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init.el
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;;; MyEmacsConfig --- a minimal cross platform config
;;
;; -*- lexical-binding: t -*-
;;
;;; Commentary:
;; It is meant to provide a decent working environment
;; that's fairly easy to manage.
;; In general, I try to use as many of the builtin features available
;; and tend to only use external package when it's much more convenient.
;;; Code:
;; *****************************************
;;; * Local (system specific) configuration *
;; *****************************************
(defmacro setq-if-defined (var val &optional arg)
"Set VAR to VAL if it is defined else warn if ARG else raise an error."
(if (boundp var)
(list 'setq var val)
(let ((warn-msg "Variable %s is not defined"))
(if arg
(warn warn-msg var)
(error warn-msg var)))))
(defmacro setq-if-not-defined (var val)
"Set VAR to VAL if it is not defined."
(when (boundp var)
(list 'setq var val)))
(defvar local/home-dir "~" "Home directory.")
(defvar wakatime-cli-path-rel nil "Relative path to wakatime-cli executable.")
(let ((local-conf (concat user-emacs-directory "local.el")))
(when (file-exists-p local-conf)
(load local-conf)))
;; Function for allowing per system home-directory
(defun in-home-dir (file)
"Return the path of a FILE in the home directory as an absolute path."
(concat (file-name-as-directory local/home-dir) file))
;; **********
;;; * Server *
;; **********
(require 'server)
(defvar init-script-initial-clients nil
"Connected clients when init script was run.")
(setq init-script-initial-clients server-clients)
(unless init-script-initial-clients
(progn
(server-force-delete)
(server-start)))
;; **********************
;;; * Package Management *
;; **********************
;; Ensure that Emacs can verify SSL/TLS certificates
(setq gnutls-algorithm-priority "NORMAL:-VERS-TLS1.3")
;; Package archives
(require 'package)
(package-initialize)
(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
;; use-package
(unless (package-installed-p 'use-package)
(package-refresh-contents)
(package-install 'use-package))
(require 'use-package)
(eval-and-compile
(setq use-package-always-ensure t
use-package-expand-minimally t))
;; Natively compile packages immediately after installation
(setq package-native-compile t)
;; File modes ;;
;; No config needed - just needed for the file types.
(use-package csv-mode)
(use-package yaml-mode)
(use-package toml-mode)
(use-package json-mode)
(use-package markdown-mode)
;; ********************
;;; * Usage Statistics *
;; ********************
;; Set a high value of 1 GB to prevent frequent garbage collections
;; during initialization.
(setq gc-cons-threshold #x40000000) ; default threshold is 800 KB
;; Prevent longer GC pauses and experience less mini-interruptions.
;; When idle for 15 sec, run the GC no matter what.
;; This hack was stolen from <https://akrl.sdf.org/>
(defmacro my-time (&rest body)
"Measure and return the time it takes evaluating BODY."
`(let ((time (current-time)))
,@body
(float-time (time-since time))))
(defvar my-gc-timer nil
"Timer object for garbage collection monitoring.
The timer can be canceled with `my-cancel-gc-timer'.")
(defun my-start-gc-timer ()
"Start the garbage collection timer."
(interactive)
(setq my-gc-timer
(run-with-idle-timer 15 t
(lambda ()
(my-time (garbage-collect))))))
(defun my-cancel-gc-timer ()
"Cancel the garbage collection timer."
(interactive)
(when (timerp my-gc-timer)
(cancel-timer my-gc-timer)
(setq my-gc-timer nil)))
;; Start the GC Timer
(my-start-gc-timer)
;; Show a message when garbage collection happens? Useful while tuning the GC
(setq garbage-collection-messages nil)
;; Diagnostics
(add-hook 'emacs-startup-hook
(lambda ()
(message "Emacs started in %s with %d garbage collections."
(format "%.3f seconds"
(float-time
(time-subtract after-init-time before-init-time)))
gcs-done)))
;; WakaTime
;; Requires wakatime-cli (https://wakatime.com/emacs)
;; The wakatime login file sets the wakatime-api-key variable to the api key.
;; wakatime-cli must be specified in the users' path.
(let ((waka-login-file (concat user-emacs-directory ".waka.el")))
(if (file-exists-p waka-login-file)
(use-package wakatime-mode
:init
(setq wakatime-cli-path (in-home-dir wakatime-cli-path-rel))
(load waka-login-file)
:config
(global-wakatime-mode))
(message
(concat "WakaTime not loaded as credentials not found in "
waka-login-file))))
;; VC Mode ;;
;; More often than not I find myself returning to the built in features of Emacs
;; The most controversial is perhaps with using vc over magit.
