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init.el
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init.el
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;;; init.el --- Initialization file. -*- lexical-binding: t; -*-
;; Copyright (C) 2019-2024 Serghei Iakovlev <[email protected]>
;; Author: Serghei Iakovlev <[email protected]>
;; URL: https://github.com/sergeyklay/.emacs.d
;; Keywords: configuration, misc
;; This file is NOT part of Emacs.
;;;; License
;; This file is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License
;; as published by the Free Software Foundation; either version 3
;; of the License, or (at your option) any later version.
;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this file. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Welcome to my GNU Emacs haven. This configuration is a reflection of my
;; desire for a "minimalist" yet powerful editing environment.
;;
;; I started this project on 4 March 2019 from this commit:
;; eb11ce25b0866508e023db4b8be6cca536cd3044
;;; Code:
;;;; Profiling and Debug
(defconst emacs-debug-mode (or (getenv "DEBUG") init-file-debug)
"If non-nil, Emacs will be verbose.
Set DEBUG=1 in the command line or use --debug-init to enable this.")
;; Set the `debug-on-error' variable as per the runtime context:
;; - Enable debugging on error if Emacs is running in interactive mode, and the
;; custom variable `emacs-debug-mode' is true.
;; - Do not enable debugging on error in non-interactive mode, regardless of the
;; `emacs-debug-mode' value.
(setq-default debug-on-error (and (not noninteractive) emacs-debug-mode))
;; Measure the current start up time.
(add-hook
'emacs-startup-hook
(lambda ()
(message "Emacs ready in %s with %d garbage collections."
(format "%.2f seconds"
(float-time
(time-subtract after-init-time before-init-time)))
gcs-done)))
;;;; Personal Info
;; Used for `gnus', `erc', and so non.
(setopt user-full-name "Serghei Iakovlev")
;;;; Packages management
;; Package management in Emacs can be done in several ways. I personally like
;; classic one with `package.el'. Some will prefer straight.el, use-package,
;; and so on, but I haven't found the need for them.
(require 'package)
;; Setting up package archives.
(add-to-list 'package-archives '( "melpa" . "https://melpa.org/packages/") t)
;; Priorities. Default priority is 0.
(setq package-archive-priorities
'(("gnu" . 100)
("nongnu" . 50)
("melpa" . 10)))
;; Precompute activation actions to speed up startup.
(setq package-quickstart t)
;; Enable native compilation of packages upon their first load,
;; leveraging Emacs's native compilation feature for performance.
(setq package-native-compile t)
(package-initialize)
(defun ensure-package-installed (package)
"Ensure that PACKAGE is installed."
(unless (package-installed-p package)
(condition-case _err
(package-install package)
(error
(package-refresh-contents)
(package-install package))))
(package-installed-p package))
;; package.el updates the saved version of `package-selected-packages' correctly
;; only after `custom-file' has been loaded, which is a bug. We work around
;; this by adding the required packages to `package-selected-packages' after
;; startup is complete. This code borrowed from Steve Purcell configuration.
(defvar my-required-packages nil
"List of packages that were successfully installed.")
(defun my-note-selected-package (oldfun package &rest args)
"If OLDFUN reports PACKAGE was successfully installed, note that fact.
The package name is noted by adding it to
`my-required-packages'. This function is used as an
advice for `require-package', to which ARGS are passed."
(let ((available (apply oldfun package args)))
(prog1
available
(when available
(add-to-list 'my-required-packages package)))))
(advice-add 'ensure-package-installed :around 'my-note-selected-package)
(defconst my-selected-packages
'(anzu ; Show current match and total matches information
anaconda-mode ; Python IDE support
avy ; Jump to things in Emacs tree-style
benchmark-init ; Benchmarks for require and load calls
cask-mode ; Major mode for editing Cask files
consult ; Incremental narrowing framework
consult-flyspell ; Flyspell integration with Consult
csv-mode ; CSV file editing mode
embark ; Contextual actions in buffers
embark-consult ; Embark integration with Consult
erc-hl-nicks ; Nick highlighting in ERC (IRC client)
flyspell-correct ; Correct spelling with popup menus
git-modes ; Modes for Git-related files
htmlize ; Convert buffer text to HTML
json-mode ; Major mode for editing JSON files
magit ; The Git porcelain inside Emacs
marginalia ; Annotations for completions
markdown-mode ; Major mode for Markdown files
orderless ; Flexible completion style
org-cliplink ; Capture clipboard URLs to Org mode
ox-hugo ; Blogging using org-mode
pass ; Interface to the Password Store
password-store ; Emacs interface for password-store
prescient ; Predictive sorting and filtering
rainbow-delimiters ; Color nested parentheses
rainbow-mode ; Colorize color values in buffers
sql-indent ; Indentation support for SQL
vertico ; Vertical interactive completion
vertico-prescient ; Prescient integration with Vertico
which-key ; Display available keybindings
writegood-mode ; Improve writing style
yaml-mode ; Major mode for YAML files
web-mode) ; Web template editing mode for emacs
"A list of packages that are selected for installation.")
