diff --git a/init.el b/init.el index 0dbd37b..e8646a1 100644 --- a/init.el +++ b/init.el @@ -1,1060 +1,12 @@ - -;; Meta - -;; Emacs can only load =.el=-files. We can use =C-c C-v t= to run -;; =org-babel-tangle=, which extracts the code blocks from the current file -;; into a source-specific file (in this case a =.el=-file). - -;; To avoid doing this each time a change is made we can add a function to -;; the =after-save-hook= ensuring to always tangle and byte-compile the -;; =org=-document after changes. - -(defun tangle-init () - "If the current buffer is 'init.org' the code-blocks are -tangled, and the tangled file is compiled." - (when (equal (buffer-file-name) - (expand-file-name (concat user-emacs-directory "init.org"))) - ;; Avoid running hooks when tangling. - (let ((prog-mode-hook nil)) - (org-babel-tangle) - (byte-compile-file (concat user-emacs-directory "init.el"))))) - -(add-hook 'after-save-hook 'tangle-init) - -;; I'd like to keep a few settings private, so we load a =private.el= if it -;; exists after the init-file has loaded. - -(add-hook - 'after-init-hook - (lambda () - (let ((private-file (concat user-emacs-directory "private.el"))) - (when (file-exists-p private-file) - (load-file private-file))))) - -;; Package - -;; Managing extensions for Emacs is simplified using =package= which is -;; built in to Emacs 24 and newer. To load downloaded packages we need to -;; initialize =package=. =cl= is a library that contains many functions from -;; Common Lisp, and comes in handy quite often, so we want to make sure it's -;; loaded, along with =package=, which is obviously needed. - -(require 'cl) -(require 'package) -(setq package-enable-at-startup nil) -(package-initialize) - -;; Packages can be fetched from different mirrors, [[http://melpa.milkbox.net/#/][melpa]] is the largest -;; archive and is well maintained. - -(setq package-archives - '(("gnu" . "http://elpa.gnu.org/packages/") - ("org" . "http://orgmode.org/elpa/") - ("MELPA" . "http://melpa.milkbox.net/packages/"))) - -;; We can define a predicate that tells us whether or not the newest version -;; of a package is installed. - -(defun newest-package-installed-p (package) - "Return true if the newest available PACKAGE is installed." - (when (package-installed-p package) - (let* ((get-desc (if (version< emacs-version "24.4") 'cdr 'cadr)) - (builtin-version (assq package package--builtin-versions)) - (local-pkg-desc (assq package package-alist)) - (newest-pkg-desc (assq package package-archive-contents))) - (cond ((and local-pkg-desc newest-pkg-desc) - (version-list-= (package-desc-version - (funcall get-desc local-pkg-desc)) - (package-desc-version - (funcall get-desc newest-pkg-desc)))) - ((and builtin-version newest-pkg-desc) - (version-list-= builtin-version - (package-desc-version - (funcall get-desc newest-pkg-desc)))))))) - -;; Let's write a function to install a package if it is not installed or -;; upgrades it if a new version has been released. Here our predicate comes -;; in handy. - -(defun upgrade-or-install-package (package) - "Unless the newest available version of PACKAGE is installed -PACKAGE is installed and the current version is deleted." - (unless (newest-package-installed-p package) - (let ((pkg-desc (assq package package-alist))) - (when pkg-desc - (if (version< emacs-version "24.4") - (package-delete (symbol-name package) - (package-version-join - (package-desc-vers (cdr pkg-desc)))) - (package-delete pkg-desc))) - (and (assq package package-archive-contents) - (package-install package))))) - -;; Also, we will need a function to find all dependencies from a given package. - -(defun dependencies (package) - "Returns a list of dependencies from a given PACKAGE." - (let* ((pkg-desc (assq package package-alist)) - (reqs (and pkg-desc (package-desc-reqs (cdr pkg-desc))))) - (mapcar 'car reqs))) - -;; The =package-refresh-contents= function downloads archive descriptions, -;; this is a major bottleneck in this configuration. To avoid this we can -;; try to only check for updates once every day or so. Here are three -;; variables. The first specifies how often we should check for updates. The -;; second specifies whether one should update during the initialization. The -;; third is a path to a file where a time-stamp is