;; I find Magit hangs more than vc-dir-mode and often fails more - with errors
;; such as waiting for Emacs to close the commit editor.
;; I also feel that Emacs' vc encourages me to make small commits on the file
;; regularly without getting in my way.
;; I digress, C-o is used to globally to switch active windows so I unbind that
;; here.
(with-eval-after-load "vc-mode"
(define-key vc-dir-mode-map (kbd "C-o") nil))
;; Magit ;;
(use-package magit
:commands (magit-status magit-get-current-branch)
:custom
(magit-display-buffer-function
#'magit-display-buffer-same-window-except-diff-v1))
(setenv "GIT_ASKPASS" "git-gui--askpass")
(global-set-key (kbd "C-c g g") #'magit)
;; Forge ;;
(use-package forge
:after magit)
;; Git Time Machine ;;
(use-package git-timemachine)
(setq git-timemachine-abbreviation-length 6)
(global-set-key (kbd "C-c g t") #'git-timemachine)
;; File modes ;;
;; No config needed - just needed for the file types.
(use-package csv-mode)
(use-package yaml-mode)
(use-package toml-mode)
(use-package json-mode)
(use-package markdown-mode)
;; **********
;;; * System *
;; **********
;; Prevent stale elisp bytecode from shadowing more up-to-date source files
(setq load-prefer-newer t)
;; Increase warning threshold
(setq large-file-warning-threshold (* 64 1000000))
;; Set undo limit to 64 MB
(setq undo-outer-limit (* 64 1000000))
(global-set-key (kbd "M-r") #'undo-redo)
(global-set-key (kbd "M-u") #'undo-only)
;; Increase the amount of data which Emacs reads from subprocesses
(setq read-process-output-max (* 1024 1024)) ; 1 MB
;; Sets the default directory
(setq default-directory (in-home-dir nil))
;; Info
(defvar info-custom-dir (in-home-dir ".emacs.d/info/")
"Location of custom info directory.")
(add-to-list 'Info-directory-list info-custom-dir)
(when (eq system-type 'windows-nt)
(add-to-list 'Info-directory-list
(in-home-dir "scoop/apps/emacs/current/share/info")))
(defun info-custom-manuals (manual)
"Load an info MANUAL from the custom info directory."
(info (concat info-custom-dir manual ".info")))
(defun info-custom-python ()
"Launch python info file."
(interactive)
(info-custom-manuals "python"))
(global-set-key (kbd "C-c h p") #'info-custom-python)
;; Sets the auth source (requires gpg!)
;; loopback is needed if GPG requires a password for decrypting keys
(setq auth-sources `(,(in-home-dir ".authinfo.gpg"))
epa-gpg-program "gpg"
epa-pinentry-mode 'loopback)
;; Saves session
;; Works with daemons but not remotely running Emacs sessions.
(desktop-save-mode 1)
(add-hook 'server-after-make-frame-hook #'desktop-read)
(setq desktop-load-locked-desktop 'check-pid)
;; ******
;;; * UI *
;; ******
;; Help
(setq help-at-pt-timer-delay 0
help-at-pt-display-when-idle "always")
;; Tooltips
(setq tooltip-delay 0
tooltip-short-delay 0
use-system-tooltips nil)
;; Fireplace - a mission critical package;;
(use-package fireplace)
;; Which-Key ;;
(use-package which-key
:init (which-key-mode)
:diminish which-key-mode
:config
(setq which-key-idle-delay 0.1))
;; Frame
(add-to-list 'default-frame-alist '(fullscreen . maximized))
(setq frame-title-format "The Holy Editor of Saint IGNUcius")
;; Basic
(setq inhibit-startup-message t
visible-bell t
confirm-kill-emacs 'yes-or-no-p
global-tab-line-mode t
truncate-lines t
x-stretch-cursor t
use-dialog-box nil)
(scroll-bar-mode -1) ; Disable visible scrollbar
(tool-bar-mode -1) ; Disable the toolbar
(tooltip-mode -1) ; Disable tooltips
(set-fringe-mode 0) ; Removes fringes
(menu-bar-mode -1) ; Disable the menu bar
(global-visual-line-mode t) ; Enables visual lines
(blink-cursor-mode t) ; Blinks the cursor
(global-hl-line-mode t) ; Hightlights current line
;; Modeline
(setq mode-line-compact t ; Compresses repeating spaces to a single space
display-time-24hr-format t
display-battery-mode t)
(setq-default header-line-format nil)
(display-time-mode 1) ; Displays the time.