;; Install packages as soon as possible.
(dolist (package my-selected-packages)
(ensure-package-installed package))
;;;; Benchmark
(require 'benchmark-init)
(add-hook 'after-init-hook #'benchmark-init/deactivate)
;;;; Setup keymap
;; Create and setup my own keyboard map.
;; For details see:
;; https://www.masteringemacs.org/article/mastering-key-bindings-emacs
(defvar my-keyboard-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd ";") #'comment-or-uncomment-region)
(define-key map (kbd "-") #'text-scale-decrease)
(define-key map (kbd "+") #'text-scale-increase)
;; because "+" needs "S-=" and I might forget to press shift
(define-key map (kbd "=") #'text-scale-increase)
map)
"My own keyboard map.")
;; As stated in the manual:
;;
;; A small number of keys are reserved for user-defined bindings, and should not
;; be used by modes, so key bindings using those keys are safer in this regard.
;; The reserved key sequences are those consisting of C-c followed by a letter
;; (either upper or lower case), and function keys F5 through F9 without
;; modifiers
(keymap-global-set "C-c s" my-keyboard-map)
;; Load `which-key' and enable `which-key-mode'.
(add-hook 'after-init-hook #'which-key-mode)
;; Increase the delay for which-key buffer to popup.
(setq-default which-key-idle-delay 1.5)
;;;; System Path
(cond
((eq system-type 'windows-nt)
(let ((chocolatey-bin "C:/ProgramData/chocolatey/bin"))
;; Only add the directory to `exec-path' if it exists
;; and is not already present
(when (and (file-directory-p chocolatey-bin)
(not (member chocolatey-bin exec-path)))
(add-to-list 'exec-path chocolatey-bin)))))
;;;; Common functions
(defun my-ensure-directory-exists (dir)
"Ensure that the directory DIR exists, create it if it doesn't."
(unless (file-exists-p dir)
(make-directory dir t)))
(defun my/switch-to-scratch ()
"Get a scratch buffer."
(interactive)
(let* ((name "*scratch*")
(buf (get-buffer name)))
(pop-to-buffer
(if (bufferp buf)
buf ; Existing scratch buffer
;; New scratch buffer
(with-current-buffer (get-buffer-create name)
(current-buffer))))))
(define-key my-keyboard-map (kbd "s") #'my/switch-to-scratch)
(defun my/insert-current-date-iso-8601 ()
"Insert the current date and time in ISO 8601 format (YYYY-MM-DDTHH:MM:SSZ)."
(interactive)
(insert (format-time-string "%Y-%m-%dT%H:%M:%SZ" (current-time) t)))
(define-key my-keyboard-map (kbd "D") #'my/insert-current-date-iso-8601)
(defun my/reload-current-mode ()
"Reload the current major mode.
This function temporarily switches the current buffer's major
mode to `fundamental-mode' and then back to the original major
mode. This is useful when you've re-evaluated a major mode's
definition (e.g., using `eval-buffer' on the mode's source file)
and want to apply the changes to the current buffer.
After modifying and evaluating your mode's source code, call this
function to refresh the mode in the mode related buffer and see
the changes take effect."
(interactive)
(let ((current-mode major-mode)
(load-prefer-newer t))
(fundamental-mode)
(when (locate-library (concat (symbol-name current-mode) ".el"))
(unload-feature current-mode)
(load (concat (symbol-name current-mode) ".el")))
(funcall current-mode)))
(global-set-key (kbd "C-<f5>") #'my/reload-current-mode)
;;;; Backup
;; Silently deletes excess backup versions.
(setq delete-old-versions t)
;; Make numeric backup versions unconditionally.
(setq version-control t)
;; Make backup files even in version controlled directories.
(setq vc-make-backup-files t)
;; Keep all backups in one directory.
(let ((my-backup-dir (expand-file-name "backup" user-emacs-directory)))
(setopt backup-directory-alist
`(("." . ,(file-name-as-directory my-backup-dir))))
(my-ensure-directory-exists my-backup-dir))
;;;; Auto-Saving
(let ((save-dir (expand-file-name "auto-save-list" user-emacs-directory)))
(setopt auto-save-file-name-transforms
`((".*" ,(concat (file-name-as-directory save-dir) "\\2") t)))
(setopt auto-save-list-file-name
(expand-file-name (format ".saves-%d-%s~" (emacs-pid) (system-name))
save-dir))
(my-ensure-directory-exists save-dir))
;;;; History
;; Set the maximum number of entries to save in the history. A larger value
;; allows for a more extensive history, which can be handy if you often need
;; to recall older entries.
