my/dap--go-to-stack-frame-override (debug-session stack-frame)
"Make STACK-FRAME the active STACK-FRAME of DEBUG-SESSION."
(with-lsp-workspace (dap--debug-session-workspace debug-session)
(when stack-frame
(-let* (((&hash "line" line "column" column "name" name) stack-frame)
(path (dap--get-path-for-frame stack-frame)))
(setf (dap--debug-session-active-frame debug-session) stack-frame)
;; If we have a source file with path attached, open it and
;; position the point in the line/column referenced in the
;; stack trace.
(if (and path (file-exists-p path))
(progn
(let ((exwm-target (my/exwm-perspective-find-buffer path)))
(if exwm-target
(progn
(unless (= (cdr exwm-target) exwm-workspace-current-index)
(exwm-workspace-switch (cdr exwm-target)))
(persp-switch-to-buffer (car exwm-target)))
(select-window (get-mru-window (selected-frame) nil))
(find-file path)))
(goto-char (point-min))
(forward-line (1- line))
(forward-char column))
(message "No source code for %s. Cursor at %s:%s." name line column))))
(run-hook-with-args 'dap-stack-frame-changed-hook debug-session)))
(with-eval-after-load 'exwm
(with-eval-after-load 'dap-mode
(advice-add #'dap--go-to-stack-frame :override #'my/dap--go-to-stack-frame-override)))
;; (advice-remove #'dap--go-to-stack-frame #'my/dap--go-to-stack-frame-override)
Debug templates
Some debug templates I frequently use.
(with-eval-after-load 'dap-mode
(dap-register-debug-template
"Node::Nest.js"
(list :type "node"
:request "attach"
:name "Node::Attach"
:port 9229
:outFiles ["${workspaceFolder}/dist/**/*.js"]
:sourceMaps t
:program "${workspaceFolder}/src/app.ts"))
(dap-register-debug-template
"Node::Babel"
(list :type "node"
:request "attach"
:name "Node::Attach"
:port 9229
:program "${workspaceFolder}/dist/bin/www.js")))
Reformatter
A general-purpose package to run formatters on files. While the most popular formatters are already packaged for Emacs, those that aren’t can be invoked with this package.
(use-package reformatter
:straight t)
copilot
GitHub Copilot is a project of GitHub and OpenAI that provides code completions. It’s somewhat controversial in the Emacs community but I opt in for now.
(defun my/copilot-tab ()
(interactive)
(or (copilot-accept-completion)
(when (my/should-run-emmet-p) (my/emmet-or-tab))
(when (and (eq evil-state 'normal)
(or hs-minor-mode outline-minor-mode))
(evil-toggle-fold)
t)
(indent-for-tab-command)))
(use-package copilot
:straight (:host github :repo "SqrtMinusOne/copilot.el" :files ("dist" "*.el"))
:commands (copilot-mode)
:if (not (or my/remote-server my/is-termux))
:init
(add-hook 'prog-mode-hook #'copilot-mode)
:config
(setq copilot-node-executable "/home/pavel/.guix-extra-profiles/dev/dev/bin/node")
(general-define-key
:keymaps 'company-active-map
"<backtab>" #'my/copilot-tab)
(general-define-key
:keymaps 'copilot-mode-map
"<tab>" #'my/copilot-tab
"M-j" #'copilot-accept-completion-by-line
"M-l" #'copilot-accept-completion-by-word)
(setq copilot-lispy-integration t))
Web development
Configs for various web development technologies I’m using.
Emmet
Emmet is a toolkit which greatly speeds up typing HTML & CSS.
| Type | Note |
|---|---|
| TODO | make expand div[disabled] as <div disabled></div> |
My bit of config here:
- makes
TABthe only key I have to use
(defun my/should-run-emmet-p ()
(and (bound-and-true-p emmet-mode)
(or (and (derived-mode-p 'web-mode)
(member (web-mode-language-at-pos) '("html" "css")))
(not (derived-mode-p 'web-mode)))))
(use-package emmet-mode
:straight t
:hook ((vue-html-mode . emmet-mode)
(svelte-mode . emmet-mode)
(web-mode . emmet-mode)
(html-mode . emmet-mode)
(css-mode . emmet-mode)
(scss-mode . emmet-mode))
:config
(defun my/emmet-or-tab (&optional arg)
(interactive)
(if (my/should-run-emmet-p)
(or (emmet-expand-line arg)
(emmet-go-to-edit-point 1)
(indent-for-tab-command arg))
(indent-for-tab-command arg)))
(general-imap :keymaps 'emmet-mode-keymap
"TAB" 'my/emmet-or-tab
"<backtab>" 'emmet-prev-edit-point))
Prettier
(use-package prettier
:commands (prettier-prettify)
:straight t
:init
(my-leader-def
:keymaps '(js-mode-map
web-mode-map
typescript-mode-map
typescript-ts-mode-map
vue-mode-map
svelte-mode-map)
"rr" #'prettier-prettify))
TypeScript
(use-package typescript-mode
:straight t
:mode "\\.ts\\'"
:init
(add-hook 'typescript-mode-hook #'smartparens-mode)
(add-hook 'typescript-mode-hook #'rainbow-delimiters-mode)
(add-hook 'typescript-mode-hook #'hs-minor-mode)
:config
(my/set-smartparens-indent 'typescript-mode))
JavaScript
(add-hook 'js-mode-hook #'smartparens-mode)
(add-hook 'js-mode-hook #'hs-minor-mode)
(my/set-smartparens-indent 'js-mode)
Jest
(use-package jest-test-mode
:straight t
:hook ((typescript-mode . jest-test-mode)
(js-mode . jest-test-mode))
:config
(my-leader-def
:keymaps 'jest-test-mode-map
:infix "t"
"t" #'jest-test-run-at-point
"d" #'jest-test-debug-run-at-point
"r" #'jest-test-run
"a" #'jest-test-run-all-tests)
(defmacro my/jest-test-with-debug-flags (form)
"Execute FORM with debugger flags set."
(declare (indent 0))
`(let ((jest-test-options (seq-concatenate 'list jest-test-options (list "--runInBand") ))
(jest-test-npx-options (seq-concatenate 'list jest-test-npx-options (list "--node-options" "--inspect-brk"))))
,form))
(defun my/jest-test-debug ()
"Run the test with an inline debugger attached."
(interactive)
(my/jest-test-with-debug-flags
(jest-test-run)))
(defun my/jest-test-debug-rerun-test ()
"Run the test with an inline debugger attached."
(interactive)
(my/jest-test-with-debug-flags
(jest-test-rerun-test)))
(defun my/jest-test-debug-run-at-point ()
"Run the test with an inline debugger attached."
(interactive)
(my/jest-test-with-debug-flags
(jest-test-run-at-point)))
(advice-add #'jest-test-debug :override #'my/jest-test-debug)
(advice-add #'jest-test-debug-rerun-test :override #'my/jest-test-debug-rerun-test)
(advice-add #'jest-test-debug-run-at-point
:override #'my/jest-test-debug-run-at-point))
(defun my/jest-test-run-at-point-copy ()
"Run the top level describe block of the current buffer's point."
(interactive)
(let ((filename (jest-test-find-file))
(example (jest-test-unit-at-point)))
(if (and filename example)
(jest-test-from-project-directory filename
(let ((jest-test-options (seq-concatenate 'list jest-test-options (list "-t" example))))
(kill-new (jest-test-command filename))))
(message jest-test-not-found-message))))
web-mode
web-mode.el is a major mode to edit various web templates.
Trying this one out instead of vue-mode and svelte-mode, because this one seems to have better support for tree-sitter and generally less problems.
Set web-mode-auto-pairs not nil because smartparens already fulfills that role.
(use-package web-mode
:straight t
:commands (web-mode)
:init
(add-to-list 'auto-mode-alist '("\\.svelte\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.vue\\'" . web-mode))
:config
(add-hook 'web-mode-hook 'smartparens-mode)
(add-hook 'web-mode-hook 'hs-minor-mode)
(my/set-smartparens-indent 'web-mode)
(setq web-mode-auto-pairs nil))
Hooking this up with lsp.
(setq my/web-mode-lsp-extensions
`(,(rx ".svelte" eos)
,(rx ".vue" eos)))
(defun my/web-mode-lsp ()
(when (seq-some
(lambda (regex) (string-match-p regex (buffer-name)))
my/web-mode-lsp-extensions)
(lsp-deferred)))
(add-hook 'web-mode-hook #'my/web-mode-lsp)
Vue settings
(defun my/web-mode-vue-setup (&rest _)
(when (string-match-p (rx ".vue" eos) (buffer-name))
(setq-local web-mode-script-padding 0)
(setq-local web-mode-style-padding 0)
(setq-local create-lockfiles nil)
(setq-local web-mode-enable-auto-pairing nil)))
(add-hook 'web-mode-hook 'my/web-mode-vue-setup)
(add-hook 'editorconfig-after-apply-functions 'my/web-mode-vue-setup)
SCSS
(add-hook 'scss-mode-hook #'smartparens-mode)
(add-hook 'scss-mode-hook #'hs-minor-mode)
(my/set-smartparens-indent 'scss-mode)
PHP
(use-package php-mode
:straight t
:mode "\\.php\\'"
:config
(add-hook 'php-mode-hook #'smartparens-mode)
(add-hook 'php-mode-hook #'lsp)
(my/set-smartparens-indent 'php-mode))
LaTeX
AUCTeX
The best LaTeX editing environment I’ve found so far.
References:
(use-package tex
:straight auctex
:defer t
:config
(setq-default TeX-auto-save t)
(setq-default TeX-parse-self t)
(TeX-PDF-mode)
;; Use XeLaTeX & stuff
(setq-default TeX-engine 'xetex)
(setq-default TeX-command-extra-options "-shell-escape")
(setq-default TeX-source-correlate-method 'synctex)
(TeX-source-correlate-mode)
(setq-default TeX-source-correlate-start-server t)
(setq-default LaTeX-math-menu-unicode t)
(setq-default font-latex-fontify-sectioning 1.3)
;; Scale preview for my DPI
(setq-default preview-scale-function 1.4)
(when (boundp 'tex--prettify-symbols-alist)
(assoc-delete-all "--" tex--prettify-symbols-alist)
(assoc-delete-all "---" tex--prettify-symbols-alist))
(add-hook 'LaTeX-mode-hook
(lambda ()
(TeX-fold-mode 1)
(outline-minor-mode)))
(add-to-list 'TeX-view-program-selection
'(output-pdf "Zathura"))
;; Do not run lsp within templated TeX files
(add-hook 'LaTeX-mode-hook
(lambda ()
(unless (string-match "\.hogan\.tex$" (buffer-name))
(lsp))
(setq-local lsp-diagnostic-package :none)
(setq-local flycheck-checker 'tex-chktex)))
(add-hook 'LaTeX-mode-hook #'rainbow-delimiters-mode)
(add-hook 'LaTeX-mode-hook #'smartparens-mode)
(add-hook 'LaTeX-mode-hook #'prettify-symbols-mode)
(my/set-smartparens-indent 'LaTeX-mode)
(require 'smartparens-latex)
(general-nmap
:keymaps '(LaTeX-mode-map latex-mode-map)
"RET" 'TeX-command-run-all
"C-c t" 'orgtbl-mode)
<<init-greek-latex-snippets>>
<<init-english-latex-snippets>>
<<init-math-latex-snippets>>
<<init-section-latex-snippets>>)
Import *.sty
A function to import .sty files to the LaTeX document.
(defun my/list-sty ()
(reverse
(sort
(seq-filter
(lambda (file) (if (string-match ".*\.sty$" file) 1 nil))
(directory-files
(seq-some
(lambda (dir)
(if (and
(f-directory-p dir)
(seq-some
(lambda (file) (string-match ".*\.sty$" file))
(directory-files dir))
) dir nil))
(list "./styles" "../styles/" "." "..")) :full))
(lambda (f1 f2)
(let ((f1b (file-name-base f1))
(f1b (file-name-base f2)))
(cond
((string-match-p ".*BibTex" f1) t)
((and (string-match-p ".*Locale" f1) (not (string-match-p ".*BibTex" f2))) t)
((string-match-p ".*Preamble" f2) t)
(t (string-lessp f1 f2))))))))
(defun my/import-sty ()
(interactive)
(insert
(apply #'concat
(cl-mapcar
(lambda (file) (concat "\\usepackage{" (file-name-sans-extension (file-relative-name file default-directory)) "}\n"))
(my/list-sty)))))
(defun my/import-sty-org ()
(interactive)
(insert
(apply #'concat
(cl-mapcar
(lambda (file) (concat "#+LATEX_HEADER: \\usepackage{" (file-name-sans-extension (file-relative-name file default-directory)) "}\n"))
(my/list-sty)))))
Snippets
| Note | Type |
|---|---|
| TODO | Move yasnippet snippets here? Maybe extract to a separate file? |
Greek letters
Autogenerate snippets for greek letters. I have a few blocks like this because it’s faster & more flexible than usual yasnippet snippets.
Noweb points to the AUCTeX config block.
(setq my/greek-alphabet
'(("a" . "\\alpha")
("b" . "\\beta" )
("g" . "\\gamma")
("d" . "\\delta")
("e" . "\\epsilon")
("z" . "\\zeta")
("h" . "\\eta")
("o" . "\\theta")
("i" . "\\iota")
("k" . "\\kappa")
("l" . "\\lambda")
("m" . "\\mu")
("n" . "\\nu")
("x" . "\\xi")
("p" . "\\pi")
("r" . "\\rho")
("s" . "\\sigma")
("t" . "\\tau")
("u" . "\\upsilon")
("f" . "\\phi")
("c" . "\\chi")
("v" . "\\psi")
("g" . "\\omega")))
(setq my/latex-greek-prefix "'")
;; The same for capitalized letters
(dolist (elem my/greek-alphabet)
(let ((key (car elem))
(value (cdr elem)))
(when (string-equal key (downcase key))
(add-to-list 'my/greek-alphabet
(cons
(capitalize (car elem))
(concat
(substring value 0 1)
(capitalize (substring value 1 2))
(substring value 2)))))))
(yas-define-snippets
'latex-mode
(mapcar
(lambda (elem)
(list (concat my/latex-greek-prefix (car elem)) (cdr elem) (concat "Greek letter " (car elem))))
my/greek-alphabet))
English letters
(setq my/english-alphabet
'("a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z"))
(dolist (elem my/english-alphabet)
(when (string-equal elem (downcase elem))
(add-to-list 'my/english-alphabet (upcase elem))))
(setq my/latex-mathbb-prefix "`")
(yas-define-snippets
'latex-mode
(mapcar
(lambda (elem)
(list (concat my/latex-mathbb-prefix elem) (concat "\\mathbb{" elem "}") (concat "Mathbb letter " elem)))
my/english-alphabet))
Math symbols
(setq my/latex-math-symbols
'(("x" . "\\times")
("." . "\\cdot")
("v" . "\\forall")
("s" . "\\sum_{$1}^{$2}$0")
("p" . "\\prod_{$1}^{$2}$0")
("d" . "\\partial")
("e" . "\\exists")
("i" . "\\int_{$1}^{$2}$0")
("c" . "\\cap")
("u" . "\\cup")
("0" . "\\emptyset")
("^" . "\\widehat{$1}$0")
("_" . "\\overline{$1}$0")
("~" . "\\sim")
("|" . "\\mid")
("_|" . "\\perp")))
(setq my/latex-math-prefix ";")
(yas-define-snippets
'latex-mode
(mapcar
(lambda (elem)
(let ((key (car elem))
(value (cdr elem)))
(list (concat my/latex-math-prefix key) value (concat "Math symbol " value))))
my/latex-math-symbols))
Section snippets
Section snippets. The code turned out to be more complicated than just writing the snippets by hand.
(setq my/latex-section-snippets
'(("ch" . "\\chapter{$1}")
("sec" . "\\section{$1}")
("ssec" . "\\subsection{$1}")
("sssec" . "\\subsubsection{$1}")
("par" . "\\paragraph{$1}}")))
(setq my/latex-section-snippets
(mapcar
(lambda (elem)
`(,(car elem)
,(cdr elem)
,(progn
(string-match "[a-z]+" (cdr elem))
(match-string 0 (cdr elem)))))
my/latex-section-snippets))
(dolist (elem my/latex-section-snippets)
(let* ((key (nth 0 elem))
(value (nth 1 elem))
(desc (nth 2 elem))
(star-index (string-match "\{\$1\}" value)))
(add-to-list 'my/latex-section-snippets
`(,(concat key "*")
,(concat
(substring value 0 star-index)
"*"
(substring value star-index))
,(concat desc " with *")))
(add-to-list 'my/latex-section-snippets
`(,(concat key "l")
,(concat value "%\n\\label{sec:$2}")
,(concat desc " with label")))))
(dolist (elem my/latex-section-snippets)
(setf (nth 1 elem) (concat (nth 1 elem) "\n$0")))
(yas-define-snippets
'latex-mode
my/latex-section-snippets)
Markup & natural languages
Markdown
(use-package markdown-mode
:straight t
:mode "\\.md\\'"
:config
(setq markdown-command
(concat
"pandoc"
" --from=markdown --to=html"
" --standalone --mathjax --highlight-style=pygments"
" --css=pandoc.css"
" --quiet"
))
(setq markdown-live-preview-delete-export 'delete-on-export)
(setq markdown-asymmetric-header t)
(setq markdown-open-command "/home/pavel/bin/scripts/chromium-sep")
(add-hook 'markdown-mode-hook #'smartparens-mode)
(general-define-key
:keymaps 'markdown-mode-map
"M-<left>" 'markdown-promote
"M-<right>" 'markdown-demote))
;; (use-package livedown
;; :straight (:host github :repo "shime/emacs-livedown")
;; :commands livedown-preview
;; :config
;; (setq livedown-browser "qutebrowser"))
Ascii Doc
(use-package adoc-mode
:straight t)
PlantUML
| Guix dependency |
|---|
| plantuml |
(use-package plantuml-mode
:straight t
:mode "(\\.\\(plantuml?\\|uml\\|puml\\)\\'"
:config
(setq plantuml-executable-path "/home/pavel/.guix-extra-profiles/emacs/emacs/bin/plantuml")
(setq plantuml-default-exec-mode 'executable)
(setq plantuml-indent-level 2)
(setq my/plantuml-indent-regexp-return "^\s*return\s+.+$")
(;; (add-to-list
;; 'plantuml-indent-regexp-end
;; my/plantuml-indent-regexp-return)
)
(add-to-list 'auto-mode-alist '("\\.plantuml\\'" . plantuml-mode))
(add-to-list 'auto-mode-alist '("\\.uml\\'" . plantuml-mode))
(add-hook 'plantuml-mode-hook #'smartparens-mode)
(general-nmap
:keymaps 'plantuml-mode-map
"RET" 'plantuml-preview))
Subtitles
A major mode to work with subtitles.
(use-package subed
:straight (:host github :repo "rndusr/subed" :files ("subed/*.el")
:build (:not native-compile))
:config
(general-define-key
:keymaps '(subed-mode-map subed-vtt-mode-map)
:states '(normal)
"gp" #'subed-mpv-toggle-pause))
LTeX
ltex-ls is a tool that wraps LanguageTool into a language server.
It takes maybe 10 seconds to run on my Master’s thesis file (M-x count words: 13453 words and 117566 characters), but it’s totally worth it. And it’s much faster on smaller files. The good thing is that it supports markup syntaxes like Org and Markdown, whereas LanguageTool by itself produces a lot of false positives on these files.
It shouldn’t be too hard to package that for guix, but I’ve installed the nix version for now.
(use-package lsp-ltex
:straight t
:after (lsp)
:init
(setq lsp-ltex-version "15.2.0")
(setq lsp-ltex-check-frequency "save"))
A function to switch the current language.