(display-battery-mode 1) ; Displays the battery.
(size-indication-mode 1) ; Show the buffer size in the modeline
(column-number-mode 1) ; Show column number with line number in modeline
;; Tabs
(setq tab-bar-position t
tab-bar-show 1
tab-bar-close-button-show nil
tab-bar-format '(tab-bar-format-history
tab-bar-format-tabs
tab-bar-separator)
tab-bar-new-tab-choice #'scratch-buffer
tab-bar-new-tab-to 'rightmost)
;; Programming UI
(add-hook 'prog-mode-hook #'whitespace-mode)
(setq display-raw-bytes-as-hex t)
;; Line numbers
(column-number-mode)
(setq display-line-numbers-type 'relative)
(setq-default display-line-numbers-width 4) ;; # lines > 9999 => rethink life.
(global-display-line-numbers-mode t)
;; Use spaces not tabs - this is the hill I will die on.
(setq-default c-basic-offset 4
tab-width 4
indent-tabs-mode nil
tab-always-indent t)
;; Electric indents reidents text lines on-the-fly.
;; I do not like this.
(electric-indent-mode 0)
;; Theme
(defvar me/dark-theme 'modus-vivendi "Default dark theme.")
(defvar me/light-theme 'modus-operandi "Default light theme.")
(defvar me/current-theme me/dark-theme "Current theme.")
(defun me/load-theme ()
"Load the appropriate theme based on the current theme."
(load-theme me/current-theme t))
(defun toggle-theme ()
"Toggle the theme between dark and light."
(interactive)
(if (eq me/current-theme me/dark-theme)
(setq me/current-theme me/light-theme)
(setq me/current-theme me/dark-theme))
(me/load-theme))
(me/load-theme)
;; As a quick and convenient test, this line happens to be 79 characters long.
(add-to-list 'default-frame-alist '(font . "Monospace 13"))
(add-to-list 'default-frame-alist '(width . 79))
;; Highlighting changes
(setq highlight-changes-mode t)
(global-set-key (kbd "C-c c c") #'highlight-changes-mode)
(global-set-key (kbd "C-c c h") #'highlight-changes-remove-highlight)
(global-set-key (kbd "C-c c v") #'highlight-changes-visible-mode)
(global-set-key (kbd "C-c c n") #'highlight-changes-next-change)
(global-set-key (kbd "C-c c p") #'highlight-changes-previous-change)
(global-set-key (kbd "C-c c r") #'highlight-changes-rotate-faces)
(global-set-key (kbd "C-c c f") #'highlight-compare-with-file)
(global-set-key (kbd "C-c c b") #'highlight-compare-buffers)
;; *****************
;;; * Basic Editing *
;; *****************
(delete-selection-mode 1) ;; Replace highlighted text rather than just inserted.
(save-place-mode 1)
(setq save-interprogram-paste-before-kill t)
(setq yank-pop-change-selection t)
(global-set-key (kbd "C-x j") #'join-line)
(global-set-key (kbd "C-c r") #'replace-string)
(global-set-key (kbd "C-c q") #'query-replace)
(global-set-key (kbd "C-/") #'undo)
;; In general, I prefer to go forward to the beginning of a word
;; not the end, but I've provided a shortcut for both a bound
;; forward to the beginning of the word to M-f
(global-set-key (kbd "C-M-f") #'forward-word)
(global-set-key (kbd "M-f") #'forward-to-word)
;; Handy for scrolling through buffers.
;; <SPC> :: scroll forward one windowful.
;; S-<SPC> :: scroll backward one windowful.
;; s :: start incremental search.
;; q :: Quit and go back to buffer & position before view-mode.
;; e :: Quit and stay in the same buffer & position.
(global-set-key (kbd "C-c v") #'view-mode)
;; Format whitespace visualisation
(setq whitespace-style '(face tabs spaces trailing lines space-before-tab
newline indentation empty space-after-tab
space-mark tab-mark missing-newline-at-eof))
;; Count the words
(global-set-key (kbd "C-c b c") #'count-words)
;; Revert the buffer
(global-set-key (kbd "C-c b r") #'revert-buffer)
;; Copy the current buffer's filename to the kill ring.