stored in order to check -;; when packages were updated last. - -(defvar days-between-updates 7) -(defvar do-package-update-on-init t) -(defvar package-last-update-file - (expand-file-name (concat user-emacs-directory ".package-last-update"))) - -;; The tricky part is figuring out when packages were last updated. Here is -;; a hacky way of doing it, using [[http://www.gnu.org/software/emacs/manual/html_node/emacs/Time-Stamps.html][time-stamps]]. By adding a time-stamp to the -;; a file, we can determine whether or not to do an update. After that we -;; must run the =time-stamp=-function to update the time-stamp. - -(require 'time-stamp) -;; Open the package-last-update-file -(with-temp-file package-last-update-file - (if (file-exists-p package-last-update-file) - (progn - ;; Insert it's original content's. - (insert-file-contents package-last-update-file) - (let ((start (re-search-forward time-stamp-start nil t)) - (end (re-search-forward time-stamp-end nil t))) - (when (and start end) - ;; Assuming we have found a time-stamp, we check determine if it's - ;; time to update. - (setq do-package-update-on-init - (<= days-between-updates - (days-between - (current-time-string) - (buffer-substring-no-properties start end)))) - ;; Remember to update the time-stamp. - (when do-package-update-on-init - (time-stamp))))) - ;; If no such file exists it is created with a time-stamp. - (insert "Time-stamp: <>") - (time-stamp))) - -;; Now we can use the function above to make sure packages are installed and -;; up to date. Here are some packages I find useful (some of these -;; configurations are also dependent on them). - -(when (and do-package-update-on-init - (y-or-n-p "Update all packages?")) - (package-refresh-contents) - (let* ((packages - '(ac-geiser ; Auto-complete backend for geiser - ac-slime ; An auto-complete source using slime completions - ace-jump-mode ; quick cursor location minor mode - auto-compile ; automatically compile Emacs Lisp libraries - auto-complete ; auto completion - centered-window ; Center the text when there's only one window - elscreen ; window session manager - expand-region ; Increase selected region by semantic units - flx-ido ; flx integration for ido - idle-require ; load elisp libraries while Emacs is idle - ido-vertical-mode ; Makes ido-mode display vertically. - geiser ; GNU Emacs and Scheme talk to each other - haskell-mode ; A Haskell editing mode - jedi ; Python auto-completion for Emacs - js2-mode ; Improved JavaScript editing mode - magit ; control Git from Emacs - markdown-mode ; Emacs Major mode for Markdown-formatted files. - matlab-mode ; MATLAB integration with Emacs. - monokai-theme ; A fruity color theme for Emacs. - move-text ; Move current line or region with M-up or M-down - multiple-cursors ; Multiple cursors for Emacs. - org ; Outline-based notes management and organizer - paredit ; minor mode for editing parentheses - powerline ; Rewrite of Powerline - pretty-lambdada ; the word `lambda' as the Greek letter. - slime ; Superior Lisp Interaction Mode for Emacs - smex ; M-x interface with Ido-style fuzzy matching. - undo-tree ; Treat undo history as a tree - try)) ; Try out Emacs packages. - ;; Fetch dependencies from all packages. - (reqs (mapcar 'dependencies packages)) - ;; Append these to the original list, and remove any duplicates. - (packages (delete-dups (apply 'append packages reqs)))) - - (dolist (package packages) - (upgrade-or-install-package package))) - - ;; This package is only relevant for Mac OS X. - (when (memq window-system '(mac ns)) - (upgrade-or-install-package 'exec-path-from-shell)) - (package-initialize)) - -;; Mac OS X - -;; I run this configuration mostly on Mac OS X, so we need a couple of -;; settings to make things work smoothly. In the package section -;; =exec-path-from-shell= is included (only if you're running OS X), this is -;; to include environment-variables from the shell. It makes useing Emacs -;; along with external processes a lot simpler. I also prefer using the -;; =Command=-key as the =Meta=-key. - -(when (memq window-system '(mac ns)) - (setq mac-option-modifier nil - mac-command-modifier 'meta - x-select-enable-clipboard t) - (exec-path-from-shell-initialize)) - -;; Require - -;; Some features are not loaded by default to minimize