(defun my/ltex-lang ()
(interactive)
(setq lsp-ltex-language (completing-read
"Language: "
'("en-US" "ru-RU" "de-DE")))
(lsp-workspace-restart (lsp--read-workspace)))
Check whether it’s necessary to run LTeX:
(defun my/ltex-need-p ()
(let ((file-name (buffer-file-name)))
(cond
((null file-name) nil)
((string-match-p (rx "/home/pavel/" (+ alnum) ".org" eos) file-name) nil)
((string-match-p (rx (literal org-directory) "/" (or "roam" "inbox-notes" "literature-notes" "journal")) file-name) t)
((string-match-p (rx (literal org-directory)) file-name) nil)
((string-match-p (rx (literal (expand-file-name user-emacs-directory))) file-name) nil)
(t t))))
To use it in text-mode-hook
(defun my/text-mode-lsp-maybe ()
(when (my/ltex-need-p)
(lsp)))
(add-hook 'text-mode-hook #'my/text-mode-lsp-maybe)
LanguageTool
LanguageTool is a great offline spell checker. For some reason, the download link is nowhere to be found on the home page, so it is listed in the references as well.
References:
(use-package langtool
:straight t
:commands (langtool-check)
:config
(setq langtool-language-tool-server-jar "/home/pavel/bin/LanguageTool-5.7/languagetool-server.jar")
(setq langtool-mother-tongue "ru")
(setq langtool-default-language "en-US"))
(my-leader-def
:infix "L"
"" '(:which-key "languagetool")
"c" 'langtool-check
"s" 'langtool-server-stop
"d" 'langtool-check-done
"n" 'langtool-goto-next-error
"p" 'langtool-goto-previous-error
"l" 'langtool-correct-buffer)
Reverso
reverso.el is a package of mine that provides Emacs interface for https://reverso.net.
(use-package reverso
:straight (:host github :repo "SqrtMinusOne/reverso.el")
:init
(my-leader-def "ar" #'reverso)
:config
(setq reverso-languages '(russian english german)))
Lisp
Meta Lisp
Some packages for editing various Lisps.
(use-package lispy
:commands (lispy-mode)
:straight t)
(use-package lispyville
:hook (lispy-mode . lispyville-mode)
:straight t)
(sp-with-modes sp-lisp-modes
(sp-local-pair "'" nil :actions nil))
Emacs Lisp
Package Lint
A package that checks for the metadata in Emacs Lisp packages.
(use-package flycheck-package
:straight t
:after flycheck
:config
(flycheck-package-setup))
General settings
(add-hook 'emacs-lisp-mode-hook #'aggressive-indent-mode)
;; (add-hook 'emacs-lisp-mode-hook #'smartparens-strict-mode)
(add-hook 'emacs-lisp-mode-hook #'lispy-mode)
Helper functions
Remove all advice from function. Source: https://emacs.stackexchange.com/questions/24657/unadvise-a-function-remove-all-advice-from-it
(defun advice-unadvice (sym)
"Remove all advices from symbol SYM."
(interactive "aFunction symbol: ")
(advice-mapc (lambda (advice _props) (advice-remove sym advice)) sym))
IELM
(add-hook 'inferior-emacs-lisp-mode-hook #'smartparens-mode)
(my-leader-def "bi" #'ielm)
Common lisp
SLIME
(use-package slime
:straight t
:commands (slime)
:config
(setq inferior-lisp-program "sbcl")
(add-hook 'slime-repl-mode 'smartparens-mode))
General settings
(add-hook 'lisp-mode-hook #'aggressive-indent-mode)
;; (add-hook 'emacs-lisp-mode-hook #'smartparens-strict-mode)
(add-hook 'lisp-mode-hook #'lispy-mode)
Clojure
(use-package clojure-mode
:straight t
:mode "\\.clj[sc]?\\'"
:config
;; (add-hook 'clojure-mode-hook #'smartparens-strict-mode)
(add-hook 'clojure-mode-hook #'lispy-mode)
(add-hook 'clojure-mode-hook #'aggressive-indent-mode))
(use-package cider
:after clojure-mode
:straight t)
Hy
Python requirements:
hyjedhy
(use-package hy-mode
:straight t
:mode "\\.hy\\'"
:config
(add-hook 'hy-mode-hook #'lispy-mode)
(add-hook 'hy-mode-hook #'aggressive-indent-mode))
Scheme
(use-package geiser
:straight t
:commands (geiser run-geiser)
:config
(setq geiser-default-implementation 'guile))
(use-package geiser-guile
:straight t
:after geiser)
(add-hook 'scheme-mode-hook #'aggressive-indent-mode)
(add-hook 'scheme-mode-hook #'lispy-mode)
CLIPS
An honorary Lisp.
(use-package clips-mode
:straight t
:mode "\\.cl\\'"
:disabled t
:config
(add-hook 'clips-mode 'lispy-mode))
Python
ein
ein is a package that allows for running Jupyter notebooks in Emacs.
(use-package ein
:straight t)
pyright
For some reason it doesn’t use pipenv python executable, so here is a small workaround.
(setq my/pipenv-python-alist '())
(defun my/get-pipenv-python ()
(let ((default-directory (projectile-project-root)))
(if (file-exists-p "Pipfile")
(let ((asc (assoc default-directory my/pipenv-python-alist)))
(if asc
(cdr asc)
(let ((python-executable
(string-trim (shell-command-to-string "PIPENV_IGNORE_VIRTUALENVS=1 pipenv run which python 2>/dev/null"))))
(if (string-match-p ".*not found.*" python-executable)
(message "Pipfile found, but not pipenv executable!")
(message (format "Found pipenv python: %s" python-executable))
(add-to-list 'my/pipenv-python-alist (cons default-directory python-executable))
python-executable))))
"python")))
(use-package lsp-pyright
:straight t
:defer t
:if (not my/slow-ssh)
:hook (python-mode . (lambda ()
(require 'lsp-pyright)
(setq-local lsp-pyright-python-executable-cmd (my/get-pipenv-python))
(lsp))))
(add-hook 'python-mode-hook #'smartparens-mode)
(add-hook 'python-mode-hook #'hs-minor-mode)
pipenv
Pipenv is a package manager for Python.
Automatically creates & manages virtualenvs and stores data in Pipfile and Pipfile.lock (like npm’s package.json and package-lock.json).
(use-package pipenv
:straight t
:hook (python-mode . pipenv-mode)
:if (not my/slow-ssh)
:init
(setq
pipenv-projectile-after-switch-function
#'pipenv-projectile-after-switch-extended))
OFF (OFF) yapf
yapf is a formatter for Python files.
| Guix dependency |
|---|
| python-yapf |
References:
(use-package yapfify
:straight (:repo "JorisE/yapfify" :host github)
:disabled
:commands (yapfify-region
yapfify-buffer
yapfify-region-or-buffer
yapf-mode))
Global config:
[style]
based_on_style = facebook
column_limit = 80
black
black is a formatter for Python files.
| Guix dependency |
|---|
| python-black |
(use-package python-black
:straight t
:commands (python-black-buffer)
:config
(setq python-black-command "black"))
isort
isort is a Python package to sort Python imports.
| Guix dependency |
|---|
| python-isort |
References:
(use-package py-isort
:straight t
:commands (py-isort-buffer py-isort-region))
The following binding calls yapf & isort on the buffer
(my-leader-def
:keymaps 'python-mode-map
"rr" (lambda ()
(interactive)
(save-excursion
(unless (and (fboundp #'org-src-edit-buffer-p) (org-src-edit-buffer-p))
(py-isort-buffer))
(python-black-buffer))))
sphinx-doc
A package to generate sphinx-compatible docstrings.
(use-package sphinx-doc
:straight t
:hook (python-mode . sphinx-doc-mode)
:config
(my-leader-def
:keymaps 'sphinx-doc-mode-map
"rd" 'sphinx-doc))
pytest
pytest is a unit testing framework for Python.
Once again a function to set pytest executable from pipenv.
References:
(defun my/set-pipenv-pytest ()
(setq-local
python-pytest-executable
(concat (my/get-pipenv-python) " -m pytest")))
(use-package python-pytest
:straight t
:commands (python-pytest-dispatch)
:init
(my-leader-def
:keymaps 'python-mode-map
:infix "t"
"t" 'python-pytest-dispatch)
:config
<<override-pytest-run>>
(add-hook 'python-mode-hook #'my/set-pipenv-pytest)
(when (derived-mode-p 'python-mode)
(my/set-pipenv-pytest)))
Fix comint buffer width
For some reason, the default comint output width is way too large.
To fix that, I’ve modified the following function in the python-pytest package.
(cl-defun python-pytest--run-as-comint (&key command)
"Run a pytest comint session for COMMAND."
(let* ((buffer (python-pytest--get-buffer))
(process (get-buffer-process buffer)))
(with-current-buffer buffer
(when (comint-check-proc buffer)
(unless (or compilation-always-kill
(yes-or-no-p "Kill running pytest process?"))
(user-error "Aborting; pytest still running")))
(when process
(delete-process process))
(let ((inhibit-read-only t))
(erase-buffer))
(unless (eq major-mode 'python-pytest-mode)
(python-pytest-mode))
(compilation-forget-errors)
(display-buffer buffer)
(setq command (format "export COLUMNS=%s; %s"
(- (window-width (get-buffer-window buffer)) 5)
command))
(insert (format "cwd: %s\ncmd: %s\n\n" default-directory command))
(setq python-pytest--current-command command)
(when python-pytest-pdb-track
(add-hook
'comint-output-filter-functions
'python-pdbtrack-comint-output-filter-function
nil t))
(run-hooks 'python-pytest-setup-hook)
(make-comint-in-buffer "pytest" buffer "bash" nil "-c" command)
(run-hooks 'python-pytest-started-hook)
(setq process (get-buffer-process buffer))
(set-process-sentinel process #'python-pytest--process-sentinel))))
code-cells
Support for text with magic comments.
| Guix dependency | Disabled |
|---|---|
| python-jupytext | t |
(use-package code-cells
:straight t
:commands (code-cells-mode code-cells-convert-ipynb))
tensorboard
A function to start up TensorBoard.
(setq my/tensorboard-buffer "TensorBoard-out")
(defun my/tensorboard ()
(interactive)
(start-process
"tensorboard"
my/tensorboard-buffer
"tensorboard"
"serve"
"--logdir"
(car (find-file-read-args "Directory: " t)))
(display-buffer my/tensorboard-buffer))
Data serialization
JSON
(use-package json-mode
:straight t
:mode "\\.json\\'"
:config
(add-hook 'json-mode #'smartparens-mode)
(add-hook 'json-mode #'hs-minor-mode)
(my/set-smartparens-indent 'json-mode))
CSV
(use-package csv-mode
:straight t
:disabled
:mode "\\.csv\\'")
YAML
(use-package yaml-mode
:straight t
:mode "\\.yml\\'"
:config
(add-hook 'yaml-mode-hook 'smartparens-mode)
(add-hook 'yaml-mode-hook 'highlight-indent-guides-mode)
(add-to-list 'auto-mode-alist '("\\.yml\\'" . yaml-mode)))
Configuration
.env
(use-package dotenv-mode
:straight t
:mode "\\.env\\..*\\'")
.gitignore
A package to quickly create .gitignore files.
(use-package gitignore-templates
:straight t
:commands (gitignore-templates-insert
gitignore-templates-new-file))
Docker
(use-package dockerfile-mode
:mode "Dockerfile\\'"
:straight t
:config
(add-hook 'dockerfile-mode 'smartparens-mode))
Jenkins
(use-package jenkinsfile-mode
:straight t
:config
(add-hook 'jenkinsfile-mode-hook #'smartparens-mode)
(my/set-smartparens-indent 'jenkinsfile-mode))
crontab
(use-package crontab-mode
:straight t)
nginx
(use-package nginx-mode
:straight t
:config
(my/set-smartparens-indent 'nginx-mode))
HCL
(use-package hcl-mode
:straight t)
Shell
sh
(add-hook 'sh-mode-hook #'smartparens-mode)
fish
(use-package fish-mode
:straight t
:mode "\\.fish\\'"
:config
(add-hook 'fish-mode-hook #'smartparens-mode))
Query languages
SQL
sql-formatter is a nice JavaScript package for pretty-printing SQL queries. It is not packaged for Emacs, so the easiest way to use it seems to be to define a custom formatter via reformatter.
Also, I’ve made a simple function to switch dialects because I often alternate between them.
So far I didn’t find a nice SQL client for Emacs, but I occasionally run SQL queries in Org Mode, so this quite package is handy.
(setq my/sqlformatter-dialect-choice
'("db2" "mariadb" "mysql" "n1ql" "plsql" "postgresql" "redshift" "spark" "sql" "tsql"))
(setq my/sqlformatter-dialect "postgresql")
(defun my/sqlformatter-set-dialect ()
"Set dialect for sql-formatter"
(interactive)
(setq my/sqlformatter-dialect
(completing-read "Dialect: " my/sqlformatter-dialect-choice)))
(reformatter-define sqlformat
:program (executable-find "sql-formatter")
:args `("-l" ,my/sqlformatter-dialect))
(my-leader-def
:keymaps '(sql-mode-map)
"rr" #'sqlformat-buffer)
SPARQL
(use-package sparql-mode
:straight t)
GraphQL
(use-package graphql-mode
:straight t)
Documents
DocView
Don’t know about this.
doc-view doesn’t look great with the default doc-view-resolution of 100. 300 is fine, but then it becomes slow.
(defun my/doc-view-setup ()
(display-line-numbers-mode -1)
(undo-tree-mode -1))
(use-package doc-view
:straight (:type built-in)
:config
(setq doc-view-resolution 300)
(add-hook 'doc-view-mode-hook #'my/doc-view-setup)
(general-define-key
:states '(normal)
:keymaps '(doc-view-mode-map)
"j" #'doc-view-next-line-or-next-page
"k" #'doc-view-previous-line-or-previous-page))
x509
(use-package x509-mode
:straight t)
Java
(use-package lsp-java
:straight t
:after (lsp)
:config
(setq lsp-java-jdt-download-url "https://download.eclipse.org/jdtls/milestones/0.57.0/jdt-language-server-0.57.0-202006172108.tar.gz"))
(add-hook 'java-mode-hook #'smartparens-mode)
;; (add-hook 'java-mode-hook #'hs-minor-mode)
(my/set-smartparens-indent 'java-mode)
Go
(use-package go-mode
:straight t
:mode "\\.go\\'"
:config
(my/set-smartparens-indent 'go-mode)
(add-hook 'go-mode-hook #'smartparens-mode)
(add-hook 'go-mode-hook #'hs-minor-mode))
.NET
C#
| Guix dependencies | Disabled |
|---|---|
| omnisharp | t |
| dotnet | t |
Disabled that for now because it depends on the old tree sitter.
(use-package csharp-mode
:straight t
:mode "\\.cs\\'"
:disabled t
:config
(setq lsp-csharp-server-path (executable-find "omnisharp-wrapper"))
(add-hook 'csharp-mode-hook #'csharp-tree-sitter-mode)
(add-hook 'csharp-tree-sitter-mode-hook #'smartparens-mode)
(add-hook 'csharp-mode-hook #'hs-minor-mode)
(my/set-smartparens-indent 'csharp-tree-sitter-mode))
MSBuild
(use-package csproj-mode
:straight t
:mode "\\.csproj\\'"
:config
(add-hook 'csproj-mode #'smartparens-mode))
Haskell
(use-package haskell-mode
:straight t
:mode "\\.hs\\'")
(use-package lsp-haskell
:straight t
:after (lsp haskell-mode))
nix
(use-package nix-mode
:straight t
:mode "\\.nix\\'"
:config
(add-hook 'nix-mode-hook #'smartparens-mode)
(my/set-smartparens-indent 'nix-mode))
Lua
(use-package lua-mode
:straight t
:mode "\\.lua\\'"
:hook (lua-mode . smartparens-mode))
(my/set-smartparens-indent 'lua-mode)
Org Mode
Org mode is a tool that leverages plain-text files for tasks like making notes, literate programming, task management, etc.
References:
Installation & basic settings
Use the built-in org mode (:type built-in).
(use-package org
:straight (:type built-in)
:if (not my/remote-server)
:defer t
:init
(setq org-directory (expand-file-name "~/30-39 Life/32 org-mode"))
(unless (file-exists-p org-directory)
(mkdir org-directory t))
:config
(setq org-startup-indented (not my/is-termux))
(setq org-return-follows-link t)
(setq org-src-tab-acts-natively nil)
(add-hook 'org-mode-hook 'smartparens-mode)
(add-hook 'org-agenda-mode-hook
(lambda ()
(visual-line-mode -1)
(toggle-truncate-lines 1)
(display-line-numbers-mode 0)))
(add-hook 'org-mode-hook
(lambda ()
(rainbow-delimiters-mode -1))))
Encryption
Setting up org-crypt to encrypt parts of file.
(with-eval-after-load-norem 'org
(require 'org-crypt)
(org-crypt-use-before-save-magic)
(setq org-tags-exclude-from-inheritance '("crypt"))
(setq org-crypt-key "C1EC867E478472439CC82410DE004F32AFA00205"))
This enables encryption for Org segments tagged :crypt:.
Another way to encrypt Org files is to save them with the extension .org.gpg. However, by default EPA always prompts for the key, which is not what I want when there is only one key to select. Hence the following advice:
(defun my/epa--select-keys-around (fun prompt keys)
(if (= (seq-length keys) 1)
keys
(funcall fun prompt keys)))
(with-eval-after-load-norem 'epa
(advice-add #'epa--select-keys :around #'my/epa--select-keys-around))
(unless my/remote-server
(setq epa-file-encrypt-to '("DE004F32AFA00205")))
org-contrib
org-contrib is a package with various additions to Org. I use the following:
ox-extra- extensions for org export
This used to have org-contacts and ol-notmuch at some point, but they have since been migrated to separate repos.
(use-package org-contrib
:straight (org-contrib
:type git
:repo "https://git.sr.ht/~bzg/org-contrib"
:build t)
:after (org)
:if (not my/remote-server)
:config
(require 'ox-extra)
(ox-extras-activate '(latex-header-blocks ignore-headlines)))
ol-notmuch
ol-notmuch is a package that adds Org links to notmuch messages.
(unless (or my/remote-server my/is-termux)
(use-package ol-notmuch
:straight t
:after (org notmuch)))
org-tempo
org-tempo is a convinient package that provides snippets for various org blocks.
(with-eval-after-load 'org
(require 'org-tempo)
(add-to-list 'org-structure-template-alist '("el" . "src emacs-lisp"))
(add-to-list 'org-structure-template-alist '("py" . "src python"))
(add-to-list 'org-structure-template-alist '("sq" . "src sql")))
evil-org
Better integration with evil-mode.
(use-package evil-org
:straight t
:hook (org-mode . evil-org-mode)
:config
(add-hook 'evil-org-mode-hook
(lambda ()
(evil-org-set-key-theme '(navigation insert textobjects additional calendar todo))))
(add-to-list 'evil-emacs-state-modes 'org-agenda-mode)
(require 'evil-org-agenda)
(evil-org-agenda-set-keys))
Support for relative URLs
Source: https://emacs.stackexchange.com/questions/9807/org-mode-dont-change-relative-urls
(defun my/export-rel-url (path desc format)
(cl-case format
(html (format "<a href=\"%s\">%s</a>" path (or desc path)))
(latex (format "\\href{%s}{%s}" path (or desc path)))
(otherwise path)))
(with-eval-after-load 'org
(org-link-set-parameters "rel" :follow #'browse-url :export #'my/export-rel-url))
Literate programing
Python & Jupyter
Use jupyter kernels for Org Mode.
References:
(use-package jupyter
:straight t
:after (org)
:if (not (or my/remote-server my/is-termux)))
Refresh kernelspecs.
Kernelspecs by default are hashed, so even switching Anaconda environments doesn’t change the kernel (i.e. kernel from the first environment is run after the switch to the second one).
(defun my/jupyter-refresh-kernelspecs ()
"Refresh Jupyter kernelspecs"
(interactive)
(jupyter-available-kernelspecs t))
Also, if some kernel wasn’t present at the moment of the load of emacs-jupyter, it won’t be added to the org-src-lang-modes list. E.g. I have Hy kernel installed in a separate Anaconda environment, so if Emacs hasn’t been launched in this environment, I wouldn’t be able to use hy in org-src blocks.
Fortunately, emacs-jupyter provides a function for that problem as well.
(defun my/jupyter-refesh-langs ()
"Refresh Jupyter languages"
(interactive)
(org-babel-jupyter-aliases-from-kernelspecs t))
Hy
(use-package ob-hy
:after (org)
:if (not my/remote-server)
:straight t)
View HTML in browser
Open HTML in the begin_export block with xdg-open.