(defun copy-filename-to-kill ()
"Copy the current buffer's filename to the kill ring."
(interactive)
(let ((file-name (buffer-file-name)))
(if (stringp file-name)
(kill-new (buffer-file-name))
(message "Current buffer is not a file."))))
(global-set-key (kbd "C-c f w") #'copy-filename-to-kill)
;; ********************
;;; * Advanced Editing *
;; ********************
;; Completion
(require 'icomplete)
(setq icomplete-mode t
icomplete-in-buffer t
icomplete-compute-delay 0.01
icomplete-delay-completions-threshold 10000
icomplete-show-matches-on-no-input t
icomplete-hide-common-prefix nil
read-buffer-completion-ignore-case t
completion-ignore-case t
completion-auto-help nil
completion-styles '(basic partial-completion initials substring))
;; Used to use fido-vertical but that has difficulty when not selecting an item
;; from the completion list. That is, when rather than selecting "fo" if "foo"
;; is present "foo" will always be selected.
;; Hence I switched to icomplete.
;; Similarly, flex is too aggressive a completion match so I've removed that.
;; The vertical completion takes up more screen real estate so I ignored that.
;; For some reason icomplete doesn't always load after initialisation
(icomplete-mode)
;; Use the default `completion--in-region' function.
(setq completion-in-region-function
(lambda (&rest args)
(apply #'completion--in-region args)))
;; Enables advanced editing modes
(put 'set-goal-column 'disabled nil) ;; Enables setting a goal column
(put 'narrow-to-region 'disabled nil) ;; Enables narrowing
(put 'upcase-region 'disabled nil) ;; Enables up case a regoin
(put 'downcase-region 'disabled nil) ;; Enables down case a regoin
;; Multiple cursors ;;
(use-package multiple-cursors
:config
(global-set-key (kbd "C->") #'mc/mark-next-like-this)
(global-set-key (kbd "C-<") #'mc/mark-previous-like-this)
(global-set-key (kbd "C-x M-.") #'mark-pop)
(global-set-key (kbd "C-x C-.") #'mc/edit-lines)
(define-key mc/keymap (kbd "<return>") nil))
;; Expand region
(use-package expand-region
:bind ("C-=" . er/expand-region))
;; iSpell ;;
(global-set-key (kbd "C-c d s") #'ispell)
(global-set-key (kbd "C-c d w") #'ispell-word)
(global-set-key (kbd "C-c d c") #'ispell-comments-and-strings)
(global-set-key (kbd "C-c d b") #'ispell-buffer)
(add-hook 'text-mode-hook #'flyspell-mode)
(add-hook 'prog-mode-hook #'flyspell-prog-mode)
;; Multi-file operations
(global-set-key (kbd "C-c f c") #'fileloop-continue)
;; *************************
;;; * Programming Languages *
;; *************************
;;;; The Grand Unified Debugger
(global-set-key (kbd "C-x C-a i") #'gud-goto-info)
(global-set-key (kbd "C-x C-a t") #'gud-tooltip-mode)
;;;; Python
(defun python-imenu-use-flat-index
()
"Use flat indexing for imenu."
(setq imenu-create-index-function
#'python-imenu-create-flat-index))
(add-hook 'python-mode-hook
#'python-imenu-use-flat-index)
(global-set-key (kbd "C-c g d") #'pdb)
(setq gud-pdb-command-name "poetry run python -m pdb")
(setq python-shell-interpreter "ipython")
;;;; Perl
(add-to-list 'major-mode-remap-alist '(perl-mode . cperl-mode))
(setq cperl-invalid-face nil)
(setq cperl-electric-keywords t) ;; expands for keywords such as
;; foreach, while, etc...
;; Electric parentheses
(setq cperl-electric-parens t)
;; Help on idle after 1s
(setq cperl-lazy-help-time 1)
;;;; Latex
(setq tectonic-compile-command "tectonic -X compile -f plain %T"
tectonic-watch-command "tectonic -X watch")
(if (eq system-type 'windows-nt)
(setq tectonic-compile-command "tectonic -X compile -f plain %T"
tectonic-watch-command "tectonic -X watch")
(setq tectonic-compile-command
"nix-shell --command \"tectonic -X compile -f plain %T\""
tectonic-watch-command
"nix-shell --command \"tectonic -X watch\""))
(global-prettify-symbols-mode)
(use-package tex
;; In general I prefer the AUCTeX modes over their builtin counter parts
;; That is, LaTeX-mode over latex-mode etc.