(setopt history-length 1000)
;; Enable the removal of duplicate entries in the history.
(setopt history-delete-duplicates t)
;; Enable `save-place-mode' to save point position in files across sessions. It
;; ensures that you return to the exact spot where you left off, enhancing
;; workflow efficiency. Only enable in interactive mode.
(when (not noninteractive)
(add-hook 'after-init-hook #'save-place-mode))
;; Enable `savehist-mode', which automatically saves the minibuffer history
;; to a file and loads it on startup, preserving your history between sessions.
;; Only enable in interactive mode.
(when (not noninteractive)
(add-hook 'after-init-hook #'savehist-mode))
;; Enable `recentf-mode' to keep track of recently opened files.
;; Only enable in interactive mode.
(when (not noninteractive)
(add-hook 'after-init-hook #'recentf-mode))
(with-eval-after-load 'recentf
;; Set the maximum number of recent files to save.
(setopt recentf-max-saved-items 1000)
;; Update `recentf-exclude' to exclude specific paths and files
;; I din't need in the list.
(setopt recentf-exclude
`(,(temporary-file-directory)
,(concat (file-name-as-directory package-user-dir)
".*-autoloads\\.el\\'")))
;; Set up an idle timer to save the recent list every 3 minutes
(run-with-idle-timer (* 3 60) t #'recentf-save-list))
;;;; Sane defaults
;; Disable the startup screen, allowing for a quicker start directly into
;; your working environment.
(setq-default inhibit-startup-screen t)
;; Disable the creation of lockfiles on Windows, as they can cause issues
;; with file systems on that platform.
(setq-default create-lockfiles (not (member system-type '(windows-nt))))
;; Visually indicate empty lines after the buffer's end.
(setq-default indicate-empty-lines t)
;; Customize the format of the mode line to show line and column numbers
;; in the format "278:59".
(setq-default mode-line-position
'((line-number-mode ("%l" (column-number-mode ":%c")))))
;; Enable column number mode to display column numbers in the mode line.
(column-number-mode t)
;; Highlight trailing whitespace in text-mode and prog-mode.
(add-hook 'text-mode-hook (lambda () (setq show-trailing-whitespace t)))
(add-hook 'prog-mode-hook (lambda () (setq show-trailing-whitespace t)))
;; Set `source-directory' to the local Emacs source directory.
;; Used to understand and debug built-in Emacs functions.
(let ((src (if (eq system-type 'windows-nt)
"D:/src/emacs.git"
(expand-file-name "~/src/emacs.git"))))
;; Check if the directory exists and is
;; not remote before setting `source-directory`.
(when (and (file-directory-p src)
(not (file-remote-p src)))
(setopt source-directory src)))
;;;; Search
(defun my-isearch-exit-and-run (function)
"Exit `isearch' and run FUNCTION with the current `isearch' string."
(let ((query (if isearch-regexp
isearch-string
(regexp-quote isearch-string))))
(isearch-update-ring isearch-string isearch-regexp)
(isearch-exit)
(funcall function query)))
(defun my-occur-from-isearch ()
"Invoke `occur' using the current `isearch' string."
(interactive)
(my-isearch-exit-and-run #'occur))
(defun my-project-search-from-isearch ()
"Invoke `project-find-regexp' using the current `isearch' string."
(interactive)
(my-isearch-exit-and-run #'project-find-regexp))
;; Invoke `occur' using the current `isearch' string.
(define-key isearch-mode-map (kbd "C-o") #'my-occur-from-isearch)
;; Invoke `project-find-regexp' using the current `isearch' string.
(define-key isearch-mode-map (kbd "C-f") #'my-project-search-from-isearch)
;; Do incremental search forward for a symbol found near point.
(define-key isearch-mode-map (kbd "C-d") #'isearch-forward-symbol-at-point)
;; Jump to search results instead of having to do multiples C-s.
(define-key isearch-mode-map (kbd "C-j") #'avy-isearch)
;; Interactive replacement:
;; - M-% to call `anzu-isearch-query-replace'
;; - C-M-% to call `anzu-isearch-query-replace-regexp'
(define-key isearch-mode-map [remap isearch-query-replace]
#'anzu-isearch-query-replace)
(define-key isearch-mode-map [remap isearch-query-replace-regexp]
#'anzu-isearch-query-replace-regexp)
(defun my-isearch-start-from-region (orig-fn &rest args)
"Advice to start `isearch' with the active region or symbol at point.