(setq my/org-view-html-tmp-dir "/tmp/org-html-preview/")
(use-package f
:straight t)
(defun my/org-view-html ()
(interactive)
(let ((elem (org-element-at-point))
(temp-file-path (concat my/org-view-html-tmp-dir (number-to-string (random (expt 2 32))) ".html")))
(cond
((not (eq 'export-block (car elem)))
(message "Not in an export block!"))
((not (string-equal (plist-get (car (cdr elem)) :type) "HTML"))
(message "Export block is not HTML!"))
(t (progn
(f-mkdir my/org-view-html-tmp-dir)
(f-write (plist-get (car (cdr elem)) :value) 'utf-8 temp-file-path)
(start-process "org-html-preview" nil "xdg-open" temp-file-path))))))
PlantUML
(with-eval-after-load 'org
(setq org-plantuml-executable-path "/home/pavel/.guix-extra-profiles/emacs/emacs/bin/plantuml")
(setq org-plantuml-exec-mode 'plantuml)
(add-to-list 'org-src-lang-modes '("plantuml" . plantuml)))
Restclient
restclient.el is an Emacs package to send HTTP requests. ob-restclient provides interaction with Org Babel.
References:
(use-package restclient
:if (not my/remote-server)
:straight t)
(use-package ob-restclient
:after (org restclient)
:if (not my/remote-server)
:straight t)
Org Babel Setup
Enable languages
(with-eval-after-load-norem 'org
(org-babel-do-load-languages
'org-babel-load-languages
`((emacs-lisp . t)
(python . t)
(sql . t)
;; (typescript .t)
(hy . t)
(shell . t)
(plantuml . t)
(octave . t)
,@(unless my/is-termux '((jupyter . t)))
(sparql . t)))
(add-hook 'org-babel-after-execute-hook 'org-redisplay-inline-images))
Use Jupyter block instead of built-in Python.
(with-eval-after-load 'ob-jupyter
(org-babel-jupyter-override-src-block "python")
(org-babel-jupyter-override-src-block "hy"))
Turn of some minor modes in source blocks.
(add-hook 'org-src-mode-hook
(lambda ()
;; (hs-minor-mode -1)
;; (electric-indent-local-mode -1)
;; (rainbow-delimiters-mode -1)
(highlight-indent-guides-mode -1)))
Async code blocks evaluations. Jupyter blocks have a built-in async, so they are set as ignored.
(use-package ob-async
:straight t
:after (org)
:config
(setq ob-async-no-async-languages-alist '("python" "hy" "jupyter-python" "jupyter-octave" "restclient")))
Managing Jupyter kernels
Functions for managing local Jupyter kernels.
my/insert-jupyter-kernel inserts a path to an active Jupyter kernel to the buffer. Useful to quickly write a header like:
#+PROPERTY: header-args:python :session <path-to-kernel>
my/jupyter-connect-repl opens a emacs-jupyter REPL, connected to an active kernel. my/jupyter-qtconsole runs a standalone Jupyter QtConsole.
Requirements: ss
(setq my/jupyter-runtime-folder (expand-file-name "~/.local/share/jupyter/runtime"))
(defun my/get-open-ports ()
(mapcar
#'string-to-number
(split-string (shell-command-to-string "ss -tulpnH | awk '{print $5}' | sed -e 's/.*://'") "\n")))
(defun my/list-jupyter-kernel-files ()
(mapcar
(lambda (file) (cons (car file) (cdr (assq 'shell_port (json-read-file (car file))))))
(sort
(directory-files-and-attributes my/jupyter-runtime-folder t ".*kernel.*json$")
(lambda (x y) (not (time-less-p (nth 6 x) (nth 6 y)))))))
(defun my/select-jupyter-kernel ()
(let ((ports (my/get-open-ports))
(files (my/list-jupyter-kernel-files)))
(completing-read
"Jupyter kernels: "
(seq-filter
(lambda (file)
(member (cdr file) ports))
files))))
(defun my/insert-jupyter-kernel ()
"Insert a path to an active Jupyter kernel into the buffer"
(interactive)
(insert (my/select-jupyter-kernel)))
(defun my/jupyter-connect-repl ()
"Open an emacs-jupyter REPL, connected to a Jupyter kernel"
(interactive)
(jupyter-connect-repl (my/select-jupyter-kernel) nil nil nil t))
(defun my/jupyter-qtconsole ()
"Open Jupyter QtConsole, connected to a Jupyter kernel"
(interactive)
(start-process "jupyter-qtconsole" nil "setsid" "jupyter" "qtconsole" "--existing"
(file-name-nondirectory (my/select-jupyter-kernel))))
I’ve also noticed that there are JSON files left in the runtime folder whenever the kernel isn’t stopped correctly. So here is a cleanup function.
(defun my/jupyter-cleanup-kernels ()
(interactive)
(let* ((ports (my/get-open-ports))
(files (my/list-jupyter-kernel-files))
(to-delete (seq-filter
(lambda (file)
(not (member (cdr file) ports)))
files)))
(when (and (length> to-delete 0)
(y-or-n-p (format "Delete %d files?" (length to-delete))))
(dolist (file to-delete)
(delete-file (car file))))))
Output post-processing
Do not wrap the output in emacs-jupyter
Emacs-jupyter has its own insertion mechanisms, which always prepends output statements with :. That is not desirable in cases where a kernel supports only plain output, e.g. calysto_hy kernel.
So there we have a minor mode that overrides this behavior.
(defun my/jupyter-org-scalar (value)
(cond
((stringp value) value)
(t (jupyter-org-scalar value))))
(define-minor-mode my/emacs-jupyter-raw-output
"Make emacs-jupyter do raw output")
(defun my/jupyter-org-scalar-around (fun value)
(if my/emacs-jupyter-raw-output
(my/jupyter-org-scalar value)
(funcall fun value)))
(with-eval-after-load 'jupyter
(advice-add 'jupyter-org-scalar :around #'my/jupyter-org-scalar-around))
Wrap source code output
A function to remove the :RESULTS: drawer from results. Once again, it’s necessary because emacs-jupyter doesn’t seem to respect :results raw.
(defun my/org-strip-results (data)
(replace-regexp-in-string ":\\(RESULTS\\|END\\):\n" "" data))
And an all-in-one function to:
- prepend
#+NAME:and#+CAPTION:to the source block output. Useful if the output is an image. - strip the :RESULTS: drawer from the output, if necessary
- wrap results in the
srcblock
As for now, it looks sufficient to format source code outputs to get a tolerable LaTeX.
(defun my/org-caption-wrap (data &optional name caption attrs strip-drawer src-wrap)
(let* ((data-s (if (and strip-drawer (not (string-empty-p strip-drawer)))
(my/org-strip-results data)
data))
(drawer-start (if (string-match-p "^:RESULTS:.*" data-s) 10 0)))
(concat
(substring data-s 0 drawer-start)
(and name (not (string-empty-p name)) (concat "#+NAME:" name "\n"))
(and caption (not (string-empty-p caption)) (concat "#+CAPTION:" caption "\n"))
(and attrs (not (string-empty-p attrs)) (concat "#+ATTR_LATEX:" attrs "\n"))
(if (and src-wrap (not (string-empty-p src-wrap)))
(concat "#+begin_src " src-wrap "\n"
(substring data-s drawer-start)
(when (not (string-match-p ".*\n" data-s)) "\n")
"#+end_src")
(substring data-s drawer-start)))))
To use, add the following snippet to the org file:
#+NAME: out_wrap
#+begin_src emacs-lisp :var data="" caption="" name="" attrs="" strip-drawer="" src-wrap="" :tangle no :exports none
(my/org-caption-wrap data name caption attrs strip-drawer src-wrap)
#+end_src
Example usage:
:post out_wrap(name="fig:chart", caption="График", data=*this*)
Apply ANSI color codes
SOURCE: Apply ANSI color escape sequences for Org Babel results
A minor mode to apply ANSI color codes after execution.
(defun my/babel-ansi ()
(when-let ((beg (org-babel-where-is-src-block-result nil nil)))
(save-excursion
(goto-char beg)
(when (looking-at org-babel-result-regexp)
(let ((end (org-babel-result-end))
(ansi-color-context-region nil))
(ansi-color-apply-on-region beg end))))))
(define-minor-mode org-babel-ansi-colors-mode
"Apply ANSI color codes to Org Babel results."
:global t
:after-hook
(if org-babel-ansi-colors-mode
(add-hook 'org-babel-after-execute-hook #'my/babel-ansi)
(remove-hook 'org-babel-after-execute-hook #'my/babel-ansi)))
Executing stuff
A few convinient functions and keybindings to execute things in an org buffer.
First, execute things above and below the point:
(defun my/org-babel-execute-buffer-below (&optional arg)
(interactive "P")
(org-babel-eval-wipe-error-buffer)
(let ((point (point)))
(org-save-outline-visibility t
(org-babel-map-executables nil
(when (>= (point) point)
(if (memq (org-element-type (org-element-context))
'(babel-call inline-babel-call))
(org-babel-lob-execute-maybe)
(org-babel-execute-src-block arg)))))))
(defun my/org-babel-execute-buffer-above (&optional arg)
(interactive "P")
(org-babel-eval-wipe-error-buffer)
(let ((point (point)))
(org-save-outline-visibility t
(org-babel-map-executables nil
(when (<= (point) point)
(if (memq (org-element-type (org-element-context))
'(babel-call inline-babel-call))
(org-babel-lob-execute-maybe)
(org-babel-execute-src-block arg)))))))
Some keybindings:
(with-eval-after-load 'org
(general-define-key
:keymaps 'org-babel-map
"B" #'my/org-babel-execute-buffer-below
"A" #'my/org-babel-execute-buffer-above)
(my-leader-def
:keymaps 'org-mode-map
"SPC b" '(:wk "org-babel")
"SPC b" org-babel-map))
Managing a literate programming project
A few tricks to do literate programming. I actually have only one (sqrt-data), and I’m not convinced in the benefits of the approach…
Anyway, Org files are better off in a separated directory (e.g. org). So I’ve come up with the following solution to avoid manually prefixing the :tangle arguments.
Set up the following argument with the path to the project root:
#+PROPERTY: PRJ-DIR ..
A function to do the prefixing:
(defun my/org-prj-dir (path)
(expand-file-name path (org-entry-get nil "PRJ-DIR" t)))
Example usage is as follows:
:tangle (my/org-prj-dir "sqrt_data/api/__init__.py")
Tools
Various small packages.
Presentations
Doing presentations with org-present.
(use-package hide-mode-line
:straight t
:after (org-present))
(defun my/present-next-with-latex ()
(interactive)
(org-present-next)
(org-latex-preview '(16)))
(defun my/present-prev-with-latex ()
(interactive)
(org-present-prev)
(org-latex-preview '(16)))
(use-package org-present
:straight (:host github :repo "rlister/org-present")
:if (not my/remote-server)
:commands (org-present)
:config
(general-define-key
:keymaps 'org-present-mode-keymap
"<next>" 'my/present-next-with-latex
"<prior>" 'my/present-prev-with-latex)
(setq org-present-mode-hook
(list (lambda ()
(blink-cursor-mode 0)
(org-present-big)
(org-bars-mode -1)
;; (org-display-inline-images)
(org-present-hide-cursor)
(org-present-read-only)
(display-line-numbers-mode 0)
(hide-mode-line-mode +1)
(setq-local org-format-latex-options
(plist-put org-format-latex-options
:scale (* org-present-text-scale my/org-latex-scale 0.5)))
;; (org-latex-preview '(16))
;; TODO ^somehow this stucks at running LaTeX^
(setq-local olivetti-body-width 60)
(olivetti-mode 1))))
(setq org-present-mode-quit-hook
(list (lambda ()
(blink-cursor-mode 1)
(org-present-small)
(org-bars-mode 1)
;; (org-remove-inline-images)
(org-present-show-cursor)
(org-present-read-write)
(display-line-numbers-mode 1)
(hide-mode-line-mode 0)
(setq-local org-format-latex-options (plist-put org-format-latex-options :scale my/org-latex-scale))
(org-latex-preview '(64))
(olivetti-mode -1)
(setq-local olivetti-body-width (default-value 'olivetti-body-width))))))
TOC
Make a TOC inside the org file.
References:
(use-package org-make-toc
:after (org)
:if (not my/remote-server)
:commands
(org-make-toc
org-make-toc-insert
org-make-toc-set
org-make-toc-at-point)
:straight t)
Screenshots
A nice package to make screenshots and insert them to the Org document.
(use-package org-attach-screenshot
:commands (org-attach-screenshot)
:straight t)
Transclusion
A package that implements transclusions in Org Mode, i.e. rendering part of one file inside another file.
(use-package org-transclusion
:after org
:straight (:host github :repo "nobiot/org-transclusion")
:config
(add-to-list 'org-transclusion-extensions 'org-transclusion-indent-mode)
(require 'org-transclusion-indent-mode)
(general-define-key
:keymaps '(org-transclusion-map)
:states '(normal)
"RET" #'org-transclusion-open-source
"gr" #'org-transclusion-refresh)
(general-define-key
:keymaps '(org-mode-map)
:states 'normal
"C-c t a" #'org-transclusion-add
"C-c t A" #'org-transclusion-add-all
"C-c t t" #'org-transclusion-mode))
Drawing
This package is unbelievably good. I would have never thought it’s even possible to have this in Emacs.
(use-package edraw-org
:straight (:host github :repo "misohena/el-easydraw")
:if (and (not my/is-termux) (not my/remote-server))
:after (org)
:config
(edraw-org-setup-default))
Managing tables
I use Org to manage some small tables which I want to process further. So here is a function that saves each table to a CSV file.
(defun my/export-org-tables-to-csv ()
(interactive)
(org-table-map-tables
(lambda ()
(when-let
(name
(plist-get (cadr (org-element-at-point)) :name))
(org-table-export
(concat
(file-name-directory
(buffer-file-name))
name ".csv")
"orgtbl-to-csv")))))
Productivity & Knowledge management
My ongoing effort to get a productivity setup manage something in my life in Org.
Initial inspirations ():
- Nicolas P. Rougier. Get Things Done with Emacs
- Jetro Kuan. Org-mode Workflow
- Alexey Shmalko: How I note
- Rohit Goswami: An Orgmode Note Workflow
Some later reflections (): so, it’s been one year and a half… I’ve tried some things since writing the initial inspiration list.
Org Journal and Org Roam are probably the most relevant packages in my workflow now.
For I’ve ended up doing more or less plain Org files & Org Agenda. I don’t feel I’d extract much benefit from a more “advanced” system, with effort estimation, atomic tasks, etc. Less is more, I guess. Besided, I’m not particularly excited about the part of my life that may require such management.
Neither I felt I was doing anything meaningful with my attempts at regular review workflow. I’ll think what to do with the section a bit latet.
Org Agenda & Project Management
I tried some things for generic project management, including:
- Managing projects in Org Roam
- Syncing with Trello
- Effort estimation & more atomic tasks
- Writing down progress on projects with
org-journal-tags - …
But for now stopped on one .org file for one large project / a few smaller related projects and rather high-level tasks. Don’t feel the need to do more yet.
Agenda & refile files
All my project files live in the /projects directory, so here’s a function to set up org-agenda-files and org-refile-targets accordingly.
Also, my project structure is somewhat chaotic, so I have an .el file in the org directory that defines some of the refile targets.
(defun my/update-org-agenda ()
(interactive)
(let ((project-files
(mapcar
(lambda (f) (concat
org-directory "/projects/"
f))
(seq-filter
(lambda (f) (not (file-directory-p f)))
(directory-files
(concat org-directory "/projects"))))))
(setq org-agenda-files
`("inbox.org"
"misc/habit.org"
"contacts.org"
,@project-files))
(setq org-refile-targets
`(,@(mapcar
(lambda (f) `(,f . (:tag . "refile")))
project-files)))
(when (file-exists-p (concat org-directory "/scripts/refile.el"))
(load-file (concat org-directory "/scripts/refile.el"))
(run-hooks 'my/org-refile-hooks))))
(with-eval-after-load-norem 'org
(setq org-roam-directory (concat org-directory "/roam"))
(my/update-org-agenda)
;; (setq org-default-notes-file (concat org-directory "/notes.org"))
)
Refile settings
(setq org-refile-use-outline-path 'file)
(setq org-outline-path-complete-in-steps nil)
Capture templates & various settings
Settings for Org capture mode. The goal here is to have a non-disruptive process to capture various ideas.
(defun my/generate-inbox-note-name ()
(format
"%s/inbox-notes/%s%s.org"
org-directory
(format-time-string "%Y%m%d%H%M%S")
(let ((note-name (read-string "Note name: ")))
(if (not (string-empty-p note-name))
(string-replace " " "-" (concat "-" (downcase note-name)))
""))))
(setq org-capture-templates
`(("i" "Inbox" entry (file "inbox.org")
,(concat "* TODO %?\n"
"/Entered on/ %U"))
("e" "email" entry (file "inbox.org")
,(concat "* TODO %:from %:subject \n"
"/Entered on/ %U\n"
"/Received on/ %:date-timestamp-inactive\n"
"%a\n"))
("f" "elfeed" entry (file "inbox.org")
,(concat "* TODO %:elfeed-entry-title\n"
"/Entered on/ %U\n"
"%a\n"))
("n" "note" plain (file my/generate-inbox-note-name)
,(concat "#+TODO: PROCESSED(p)\n"
"\n"
"* %?\n"
"/Entered on/ %U"))))
org-ql
org-ql is a package to query the org files. I’ve tried using it for:
- Grabbing done tasks / meetings / etc for review workflow
- Adding Trello tasks into Agenga
None of that worked out, but I’ll keep the package here in case I have some more ideas.
(use-package org-ql
:after (org)
:if (not my/remote-server)
:straight (:fetcher github
:repo "alphapapa/org-ql"
:files (:defaults (:exclude "helm-org-ql.el")))
:init
;; See https://github.com/alphapapa/org-ql/pull/237
(setq org-ql-regexp-part-ts-time
(rx " " (repeat 1 2 digit) ":" (repeat 2 digit)
(optional "-" (repeat 1 2 digit) ":" (repeat 2 digit)))))
Tracking habits
Let’s see how this goes.
References:
org-habit-stats is a pretty nice package. Using my fork until my PR is merged.
(use-package org-habit-stats
:straight (:host github :repo "ml729/org-habit-stats")
:after (org)
:config
(general-define-key
:keymaps '(org-habit-stats-mode-map)
:states '(normal emacs)
"q" #'org-habit-stats-exit
"<" #'org-habit-stats-calendar-scroll-left
">" #'org-habit-stats-calendar-scroll-right
"[" #'org-habit-stats-scroll-graph-left
"]" #'org-habit-stats-scroll-graph-right
"{" #'org-habit-stats-scroll-graph-left-big
"}" #'org-habit-stats-scroll-graph-right-big
"." #'org-habit-stats-view-next-habit
"," #'org-habit-stats-view-previous-habit)
(add-hook 'org-after-todo-state-change-hook 'org-habit-stats-update-properties))
Custom agendas
Some custom agendas to fit my workflow.
See this answer at Emacs StackExchange for filtering the agenda block by tag:
(defun my/org-match-at-point-p (match)
"Return non-nil if headline at point matches MATCH.
Here MATCH is a match string of the same format used by
`org-tags-view'."
(funcall (cdr (org-make-tags-matcher match))
(org-get-todo-state)
(org-get-tags-at)
(org-reduced-level (org-current-level))))
(defun my/org-agenda-skip-without-match (match)
"Skip current headline unless it matches MATCH.
Return nil if headline containing point matches MATCH (which
should be a match string of the same format used by
`org-tags-view'). If headline does not match, return the
position of the next headline in current buffer.
Intended for use with `org-agenda-skip-function', where this will
skip exactly those headlines that do not match."