:ensure auctex
:config
(add-hook 'LaTeX-mode-hook #'TeX-fold-mode)
(add-hook 'LaTeX-mode-hook
(lambda ()
(setq flymake-compiler "pdflatex")
(setq flymake-args '("-interaction=nonstopmode" "%f"))))
(add-to-list 'auto-mode-alist '("\\.TeX$" . LaTeX-mode))
(setq TeX-auto-save t
TeX-parse-self t
TeX-electric-sub-and-superscript t
TeX-master nil
;; Disable variable font for sections
font-latex-fontify-sectioning 'color
;; The below variables set-up AucTeX to use tectonic
TeX-engine-alist `((default
"Tectonic"
,tectonic-compile-command
,tectonic-watch-command
nil))
LaTeX-command-style '(("" "%(latex)"))
TeX-check-TeX nil
TeX-process-asynchronous t
TeX-engine 'default))
;; TeX-command-list needs to be modified not pass extra metadata and options
(let ((tex-list (assoc "TeX" TeX-command-list))
(latex-list (assoc "LaTeX" TeX-command-list)))
(setf (cadr tex-list) "%(tex)"
(cadr latex-list) "%l"))
;; Live PDF preview in tectonic projects
(add-hook 'after-change-major-mode-hook
(lambda ()
(when-let ((project (project-current))
(proot (project-root project)))
(when (file-exists-p (expand-file-name "Tectonic.toml" proot))
(setq-local TeX-output-dir (expand-file-name "build/index" proot))))))
(setq org-latex-listings 'minted
org-latex-packages-alist '(("newfloat" "minted"))
org-latex-pdf-process
'("pdflatex -shell-escape -interaction nonstopmode -output-directory %o %f"
"pdflatex -shell-escape -interaction nonstopmode -output-directory %o %f")
)
;; Useful (AUC)TeX commands
;;
;; C-c C-s :: Insert section.
;; C-c C-e :: Insert environment.
;; C-c C-m :: Insert macro.
;; C-c C-a :: Compile all.
;; C-c C-c :: Compile.
;; C-c C-b :: Compile buffer.
;; C-c C-z :: Compile section.
;; C-c C-r :: Compile region.
;; C-c C-f C-b :: Bold.
;; C-c C-f C-i :: Italics.
;; C-c C-f C-e :: Emphasized.
;; C-c C-o C-f :: Fold mode.
;; C-c ~ :: Math mode.
;; C-x * e :: calc-embedded.
;; C-c C-p C-d :: Preview document.
;; C-c C-p C-p :: Preview at point.
;; For viewing latex commands outside of org-mode buffers,
;; it's useful to bind to the org-latex-preview function globally.
(global-set-key (kbd "C-c C-x C-l") #'org-latex-preview)
;;;; Emacs Speaks Statistics
(use-package ess
:config (require 'ess-r-mode))
;; (well also Python but that's not important right now)
(setq ess-ask-for-ess-directory t) ;; I actually like this feature!
(setq ess-local-process-name "R")
(setq ess-eval-visibly-p 'nowait) ;; No waiting whilst ESS is evaluating
(define-key ess-r-mode-map (kbd "M-?") nil) ;; unbinds M-?
;; **************
;;; * Navigation *
;; **************
;; Outline
;; Mainly used text based files.
(with-eval-after-load "outline"
(define-key outline-minor-mode-map (kbd "C-c o")
(lookup-key outline-minor-mode-map (kbd "C-c @"))))
(add-hook 'text-mode-hook #'outline-minor-mode)
;; Hide-show
;; Mainly used programming based files.