This advice function enhances `isearch' commands by using the
current active region as the initial search string when
available. If the region is active and `transient-mark-mode' is
enabled, the region's content is used. Otherwise, the original
search behavior is preserved.
ORIG-FN is the original isearch function being advised.
ARGS are the arguments passed to the original isearch function."
(let ((search-string
(when (and transient-mark-mode mark-active (not (eq (mark) (point))))
(buffer-substring-no-properties (mark) (point)))))
;; Deactivate mark if a region was used for search initialization.
(when search-string
(isearch-update-ring search-string)
(deactivate-mark))
;; Call the original isearch function.
(apply orig-fn args)
;; Yank the search string if set.
(when search-string
(isearch-yank-string
(if isearch-regexp
search-string
(regexp-quote search-string))))))
;; Add the advice to all relevant isearch functions.
(dolist (fn '(isearch-forward
isearch-forward-regexp
isearch-backward
isearch-backward-regexp))
(advice-add fn :around #'my-isearch-start-from-region))
(defun my-occur-visit-result-and-close ()
"Visit the occurrence at point and close the Occur window."
(interactive)
(let ((pos (occur-mode-find-occurrence)))
(when pos
(quit-window)
(goto-char pos))))
;; Bind M-<return> to visit the occurrence and close the window.
(define-key occur-mode-map (kbd "M-<return>") #'my-occur-visit-result-and-close)
;; Enable `hl-line-mode` in `occur-mode` buffers.
(add-hook 'occur-mode-hook (lambda () (hl-line-mode 1)))
;; Use ripgrep if installed
(when (executable-find "rg")
(setopt xref-search-program 'ripgrep))
(defun my|xref-setup-environment ()
"Set up a tailored environment for `xref--xref-buffer-mode' buffers."
;; Enable `hl-line-mode' in `xref' buffers.
(hl-line-mode 1)
;; Bind M-<return> to visit the occurrence and close the window.
(define-key xref--xref-buffer-mode-map (kbd "M-<return>")
#'xref-quit-and-goto-xref))
(add-hook 'xref--xref-buffer-mode-hook #'my|xref-setup-environment)
;;;; Spell
(require 'ispell)
;; Automatically save the personal dictionary without asking for confirmation.
(setopt ispell-silently-savep t)
(when (eq system-type 'windows-nt)
(let ((dic-dir (or (getenv "DICPATH") "C:/Hunspell"))
(hunspell-bin (executable-find "hunspell")))
(when (and hunspell-bin (file-exists-p dic-dir))
;; Set environment variables for Hunspell
(unless (getenv "LANG") (setenv "LANG" "en_US"))
(unless (getenv "DICPATH") (setenv "DICPATH" dic-dir))
(defun my--build-dict-path (lang ext)
"Build the full path to the dictionary file for LANG and EXT."
(expand-file-name (concat lang ext) (file-name-as-directory dic-dir)))
;; Find all available .aff files in the dictionary directory
(let ((dict-files (directory-files dic-dir t "\\.aff$"))
dict-paths)
(dolist (dict-file dict-files)
;; Extract language code from file name
;; (e.g., "en_US" from "en_US.aff")
(let ((lang (file-name-base dict-file)))
;; Add dictionary to the alist if both .aff and .dic files exist
(when (file-exists-p (my--build-dict-path lang ".dic"))
(push (list lang (my--build-dict-path lang ".aff")) dict-paths))))
;; Set `ispell-hunspell-dict-paths-alist' dynamically
;; if there are valid dictionaries
(when dict-paths
(setq ispell-hunspell-dict-paths-alist dict-paths))
;; Use Hunspell as the spell checker. This should be set after
;; `ispell-hunspell-dict-paths-alist', "LANG" and "DICPATH" environment
;; variables due to `setopt' nature.
(setopt ispell-program-name hunspell-bin)))))
;; Configure the list of my dictionaries.
;; Note: Homebrew on macOS, and Chocolatey on Windows does not provide
;; dictionaries by default. You will need to install them manually.
(let ((valid-dicts (ispell-valid-dictionary-list))
(dicts-alist nil))
;; Add English dictionary
(when (member "en_US" valid-dicts)
;; Define the default dictionary to be used.