(save-excursion
(unless (org-at-heading-p) (org-back-to-heading))
(let ((next-headline (save-excursion
(or (outline-next-heading) (point-max)))))
(if (my/org-match-at-point-p match) nil next-headline))))
And the agendas themselves:
(defun my/org-scheduled-get-time ()
(let ((scheduled (org-get-scheduled-time (point))))
(if scheduled
(format-time-string "%Y-%m-%d" scheduled)
"")))
(setq org-agenda-hide-tags-regexp (rx (or "org" "refile" "habit")))
(setq org-agenda-custom-commands
`(("p" "My outline"
((agenda "" ((org-agenda-skip-function '(my/org-agenda-skip-without-match "-habit"))))
(tags-todo "inbox"
((org-agenda-overriding-header "Inbox")
(org-agenda-prefix-format " %i %-12:c")
(org-agenda-hide-tags-regexp ".")))
(tags-todo "+waitlist+SCHEDULED<=\"<+14d>\""
((org-agenda-overriding-header "Waitlist")
(org-agenda-hide-tags-regexp "waitlist")
(org-agenda-prefix-format " %i %-12:c %-12(my/org-scheduled-get-time)")))
(tags-todo "habit+SCHEDULED<=\"<+0d>\""
((org-agenda-overriding-header "Habits")
(org-agenda-prefix-format " %i %-12:c")
(org-agenda-hide-tags-regexp ".")))))))
Alerts
- Me at 10:00: Open Org Agenga oh, there’s a meeting at 15:00
- Me at 14:00: Open Org Agenda oh, there’s a meeting at 15:00
- Me at 14:45: Gotta remember to join in 15 minutes
- Me at 14:55: Gotta remember to join in 5 minutes
- Me at 15:05: Sh*t
Okay, I will set up org-alert some custom alert system.
I want to have multiple warnings, let it be 10 minutes in advance and 1 minute in advance for now.
(setq my/org-alert-notify-times '(600 60))
And IDK if that makes much sense, but I’ll try to avoid re-creating timers. So, here are functions to schedule showing some label at some time and to check whether the label is scheduled:
(setq my/org-alert--alerts (make-hash-table :test #'equal))
(defun my/org-alert--is-scheduled (label time)
"Check if LABEL is scheduled to be shown an TIME."
(gethash (cons label time)
my/org-alert--alerts nil))
(defun my/org-alert--schedule (label time)
"Schedule LABEL to be shown at TIME, unless it's already scheduled."
(unless (my/org-alert--is-scheduled label time)
(puthash (cons label time)
(run-at-time time
nil
(lambda ()
(alert label
:title "PROXIMITY ALERT")))
my/org-alert--alerts)))
And unschedule items that need to be unscheduled:
(defun my/org-alert-cleanup (&optional keys)
"Unschedule items that do not appear in KEYS.
KEYS is a list of cons cells like (<label> . <time>)."
(let ((existing-hash (make-hash-table :test #'equal)))
(cl-loop for key in keys
do (puthash key t existing-hash))
(cl-loop for key being the hash-keys of my/org-alert--alerts
unless (gethash key existing-hash)
do (progn
(cancel-timer (gethash key my/org-alert--alerts))
(remhash key my/org-alert--alerts)))))
And a function to extract the required items with org-ql-query and schedule them:
(defun my/org-alert--update-today-alerts ()
(let ((items
(org-ql-query
:select 'element
:from (org-agenda-files)
:where `(and
(todo "FUTURE")
(ts-active :from ,(format-time-string "%Y-%m-%d %H:%M")
:to ,(format-time-string
"%Y-%m-%d"
(time-add
(current-time)
(* 60 60 24)))
:with-time t))
:order-by 'date))
scheduled-keys)
(cl-loop
for item in items
for scheduled = (org-timestamp-to-time (org-element-property :scheduled item))
do (cl-loop
for before-time in my/org-alert-notify-times
for label = (format "%s at %s [%s min. remaining]"
(org-element-property :raw-value item)
(format-time-string "%H:%M" scheduled)
(number-to-string (/ before-time 60)))
for time = (time-convert
(+ (time-convert scheduled 'integer) (- before-time)))
do (progn
(my/org-alert--schedule label time)
(push (cons label time) scheduled-keys))))
(my/org-alert-cleanup scheduled-keys)))
Let’s wrap it into a minor mode:
(setq my/org-alert--timer nil)
(define-minor-mode my/org-alert-mode ()
:global t
:after-hook
(if my/org-alert-mode
(progn
(my/org-alert--update-today-alerts)
(when (timerp my/org-alert--timer)
(cancel-timer my/org-alert--timer))
(setq my/org-alert--timer
(run-at-time 600 t #'my/org-alert--update-today-alerts)))
(when (timerp my/org-alert--timer)
(cancel-timer my/org-alert--timer))
(my/org-alert-cleanup)))
I don’t have any idea why, but evaluating (my/org-alert-mode) just after org breaks font-lock after I try to open inbox.org. emacs-startup-hook, however, works fine.
(with-eval-after-load 'org
(if my/emacs-started
(my/org-alert-mode)
(add-hook 'emacs-startup-hook #'my/org-alert-mode)))
Other settings
Hotkeys
(my-leader-def
:infix "o"
"" '(:which-key "org-mode")
"c" 'org-capture
"a" 'org-agenda)
Effort estimation
(with-eval-after-load-norem 'org
(add-to-list 'org-global-properties
'("Effort_ALL" . "0 0:05 0:10 0:15 0:30 0:45 1:00 2:00 4:00")))
Log DONE time
(setq org-log-done 'time)
Copying records
I like to add numbers to repeating events, like meetings. E.g.
* Job meeting 62
SCHEDULED: <2022-11-13 16:00>
* Job meeting 63
SCHEDULED: <2022-11-13 16:00>
...
Naturally, I want a way to copy such records. Org Mode already has a function called org-clone-subtree-with-time-shift, that does everything I want except for updating the numbers.
Unfortunately, I see no way to advise the original function, so here’s my version that makes use of evil-numbers:
(defun my/org-clone-subtree-with-time-shift (n &optional shift)
(interactive "nNumber of clones to produce: ")
(unless (wholenump n) (user-error "Invalid number of replications %s" n))
(when (org-before-first-heading-p) (user-error "No subtree to clone"))
(let* ((beg (save-excursion (org-back-to-heading t) (point)))
(end-of-tree (save-excursion (org-end-of-subtree t t) (point)))
(shift
(or shift
(if (and (not (equal current-prefix-arg '(4)))
(save-excursion
(goto-char beg)
(re-search-forward org-ts-regexp-both end-of-tree t)))
(read-from-minibuffer
"Date shift per clone (e.g. +1w, empty to copy unchanged): ")
""))) ;No time shift
(doshift
(and (org-string-nw-p shift)
(or (string-match "\\`[ \t]*\\([+-]?[0-9]+\\)\\([hdwmy]\\)[ \t]*\\'"
shift)
(user-error "Invalid shift specification %s" shift)))))
(goto-char end-of-tree)
(unless (bolp) (insert "\n"))
(let* ((end (point))
(template (buffer-substring beg end))
(shift-n (and doshift (string-to-number (match-string 1 shift))))
(shift-what (pcase (and doshift (match-string 2 shift))
(`nil nil)
("h" 'hour)
("d" 'day)
("w" (setq shift-n (* 7 shift-n)) 'day)
("m" 'month)
("y" 'year)
(_ (error "Unsupported time unit"))))
(nmin 1)
(nmax n)
(n-no-remove -1)
(org-id-overriding-file-name (buffer-file-name (buffer-base-buffer)))
(idprop (org-entry-get beg "ID")))
(when (and doshift
(string-match-p "<[^<>\n]+ [.+]?\\+[0-9]+[hdwmy][^<>\n]*>"
template))
(delete-region beg end)
(setq end beg)
(setq nmin 0)
(setq nmax (1+ nmax))
(setq n-no-remove nmax))
(goto-char end)
(cl-loop for n from nmin to nmax do
(insert
;; Prepare clone.
(with-temp-buffer
(insert template)
(org-mode)
(goto-char (point-min))
(org-show-subtree)
(and idprop (if org-clone-delete-id
(org-entry-delete nil "ID")
(org-id-get-create t)))
(unless (= n 0)
(while (re-search-forward org-clock-line-re nil t)
(delete-region (line-beginning-position)
(line-beginning-position 2)))
(goto-char (point-min))
(while (re-search-forward org-drawer-regexp nil t)
(org-remove-empty-drawer-at (point))))
(goto-char (point-min))
(when doshift
(while (re-search-forward org-ts-regexp-both nil t)
(org-timestamp-change (* n shift-n) shift-what))
(save-excursion
(goto-char (point-min))
(evil-numbers/inc-at-pt n (point-min)))
(unless (= n n-no-remove)
(goto-char (point-min))
(while (re-search-forward org-ts-regexp nil t)
(save-excursion
(goto-char (match-beginning 0))
(when (looking-at "<[^<>\n]+\\( +[.+]?\\+[0-9]+[hdwmy]\\)")
(delete-region (match-beginning 1) (match-end 1)))))))
(buffer-string)))))
(goto-char beg)))
My addition to that is the form with evil-numbers/inc-at-pt.
Org Journal
org-journal is a package for maintaining a journal in org mode.
This part turned out to be great. I even consulted the journal a few times to check if something actually happened, which makes me uneasy now that I think about it…
One issue I found is that it’s kinda hard to find anything in the journal, and I’m not eager to open the journal for a random date anyway. So I’ve made a package called org-journal-tags.
My initial desire was to be able to query the journal for my thoughts on a particular subject or theme, for progress on some project, or for records related to some person… Which is kinda useful, although not quite as much as I expected it to be. Relatively fast querying of the journal is also nice.
The section I named “on this day” turned out to be particularly interesting, as it kinda allowed me to connect with past versions of myself.
And it was interesting to find the reinforcement effect of checked dates on the calendar.
(use-package org-journal
:straight t
:if (not my/remote-server)
:init
(my-leader-def
:infix "oj"
"" '(:which-key "org-journal")
"j" 'org-journal-new-entry
"o" 'org-journal-open-current-journal-file
"s" 'org-journal-tags-status)
:after org
:config
(setq org-journal-dir (concat org-directory "/journal"))
(setq org-journal-file-type 'weekly)
(setq org-journal-file-format "%Y-%m-%d.org")
(setq org-journal-date-format "%A, %Y-%m-%d")
(setq org-journal-enable-encryption t))
So, org-journal-tags is my package that implements a tagging system for org-journal.
(use-package org-journal-tags
:straight (:host github :repo "SqrtMinusOne/org-journal-tags")
:after (org-journal)
:if (not my/remote-server)
:config
(org-journal-tags-autosync-mode)
(general-define-key
:keymaps 'org-journal-mode-map
"C-c t" #'org-journal-tags-insert-tag))
Also, I want to add some extra information to the journal. Here’s a functionality to get the current weather from wttr.in:
(use-package request
:straight t
:defer t)
(defvar my/weather-last-time 0)
(defvar my/weather-value nil)
(defun my/weather-get ()
(when (> (- (time-convert nil 'integer) my/weather-last-time)
(* 60 5))
(request (format "https://wttr.in/%s" my/location)
:params '(("format" . "%l:%20%C%20%t%20%w%20%p"))
:sync t
:parser (lambda () (url-unhex-string (buffer-string)))
:timeout 10
:success (cl-function
(lambda (&key data &allow-other-keys)
(setq my/weather-value data)
(setq my/weather-last-time (time-convert nil 'integer))))
:error
(cl-function (lambda (&rest args &key error-thrown &allow-other-keys)
(message "Got error: %S" error-thrown)))))
my/weather-value)
Let’s also try to log the current mood:
(defun my/get-mood ()
(let* ((crm-separator " ")
(crm-local-completion-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map crm-local-completion-map)
(define-key map " " 'self-insert-command)
map))
(ivy-prescient-sort-commands nil))
(mapconcat
#'identity
(completing-read-multiple
"How do you feel: "
my/mood-list)
" ")))
And here’s the function that creates a drawer with such information. At the moment, it’s:
- Emacs version
- Hostname
- Location
- Weather
- Current EMMS track
- Current mood
(defun my/set-journal-header ()
(org-set-property "Emacs" emacs-version)
(org-set-property "Hostname" system-name)
(org-journal-tags-prop-apply-delta :add (list (format "host.%s" (system-name))))
(when (boundp 'my/location)
(org-set-property "Location" my/location)
(when-let ((weather (my/weather-get)))
(org-set-property "Weather" weather)))
(when (boundp 'my/loc-tag)
(org-journal-tags-prop-apply-delta :add (list my/loc-tag)))
(when (fboundp 'emms-playlist-current-selected-track)
(let ((track (emms-playlist-current-selected-track)))
(when track
(let ((album (cdr (assoc 'info-album track)))
(artist (or (cdr (assoc 'info-albumartist track))
(cdr (assoc 'info-album track))))
(title (cdr (assoc 'info-title track)))
(string ""))
(when artist
(setq string (concat string "[" artist "] ")))
(when album
(setq string (concat string album " - ")))
(when title
(setq string (concat string title)))
(when (> (length string) 0)
(org-set-property "EMMS_Track" string))))))
(when-let (mood (my/get-mood))
(org-set-property "Mood" mood)))
(add-hook 'org-journal-after-entry-create-hook
#'my/set-journal-header)
Bibliography
I use Zotero to manage my bibliograhy.
There is a Zotero extension called better bibtex, which allows for having one bibtex file that is always syncronized with the library. That comes quite handy for Emacs integration.
org-ref
org-ref is an excellent package by John Kitchin that provides support for managing citations and references in Org Mode.
It may have become less relevant since org-cite was merged into plain Org, but org-ref is still just as usable.
As of now, this package loads Helm on start. To avoid this, I have to exclude Helm from the Package-requires in the org-ref.el file. I haven’t found a way to do this without modifying the package source yet.
There’s a package called org-roam-bibtex that allows to keep literature notes in org-roam and access them from org-ref, but as for now I store literature notes separately.
(use-package org-ref
:straight (:files (:defaults "citeproc" (:exclude "*helm*")))
:if (not my/remote-server)
:init
(setq bibtex-dialect 'biblatex)
(setq bibtex-completion-bibliography '("~/30-39 Life/32 org-mode/library.bib"))
(setq bibtex-completion-library-path '("~/30-39 Life/33 Library"))
(setq bibtex-completion-notes-path "~/Documents/org-mode/literature-notes")
(setq bibtex-completion-display-formats
'((t . "${author:36} ${title:*} ${note:10} ${year:4} ${=has-pdf=:1}${=type=:7}")))
(setq bibtex-completion-pdf-open-function
(lambda (file)
(start-process "dired-open" nil
"xdg-open" (file-truename file))))
:after (org)
:config
(with-eval-after-load 'ivy-bibtex
(require 'org-ref-ivy))
(general-define-key
:keymaps 'org-mode-map
"C-c l" #'org-ref-insert-link-hydra/body)
(general-define-key
:keymaps 'bibtex-mode-map
"M-RET" 'org-ref-bibtex-hydra/body))
ivy-bibtex
ivy-bibtex is an Ivy interface to bibtex. It uses the same configuration variables as org-ref, or rather, both packages use variables from the built-in bibtex.el
(use-package ivy-bibtex
:after (org-ref)
:straight t
:init
(my-leader-def "fB" 'ivy-bibtex))
(add-hook 'bibtex-mode 'smartparens-mode)
Org Roam
org-roam is a plain-text knowledge database.
Things I tried with Org Roam:
- Managing projects. Ended up preferring plain Org.
- Writing a journal with
org-roam-dailies. Didn’t work out as I expected, so I’ve madeorg-journal-tagsafter I understood better what I want.
Regardless, it turned out to be great for managing Zettelkasten, which is the original purpose of the package anyway. I didn’t expect to ever get into something like this, but I guess I was wrong.
Some resources that helped me along the way (and still help):
- Sönke Ahrens’ book “How to take smart notes”
- https://zettelkasten.de/ - a lot of useful stuff here, especially in the “Getting Started” section.
- System Crafters Live! - Can You Apply Zettelkasten in Emacs?
Basic package configuration
| Guix dependency |
|---|
| emacs-emacsql-sqlite3 |
| graphviz |
About installing the package on Guix (CREDIT: thanks @Ashraz on the SystemCrafters discord)
So, for all those interested: unfortunately, org-roam (or rather emacsql-sqlite) cannot compile the sqlite.c and emacsql.c due to missing headers (linux/falloc.h) on Guix. You would have to properly set all the include paths on Guix, and also adjust the PATH to have gcc actually find as later on in the compilation process.
Instead, you should remove all Org-Roam related packages from your Emacs installation (via M-x package-delete org-roam RET and M-x package-autoremove RET y RET) and then use the Guix package called emacs-org-roam.
References:
(use-package emacsql-sqlite
:defer t
:if (not my/remote-server)
:straight (:type built-in))
(use-package org-roam
:straight (:host github :repo "org-roam/org-roam"
:files (:defaults "extensions/*.el"))
:if (not my/remote-server)
:after org
:init
(setq org-roam-file-extensions '("org"))
(setq org-roam-v2-ack t)
(setq orb-insert-interface 'ivy-bibtex)
(setq org-roam-node-display-template (concat "${title:*} " (propertize "${tags:10}" 'face 'org-tag)))
:config
(org-roam-setup)
(require 'org-roam-protocol))
Capture templates
Capture templates for org-roam-capture. As for now, nothing too complicated here.
(setq org-roam-capture-templates
`(("d" "default" plain "%?"
:if-new (file+head "%<%Y%m%d%H%M%S>-${slug}.org" "#+title: ${title}\n")
:unnarrowed t)
("e" "encrypted" plain "%?"
:if-new (file+head "%<%Y%m%d%H%M%S>-${slug}.org.gpg" "#+title: ${title}\n")
:unnarrowed t)))
Keybindings
A set of keybindings to quickly access things in Org Roam.
(with-eval-after-load 'org-roam
(my-leader-def
:infix "or"
"" '(:which-key "org-roam")
"i" 'org-roam-node-insert
"r" 'org-roam-node-find
"g" 'org-roam-graph
"c" 'org-roam-capture
"b" 'org-roam-buffer-toggle)
(general-define-key
:keymaps 'org-roam-mode-map
:states '(normal)
"TAB" #'magit-section-toggle
"q" #'quit-window
"k" #'magit-section-backward
"j" #'magit-section-forward
"gr" #'revert-buffer
"RET" #'org-roam-buffer-visit-thing))
(with-eval-after-load 'org
(my-leader-def
:keymap 'org-mode-map
:infix "or"
"t" 'org-roam-tag-add
"T" 'org-roam-tag-remove
"s" 'org-roam-db-autosync-mode)
(general-define-key
:keymap 'org-mode-map
"C-c i" 'org-roam-node-insert))
Backlinks count display
Occasionally I want to see how many backlinks a particular page has.
This idea came to my mind because I often write a note in the following form:
According to <This Person>, <some opinion>
And I have a note called #Personalities that looks like that:
Philosophers:
- <This Person>
- <That Person>
- <Another Person>
...
So I’m curious to see how many notes I have linked to each:
Philosophers:
- <This Person> [30]
- <That Person> [40]
- <Another Person> [20]
...
The obvious way to implement that is via overlays:
(defface my/org-roam-count-overlay-face
'((t :inherit tooltip))
"Face for Org Roam count overlay.")
(defun my/org-roam--count-overlay-make (pos count)
(let* ((overlay-value (concat
" "
(propertize
(format "%d" count)
'face 'my/org-roam-count-overlay-face)
" "))
(ov (make-overlay pos pos (current-buffer) nil t)))
(overlay-put ov 'roam-backlinks-count count)
(overlay-put ov 'priority 1)
(overlay-put ov 'after-string overlay-value)))
Also a function to remove them:
(defun my/org-roam--count-overlay-remove-all ()
(dolist (ov (overlays-in (point-min) (point-max)))
(when (overlay-get ov 'roam-backlinks-count)
(delete-overlay ov))))
Now we can iterate over all roam links in the buffer, count the number of backlinks via org-roam-db-query and invoke my/org-roam--count-overlay-make if that number is greater than zero:
(defun my/org-roam--count-overlay-make-all ()
(my/org-roam--count-overlay-remove-all)
(org-element-map (org-element-parse-buffer) 'link
(lambda (elem)
(when (string-equal (org-element-property :type elem) "id")
(let* ((id (org-element-property :path elem))
(count (caar
(org-roam-db-query
[:select (funcall count source)
:from links
:where (= dest $s1)
:and (= type "id")]
id))))
(when (< 0 count)
(my/org-roam--count-overlay-make
(org-element-property :end elem)
count)))))))
And a minor mode to toggle the display in a particular org-roam buffer.