(define-key hs-minor-mode-map (kbd "C-c o")
(lookup-key hs-minor-mode-map (kbd "C-c @")))
(setq hs-isearch-open t) ;; Unhides comments and code when using isearch
(add-hook 'prog-mode-hook #'hs-minor-mode)
;; Semantic mode
;; Language aware editing commands for:
;; C, C++, HTML,Java, Javascript, Make, Python, Scheme, SRecode, and Texinfo
(require 'cedet)
(setq semantic-default-submodes
'(;; Perform semantic actions during idle time
global-semantic-idle-scheduler-mode
;; Use a database of parsed tags
global-semanticdb-minor-mode
;; Decorate buffers with additional semantic information
global-semantic-decoration-mode
;; Highlight the name of the function you're currently in
global-semantic-highlight-func-mode
;; show the name of the function at the top in a sticky
global-semantic-stickyfunc-mode
;; Generate a summary of the current tag when idle
global-semantic-idle-summary-mode
;; Show a breadcrumb of location during idle time
global-semantic-idle-breadcrumbs-mode
;; Switch to recently changed tags with `semantic-mrub-switch-tags',
;; or `C-x B'
global-semantic-mru-bookmark-mode))
(add-hook 'emacs-lisp-mode-hook #'semantic-mode)
(add-hook 'python-mode-hook #'semantic-mode)
(add-hook 'html-mode-hook #'semantic-mode)
;; Search
(setq isearch-repeat-on-direction-change t
isearch-wrap-pause 'no)
(global-set-key (kbd "C-s") #'isearch-forward)
(global-set-key (kbd "C-r") #'isearch-backward)
;; imenu
(defun me/imenu-function ()
"Function imenu."
(interactive)
(let ((unread-command-events (listify-key-sequence "Function\n") ))
(call-interactively 'imenu)))
(defun me/imenu-variable ()
"Variable imenu."
(interactive)
(let ((unread-command-events (listify-key-sequence "Variable\n") ))
(call-interactively 'imenu)))
(defun me/imenu-class ()
"Class imenu."
(interactive)
(let ((unread-command-events (listify-key-sequence "Class\n") ))
(call-interactively 'imenu)))
(defun me/imenu-method ()
"Method imenu."
(interactive)
(let ((unread-command-events (listify-key-sequence "Method\n") ))
(call-interactively 'imenu)))
(add-hook 'prog-mode-hook
(lambda () (local-set-key (kbd "M-g f") #'me/imenu-function)))
(add-hook 'prog-mode-hook
(lambda () (local-set-key (kbd "M-g v") #'me/imenu-variable)))
(add-hook 'prog-mode-hook
(lambda () (local-set-key (kbd "M-g c") #'me/imenu-class)))
(add-hook 'prog-mode-hook
(lambda () (local-set-key (kbd "M-g m") #'me/imenu-method)))
;; File navigation
(global-set-key (kbd "C-c f ,") 'find-file-other-window)
(global-set-key (kbd "C-c f v") 'view-file)
(recentf-mode 1)
(global-set-key (kbd "C-c f r") 'recentf-open-files)
;; Projects
(defun edit-projects ()
"Edit the list of projects."
(interactive)
(find-file project-list-file))
(global-set-key (kbd "C-x p a") #'edit-projects)
(global-set-key (kbd "C-x p s") 'project-search)
;; Buffers
(global-set-key (kbd "C-x C-b") #'ibuffer)
(global-set-key (kbd "C-c b k") #'kill-buffer-and-window)
(global-set-key (kbd "C-c b ,") #'switch-to-buffer-other-window)
(global-set-key (kbd "C-c b v") #'view-buffer-other-window)
(global-set-key (kbd "M-[") #'previous-buffer)
(global-set-key (kbd "M-]") #'next-buffer)
(global-set-key (kbd "C-c b a") #'append-to-buffer)
(defun kill-this-buffer-reliably ()
"Reliably kill this buffer."
(interactive) (kill-buffer (current-buffer)))
(global-set-key (kbd "C-x k") #'kill-this-buffer-reliably)
;; Scratch buffer
(defun note-buffer ()
"Create a scratch buffer for 'org-mode' notes."
(interactive)
(let* ((buffer-notes-name "*notes*")
(buffer-notes-scratch (get-buffer buffer-notes-name)))
(unless buffer-notes-scratch
(switch-to-buffer (get-buffer-create buffer-notes-name))
(org-mode)
(insert "#+title: Notes\n"))
(switch-to-buffer buffer-notes-name)))
(setq initial-major-mode #'emacs-lisp-mode)
(setq initial-scratch-message ";;; Scratch --- A Scratch Pad for Elisp Code\n")
(global-set-key (kbd "C-c b s") #'scratch-buffer)
(global-set-key (kbd "C-c b n") #'note-buffer)
(global-auto-revert-mode 1)
(setq midnight-mode t)
(midnight-delay-set 'midnight-delay "02:00am")
;; *********
;;; * Dired *
;; *********
;; Loads useful functions.