(setopt ispell-local-dictionary "en_US")
(push '("english" "[[:alpha:]]" "[^[:alpha:]]" "[']" t
("-d" "en_US") nil utf-8)
dicts-alist))
;; Add Polish dictionary
(let ((pl-dict (cond
((member "pl" valid-dicts) "pl")
((member "pl_PL" valid-dicts) "pl_PL")
(t nil))))
(when pl-dict
(push `("polish" "[[:alpha:]]" "[^[:alpha:]]" "[']" t
("-d" ,pl-dict) nil utf-8)
dicts-alist)))
;; Add Russian dictionary
(let ((ru-dict (cond
((member "ru-yeyo" valid-dicts) "ru-yeyo")
((member "russian-aot-ieyo" valid-dicts) "russian-aot-ieyo")
((member "ru_RU" valid-dicts) "ru_RU")
(t nil))))
(when ru-dict
(push `("russian" "[А-Яа-я]" "[^А-Яа-я]" "[-']" nil
("-d" ,ru-dict) nil utf-8)
dicts-alist)))
(setopt ispell-local-dictionary-alist dicts-alist))
;; Be silent when checking words to avoid unnecessary messages.
(setopt flyspell-issue-message-flag nil)
(with-eval-after-load 'flyspell
;; These keys are intended for `embark'
(dolist (key '("C-;" "C-," "C-."))
(unbind-key key flyspell-mode-map)))
;; Load `writegood-mode' and set up hooks.
(with-eval-after-load 'writegood-mode
(add-hook 'text-mode-hook #'writegood-mode)
(add-hook 'latex-mode-hook #'writegood-mode))
;;;; Security
(defconst my-gpg-program
(cond
((executable-find "gpg") "gpg")
((executable-find "gpg2") "gpg2")
(t nil))
"Path to the GPG program to use.
If neither gpg nor gpg2 is found, this is set to nil.")
;; Check if GPG is available, then set `epg-gpg-program',
;; otherwise display a warning.
(if my-gpg-program
(setq epg-gpg-program my-gpg-program)
(warn (concat "Neither gpg nor gpg2 is available. "
"Encryption and decryption features will not be available.")))
;; Initialize epa settings
(unless (eq (window-system) 'w32)
;; Set pinentry mode to loopback for all systems except Windows.
;; For more see "man 1 gpg" for the option "--pinentry-mode".
(setopt epg-pinentry-mode 'loopback))
;; GnuPG ID of your default identity.
(setq epg-user-id "1E0B5331219BEA88")
;; Specify the key to use for file encryption
;; Also used for `org-crypt-key' (see bellow).
(setq epa-file-encrypt-to `(,epg-user-id))
;; Enable automatic encryption/decryption of *.gpg files
(require 'epa-file)
;; Only enable `epa-file' if it's not already enabled
(unless (memq epa-file-handler file-name-handler-alist)
(epa-file-enable))
;; Setup `pass-view-mode' iff pass executable is available.
(when (executable-find "pass")
(my-ensure-directory-exists (expand-file-name "~/.password-store"))
(require 'pass)
(with-eval-after-load 'pass
;; Associate .gpg files in the pass directory with `pass-view-mode'.
(add-to-list
'auto-mode-alist (cons "~/.password-store/.*\\.gpg\\'" 'pass-view-mode))))
;;;; Calendar
;; Disable not used holidays
(setq-default holiday-hebrew-holidays nil)
(setq-default holiday-islamic-holidays nil)
(setq-default holiday-bahai-holidays nil)
(setq-default holiday-oriental-holidays nil)
(setq-default holiday-solar-holidays nil)
(setq-default holiday-christian-holidays nil)
(defconst my-polish-holidays
'((holiday-fixed 1 1 "Nowy Rok (Poland)")
(holiday-fixed 5 1 "Święto Pracy (Poland)")
(holiday-fixed 5 3 "Święto Konstytucji 3 Maja (Poland)")
(holiday-fixed 8 15 "Wniebowzięcie Najświętszej Maryi Panny (Poland)")
(holiday-fixed 11 1 "Wszystkich Świętych (Poland)")
(holiday-fixed 11 11 "Święto Niepodległości (Poland)")
(holiday-fixed 12 25 "Boże Narodzenie (Poland)")
(holiday-fixed 12 26 "Drugi dzień Bożego Narodzenia (Poland)"))
"Polish public holidays.")
(defvar my-ukrainian-holidays
'((holiday-fixed 1 1 "Новий рік (Ukraine)")
(holiday-fixed 1 7 "Різдво Христове (Ukraine)")
(holiday-fixed 3 8 "Міжнародний жіночий день (Ukraine)")
(holiday-fixed 4 1 "День гумору (Ukraine)")
(holiday-fixed 5 1 "День праці (Ukraine)")
(holiday-fixed 5 9 "День перемоги (Ukraine)")
(holiday-fixed 6 28 "День Конституції України (Ukraine)")
(holiday-fixed 8 24 "День Незалежності України (Ukraine)")
(holiday-fixed 10 1 "День захисників і захисниць України (Ukraine)")
(holiday-fixed 12 25 "Різдво Христове (Ukraine)"))
"Ukrainian public holidays.")