(define-minor-mode my/org-roam-count-overlay-mode
"Display backlink count for org-roam links."
:after-hook
(if my/org-roam-count-overlay-mode
(progn
(my/org-roam--count-overlay-make-all)
(add-hook 'after-save-hook #'my/org-roam--count-overlay-make-all nil t))
(my/org-roam--count-overlay-remove-all)
(remove-hook 'after-save-hook #'my/org-roam--count-overlay-remove-all t)))
Org Roam UI
A browser frontend to visualize the Roam database as a graph.
Actually, I don’t find this quite as useful as structure nodes, because over time my graph grew somewhat convoluted. But it looks impressive.
(use-package org-roam-ui
:straight (:host github :repo "org-roam/org-roam-ui" :branch "main" :files ("*.el" "out"))
:if (not my/remote-server)
:after org-roam
;; :hook (org-roam . org-roam-ui-mode)
:init
(my-leader-def "oru" #'org-roam-ui-mode))
Org Roam Protocol
Open links such as org-protocol:// from browser. Run M-x server-start for org-protocol to work.
[Desktop Entry]
Name=Org-Protocol
Exec=emacsclient %u
Icon=emacs-icon
Type=Application
Terminal=false
MimeType=x-scheme-handler/org-protocol
Don’t forget to run the following after setup:
xdg-mime default org-protocol.desktop x-scheme-handler/org-protocol
Deft
Deft is an Emacs package to quickly find notes. I use it as a full-text search engine for org-roam.
(use-package deft
:straight t
:if (not my/remote-server)
:commands (deft)
:after (org)
:init
(my-leader-def "ord" #'deft)
:config
(setq deft-directory org-roam-directory)
(setq deft-recursive t)
(setq deft-use-filter-string-for-filename t)
(add-hook 'deft-mode-hook
(lambda () (display-line-numbers-mode -1)))
(general-define-key
:keymaps 'deft-mode-map
:states '(normal motion)
"q" #'quit-window
"r" #'deft-refresh
"s" #'deft-filter
"d" #'deft-filter-clear
"y" #'deft-filter-yank
"t" #'deft-toggle-incremental-search
"o" #'deft-toggle-sort-method))
The default deft view does not look that great because of various Roam metadata. To improve that, we can tweak deft-strip-summary-regexp:
(setq deft-strip-summary-regexp
(rx (or
(: ":PROPERTIES:" (* anything) ":END:")
(: "#+" (+ alnum) ":" (* nonl))
(regexp "[\n\t]"))))
And advise deft-parse-summary to filter out Org links:
(defun my/deft-parse-summary-around (fun contents title)
(funcall fun (org-link-display-format contents) title))
(with-eval-after-load 'deft
(advice-add #'deft-parse-summary :around #'my/deft-parse-summary-around))
Advise deft-parse-title to be able to extract title from the Org property:
(defun my/deft-parse-title (file contents)
(with-temp-buffer
(insert contents)
(goto-char (point-min))
(if (search-forward-regexp (rx (| "#+title:" "#+TITLE:")) nil t)
(string-trim (buffer-substring-no-properties (point) (line-end-position)))
file)))
(defun my/deft-parse-title-around (fun file contents)
(or (my/deft-parse-title file contents)
(funcall fun file contents)))
(with-eval-after-load 'deft
(advice-add #'deft-parse-title :around #'my/deft-parse-title-around))
Review workflow
UPD . Out of action for now
My take on a review workflow. As a baseline, I want to have a template that lists the important changes since the last review and other basic information. I’m doing reviews regularly, but the time intervals still may vary, hence this flexibility.
This section has seen some updates over time.
Data from git
First, as I have autocommit set up in my org directory, here is a handy function to get an alist of changed files of a form (status . path). In principle, the rev parameter can be a commit, tag, etc but here I’m interested in a form like @{2021-08-30}.
Also in principle, Org Roam DB also stores stuff like creation time and modification time, but I started this section before I started using Org Roam extensively, so git works fine for me.
(setq my/git-diff-status
'(("A" . added)
("C" . copied)
("D" . deleted)
("M" . modified)
("R" . renamed)
("T" . type-changed)
("U" . unmerged)))
(defun my/get-files-status (rev)
(let ((files (shell-command-to-string (concat "git diff --name-status " rev))))
(mapcar
(lambda (file)
(let ((elems (split-string file "\t")))
(cons
(cdr (assoc (car elems) my/git-diff-status))
(nth 1 elems))))
(split-string files "\n" t))))
I’ll use it to get a list of added and changed files in the Org directory since the last review. The date should be in a format YYYY-MM-DD.
(defun my/org-changed-files-since-date (date)
(let ((default-directory org-directory))
(my/get-files-status (format "@{%s}" date))))
Data from org-roam
Now that we have the list of new & changed files, I want to sort into a bunch of categories: projects, log entries, etc. The categories are defined by tags.
So here is a list of plists that sets these categories. The properties are as follows:
:statusis a git status for the file:tagsis a plist that sets up the following conditions for the Roam node:include- should be empty or one of these should be present:exclude- should be empty or none of these should be present
:titleis the name of category as I want it to be seen in the review template
(setq my/org-review-roam-queries
'((:status added
:tags (:include ("org"))
:title "New Project Entries")
(:status changed
:tags (:include ("org"))
:title "Changed Project Entries")
(:status added
:tags (:exclude ("org"))
:title "New Zettelkasten Entries")
(:status changed
:tags (:exclude ("org"))
:title "Changed Zettelkasten Entries")))
This list is used to extract & format the relevant section of the review template.
cl-loop seems pretty good as a control flow structure, but I’ll see if it is also pretty good at producing poorly maintainable code. At least at the moment of this writing, the function below looks rather concise.
(defun my/org-review-format-roam (changes)
(cl-loop for query in my/org-review-roam-queries
with nodes = (org-roam-node-list)
with node-tags = (mapcar #'org-roam-node-tags nodes)
for include-tags = (plist-get (plist-get query :tags) :include)
for exclude-tags = (plist-get (plist-get query :tags) :exclude)
;; List of nodes filtered by :tags in query
for filtered-nodes =
(cl-loop for node in nodes
for tags in node-tags
if (and
(or (seq-empty-p include-tags)
(seq-intersection include-tags tags))
(or (seq-empty-p exclude-tags)
(not (seq-intersection exclude-tags tags))))
collect node)
;; List of changes filtered by :status in query
for filtered-changes =
(cl-loop for change in changes
if (and (eq (car change) (plist-get query :status))
(string-match-p (rx bos "roam") (cdr change)))
collect (cdr change))
;; Intersection of the two filtered lists
for final-nodes =
(cl-loop for node in filtered-nodes
for path = (file-relative-name (org-roam-node-file node)
org-directory)
if (member path filtered-changes)
collect node)
;; If the intersction list is not empty, format it to the result
if final-nodes
concat (format "** %s\n" (plist-get query :title))
;; FInal list of links, sorted by title
and concat (cl-loop for node in (seq-sort
(lambda (node1 node2)
(string-lessp
(org-roam-node-title node1)
(org-roam-node-title node2)))
final-nodes)
concat (format "- [[id:%s][%s]]\n"
(org-roam-node-id node)
(org-roam-node-title node)))))
Data from org-agenda via org-ql
Third second, I want to list some changes in my agenda. This section will change depending on what I’m currently working on.
So, here is a list of queries results of which I want to see in the review template. The format is (name date-field order-by-field query).
(setq my/org-ql-review-queries
`(("Waitlist" scheduled scheduled
(and
(done)
(tags-inherited "waitlist")))
("Personal tasks done" closed ,nil
(and
(tags-inherited "personal")
(todo "DONE")))
("Attended meetings" closed scheduled
(and
(tags-inherited "meeting")
(todo "PASSED")))
("Done project tasks" closed deadline
(and
(todo "DONE")
(ancestors
(heading "Tasks"))))))
The query will be executed like this: (and (date-field :from rev-date) query)
(defun my/org-review-exec-ql (saved rev-date)
(let ((query `(and
(,(nth 1 saved) :from ,rev-date)
,(nth 3 saved))))
(org-ql-query
:select #'element
:from (org-agenda-files)
:where query
:order-by (nth 2 saved))))
Format one element of the query result.
(defun my/org-review-format-element (elem)
(concat
(string-pad
(plist-get (cadr elem) :raw-value)
40)
(when-let (scheduled (plist-get (cadr elem) :scheduled))
(concat " [SCHEDULED: " (plist-get (cadr scheduled) :raw-value) "]"))
(when-let (deadline (plist-get (cadr elem) :deadline))
(concat " [DEADLINE: " (plist-get (cadr deadline) :raw-value) "]"))))
Execute all the saved queries and format an Org list for the capture template.
(defun my/org-review-format-queries (rev-date)
(mapconcat
(lambda (results)
(concat "** " (car results) "\n"
(string-join
(mapcar (lambda (r) (concat "- " r)) (cdr results))
"\n")
"\n"))
(seq-filter
(lambda (result)
(not (seq-empty-p (cdr result))))
(mapcar
(lambda (saved)
(cons
(car saved)
(mapcar
#'my/org-review-format-element
(my/org-review-exec-ql saved rev-date))))
my/org-ql-review-queries))
"\n"))
Capture template
Now, we have to put all this together and define a capture template for the review.
I’ll use a separate directory for the review files, just like for org-journal and org-roam. I’ll store the review files in org-roam. Time will tell if that’s a good idea. The filename will have a format YYYY-MM-DD.org, which will also free me from the effort of storing the last review date somewhere.
If somehow there are no files in the folder, fallback to the current date minus one two week. Also featuring the most awkward date transformation I’ve ever done just to add one date.
(setq my/org-review-directory "review")
(defun my/get-last-review-date ()
(->
(substring
(or
(-max-by
'string-greaterp
(-filter
(lambda (f) (not (or (string-equal f ".") (string-equal f ".."))))
(directory-files (f-join org-roam-directory my/org-review-directory))))
(format-time-string
"%Y-%m-%d"
(time-subtract
(current-time)
(seconds-to-time (* 60 60 24 14)))))
0 10)
(concat "T00:00:00-00:00")
parse-time-string
encode-time
(time-add (seconds-to-time (* 60 60 24)))
((lambda (time)
(format-time-string "%Y-%m-%d" time)))))
A template looks like this:
(setq my/org-review-capture-template
`("r" "Review" plain
,(string-join
'("#+title: %<%Y-%m-%d>: REVIEW"
"#+category: REVIEW"
"#+filetags: log review"
"#+STARTUP: overview"
""
"Last review date: %(org-timestamp-translate (org-timestamp-from-string (format \"<%s>\" (my/get-last-review-date))))"
""
"* Roam"
"%(my/org-review-format-roam (my/org-changed-files-since-date (my/get-last-review-date)))"
"* Agenda"
"%(my/org-review-format-queries (my/get-last-review-date))"
"* Thoughts"
"%?")
"\n")
:if-new (file "review/%<%Y-%m-%d>.org.gpg")))
(defun my/org-roam-capture-review ()
(interactive)
(org-roam-capture- :node (org-roam-node-create)
:templates `(,my/org-review-capture-template)))
Contacts
org-contacts is a package to store contacts in an org file.
It seems the package has been somewhat revived in the recent months. It used things like lexical-let when I first found it.
(use-package org-contacts
:straight (:type git :repo "https://repo.or.cz/org-contacts.git")
:if (not my/remote-server)
:after (org)
:config
(setq org-contacts-files (list
(concat org-directory "/contacts.org"))))
An example contact entry can look like this:
* Pavel Korytov
:PROPERTIES:
:TYPE: person
:EMAIL: thexcloud@gmail.com
:EMAIL+: pvkorytov@etu.ru
:BIRTHDAY: [1998-08-14]
:END:
Calendar view
calfw is a nice package that displays calendars in Emacs.
(defun my/calfw-setup-buffer ()
(display-line-numbers-mode -1))
(use-package calfw
:straight t
:config
(add-hook 'cfw:calendar-mode-hook #'my/calfw-setup-buffer))
(use-package calfw-org
:after (calfw org)
:straight t)
UI
LaTeX fragments
A function to enable LaTeX native highlighting. Not setting this as default, because it loads LaTeX stuff.
(defun my/enable-org-latex ()
(interactive)
(customize-set-variable 'org-highlight-latex-and-related '(native))
(add-hook 'org-mode-hook (lambda () (yas-activate-extra-mode 'LaTeX-mode)))
(sp-local-pair 'org-mode "$" "$")
(sp--remove-local-pair "'"))
Call the function before opening an org file or reopen a buffer after calling the function.
Scale latex fragments preview.
(with-eval-after-load-norem 'org
(setq my/org-latex-scale 1.75)
(setq org-format-latex-options (plist-put org-format-latex-options :scale my/org-latex-scale)))
Also, LaTeX fragments preview tends to break whenever the are custom #+LATEX_HEADER entries. To circumvent this, I add a custom header and modify the org-preview-latex-process-alist variable
(with-eval-after-load-norem 'org
(setq my/latex-preview-header "\\documentclass{article}
\\usepackage[usenames]{color}
\\usepackage{graphicx}
\\usepackage{grffile}
\\usepackage{longtable}
\\usepackage{wrapfig}
\\usepackage{rotating}
\\usepackage[normalem]{ulem}
\\usepackage{amsmath}
\\usepackage{textcomp}
\\usepackage{amssymb}
\\usepackage{capt-of}
\\usepackage{hyperref}
\\pagestyle{empty}")
(setq org-preview-latex-process-alist
(mapcar
(lambda (item)
(cons
(car item)
(plist-put (cdr item) :latex-header my/latex-preview-header)))
org-preview-latex-process-alist)))
Better headers
org-superstar-mode is a package that makes Org heading lines look a bit prettier.
Disabled it for now because of overlapping functionality with org-bars.
(use-package org-superstar
:straight t
:disabled
:hook (org-mode . org-superstar-mode))
org-bars highlights Org indentation with bars.
(use-package org-bars
:straight (:repo "tonyaldon/org-bars" :host github)
:if (display-graphic-p)
:hook (org-mode . org-bars-mode))
Remove the ellipsis at the end of folded headlines, as it seems unnecessary with org-bars.
(defun my/org-no-ellipsis-in-headlines ()
(remove-from-invisibility-spec '(outline . t))
(add-to-invisibility-spec 'outline))
(with-eval-after-load 'org-bars
(add-hook 'org-mode-hook #'my/org-no-ellipsis-in-headlines)
(when (eq major-mode 'org-mode)
(my/org-no-ellipsis-in-headlines)))
Override colors
(my/use-colors
(org-block :background (my/color-value 'bg-other))
(org-block-begin-line :background (my/color-value 'bg-other)
:foreground (my/color-value 'grey)))
Export
Hugo
A package for exporting Org to Hugo. That’s how I manage my sqrtminusone.xyz.
References:
(use-package ox-hugo
:straight t
:if (not my/remote-server)
:after ox)
Jupyter Notebook
(use-package ox-ipynb
:straight (:host github :repo "jkitchin/ox-ipynb")
:if (not my/remote-server)
:after ox)
Html export
(use-package htmlize
:straight t
:after ox
:if (not my/remote-server)
:config
(setq org-html-htmlize-output-type 'css))
org-ref
(with-eval-after-load 'org-ref
(setq org-ref-csl-default-locale "ru-RU")
(setq org-ref-csl-default-style (expand-file-name
(concat user-emacs-directory
"gost-r-7-0-5-2008-numeric.csl"))))
LaTeX
Add a custom LaTeX template without default packages. Packages are indented to be imported with function from Import *.sty.
(defun my/setup-org-latex ()
(setq org-latex-prefer-user-labels t)
(setq org-latex-compiler "xelatex") ;; Probably not necessary
(setq org-latex-pdf-process '("latexmk -outdir=%o %f")) ;; Use latexmk
(setq org-latex-listings 'minted) ;; Use minted to highlight source code
(setq org-latex-minted-options ;; Some minted options I like
'(("breaklines" "true")
("tabsize" "4")
("autogobble")
("linenos")
("numbersep" "0.5cm")
("xleftmargin" "1cm")
("frame" "single")))
;; Use extarticle without the default packages
(add-to-list 'org-latex-classes
'("org-plain-extarticle"
"\\documentclass{extarticle}
[NO-DEFAULT-PACKAGES]
[PACKAGES]
[EXTRA]"
("\\section{%s}" . "\\section*{%s}")
("\\subsection{%s}" . "\\subsection*{%s}")
("\\subsubsection{%s}" . "\\subsubsection*{%s}")
("\\paragraph{%s}" . "\\paragraph*{%s}")
("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
(add-to-list 'org-latex-classes
'("org-plain-extreport"
"\\documentclass{extreport}
[NO-DEFAULT-PACKAGES]
[PACKAGES]
[EXTRA]"
("\\chapter{%s}" . "\\chapter*{%s}")
("\\section{%s}" . "\\section*{%s}")
("\\subsection{%s}" . "\\subsection*{%s}")
("\\subsubsection{%s}" . "\\subsubsection*{%s}")
("\\paragraph{%s}" . "\\paragraph*{%s}")))
;; Use beamer without the default packages
(add-to-list 'org-latex-classes
'("org-latex-beamer"
"\\documentclass{beamer}
[NO-DEFAULT-PACKAGES]
[PACKAGES]
[EXTRA]"
("beamer" "\\documentclass[presentation]{beamer}"
("\\section{%s}" . "\\section*{%s}")
("\\subsection{%s}" . "\\subsection*{%s}")
("\\subsubsection{%s}" . "\\subsubsection*{%s}")))))
;; Make sure to eval the function when org-latex-classes list already exists
(with-eval-after-load-norem 'ox-latex
(my/setup-org-latex))
Fix Russian dictionary
No idea why, but somehow the exported uses english words if there isn’t :default key in the dictionary.
(with-eval-after-load 'ox
(setq org-export-dictionary
(cl-loop for item in org-export-dictionary collect
(cons
(car item)
(cl-loop for entry in (cdr item)
if (and (equal (car entry) "ru")
(plist-get (cdr entry) :utf-8))
collect (list "ru" :default (plist-get (cdr entry) :utf-8))
else collect entry)))))
Keybindings & stuff
General keybindings
(with-eval-after-load-norem 'org
(general-define-key
:keymaps 'org-mode-map
"C-c d" 'org-decrypt-entry
"C-c e" 'org-encrypt-entry
"M-p" 'org-latex-preview
"M-o" 'org-redisplay-inline-images)
(general-define-key
:keymaps 'org-mode-map
:states '(normal emacs)
"L" 'org-shiftright
"H" 'org-shiftleft
"S-<next>" 'org-next-visible-heading
"S-<prior>" 'org-previous-visible-heading
"M-0" 'org-next-visible-heading
"M-9" 'org-previous-visible-heading
"M-]" 'org-babel-next-src-block
"M-[" 'org-babel-previous-src-block)
(general-define-key
:keymaps 'org-agenda-mode-map
"M-]" 'org-agenda-later
"M-[" 'org-agenda-earlier)
(general-nmap :keymaps 'org-mode-map "RET" 'org-ctrl-c-ctrl-c))
Copy a link
(defun my/org-link-copy (&optional arg)
"Extract URL from org-mode link and add it to kill ring."
(interactive "P")
(let* ((link (org-element-lineage (org-element-context) '(link) t))
(type (org-element-property :type link))
(url (org-element-property :path link))
(url (concat type ":" url)))
(kill-new url)
(message (concat "Copied URL: " url))))
(with-eval-after-load-norem 'org
(general-nmap :keymaps 'org-mode-map
"C-x C-l" 'my/org-link-copy))
Navigating source blocks
An idea born from discussing Org Mode navigation with @Infu.
Modifying org-babel-next-src-block and org-babel-previous-src-block to ignore hidden source blocks.
(defun my/org-babel-next-visible-src-block (arg)
"Move to the next visible source block.
With ARG, repeats or can move backward if negative."