;; Came for dired-do-find-marked-files
;; Stayed for the file omition, virtual-dired buffers and dired-x-find-file
(with-eval-after-load 'dired
(setq dired-x-hands-off-my-keys nil)
(require 'dired-x)
(dired-x-bind-find-file)
(add-hook 'dired-mode-hook (lambda () (dired-omit-mode 1))))
(setq dired-listing-switches "-alh")
(setq dired-kill-when-opening-new-dired-buffer t)
(defun dired-sort-criteria (criteria)
"Sort-dired by different CRITERIA by Robert Gloeckner."
(interactive
(list
(or (completing-read "criteria [name]: "
'("size(S)" "extension(X)" "creation-time(ct)"
"access-time(ut)" "time(t)" "name()"))
"")))
(string-match ".*(\\(.*\\))" criteria)
(dired-sort-other
(concat dired-listing-switches
(match-string 1 criteria))))
(setq global-auto-revert-non-file-buffers t)
(global-set-key (kbd "C-c d d") 'dired-default-directory-on-left)
(global-set-key (kbd "C-c d p") 'dired-at-point)
(global-set-key (kbd "C-c d f") 'find-dired)
(global-set-key (kbd "C-c d n") 'find-name-dired)
(global-set-key (kbd "C-c d e") 'wdired-change-to-wdired-mode)
(global-set-key (kbd "C-c d ,") 'dired-other-window)
;; ***************
;;; * Development *
;; ***************
;; Python
(require 'flymake)
(add-hook 'prog-mode-hook #'flymake-mode)
(setq flymake-start-on-flymake-mode t)
(setq python-flymake-command '("ruff" "check" "--output-format"
"concise" "--quiet"
"--exit-zero" "--select" "ALL"
"--ignore" "D407"
"--stdin-filename=stdin" "-"))
(define-key flymake-mode-map (kbd "M-n") 'flymake-goto-next-error)
(define-key flymake-mode-map (kbd "M-p") 'flymake-goto-prev-error)
(define-key flymake-mode-map (kbd "C-c l b") 'flymake-show-buffer-diagnostics)
(define-key flymake-mode-map (kbd "C-c l p") 'flymake-show-project-diagnostics)
;; *********
;;; * Tools *
;; *********
;; Shell/Eshell
(require 'em-banner)
(setq eshell-banner-message "")
(require 'em-dirs)
(setq eshell-list-files-after-cd t)
(global-set-key (kbd "C-c e") #'eshell)
(global-set-key (kbd "C-c s") #'shell)
(global-set-key (kbd "C-x p C-s") #'project-shell)
;; Start an LLM-chat shell
(defvar lchat-model nil "Default model for the lchat shell.")
(setq-if-not-defined lchat-model "deepseek-ai/DeepSeek-R1-Distill-Qwen-32B")
(defun lchat ()
"Start an LLM chat shell.
This requires the python package lchat to be installed:
https://pypi.org/project/lchat/
The package is a simple chat interface using huggingfacehub
and works well with any shell - including eshell."
(interactive)
(let ((eshell-buffer-name "lchat"))
(if (get-buffer eshell-buffer-name)
(switch-to-buffer eshell-buffer-name)
(progn
(eshell)
(insert (format "lchat -m %s" lchat-model))
(eshell-send-input)))))
(global-set-key (kbd "C-c l l") #'lchat)
;; GPTel
(use-package gptel)
(setq gptel-model 'deepseek-r1:latest)
(setq gptel-backend (gptel-make-ollama
"Ollama"
:host "localhost:11434"
:stream t
:models`(,gptel-model)))
(setq gptel-directives
`((default
,(concat "I am in a conversation where I will ask you a series of"
" questions about any topic."
" Respond helpfully and with as much information as needed."))
(programming
,(concat "I am a programmer who will ask you a series of questions"
" related to coding and programming. I need clear explanations"
" and example code where applicable."
" I am using various programming languages including but"
" not limited to Python, R, Fortran, Emacs-lisp."
" Provide full function templates where applicable."))
(writing
,(concat "I am a writer who will ask you a series of questions related"
" to writing and language including grammar, style and"
" context. Provide helpful tips and feedback"
" where applicable."))
(chat
,(concat "I am in an informal conversation and will ask you a series"
" of questions. Respond in a friendly and diplomatic"
" manner."))))