(defvar my-canadian-holidays
'((holiday-fixed 1 1 "New Year's Day (Canada)")
(holiday-fixed 7 1 "Canada Day (Canada)")
(holiday-float 9 1 1 "Labour Day (Canada)")
(holiday-float 10 1 2 "Thanksgiving Day (Canada)")
(holiday-fixed 12 25 "Christmas (Canada)")
(holiday-fixed 12 26 "Boxing Day (Canada)"))
"Canadian public holidays.")
(defvar my-us-holidays
'((holiday-fixed 1 1 "New Year's Day (US)")
(holiday-float 1 1 3 "Martin Luther King Jr. Day (US)")
(holiday-float 2 1 3 "Presidents' Day (US)")
(holiday-fixed 7 4 "Independence Day (US)")
(holiday-float 11 4 4 "Thanksgiving (US)")
(holiday-fixed 12 25 "Christmas (US)"))
"US public holidays.")
;; Define local holidays to be tracked.
(setq holiday-local-holidays
'((holiday-fixed 10 24 "Programmers' Day")
(holiday-fixed 3 8 "Women's Day")
(holiday-fixed 6 1 "Children's Day")
(holiday-fixed 9 10 "Teachers' Day")
(holiday-fixed 3 12 "Arbor Day")))
;; Define other holidays to be tracked.
(setq-default holiday-other-holidays
'((holiday-fixed 4 23 "World Book Day")
(holiday-fixed 2 14 "Valentine's Day")
(holiday-fixed 4 1 "April Fools' Day")
(holiday-fixed 10 31 "Halloween")
(holiday-sexp '(if (or (zerop (% year 400))
(and (% year 100) (zerop (% year 4))))
(list 9 12 year)
(list 9 13 year))
"World Programmers' Day")))
;; Customize `calendar-holidays' to include public holidays from various
;; countries. I work in a multinational company with teams based in different
;; regions, so it's useful to know when my colleagues have days off.
(setq-default calendar-holidays
`(,@my-polish-holidays
,@my-ukrainian-holidays
,@my-canadian-holidays
,@my-us-holidays
,@holiday-local-holidays
,@holiday-other-holidays))
;; Week starts on Monday.
(setq-default calendar-week-start-day 1)
;; I prefer read dates in 'year/month/day' format.
(setq-default calendar-date-style 'iso)
;; Prefer +0800 over CST.
(setq-default calendar-time-zone-style 'numeric)
;; Mark dates of holidays in the calendar window.
(setq-default calendar-mark-holidays-flag t)
;; Mark dates with diary entries, in the calendar window.
(setq-default calendar-mark-diary-entries-flag t)
;; Set the default latitude and longitude for calendar calculations. These
;; values are used to determine local sunrise/sunset times, moon phases, and
;; other location-dependent calendar features in Emacs.
(setq-default calendar-latitude 51.1)
(setq-default calendar-longitude 17.0)
;; Alist of time zones and places for `world-clock' to display for the same
;; reason as for `calendar-holidays' above.
(setq-default world-clock-list '(("Canada/Pacific" "Vancouver")
("America/New_York" "New York")
("Europe/Warsaw" "Warsaw")
("Europe/Kyiv" "Kyiv")))
;;;; Organization
(require 'org)
(with-eval-after-load 'org
;; Ensure the directory for Org files is exist.
(my-ensure-directory-exists org-directory)
;; Although I don't use `diary-file', Org-agenda still checks for its
;; existence even when `org-agenda-include-diary' is set to nil. This happens
;; due to internal checks tied to `org-agenda-diary-file'. Since I handle
;; recurring tasks differently within my Org files and don't need an
;; additional diary, I don't want to set `org-agenda-diary-file' to anything
;; meaningful. As a simple workaround, I just create an empty `diary-file' to
;; bypass these checks and keep Org-agenda running smoothly.
(unless (file-exists-p diary-file)
(make-empty-file diary-file)))
;; Associate .org, .org_archive and .txt files with `org-mode'.
(add-to-list 'auto-mode-alist
'("\\.\\(org\\|org_archive\\|txt\\)\\'" . org-mode))
;; When opening an Org file, start with all top-level headers collapsed.
(setq org-startup-folded t)
;; Automatically log the timestamp when a TODO is marked as DONE.
(setq org-log-done 'time)
;; Store notes and state changes in a drawer instead of cluttering the entry.
(setq org-log-into-drawer t)
;; Hide emphasis markers (e.g., bold, italics) to see styled text only.
(setq org-hide-emphasis-markers t)
;; Set the default width for inline images to 600 pixels.
(setq org-image-actual-width '(600))
;; Enforce TODO dependencies, blocking parent tasks from being marked DONE
;; if child tasks are still not completed.