(interactive "p")
(let ((regexp org-babel-src-block-regexp))
(if (< arg 0)
(beginning-of-line)
(end-of-line))
(while (and (< arg 0) (re-search-backward regexp nil :move))
(unless (bobp)
(while (pcase (get-char-property-and-overlay (point) 'invisible)
(`(outline . ,o)
(goto-char (overlay-start o))
(re-search-backward regexp nil :move))
(_ nil))))
(cl-incf arg))
(while (and (> arg 0) (re-search-forward regexp nil t))
(while (pcase (get-char-property-and-overlay (point) 'invisible)
(`(outline . ,o)
(goto-char (overlay-end o))
(re-search-forward regexp nil :move))
(_ (end-of-line) nil)))
(re-search-backward regexp nil :move)
(cl-decf arg))
(if (> arg 0) (goto-char (point-max)) (beginning-of-line))))
(defun my/org-babel-previous-visible-src-block (arg)
"Move to the prevous visible source block.
With ARG, repeats or can move backward if negative."
(interactive "p")
(my/org-babel-next-visible-src-block (- arg)))
(with-eval-after-load 'org
(general-define-key
:keymaps 'org-mode-map
:states '(normal emacs)
"M-]" #'my/org-babel-next-visible-src-block
"M-[" #'my/org-babel-previous-visible-src-block))
Open a file from org-directory
A function to open a file from org-directory, excluding a few directories like roam and journal.
(defun my/org-file-open ()
(interactive)
(let* ((files
(thread-last
'("projects" "misc")
(mapcar (lambda (f)
(directory-files (concat org-directory "/" f) t (rx ".org" eos))))
(apply #'append)
(mapcar (lambda (file)
(string-replace (concat org-directory "/") "" file)))
(append
'("inbox.org" "contacts.org")))))
(find-file
(concat org-directory "/"
(completing-read "Org file: " files)))))
(my-leader-def
"o o" 'my/org-file-open)
System configuration
Functions related to literate configuration.
Tables for Guix Dependencies
This section deals with using using profiles in GNU Guix.
A “profile” in Guix is a way to group package installations. For instance, I have a “music” profile that has software like MPD, ncmpcpp that I’m still occasionally using because of its tag editor, etc. Corresponding to that profile, there’s a manifest named music.scm that looks like this:
(specifications->manifest
'(
"flac"
"cuetools"
"shntool"
"mpd-mpc"
"mpd-watcher"
"picard"
"ncmpcpp"
"mpd"))
I could generate this file with org-babel as any other, but that is often not so convenient. For example, I have a polybar module that uses sunwait to show sunset and sunrise times, and ideally, I want to declare sunwait to be in the “desktop-polybar” profile in the same section that has the polybar module definition and the bash script.
So here’s an approach I came up with. The relevant section of the config looks like this:
*** sun
| Category | Guix dependency |
|-----------------+-----------------|
| desktop-polybar | sunwait |
Prints out the time of sunrise/sunset. Uses [[https://github.com/risacher/sunwait][sunwait]]
#+begin_src bash :tangle ./bin/polybar/sun.sh :noweb no-export
...script...
#+end_src
#+begin_src ini :noweb no-export
...polybar module definition...
#+end_src
So sunwait is declared in an Org table with Guix dependency in the header. Such tables are spread through my configuration files.
Thus I made a function that extracts packages from all such tables from the current Org buffer. The rules are as follows:
- If a column name matches
[G|g]uix.*dep, its contents are added to the result. - If
CATEGORYis passed, a column with name[C|c]ategoryis used to filter results. That way, one Org file can be used to produce multiple manifests. - If
CATEGORYis not passed, entries with the non-empty category are filtered out - If there is a
[D|d]isabledcolumn, entries that have a non-empty value in this column are filtered out.
And here is the implementation:
(defun my/extract-guix-dependencies (&optional category)
(let ((dependencies '()))
(org-table-map-tables
(lambda ()
(let* ((table
(seq-filter
(lambda (q) (not (eq q 'hline)))
(org-table-to-lisp)))
(dep-name-index
(cl-position
nil
(mapcar #'substring-no-properties (nth 0 table))
:test (lambda (_ elem)
(string-match-p "[G|g]uix.*dep" elem))))
(category-name-index
(cl-position
nil
(mapcar #'substring-no-properties (nth 0 table))
:test (lambda (_ elem)
(string-match-p ".*[C|c]ategory.*" elem))))
(disabled-name-index
(cl-position
nil
(mapcar #'substring-no-properties (nth 0 table))
:test (lambda (_ elem)
(string-match-p ".*[D|d]isabled.*" elem)))))
(when dep-name-index
(dolist (elem (cdr table))
(when
(and
;; Category
(or
;; Category not set and not present in the table
(and
(or (not category) (string-empty-p category))
(not category-name-index))
;; Category is set and present in the table
(and
category-name-index
(not (string-empty-p category))
(string-match-p category (nth category-name-index elem))))
;; Not disabled
(or
(not disabled-name-index)
(string-empty-p (nth disabled-name-index elem))))
(add-to-list
'dependencies
(substring-no-properties (nth dep-name-index elem)))))))))
dependencies))
To make it work in the configuration, it is necessary to format the list so that Scheme could read it:
(defun my/format-guix-dependencies (&optional category)
(mapconcat
(lambda (e) (concat "\"" e "\""))
(my/extract-guix-dependencies category)
"\n"))
And we need an Org snippet such as this:
#+NAME: packages
#+begin_src emacs-lisp :tangle no :var category=""
(my/format-guix-dependencies category)
#+end_src
Now, creating a manifest, for example, for the desktop-polybar profile is as simple as:
#+begin_src scheme :tangle ~/.config/guix/manifests/desktop-polybar.scm :noweb no-export
(specifications->manifest
'(
<<packages("desktop-polybar")>>))
#+end_src
There’s a newline symbol between “(” and <<packages("desktop-polybar")>> because whenever a noweb expression expands into multiple lines, for each new line noweb duplicates contents between the start of the line and the start of the expression.
One reason this is so is to support languages where indentation is a part of the syntax, for instance, Python:
class TestClass:
<<class-contents>>
So every line of <<class-contents>> will be indented appropriately. In our case though, it is a minor inconvenience to be aware of.
Noweb evaluations
One note is that by default running these commands will require the user to confirm evaluation of each code block. To avoid that, I set org-confirm-babel-evaluate to nil:
(setq my/org-config-files
'("/home/pavel/Emacs.org"
"/home/pavel/Desktop.org"
"/home/pavel/Console.org"
"/home/pavel/Guix.org"
"/home/pavel/Mail.org"))
(add-hook 'org-mode-hook
(lambda ()
(when (member (buffer-file-name) my/org-config-files)
(setq-local org-confirm-babel-evaluate nil))))
yadm hook
A script to run tangle from CLI.
(require 'org)
(org-babel-do-load-languages
'org-babel-load-languages
'((emacs-lisp . t)
(shell . t)))
;; Do not ask to confirm evaluations
(setq org-confirm-babel-evaluate nil)
<<guix-tables>>
;; A few dummy modes to avoid being prompted for comment systax
(define-derived-mode fish-mode prog-mode "Fish"
(setq-local comment-start "# ")
(setq-local comment-start-skip "#+[\t ]*"))
(define-derived-mode yaml-mode text-mode "YAML"
(setq-local comment-start "# ")
(setq-local comment-start-skip "#+ *"))
(mapcar #'org-babel-tangle-file
'("/home/pavel/Emacs.org"
"/home/pavel/Desktop.org"
"/home/pavel/Console.org"
"/home/pavel/Guix.org"
"/home/pavel/Mail.org"))
To launch from CLI, run:
emacs -Q --batch -l run-tangle.el
I have added this line to yadm’s post_alt hook, so to run tangle after yadm alt
Regenerate desktop config
Somewhat similar to the previous one… Occasinally I want to re-tangle all desktop configuration files, for instance to apply a new theme.
(defun my/regenerate-desktop ()
(interactive)
(org-babel-tangle-file "/home/pavel/Desktop.org")
(org-babel-tangle-file "/home/pavel/Console.org")
(call-process "xrdb" nil nil nil "-load" "/home/pavel/.Xresources")
(call-process "~/bin/polybar.sh")
(call-process "pkill" nil nil nil "dunst")
(call-process "herd" nil nil nil "restart" "xsettingsd")
(when (fboundp #'my/exwm-set-alpha)
(if (my/light-p)
(my/exwm-set-alpha 100)
(my/exwm-set-alpha 90))))
Folders
(let ((folders-file (expand-file-name "folders.el" user-emacs-directory)))
(when (file-exists-p folders-file)
(load-file folders-file)))
Applications
Dired
Dired is the built-in Emacs file manager. It’s so good that it’s strange that, to my knowledge, no one tried to replicate it outside of Emacs.
I currently use it as my primary file manager.
Basic config & keybindings
My config mostly follows ranger’s and vifm’s keybindings which I’m used to.
(use-package dired
:ensure nil
:custom ((dired-listing-switches "-alh --group-directories-first"))
:commands (dired)
:config
(setq dired-dwim-target t)
(setq wdired-allow-to-change-permissions t)
(setq wdired-create-parent-directories t)
(setq dired-recursive-copies 'always)
(setq dired-recursive-deletes 'always)
(setq dired-kill-when-opening-new-dired-buffer t)
(add-hook 'dired-mode-hook
(lambda ()
(setq truncate-lines t)
(visual-line-mode nil)))
(when my/is-termux
(add-hook 'dired-mode-hook #'dired-hide-details-mode))
(general-define-key
:states '(normal)
:keymaps 'dired-mode-map
"h" #'dired-up-directory
"l" #'dired-find-file
"=" #'dired-narrow
"-" #'my/dired-create-empty-file-subtree
"~" #'vterm
"M-r" #'wdired-change-to-wdired-mode
"<left>" #'dired-up-directory
"<right>" #'dired-find-file
"M-<return>" #'dired-open-xdg))
(defun my/dired-home ()
"Open dired at $HOME"
(interactive)
(dired (expand-file-name "~")))
(my-leader-def
"ad" #'dired)
Addons
I used to use dired+, which provides a lot of extensions for dired functionality, but it also creates some new problems, so I opt out of it. Fortunately, the one feature I want from this package - adding more colors to dired buffers - is available as a separate package.
(use-package diredfl
:straight t
:after (dired)
:config
(diredfl-global-mode 1))
dired-subtree is a package that enables managing Dired buffers in a tree-like manner. By default evil-collection maps dired-subtree-toggle to TAB.
(use-package dired-subtree
:after (dired)
:straight t)
(defun my/dired-create-empty-file-subtree ()
(interactive)
(let ((default-directory (dired-current-directory)))
(dired-create-empty-file
(read-file-name "Create empty file: "))))
dired-sidebar enables opening Dired in sidebar. For me, with dired-subtree this makes dired a better option than Treemacs.
(defun my/dired-sidebar-toggle ()
(interactive)
(if (not current-prefix-arg)
(dired-sidebar-toggle-sidebar)
(let ((dired-sidebar-follow-file-at-point-on-toggle-open
current-prefix-arg)
(current-prefix-arg nil))
(dired-sidebar-toggle-sidebar))))
(use-package dired-sidebar
:straight t
:after (dired)
:commands (dired-sidebar-toggle-sidebar)
:init
(setq dired-sidebar-follow-file-at-point-on-toggle-open nil)
(general-define-key
:keymaps '(normal override global)
"C-n" `(my/dired-sidebar-toggle
:wk "dired-sidebar"))
:config
(setq dired-sidebar-width 45)
(defun my/dired-sidebar-setup ()
(toggle-truncate-lines 1)
(display-line-numbers-mode -1)
(setq-local dired-subtree-use-backgrounds nil)
(setq-local window-size-fixed nil))
(general-define-key
:keymaps 'dired-sidebar-mode-map
:states '(normal emacs)
"l" #'dired-sidebar-find-file
"h" #'dired-sidebar-up-directory
"=" #'dired-narrow)
(add-hook 'dired-sidebar-mode-hook #'my/dired-sidebar-setup)
(advice-add #'dired-create-empty-file :after 'dired-sidebar-refresh-buffer))
dired-recent.el adds history to dired.
(use-package dired-recent
:straight t
:after dired
:commands (dired-recent-open)
:config
(dired-recent-mode)
(general-define-key
:keymaps 'dired-recent-mode-map
"C-x C-d" nil)
(my-leader-def
"aD" '(dired-recent-open :wk "dired history")))
Display icons for files.
| Note | Type |
|---|---|
| ACHTUNG | This plugin is slow as hell with TRAMP or in gnu/store |
(use-package all-the-icons-dired
:straight t
:if (not (or my/slow-ssh (not (display-graphic-p))))
:hook (dired-mode . (lambda ()
(unless (string-match-p "/gnu/store" default-directory)
(all-the-icons-dired-mode))))
:config)
Provides stuff like dired-open-xdg
(use-package dired-open
:straight t
:commands (dired-open-xdg))
dired-du is a package that shows directory sizes
(use-package dired-du
:straight t
:commands (dired-du-mode)
:config
(setq dired-du-size-format t))
vifm-like filter
(use-package dired-narrow
:straight t
:commands (dired-narrow)
:config
(general-define-key
:keymaps 'dired-narrow-map
[escape] 'keyboard-quit))
Display git info, such as the last commit for file and stuff. It’s pretty useful but also slows down Dired a bit, hence I don’t turn it out by default.
(use-package dired-git-info
:straight t
:after dired
:if (not my/slow-ssh)
:config
(general-define-key
:keymap 'dired-mode-map
:states '(normal emacs)
")" 'dired-git-info-mode))
avy-dired is my experimentation with Avy & Dired. It’s somewhat unstable.
(use-package avy-dired
:straight (:host github :repo "SqrtMinusOne/avy-dired")
:after (dired)
:init
(my-leader-def "aa" #'avy-dired-goto-line))
Subdirectories
Subdirectories are one of the interesting features of Dired. It allows displaying multiple folders on the same window.
I add my own keybindings and some extra functionality.
(defun my/dired-open-this-subdir ()
(interactive)
(dired (dired-current-directory)))
(defun my/dired-kill-all-subdirs ()
(interactive)
(let ((dir dired-directory))
(kill-buffer (current-buffer))
(dired dir)))
(with-eval-after-load 'dired
(general-define-key
:states '(normal)
:keymaps 'dired-mode-map
"s" nil
"ss" 'dired-maybe-insert-subdir
"sl" 'dired-maybe-insert-subdir
"sq" 'dired-kill-subdir
"sk" 'dired-prev-subdir
"sj" 'dired-next-subdir
"sS" 'my/dired-open-this-subdir
"sQ" 'my/dired-kill-all-subdirs
(kbd "TAB") 'dired-hide-subdir))
TRAMP
TRAMP is a package that provides remote editing capacities. It is particularly useful for remote server management.
Unfortunately, many Emacs packages don’t exactly moderate their rate of filesystem operations, and on TRAMP over network each operation adds additional overhead, so… it can get pretty slow. To debug these issues, set the following variable to 6:
(setq tramp-verbose 6)
I used to launch a separate Emacs instance for TRAMP, which had some of these packages disabled via environment variables, my advice-fu got better since then.
So, to determine if the buffer is in TRAMP:
(defun my/tramp-p (&optional buffer)
(file-remote-p
(buffer-local-value 'default-directory (or buffer (current-buffer)))))
And advice to disable a function for TRAMP-related buffers:
(defun my/tramp-void-if-tramp (fun &rest args)
(unless (my/tramp-p)
(apply fun args)))
(defun my/tramp-void-if-file-is-tramp (fun &optional dir)
(unless (file-remote-p (or dir default-directory))
(funcall fun dir)))
editorconfig lovely package looks for the .editorconfig file in the file tree.
(with-eval-after-load 'editorconfig
(advice-add #'editorconfig-apply :around #'my/tramp-void-if-tramp)
(advice-add #'editorconfig--disabled-for-filename
:around #'my/tramp-void-if-file-is-tramp))
all-the-icons-dired runs test on every file in the directory.
(with-eval-after-load 'all-the-icons-dired
(advice-add #'all-the-icons-dired-mode :around #'my/tramp-void-if-tramp))
projectile looks for .git, .svn, etc. to find the project root. Maybe I’ll make a more economic implementation if I need one.
(with-eval-after-load 'projectile
(advice-add #'projectile-project-root :around #'my/tramp-void-if-file-is-tramp))
lsp does a whole lot of stuff. It probably can be used with TRAMP on faster connections, but not in my case.
(with-eval-after-load 'lsp
(advice-add #'lsp :around #'my/tramp-void-if-tramp)
(advice-add #'lsp-deferred :around #'my/tramp-void-if-tramp))
git-gutter runs git a lot of times.
(with-eval-after-load 'git-gutter
(advice-add #'git-gutter--turn-on :around #'my/tramp-void-if-tramp))
At any rate, it’s usable, although not perfect. Some other optimization settings:
(setq remote-file-name-inhibit-cache nil)
(setq vc-ignore-dir-regexp
(format "\\(%s\\)\\|\\(%s\\)"
vc-ignore-dir-regexp
tramp-file-name-regexp))
Set the default shell to bin/bash for TRAMP or on a remote server.
(when (or my/remote-server my/slow-ssh)
(setq explicit-shell-file-name "/bin/bash"))
Also, here is a hack to make TRAMP find ls on Guix:
(with-eval-after-load 'tramp
(setq tramp-remote-path
(append tramp-remote-path
'(tramp-own-remote-path))))
Bookmarks
A simple bookmark list for Dired, mainly to use with TRAMP. I may look into a proper bookmarking system later.
Bookmarks are listed in the private.el file, which has an expression like this:
(setq my/dired-bookmarks
'(("sudo" . "/sudo::/")))
The file itself is encrypted with yadm.
(defun my/dired-bookmark-open ()
(interactive)
(let ((bookmarks
(mapcar
(lambda (el) (cons (format "%-30s %s" (car el) (cdr el)) (cdr el)))
my/dired-bookmarks)))
(dired
(cdr
(assoc
(completing-read "Dired: " bookmarks nil nil "^")
bookmarks)))))
Integrations
A few functions to send files from Dired to various places.
First, a function to get the target buffer.
(defun my/get-good-buffer (buffer-major-mode prompt)
(or
(cl-loop
for buf being the buffers
if (eq (buffer-local-value 'major-mode buf) buffer-major-mode)
collect buf into all-buffers
if (and (eq (buffer-local-value 'major-mode buf) buffer-major-mode)
(get-buffer-window buf t))
collect buf into visible-buffers
finally return (if (= (length visible-buffers) 1)
(car visible-buffers)
(if (= (length all-buffers) 1)
(car all-buffers)
(when-let ((buffers-by-name (mapcar (lambda (b)
(cons (buffer-name b) b))
all-buffers)))
(cdr
(assoc
(completing-read prompt buffers-by-name nil t)
buffers-by-name))))))
(user-error "No buffer found!")))
Attach file to telega.
(defun my/dired-attach-to-telega (files telega-buffer)
(interactive
(list (dired-get-marked-files nil nil #'dired-nondirectory-p)
(my/get-good-buffer 'telega-chat-mode "Telega buffer: ")))
(unless files
(user-error "No (non-directory) files selected"))
(with-current-buffer telega-buffer
(dolist (file files)
(telega-chatbuf-attach-file file))))
Attach files to notmuch.
(defun my/dired-attach-to-notmuch (files notmuch-buffer)
(interactive
(list (dired-get-marked-files nil nil #'dired-nondirectory-p)
(my/get-good-buffer 'notmuch-message-mode "Notmuch message buffer: ")))
(unless files
(user-error "No (non-directory) files selected"))
(with-current-buffer notmuch-buffer
(goto-char (point-max))
(dolist (file files)
(let ((type
(or (mm-default-file-type file)
"application/octet-stream")))
(mml-attach-file
file
type
(mml-minibuffer-read-description)
(mml-minibuffer-read-disposition type nil file))))))
Attach files to ement.
(defun my/dired-attach-to-ement (files ement-buffer)
(interactive
(list (dired-get-marked-files nil nil #'dired-nondirectory-p)
(my/get-good-buffer 'ement-room-mode "Ement room buffer: ")))
(unless files
(user-error "No (non-directory) files selected"))
(with-current-buffer ement-buffer
(ement-with-room-and-session
(dolist (file files)
(ement-room-send-file
file
(read-from-minibuffer (format "Message body for %s: " file))
ement-room
ement-session)))))
Attach files to mastodon.