(global-set-key (kbd "C-c l g") #'gptel)
(global-set-key (kbd "C-c l s") #'gptel-send)
(global-set-key (kbd "C-c l p") #'gptel-system-prompt)
(global-set-key (kbd "C-c l c") #'gptel-context-quit)
(global-set-key (kbd "C-c l a") #'gptel-abort)
;; Visit init file
(defun my-visit-user-init-file ()
"Visit the init file."
(interactive)
(find-file user-init-file))
(global-set-key (kbd "C-c f i") #'my-visit-user-init-file)
;; Calculator
(defun calc-or-quick-calc (arg)
"Run calc or quick calc if ARG."
(interactive "P")
(if arg
(call-interactively #'quick-calc)
(call-interactively #'calc)))
(global-set-key (kbd "C-x c") 'calc-or-quick-calc)
;; Farenheit to Celcius calculator
(defun farenheit-to-celcius (temp)
"Convert TEMP from Farenheit to Celcius."
(/ (- temp 32) 1.8))
(defun farenheit-to-celcius-at-point ()
"Get the Farenheit temperature at point as Celcius."
(interactive)
(let* ((temp-F (number-at-point))
(temp-C (farenheit-to-celcius temp-F))
(bounds (bounds-of-thing-at-point 'number)))
(when bounds
(message (format "%fF = %fC" temp-F temp-C))
(if buffer-read-only
(kill-new (format "%f" temp-C))
(progn
(delete-region (car bounds) (cdr bounds))
(insert (format "%f" temp-C)))))))
;; Doc view
(require 'doc-view)
(setq doc-view-resolution 200)
(add-hook 'doc-view-mode-hook (lambda () (display-line-numbers-mode -1)))
(add-hook 'doc-view-mode-hook #'doc-view-fit-page-to-window)
(defun doc-view-other-frame-scroll-up ()
"Same as switching to other frame, pressing SPC and then switching back."
(interactive)
(other-frame 1)
(doc-view-scroll-up-or-next-page)
(other-frame 1))
(defun doc-view-other-frame-scroll-down ()
"Same as switching to other frame, pressing p and then switching back."
(interactive)
(other-frame 1)
(doc-view-scroll-down-or-previous-page)
(other-frame 1))
(global-set-key (kbd "C-c p n") #'doc-view-other-frame-scroll-up)
(global-set-key (kbd "C-c p p") #'doc-view-other-frame-scroll-down)
;; Browser
(setq shr-width 70
shr-cookie-policy nil
eww-retrieve-command nil
eww-browse-url-new-window-is-tab nil
browse-url-browser-function #'eww)
(defun eww-search-wiki ()
"Search Wikipedia."
(interactive)
(let ((eww-search-prefix
"https://en.wikipedia.org/wiki/Special:Search?go=Go&search="))
(call-interactively #'eww)))
(defun eww-search-scholar ()
"Search Google Scholar."
(interactive)
(let ((eww-search-prefix "https://scholar.google.co.uk/scholar?q="))
(call-interactively #'eww)))
(defun eww-search-pypi ()
"Search PyPi."
(interactive)
(let ((eww-search-prefix "https://pypi.org/search/?q="))
(call-interactively #'eww)))
(global-set-key (kbd "C-c u w") #'eww-search-wiki)
(global-set-key (kbd "C-c u s") #'eww-search-scholar)
(global-set-key (kbd "C-c u p") #'eww-search-pypi)
(global-set-key (kbd "C-c u u") #'eww)
;; Newsticker (RSS)
(global-set-key (kbd "C-c m n") #'newsticker-show-news)
(setq newsticker-frontend #'newsticker-treeview
newsticker-hide-old-items-in-newsticker-buffer t)
(setq newsticker-url-list
'(("npj imaging" "https://www.nature.com/npjimaging.rss" nil 3600)
("npj ml" "https://www.nature.com/natmachintell.rss" nil 3600)
("arxiv medphys" "https://rss.arxiv.org/rss//physics.med-ph" nil 3600)
("mr in med" "https://onlinelibrary.wiley.com/action/showFeed?jc=15222594&type=etoc&feed=rss" nil 3600)))
;; IRC
(require 'erc)
(setq erc-autojoin-channels-alist
'(("Libera.Chat"
"#emacs"
"#python"
"#fortran"
"##forth"
"#nhs-dev"
"#math"
"#machinelearning")))
(setq erc-modules '(netsplit
fill
button
match
track
completion
readonly
networks
ring
autojoin
noncommands
irccontrols
move-to-prompt
stamp
menu
list
sasl))
(setq erc-nick "TactfulCitrus"