(setq org-enforce-todo-dependencies t)
;; Modify only the agenda context in `org-fold-show-context-detail' without
;; altering the other default values.
(setq org-fold-show-context-detail
(cons '(agenda . lineage)
(assq-delete-all 'agenda org-fold-show-context-detail)))
;; Allow setting single tags without bringing up the tag selection menu.
(setq org-fast-tag-selection-single-key t)
;; Configure the languages supported in org-babel code blocks.
(org-babel-do-load-languages
'org-babel-load-languages
'((C . t)
(emacs-lisp . t)
(haskell . t)
(js . t)
(latex . t)
(lisp . t)
(makefile . t)
(org . t)
(python . t)
(scheme . t)
(shell . t)
(sql . t)
(calc . t)))
(defun my|org-setup-environment ()
"Set up a tailored environment for editing Org-mode buffers.
This function customizes the appearance and behavior of `org-mode' by
enabling modes and features that enhance the editing experience:
- Enables `visual-line-mode' for soft line wrapping, providing a more
natural reading and writing flow for long lines of text.
- Activates `org-indent-mode' to visually align text according to the
structure of the outline, improving readability.
- Displays inline images directly within the buffer when they are linked
in Org files, providing immediate visual feedback."
(visual-line-mode 1)
(org-indent-mode 1)
(org-display-inline-images 1))
;; Attach the environment setup to Org-mode.
(add-hook 'org-mode-hook #'my|org-setup-environment)
(defun my/switch-to-org ()
"Get a scratch buffer for the `org-mode'."
(interactive)
(let* ((name "*scratch-org*")
(buf (get-buffer name)))
(pop-to-buffer
(if (bufferp buf)
buf ; Existing scratch buffer
;; New scratch buffer
(with-current-buffer (get-buffer-create name)
(org-mode)
(goto-char (point-min))
;; Initial documentation displayed in *scratch-org* buffer.
(insert "# This buffer is for notes and Org ")
(insert "structure editing that are not saved.\n")
(insert "# To create a file, visit it with ")
(insert (format "%s and enter text in its buffer.\n\n"
(substitute-command-keys "\\[find-file]")))
(current-buffer))))))
(define-key my-keyboard-map (kbd "o") #'my/switch-to-org)
;; Standard key bindings
(global-set-key (kbd "C-c l") #'org-store-link)
(global-set-key (kbd "C-c b") #'org-switchb)
;;;;; Helpers
(defun my-org-get-created-date ()
"Retrieve the CREATED property if it exists, otherwise return nil.
This function utilizes Org-mode's built-in date parsing
capabilities by using `org-parse-time-string' to handle various
date formats. If no valid date is found, it returns nil."
(let* ((created (org-entry-get nil "CREATED" t))
(parsed-date (and created (org-parse-time-string created))))
(when (and parsed-date
;; Ensure that year, month, and day are all present
(nth 4 parsed-date)
(nth 5 parsed-date)
(nth 3 parsed-date))
(format "%04d-%02d-%02d"
(nth 5 parsed-date) ; Year
(nth 4 parsed-date) ; Month
(nth 3 parsed-date)))))
(defun my-org-sanitize-heading-for-id (heading)
"Sanitize the HEADING text to create a slug suitable for use as an ID.
Removes progress indicators, priority markers, links, timestamps,
non-alphanumeric characters and replaces spaces with hyphens."
(let ((slug (substring-no-properties heading)))
;; Replacements for common symbols
(setq slug (replace-regexp-in-string "&" "and" slug))
(setq slug (replace-regexp-in-string "\\." "dot" slug))
(setq slug (replace-regexp-in-string "\\+" "plus" slug))
;; Remove progress indicators like "[25%]" or "[2/7]"
(setq slug (replace-regexp-in-string "\\(\\[[0-9]+%\\]\\)" "" slug))
(setq slug (replace-regexp-in-string "\\(\\[[0-9]+/[0-9]+\\]\\)" "" slug))
;; Remove priority indicators like "[#A]"
(setq slug (replace-regexp-in-string "\\(\\[#[ABC]\\]\\)" "" slug))
;; Remove links but keep their descriptions
(setq slug (replace-regexp-in-string "\\[\\[\\(.+?\\)\\]\\[" "" slug t))
;; Remove timestamps (active and inactive)
(setq slug (replace-regexp-in-string
"<[12][0-9]\\{3\\}-[0-9]\\{2\\}-[0-9]\\{2\\}\\( .*?\\)?>"
"" slug t))
(setq slug (replace-regexp-in-string
"\\[[12][0-9]\\{3\\}-[0-9]\\{2\\}-[0-9]\\{2\\}\\( .*?\\)\\]"
"" slug t))
;; Replace spaces with hyphens and remove non-alphanumeric characters
(setq slug (replace-regexp-in-string "[^[:alnum:][:space:]-]" "" slug))
(setq slug (replace-regexp-in-string " +" "-" slug))
;; Remove trailing hyphens, downcase and trim length to 60 chars
(string-limit (downcase (replace-regexp-in-string "-+$" "" slug)) 60)))
(defun my-org-find-property (property)
"Find the position of the first occurrence of PROPERTY's value.