(defun my/dired-attach-to-mastodon (files mastodon-buffer)
(interactive
(list (dired-get-marked-files nil nil #'dired-nondirectory-p)
(or (cl-loop for buf being the buffers
if (eq (buffer-local-value 'mastodon-toot-mode buf) t)
return buf)
(user-error "No buffer found!"))))
(unless files
(user-error "No (non-directory) files selected"))
(with-current-buffer mastodon-buffer
(dolist (file files)
(mastodon-toot--attach-media
file
(read-from-minibuffer (format "Description for %s: " file))))))
And the keybindings:
(with-eval-after-load 'dired
(general-define-key
:states '(normal)
:keymaps 'dired-mode-map
"a" nil
"at" #'my/dired-attach-to-telega
"am" #'my/dired-attach-to-notmuch
"ai" #'my/dired-attach-to-ement
"an" #'my/dired-attach-to-mastodon))
Shells / Terminals
vterm
My terminal emulator of choice.
References:
Configuration
On Guix it makes more sense to use the Guix package to avoid building the vterm module, but obviously not an option on termux, hence this:
(when my/is-termux
(straight-use-package 'vterm))
The actual config:
(use-package vterm
:commands (vterm vterm-other-window)
:config
(setq vterm-kill-buffer-on-exit t)
(add-hook 'vterm-mode-hook
(lambda ()
(setq-local global-display-line-numbers-mode nil)
(display-line-numbers-mode 0)))
(advice-add 'evil-collection-vterm-insert
:before (lambda (&rest args)
(ignore-errors
(apply #'vterm-reset-cursor-point args))))
(general-define-key
:keymaps 'vterm-mode-map
"M-q" 'vterm-send-escape
"C-h" 'evil-window-left
"C-l" 'evil-window-right
"C-k" 'evil-window-up
"C-j" 'evil-window-down
"C-<right>" 'evil-window-right
"C-<left>" 'evil-window-left
"C-<up>" 'evil-window-up
"C-<down>" 'evil-window-down
"M-<left>" 'vterm-send-left
"M-<right>" 'vterm-send-right
"M-<up>" 'vterm-send-up
"M-<down>" 'vterm-send-down)
(general-define-key
:keymaps 'vterm-mode-map
:states '(normal insert)
"<home>" 'vterm-beginning-of-line
"<end>" 'vterm-end-of-line)
(general-define-key
:keymaps 'vterm-mode-map
:states '(insert)
"C-r" 'vterm-send-C-r
"C-k" 'vterm-send-C-k
"C-j" 'vterm-send-C-j
"M-l" 'vterm-send-right
"M-h" 'vterm-send-left
"M-k" 'vterm-send-up
"M-j" 'vterm-send-down))
Subterminal
Open a terminal in the lower third of the frame with the ` key.
I guess that’s the first Emacs function I wrote!
(add-to-list 'display-buffer-alist
`(,"vterm-subterminal.*"
(display-buffer-reuse-window
display-buffer-in-side-window)
(side . bottom)
(reusable-frames . visible)
(window-height . 0.33)))
(defun my/toggle-vterm-subteminal ()
"Toogle subteminal."
(interactive)
(let ((vterm-window
(seq-find
(lambda (window)
(string-match
"vterm-subterminal.*"
(buffer-name (window-buffer window))))
(window-list))))
(if vterm-window
(if (eq (get-buffer-window (current-buffer)) vterm-window)
(kill-buffer (current-buffer))
(select-window vterm-window))
(vterm-other-window "vterm-subterminal"))))
(unless my/slow-ssh
(general-nmap "`" 'my/toggle-vterm-subteminal)
(general-nmap "~" 'vterm))
Dired integration
A function to get pwd for vterm. Couldn’t find a built-in function for some reason, but this seems work fine:
(defun my/vterm-get-pwd ()
(if vterm--process
(file-truename (format "/proc/%d/cwd" (process-id vterm--process)))
default-directory))
Now we can open dired for vterm pwd:
(defun my/vterm-dired-other-window ()
"Open dired in vterm pwd in other window"
(interactive)
(dired-other-window (my/vterm-get-pwd)))
(defun my/vterm-dired-replace ()
"Replace vterm with dired"
(interactive)
(let ((pwd (my/vterm-get-pwd)))
(kill-process vterm--process)
(dired pwd)))
The second function is particularly handy because that way I can alternate between vterm and dired.
Keybindings:
(with-eval-after-load 'vterm
(general-define-key
:keymaps 'vterm-mode-map
:states '(normal)
"gd" #'my/vterm-dired-other-window
"gD" #'my/vterm-dired-replace))
With-editor integration
A package used by Magit to use the current Emacs instance as the $EDITOR.
That is, with the help of this function, I can just write e <filename>, edit the file, and then return to the same vterm buffer. No more running vim inside Emacs.
(use-package with-editor
:straight t
:after (vterm)
:config
(add-hook 'vterm-mode-hook 'with-editor-export-editor))
eshell
A shell written in Emacs lisp. I don’t use it as of now, but keep the config just in case.
(defun my/configure-eshell ()
(add-hook 'eshell-pre-command-hook 'eshell-save-some-history)
(add-to-list 'eshell-output-filter-functions 'eshell-truncate-buffer)
(setq eshell-history-size 10000)
(setq eshell-hist-ingnoredups t)
(setq eshell-buffer-maximum-lines 10000)
(evil-define-key '(normal insert visual) eshell-mode-map (kbd "<home>") 'eshell-bol)
(evil-define-key '(normal insert visual) eshell-mode-map (kbd "C-r") 'counsel-esh-history)
(general-define-key
:states '(normal)
:keymaps 'eshell-mode-map
(kbd "C-h") 'evil-window-left
(kbd "C-l") 'evil-window-right
(kbd "C-k") 'evil-window-up
(kbd "C-j") 'evil-window-down))
(use-package eshell
:ensure nil
:after evil-collection
:commands (eshell)
:init
(my/use-colors
(epe-pipeline-delimiter-face :foreground (my/color-value 'green))
(epe-pipeline-host-face :foreground (my/color-value 'blue))
(epe-pipeline-time-face :foreground (my/color-value 'yellow))
(epe-pipeline-user-face :foreground (my/color-value 'red)))
:config
(add-hook 'eshell-first-time-mode-hook 'my/configure-eshell 90)
(when my/slow-ssh
(add-hook 'eshell-mode-hook
(lambda ()
(setq-local company-idle-delay 1000))))
(setq eshell-banner-message ""))
(use-package aweshell
:straight (:repo "manateelazycat/aweshell" :host github)
:after eshell
:init
(my/use-colors
(aweshell-alert-buffer-face :background (color-darken-name (my/color-value 'bg) 3))
(aweshell-alert-command-face :foreground (my/color-value 'red) :weight 'bold))
:config
(setq eshell-prompt-regexp "^[^#\nλ]* λ[#]* ")
(setq eshell-highlight-prompt t)
(setq eshell-prompt-function 'epe-theme-pipeline))
(use-package eshell-info-banner
:defer t
:if (not my/slow-ssh)
:straight (eshell-info-banner :type git
:host github
:repo "phundrak/eshell-info-banner.el")
:hook (eshell-banner-load . eshell-info-banner-update-banner)
:config
(setq eshell-info-banner-filter-duplicate-partitions t)
(setq eshell-info-banner-exclude-partitions '("b/efi")))
(when (or my/slow-ssh my/remote-server)
(general-nmap "`" 'aweshell-dedicated-toggle)
(general-nmap "~" 'eshell))
shell
Interactive subshell (M-x shell) is a way to run commands with input and output through an Emacs buffer.
(defun my/setup-shell ()
(setq-local comint-use-prompt-regexp t)
(setq-local comint-prompt-read-only t))
(add-hook 'shell-mode-hook #'my/setup-shell)
Managing dotfiles
A bunch of functions for managing dotfiles with yadm.
Open Emacs config
(general-define-key
;; "C-c c" (my/command-in-persp "Emacs.org" "conf" 1 (find-file "~/Emacs.org"))
"C-c c" `(,(lambda () (interactive) (find-file "~/Emacs.org")) :wk "Emacs.org"))
(my-leader-def
:infix "c"
"" '(:which-key "configuration")
;; "c" (my/command-in-persp "Emacs.org" "conf" 1 (find-file "~/Emacs.org"))
"c" `(,(lambda () (interactive) (find-file "~/Emacs.org")) :wk "Emacs.org"))
Open Magit for yadm
Idea:
(with-eval-after-load 'tramp
(add-to-list 'tramp-methods
`("yadm"
(tramp-login-program "yadm")
(tramp-login-args (("enter")))
(tramp-login-env (("SHELL") "/bin/sh"))
(tramp-remote-shell "/bin/sh")
(tramp-remote-shell-args ("-c")))))
(defun my/yadm-magit ()
(interactive)
(magit-status "/yadm::"))
(my-leader-def "cm" 'my/yadm-magit)
Open a dotfile
Open a file managed by yadm.
(defun my/open-yadm-file ()
"Open a file managed by yadm"
(interactive)
(find-file
(concat
(file-name-as-directory (getenv "HOME"))
(completing-read
"yadm files: "
(split-string
(shell-command-to-string "yadm ls-files $HOME --full-name") "\n")))))
(general-define-key
"C-c f" '(my/open-yadm-file :wk "yadm file"))
(my-leader-def
"cf" '(my/open-yadm-file :wk "yadm file"))
Elfeed
elfeed is one of the most popular Emacs packages, and it’s also one in which I ended up investing a lot of effort.
There’s a lot of stuff in this section, so it’s here and not in “Internet and Multimedia”.
General settings
The advice there sets shr-use-fonts to nil while rendering HTML, so the elfeed-show buffer will use monospace font.
Using my own fork until the modifications are merged into master.
(use-package elfeed
:straight (:repo "SqrtMinusOne/elfeed" :host github)
:if (not (or my/is-termux my/remote-server))
:commands (elfeed)
:init
(my-leader-def "ae" #'elfeed-summary)
(my/persp-add-rule
elfeed-summary-mode 0 "elfeed"
elfeed-search-mode 0 "elfeed"
elfeed-show-mode 0 "elfeed")
(setq shr-max-image-proportion 0.5)
:config
(setq elfeed-db-directory "~/.elfeed")
(setq elfeed-enclosure-default-dir (expand-file-name "~/Downloads"))
;; (advice-add #'elfeed-insert-html
;; :around
;; (lambda (fun &rest r)
;; (let ((shr-use-fonts nil))
;; (apply fun r))))
(general-define-key
:states '(normal)
:keymaps 'elfeed-search-mode-map
"o" #'my/elfeed-search-filter-source
"c" #'elfeed-search-clear-filter
"gl" (lambda () (interactive) (elfeed-search-set-filter "+later")))
(general-define-key
:states '(normal)
:keymaps 'elfeed-show-mode-map
"ge" #'my/elfeed-show-visit-eww))
elfeed-org allows configuring Elfeed feeds with an Org file.
(use-package elfeed-org
:straight t
:after (elfeed)
:config
(setq rmh-elfeed-org-files '("~/.emacs.d/private.org"))
(elfeed-org))
Some additions
Filter elfeed search buffer by the feed under the cursor.
(defun my/elfeed-search-filter-source (entry)
"Filter elfeed search buffer by the feed under cursor."
(interactive (list (elfeed-search-selected :ignore-region)))
(when (elfeed-entry-p entry)
(elfeed-search-set-filter
(concat
"@6-months-ago "
"+unread "
"="
(replace-regexp-in-string
(rx "?" (* not-newline) eos)
""
(elfeed-feed-url (elfeed-entry-feed entry)))))))
Open a URL with eww.
(defun my/elfeed-show-visit-eww ()
"Visit the current entry in eww"
(interactive)
(let ((link (elfeed-entry-link elfeed-show-entry)))
(when link
(eww link))))
Custom faces
Setting up custom faces for certain tags to make the feed look a bit nicer.
(defface elfeed-videos-entry nil
"Face for the elfeed entries with tag \"videos\"")
(defface elfeed-twitter-entry nil
"Face for the elfeed entries with tah \"twitter\"")
(defface elfeed-emacs-entry nil
"Face for the elfeed entries with tah \"emacs\"")
(defface elfeed-music-entry nil
"Face for the elfeed entries with tah \"music\"")
(defface elfeed-podcasts-entry nil
"Face for the elfeed entries with tag \"podcasts\"")
(defface elfeed-blogs-entry nil
"Face for the elfeed entries with tag \"blogs\"")
(defface elfeed-govt-entry nil
"Face for the elfeed entries with tag \"blogs\"")
(my/use-colors
(elfeed-search-tag-face :foreground (my/color-value 'yellow))
(elfeed-videos-entry :foreground (my/color-value 'red))
(elfeed-twitter-entry :foreground (my/color-value 'blue))
(elfeed-emacs-entry :foreground (my/color-value 'magenta))
(elfeed-music-entry :foreground (my/color-value 'green))
(elfeed-podcasts-entry :foreground (my/color-value 'yellow))
(elfeed-blogs-entry :foreground (my/color-value 'orange))
(elfeed-govt-entry :foreground (my/color-value 'dark-cyan)))
(with-eval-after-load 'elfeed
(setq elfeed-search-face-alist
'((podcasts elfeed-podcasts-entry)
(music elfeed-music-entry)
(gov elfeed-govt-entry)
(twitter elfeed-twitter-entry)
(videos elfeed-videos-entry)
(emacs elfeed-emacs-entry)
(blogs elfeed-blogs-entry)
(unread elfeed-search-unread-title-face))))
elfeed-summary
elfeed-summary is my package that provides a feed summary interface for elfeed.
The default interface of elfeed is just a list of all entries, so it gets hard to navigate when there are a lot of sources with varying frequencies of posts. This is my attempt to address this issue.
(use-package elfeed-summary
:commands (elfeed-summary)
:straight t
:config
(setq elfeed-summary-filter-by-title t)
(setq elfeed-summary-skip-sync-tag 'skip))
elfeed-sync
elfeed-sync is my package to sync elfeed with tt-rss.
(use-package elfeed-sync
:straight (:host github :repo "SqrtMinusOne/elfeed-sync")
:if (not my/remote-server)
:after elfeed
:config
(elfeed-sync-mode)
(setq elfeed-sync-tt-rss-instance "https://sqrtminusone.xyz/tt-rss")
(setq elfeed-sync-tt-rss-login "sqrtminusone")
(setq elfeed-sync-tt-rss-password (my/password-store-get "Selfhosted/tt-rss")))
YouTube, podcasts & EMMS
Previously this block was opening MPV with start-process, but now I’ve managed to hook up MPV with EMMS. So there is the EMMS+elfeed “integration”.
There are multiple kinds of entries that I want to be opened by EMMS. First, a function that returns a YouTube URL:
(defun my/get-youtube-url (entry)
(let ((watch-id (cadr
(assoc "watch?v"
(url-parse-query-string
(substring
(url-filename
(url-generic-parse-url (elfeed-entry-link entry)))
1))))))
(when watch-id
(concat "https://www.youtube.com/watch?v=" watch-id))))
Second, a function that returns a URL to an enclosure. This is generally how podcasts are distributed.
(defun my/get-enclosures-url (entry)
(caar (elfeed-entry-enclosures entry)))
And a package called elfeed-tube to fetch some additional data from YouTUbe.
(use-package elfeed-tube
:straight t
:after elfeed
:config
(setq elfeed-tube-auto-fetch-p nil)
(elfeed-tube-setup)
(general-define-key
:states 'normal
:keymaps '(elfeed-search-mode-map elfeed-show-mode-map)
"gf" #'elfeed-tube-fetch))
Now, a function to add a YouTube link with metadata from elfeed to EMMS.
(with-eval-after-load 'emms
(define-emms-source elfeed (entry)
(let ((url (or (my/get-enclosures-url entry)
(my/get-youtube-url entry))))
(unless url
(error "URL not found"))
(let ((track (emms-track 'url url)))
(emms-track-set track 'info-title (elfeed-entry-title entry))
(emms-playlist-insert-track track)))))
(defun my/elfeed-add-emms ()
(interactive)
(emms-add-elfeed elfeed-show-entry)
(elfeed-tag elfeed-show-entry 'watched)
(elfeed-show-refresh))
(with-eval-after-load 'elfeed
(general-define-key
:states '(normal)
:keymaps 'elfeed-show-mode-map
"gm" #'my/elfeed-add-emms))
rdrview
rdrview is a command-line tool to strip webpages from clutter, extracting only parts related to the actual content. It’s a standalone port of the corresponding feature of Firefox, called Reader View.
| Guix dependency |
|---|
| rdrview |
It seems like the tool isn’t available in a whole lot of package repositories, but it’s pretty easy to compile. I’ve put together a Guix definition, which one day I’ll submit to the upstream.
Integrating rdrview with Emacs
Let’s start by integrating rdrview with Emacs. In the general case, we want to fetch both metadata and the actual content from the page.
However, the interface of rdrview is a bit awkward in this part, so we have the following options:
- call
rdrviewtwo times: with-Mflag to fetch the metadata, and without the flag to fetch the HTML; - call
rdrviewwith-Tflag to append the metadata to the resulting HTML.
I’ve decided to go with the second option. Here is a function that calls rdrview with the required flags:
(defun my/rdrview-get (url callback)
"Get the rdrview representation of URL.
Call CALLBACK with the output."
(let* ((buffer (generate-new-buffer "rdrview"))
(proc (start-process "rdrview" buffer "rdrview"
url "-T" "title,sitename,body"
"-H")))
(set-process-sentinel
proc
(lambda (process _msg)
(let ((status (process-status process))
(code (process-exit-status process)))
(cond ((and (eq status 'exit) (= code 0))
(progn
(funcall callback
(with-current-buffer (process-buffer process)
(buffer-string)))
(kill-buffer (process-buffer process))) )
((or (and (eq status 'exit) (> code 0))
(eq status 'signal))
(let ((err (with-current-buffer (process-buffer process)
(buffer-string))))
(kill-buffer (process-buffer process))
(user-error "Error in rdrview: %s" err)))))))
proc))
The function calls callback with the output of rdrview. This usually doesn’t take long, but it’s still nice to avoid freezing Emacs that way.
Now we have to parse the output. The -T flag puts the title in the <h1> tag, the site name site in the <h2> tag, and the content in a <div>. What’s more, headers of the content are often shifted, e.g. the top-level header may well end up being and <h2> or <h3>, which does not look great in LaTeX.
With that said, here’s a function that does the required changes:
(defun my/rdrview-parse (dom-string)
(let ((dom (with-temp-buffer
(insert dom-string)
(libxml-parse-html-region (point-min) (point-max)))))
(let (title sitename content (i 0))
(dolist (child (dom-children (car (dom-by-id dom "readability-page-1"))))
(when (listp child)
(cond
((eq (car child) 'h1)
(setq title (dom-text child)))
((eq (car child) 'h2)
(setq sitename (dom-text child)))
((eq (car child) 'div)
(setq content child)))))
(while (and
(not (dom-by-tag content 'h1))
(dom-search
content
(lambda (el)
(when (listp el)
(pcase (car el)
('h2 (setf (car el) 'h1))
('h3 (setf (car el) 'h2))
('h4 (setf (car el) 'h3))
('h5 (setf (car el) 'h4))
('h6 (setf (car el) 'h5))))))))
`((title . ,title)
(sitename . ,sitename)
(content . ,(with-temp-buffer
(dom-print content)
(buffer-string)))))))
Using rdrview from elfeed
Because I didn’t find a smart way to advise the desired behavior into elfeed, here’s a modification of the elfeed-show-refresh--mail-style function with two changes:
- it uses
rdrviewto fetch the HTML; - it saves the resulting HTML into a buffer-local variable (we’ll need that later).
(defvar-local my/elfeed-show-rdrview-html nil)
(defun my/rdrview-elfeed-show ()
(interactive)
(unless elfeed-show-entry
(user-error "No elfeed entry in this buffer!"))