Return the position of the property's value, or nil if not found.
If narrowing is in effect, only search the visible part of the
buffer."
(save-excursion
(goto-char (point-min))
(let ((case-fold-search t)
(re (org-re-property property nil t nil)))
(catch 'exit
(while (re-search-forward re nil t)
(when (org-entry-get (point) property nil t)
(throw 'exit (match-beginning 3))))))))
(defun my/org-goto-id-property ()
"Move cursor to the start of the ID property value in Org heading."
(interactive)
(let ((drawer-pos nil)
(id-pos nil))
(save-excursion
(org-back-to-heading t)
(let ((case-fold-search t)
(start (point)))
(outline-next-visible-heading 1)
(save-restriction
(narrow-to-region start (point))
(setq id-pos (my-org-find-property "ID"))
(when id-pos
(goto-char id-pos)
(setq drawer-pos
(re-search-backward "^\\s-*:PROPERTIES:" nil t))))))
(when (and id-pos drawer-pos)
(org-show-entry)
(goto-char drawer-pos)
(org-flag-drawer nil)
(goto-char id-pos))))
(define-key my-keyboard-map (kbd "M-i") #'my/org-goto-id-property)
(defun my/org-generate-id ()
"Create a human-readable ID for the current entry and return it.
If the entry already has an ID, just return it. The function
generates a new ID by performing the following steps:
1. Retrieves the heading text of the current Org heading.
2. Sanitizes the heading text to form a slug suitable for an ID.
The sanitization process removes or replaces special
characters to create a clean, URL-friendly string.
3. Prepends the slug with a date prefix. The date is derived
from the CREATED property if it exists; otherwise, today's
date is used in the format YYYY-MM-DD.
4. Sets the generated ID as the ID property of the current
heading.
5. Updates the Org database of ID locations with the new ID and
the file location to ensure the ID can be tracked and
retrieved in the future.
The function returns the generated ID, or if an existing ID is
found, it returns the existing ID."
(interactive)
(unless (derived-mode-p 'org-mode)
(user-error "This function is intended to be used in Org-mode only"))
(org-with-point-at nil ; with nil refer to the entry at point
(let ((id (org-id-get)))
(cond
;; Check if the ID property already exists
((and id (stringp id) (string-match "\\S-" id))
id)
;; If not - retrieve the heading text and create a new ID
(t
(let* ((heading (nth 4 (org-heading-components)))
(clean-heading (my-org-sanitize-heading-for-id heading))
;; Use CREATED property if available, otherwise today's date
(date-prefix (or (my-org-get-created-date)
(format-time-string "%Y-%m-%d")))
(id (concat date-prefix "-" clean-heading)))
;; Set the ID property
(org-set-property "ID" id)
;; Add the ID with location FILE to the database of ID locations.
(org-id-add-location id (or org-id-overriding-file-name
(buffer-file-name (buffer-base-buffer))))
id))))))
(defun my/org-id-advice (&rest args)
"The advice to update Org ID locations.
This function accepts ARGS but does not use them directly.
It generates an Org ID if needed and updates the ID locations."
(my/org-generate-id)
(org-id-update-id-locations)
args)
(advice-add 'org-store-link :before #'my/org-id-advice)
(define-key my-keyboard-map (kbd "I") #'my/org-generate-id)
(defun my/org-mark-as-project ()
"Mark the current Org heading as a project.
This function ensures that the current heading:
1. Has the tag project
2. Has the property COOKIE_DATA set to todo recursive
3. Has a TODO keyword
4. Starts with a progress indicator [/]
This setup helps in organizing projects within Org Mode
and ensures that projects are easily identifiable and managed.
I find this approach particularly appealing, and I first learned
about it from an article by Karl Voit. The original function was
created by Karl, and this version is simply a refined and
optimized adaptation tailored to my specific needs. For origin
see: https://karl-voit.at/2019/11/03/org-projects/"
(interactive)
;; Try to move to a heading if not already there
(unless (org-at-heading-p)
(org-back-to-heading t)
(unless (org-at-heading-p)
(user-error
"No Org heading found. Please place the cursor at or near a heading")))
;; Ensure the :project: tag is added
(org-toggle-tag "project" 'on)
;; Set the COOKIE_DATA property to 'todo recursive'