(my/rdrview-get
(elfeed-entry-link elfeed-show-entry)
(lambda (result)
(let* ((data (my/rdrview-parse result))
(inhibit-read-only t)
(title (elfeed-entry-title elfeed-show-entry))
(date (seconds-to-time (elfeed-entry-date elfeed-show-entry)))
(authors (elfeed-meta elfeed-show-entry :authors))
(link (elfeed-entry-link elfeed-show-entry))
(tags (elfeed-entry-tags elfeed-show-entry))
(tagsstr (mapconcat #'symbol-name tags ", "))
(nicedate (format-time-string "%a, %e %b %Y %T %Z" date))
(content (alist-get 'content data))
(feed (elfeed-entry-feed elfeed-show-entry))
(feed-title (elfeed-feed-title feed))
(base (and feed (elfeed-compute-base (elfeed-feed-url feed)))))
(erase-buffer)
(insert (format (propertize "Title: %s\n" 'face 'message-header-name)
(propertize title 'face 'message-header-subject)))
(when elfeed-show-entry-author
(dolist (author authors)
(let ((formatted (elfeed--show-format-author author)))
(insert
(format (propertize "Author: %s\n" 'face 'message-header-name)
(propertize formatted 'face 'message-header-to))))))
(insert (format (propertize "Date: %s\n" 'face 'message-header-name)
(propertize nicedate 'face 'message-header-other)))
(insert (format (propertize "Feed: %s\n" 'face 'message-header-name)
(propertize feed-title 'face 'message-header-other)))
(when tags
(insert (format (propertize "Tags: %s\n" 'face 'message-header-name)
(propertize tagsstr 'face 'message-header-other))))
(insert (propertize "Link: " 'face 'message-header-name))
(elfeed-insert-link link link)
(insert "\n")
(cl-loop for enclosure in (elfeed-entry-enclosures elfeed-show-entry)
do (insert (propertize "Enclosure: " 'face 'message-header-name))
do (elfeed-insert-link (car enclosure))
do (insert "\n"))
(insert "\n")
(if content
(elfeed-insert-html content base)
(insert (propertize "(empty)\n" 'face 'italic)))
(setq-local my/elfeed-show-rdrview-html content)
(goto-char (point-min))))))
That way, calling M-x my/rdrview-elfeed-show replaces the original content with one from rdrview.
(with-eval-after-load 'elfeed
(general-define-key
:states '(normal)
:keymaps 'elfeed-show-mode-map
"gp" #'my/rdrview-elfeed-show))
How well does it work?
Rather ironically, it works well with sites that already ship with proper RSS, like Protesilaos Stavrou’s or Karthik Chikmagalur’s blogs or The Atlantic magazine.
Of my other subscriptions, it does a pretty good job with The Verge, which by default sends entries truncated by the words “Read the full article”. For Ars Technica, it works only if the story is not large enough, otherwise the site returns its HTML-based pagination interface.
For paywalled sites such as New York Times or The Economist, this usually doesn’t work (by the way, what’s the problem with providing individual RSS feeds for subscribers?). If you need this kind of thing, I’d suggest using the RSS-Bridge project. And if something is not available, contributing business logic there definitely makes more sense than implementing workarounds in Emacs Lisp.
LaTeX and pandoc
However, I also find that I’m not really a fan of reading articles from Emacs. Somehow what works for program code doesn’t work that well for natural text. When I have to, I usually switch the Emacs theme to a light one.
But the best solution I’ve found so far is to render the required articles as PDFs. I may even print out some large articles I want to read.
Template
So first, we need a LaTeX template. Pandoc already ships with one, but I don’t like it too much, so I’ve put up a template from my LaTeX styles, targeting my preferred XeLaTeX engine.
The code for the template is available dotfiles repo. If you use LaTeX, you’ll probably be better off using your own setup. Be sure to define the following variables:
main-langandother-langfor polyglossia (or remove them if you have only one language)titlesubtitleauthordate
Invoking pandoc
Now that we have the template, let’s save it somewhere and store the path to a variable:
(setq my/rdrview-template (expand-file-name
(concat user-emacs-directory "rdrview.tex")))
And let’s invoke pandoc. We need to pass the following flags:
--pdf-engine=xelatex, of course--template <path-to-template>;-o <path-to-pdf>;--variable key=value.
In fact, pandoc is a pretty awesome tool in the sense that it allows for feeding custom variables to rich-language templates.
So, the rendering function is as follows:
(cl-defun my/rdrview-render (content type variables callback
&key file-name overwrite)
"Render CONTENT with pandoc.
TYPE is a file extension as supported by pandoc, for instance,
html or txt. VARIABLES is an alist that is fed into the
template. After the rendering is complete successfully, CALLBACK
is called with the resulting PDF.
FILE-NAME is a path to the resulting PDF. If nil it's generated
randomly.
If a file with the given FILE-NAME already exists, the function will
invoke CALLBACK straight away without doing the rendering, unless
OVERWRITE is non-nil."
(unless file-name
(setq file-name (format "/tmp/%d.pdf" (random 100000000))))
(let (params
(temp-file-name (format "/tmp/%d.%s" (random 100000000) type)))
(cl-loop for (key . value) in variables
when value
do (progn
(push "--variable" params)
(push (format "%s=%s" key value) params)))
(setq params (nreverse params))
(if (and (file-exists-p file-name) (not overwrite))
(funcall callback file-name)
(with-temp-file temp-file-name
(insert content))
(let ((proc (apply #'start-process
"pandoc" (get-buffer-create "*Pandoc*") "pandoc"
temp-file-name "-o" file-name
"--pdf-engine=xelatex" "--template" my/rdrview-template
params)))
(set-process-sentinel
proc
(lambda (process _msg)
(let ((status (process-status process))
(code (process-exit-status process)))
(cond ((and (eq status 'exit) (= code 0))
(progn
(message "Done!")
(funcall callback file-name)))
((or (and (eq status 'exit) (> code 0))
(eq status 'signal))
(user-error "Error in pandoc. Check the *Pandoc* buffer"))))))))))
Opening elfeed entries
Now we have everything required to open elfeed entries.
Also, in my case elfeed entries come in two languages, so I have to set main-lang and other-lang variables accordingly. Here’s the main function:
(setq my/elfeed-pdf-dir (expand-file-name "~/.elfeed/pdf/"))
(defun my/elfeed-open-pdf (entry overwrite)
"Open the current elfeed ENTRY with a pdf viewer.
If OVERWRITE is non-nil, do the rendering even if the resulting
PDF already exists."
(interactive (list elfeed-show-entry current-prefix-arg))
(let ((authors (mapcar (lambda (m) (plist-get m :name)) (elfeed-meta entry :authors)))
(feed-title (elfeed-feed-title (elfeed-entry-feed entry)))
(tags (mapconcat #'symbol-name (elfeed-entry-tags entry) ", "))
(date (format-time-string "%a, %e %b %Y"
(seconds-to-time (elfeed-entry-date entry))))
(content (elfeed-deref (elfeed-entry-content entry)))
(file-name (concat my/elfeed-pdf-dir
(elfeed-ref-id (elfeed-entry-content entry))
".pdf"))
(main-language "english")
(other-language "russian"))
(unless content
(user-error "No content!"))
(setq subtitle
(cond
((seq-empty-p authors) feed-title)
((and (not (seq-empty-p (car authors)))
(string-match-p (regexp-quote (car authors)) feed-title)) feed-title)
(t (concat (string-join authors ", ") "\\\\" feed-title))))
(when (member 'ru (elfeed-entry-tags entry))
(setq main-language "russian")
(setq other-language "english"))
(my/rdrview-render
(if (bound-and-true-p my/elfeed-show-rdrview-html)
my/elfeed-show-rdrview-html
content)
(elfeed-entry-content-type entry)
`((title . ,(elfeed-entry-title entry))
(subtitle . ,subtitle)
(date . ,date)
(tags . ,tags)
(main-lang . ,main-language)
(other-lang . ,other-language))
(lambda (file-name)
(start-process "xdg-open" nil "xdg-open" file-name))
:file-name file-name
:overwrite current-prefix-arg)))
If the my/elfeed-show-rdrview-html variable is bound and true, then the content in this buffer was retrieved via rdrview, so we’ll use that instead of the output of elfeed-deref.
(with-eval-after-load 'elfeed
(general-define-key
:keymaps '(elfeed-show-mode-map)
:states '(normal)
"gv" #'my/elfeed-open-pdf))
Now we can open elfeed entries in a PDF viewer, which I find much nicer to read. Given that RSS feeds generally ship with simpler HTML than the regular websites, results usually look awesome.
Opening arbitrary sites
As you may have noticed, we also can display arbitrary web pages with this setup, so let’s go ahead and implement that:
(defun my/get-languages (url)
(let ((main-lang "english")
(other-lang "russian"))
(when (string-match-p (rx ".ru") url)
(setq main-lang "russian"
other-lang "english"))
(list main-lang other-lang)))
(defun my/rdrview-open (url overwrite)
(interactive
(let ((url (read-from-minibuffer
"URL: "
(if (bound-and-true-p elfeed-show-entry)
(elfeed-entry-link elfeed-show-entry)))))
(when (string-empty-p url)
(user-error "URL is empty"))
(list url current-prefix-arg)))
(my/rdrview-get
url
(lambda (res)
(let ((data (my/rdrview-parse res))
(langs (my/get-languages url)))
(my/rdrview-render
(alist-get 'content data)
'html
`((title . ,(alist-get 'title data))
(subtitle . ,(alist-get 'sitename data))
(main-lang . ,(nth 0 langs))
(other-lang . ,(nth 1 langs)))
(lambda (file-name)
(start-process "xdg-open" nil "xdg-open" file-name)))))))
Unfortunately, this part doesn’t work that well, so we can’t just uninstall Firefox or Chromium and browse the web from a PDF viewer.
The most common problem I’ve encountered is incorrectly formed pictures, such as .png files without the boundary info. I’m sure you’ve also come across this if you ever tried to insert a lot of Internet pictures into a LaTeX document.
However, sans the pictures issue, for certain sites like Wikipedia this is usable.
YouTube transcripts
Getting subtitles
Finally, let’s get to transcripts.
| Guix package |
|---|
| python-youtube-transcript-api |
In principle, the YouTube API allows for downloading subtitles, but I’ve found this awesome Python script which does the same. You can install it from pip, or here’s mine Guix definition once again.
Much like the previous cases, we need to invoke the program and save the output. The WebVTT format will work well enough for our purposes. Here comes the function:
(cl-defun my/youtube-subtitles-get (video-id callback &key file-name overwrite)
"Get subtitles for VIDEO-ID in WebVTT format.
Call CALLBACK when done.
FILE-NAME is a path to the resulting WebVTT file. If nil it's
generated randomly.
If a file with the given FILE-NAME already exists, the function will
invoke CALLBACK straight away without doing the rendering, unless
OVERWRITE is non-nil."
(unless file-name
(setq file-name (format "/tmp/%d.vtt" (random 100000000))))
(if (and (file-exists-p file-name) (not overwrite))
(funcall callback file-name)
(let* ((buffer (generate-new-buffer "youtube-transcripts"))
(proc (start-process "youtube_transcript_api" buffer
"youtube_transcript_api" video-id
"--languages" "en" "ru" "de"
"--format" "webvtt")))
(set-process-sentinel
proc
(lambda (process _msg)
(let ((status (process-status process))
(code (process-exit-status process)))
(cond ((and (eq status 'exit) (= code 0))
(progn
(with-current-buffer (process-buffer process)
(setq buffer-file-name file-name)
(save-buffer))
(kill-buffer (process-buffer process))
(funcall callback file-name)))
((or (and (eq status 'exit) (> code 0))
(eq status 'signal))
(let ((err (with-current-buffer (process-buffer process)
(buffer-string))))
(kill-buffer (process-buffer process))
(user-error "Error in youtube_transcript_api: %s" err)))))))
proc)))
elfeed and subed
Now that we have a standalone function, let’s invoke it with the current elfeed-show-entry:
(setq my/elfeed-srt-dir (expand-file-name "~/.elfeed/srt/"))
(defun my/elfeed-youtube-subtitles (entry &optional arg)
"Get subtitles for the current elfeed ENTRY.
Works only in the entry is a YouTube video.
If ARG is non-nil, re-fetch the subtitles regardless of whether
they were fetched before."
(interactive (list elfeed-show-entry current-prefix-arg))
(let ((video-id (cadr
(assoc "watch?v"
(url-parse-query-string
(substring
(url-filename
(url-generic-parse-url (elfeed-entry-link entry)))
1))))))
(unless video-id
(user-error "Can't get video ID from the entry"))
(my/youtube-subtitles-get
video-id
(lambda (file-name)
(with-current-buffer (find-file-other-window file-name)
(setq-local elfeed-show-entry entry)
(goto-char (point-min))))
:file-name (concat my/elfeed-srt-dir
(elfeed-ref-id (elfeed-entry-content entry))
".vtt")
:overwrite arg)))
That opens up a .vtt buffer with the subtitles for the current video, which means now we can use the functionality of Sacha Chua’s awesome package called subed.
This package, besides syntax highlighting, allows for controlling the MPV playback, for instance by moving the cursor in the subtitles buffer. Using that requires having the URL of the video in this buffer, which necessitates the line with setq-local in the previous function.
Also, the package launches its own instance of MPV to control it via JSON-IPC, so there seems to be no easy way to integrate it with EMMS. But at least I can reuse the emms-player-mpv-parameters variable, the method of setting which I’ve discussed above. The function is as follows:
(defun my/subed-elfeed (entry)
"Open the video file from elfeed ENTRY in MPV.
This has to be launched from inside the subtitles buffer, opened
by the `my/elfeed-youtube-subtitles' function."
(interactive (list elfeed-show-entry))
(unless entry
(user-error "No entry!"))
(unless (derived-mode-p 'subed-mode)
(user-error "Not subed mode!"))
(setq-local subed-mpv-arguments
(seq-uniq
(append subed-mpv-arguments emms-player-mpv-parameters)))
(setq-local subed-mpv-video-file (elfeed-entry-link entry))
(subed-mpv--play subed-mpv-video-file))
Keep in mind that this function has to be launched inside the buffer opened by the my/elfeed-youtube-subtitles function.
Podcast transcripts
In my experience, finding something in a podcast can be particularly troublesome. For instance, at times, I want to refer to a specific line in the podcast to make an org-roam node, and I need to check if I got that part right. And I have no reasonable way to get there because audio files, in themselves, don’t allow for random access, i.e. there are no “landmarks” that point to a particular portion of the file. At least if nothing like a transcript is available.
For obvious reasons, podcasts rarely ship with transcripts. So in this post section I’ll be using a speech recognition engine to make up for that. The general idea is to obtain the podcast information from elfeed, process it with OpenAI Whisper and feed it to subed to control the playback in MPV.
Edit : Changed vosk-api to OpenAI Whisper.
Whisper
OpenAI Whisper is an amazing speech recognition toolkit.
The implementation by OpenAI is rather slow on my PC (speed around 0.75 on tiny.en), but whisper.cpp by Georgi Gerganov works much faster (5.9x). I’ve packaged the latter for Guix.
| Guix dependency |
|---|
| whisper-cpp |
Running it from Emacs
Running the program from Emacs is rather straightforward with asyncronous processes.
I’m using an English-language-only model because that’s the only language I need at the moment.
(defun my/invoke-whisper--direct (input output-dir remove-wav)
"Extract subtitles from a WAV audio file.
INPUT is the absolute path to audio file, OUTPUT-DIR is the path to
the directory with resulting files."
(let* ((default-directory output-dir)
(buffer (generate-new-buffer "whisper"))
(proc (start-process
"whisper" buffer
"whisper-cpp" "--model" "/home/pavel/.whisper/ggml-tiny.en.bin"
"-otxt" "-ovtt" "-osrt" input)))
(set-process-sentinel
proc
(lambda (process _msg)
(let ((status (process-status process))
(code (process-exit-status process)))
(cond ((and (eq status 'exit) (= code 0))
(notifications-notify :body "Audio conversion completed"
:title "Whisper")
(when remove-wav
(delete-file input))
(dolist (extension '(".txt" ".vtt" ".srt"))
(rename-file (concat input extension)
(concat (file-name-sans-extension input) extension)))
(kill-buffer (process-buffer process)))
((or (and (eq status 'exit) (> code 0))
(eq status 'signal))
(let ((err (with-current-buffer (process-buffer process)
(buffer-string))))
(user-error "Error in Whisper: %s" err)))))))))
(defun my/invoke-whisper (input output-dir)
"Extract subtitles from the audio file.
INPUT is the absolute path to the audio file, OUTPUT-DIR is the path
to the directory with resulting files.
Run ffmpeg if the file is not WAV."
(interactive
(list
(read-file-name "Input file: " nil nil t)
(read-directory-name "Output directory: ")))
(if (string-match-p (rx ".wav" eos) input)
(my/invoke-whisper--direct input output-dir)
(let* ((ffmpeg-proc
(start-process
"ffmpef" nil "ffmpeg" "-i" input "-ar" "16000" "-ac" "1" "-c:a"
"pcm_s16le" (concat (file-name-sans-extension input) ".wav"))))
(set-process-sentinel
ffmpeg-proc
(lambda (process _msg)
(let ((status (process-status process))
(code (process-exit-status process)))
(cond ((and (eq status 'exit) (= code 0))
(my/invoke-whisper--direct
(concat (file-name-sans-extension input) ".wav") output-dir t))
((or (and (eq status 'exit) (> code 0))
(eq status 'signal))
(let ((err (with-current-buffer (process-buffer process)
(buffer-string))))
(user-error "Error in running ffmpeg: %s" err))))))))))
If run interactively, the defined function prompts for paths to both files.
The process sentinel sends a desktop notification because it’s a bit more noticeable than message, and the process is expected to take some time.
Integrating with elfeed
To actually run the function from the section above, we need to download the file in question.
The whisper executable, given the file <file>.<extension>, creates files named <file>.vtt, <file>.srt, <file>.txt. So first we need to save the file under the correct name.
I use a library called request.el to download files elsewhere, so I’ll re-use it here. You can just as well invoke curl or wget via a asynchronous process.
This function downloads the file to a non-temporary folder, which is ~/.elfeed/podcast-files/ if you didn’t move the elfeed database. That is so because a permanently downloaded file works better for the next section.
(with-eval-after-load 'elfeed
(defvar my/elfeed-whisper-podcast-files-directory
(concat elfeed-db-directory "/podcast-files/")))
(defun my/elfeed-whisper-get-transcript-new (entry)
(interactive (list elfeed-show-entry))
(let* ((url (caar (elfeed-entry-enclosures entry)))
(file-name (concat
(elfeed-ref-id (elfeed-entry-content entry))
"."
(file-name-extension url)))
(file-path (expand-file-name
(concat
my/elfeed-whisper-podcast-files-directory
file-name))))
(message "Download started")
(unless (file-exists-p my/elfeed-whisper-podcast-files-directory)
(mkdir my/elfeed-whisper-podcast-files-directory))
(request url
:type "GET"
:encoding 'binary
:complete
(cl-function
(lambda (&key data &allow-other-keys)
(let ((coding-system-for-write 'binary)
(write-region-annotate-functions nil)
(write-region-post-annotation-function nil))
(write-region data nil file-path nil :silent))
(message "Conversion started")
(my/invoke-whisper file-path my/elfeed-srt-dir)))
:error
(cl-function
(lambda (&key error-thrown &allow-other-keys)
(message "Error!: %S" error-thrown))))))
I also experimented with a bunch of options to write binary data in Emacs, of which the way with write-region (as implemented in f.el) seems to be the fastest. This thread on StackExchange suggests that it may screw some bytes towards the end, but whether or not this is the case, mp3 files survive the procedure. The proposed solution with seq-doseq takes at least a few seconds.
As my/invoke-whisper creates multiple files, here’s a function to select related files:
(defun my/elfeed-show-related-files (entry)
(interactive (list elfeed-show-entry))
(let* ((files
(mapcar
(lambda (file) (cons (file-name-extension file) file))
(seq-filter
(lambda (file)
(string-match-p
(rx bos (literal (elfeed-ref-id (elfeed-entry-content entry))) ".")
file))
(directory-files my/elfeed-srt-dir))))
(buffer
(find-file-other-window
(concat
my/elfeed-srt-dir
(alist-get
(completing-read "