initialization time, -;; so they have to be required (or loaded, if you will). =require=-calls -;; tends to lead to the largest bottleneck's in a -;; configuration. =idle-require= delays the =require=-calls to a time where -;; Emacs is in idle. So this is great for stuff you eventually want to load, -;; but is not a high priority. - -(require 'idle-require) ; Need in order to use idle-require -(require 'auto-complete-config) ; a configuration for auto-complete-mode - -(dolist (feature - '(auto-compile ; auto-compile .el files - jedi ; auto-completion for python - matlab ; matlab-mode - ob-matlab ; org-babel matlab - ox-latex ; the latex-exporter (from org) - ox-md ; Markdown exporter (from org) - pretty-lambdada ; show 'lambda' as the greek letter. - recentf ; recently opened files - smex ; M-x interface Ido-style. - tex-mode)) ; TeX, LaTeX, and SliTeX mode commands - (idle-require feature)) - -(setq idle-require-idle-delay 5) -(idle-require-mode 1) - -;; Sane defaults - -;; These are what /I/ consider to be saner defaults. - -;; We can set variables to whatever value we'd like using =setq=. - -(setq default-input-method "TeX" ; Use TeX when toggling input method. - doc-view-continuous t ; At page edge goto next/previous. - echo-keystrokes 0.1 ; Show keystrokes asap. - inhibit-startup-message t ; No splash screen please. - initial-scratch-message nil ; Clean scratch buffer. - ring-bell-function 'ignore ; Quiet. - ;; Save undo history between sessions, if you have an undo-dir - undo-tree-auto-save-history - (file-exists-p - (concat user-emacs-directory "undo")) - undo-tree-history-directory-alist - ;; Put undo-history files in a directory, if it exists. - (let ((undo-dir (concat user-emacs-directory "undo"))) - (and (file-exists-p undo-dir) - (list (cons "." undo-dir))))) - -;; Some mac-bindings interfere with Emacs bindings. -(when (boundp 'mac-pass-command-to-system) - (setq mac-pass-command-to-system nil)) - -;; Some variables are buffer-local, so changing them using =setq= will only -;; change them in a single buffer. Using =setq-default= we change the -;; buffer-local variable's default value. - -(setq-default fill-column 76 ; Maximum line width. - indent-tabs-mode nil ; Use spaces instead of tabs. - split-width-threshold 100 ; Split verticly by default. - auto-fill-function 'do-auto-fill) ; Auto-fill-mode everywhere. - -;; The =load-path= specifies where Emacs should look for =.el=-files (or -;; Emacs lisp files). I have a directory called =site-lisp= where I keep all -;; extensions that have been installed manually (these are mostly my own -;; projects). - -(let ((default-directory (concat user-emacs-directory "site-lisp/"))) - (when (file-exists-p default-directory) - (normal-top-level-add-to-load-path '(".")) - (normal-top-level-add-subdirs-to-load-path))) - -;; Answering /yes/ and /no/ to each question from Emacs can be tedious, a -;; single /y/ or /n/ will suffice. - -(fset 'yes-or-no-p 'y-or-n-p) - -;; To avoid file system clutter we put all auto saved files in a single -;; directory. - -(defvar emacs-autosave-directory - (concat user-emacs-directory "autosaves/") - "This variable dictates where to put auto saves. It is set to a - directory called autosaves located wherever your .emacs.d/ is - located.") - -;; Sets all files to be backed up and auto saved in a single directory. -(setq backup-directory-alist - `((".*" . ,emacs-autosave-directory)) - auto-save-file-name-transforms - `((".*" ,emacs-autosave-directory t))) - -;; Set =utf-8= as preferred coding system. - -(set-language-environment "UTF-8") - -;; By default the =narrow-to-region= command is disabled and issues a -;; warning, because it might confuse new users. I find it useful sometimes, -;; and don't want to be warned. - -(put 'narrow-to-region 'disabled nil) - -;; Call =auto-complete= default configuration, which enables =auto-complete= -;; globally. - -(eval-after-load 'auto-complete-config `(ac-config-default)) - -;; Automaticly revert =doc-view=-buffers when the file changes on disk. - -(add-hook 'doc-view-mode-hook 'auto-revert-mode) - -;; Modes - -;; There are some modes that are enabled by default that I don't find -;; particularly useful. We create a list of these modes, and disable all of -;; these. - -(dolist (mode - '(tool-bar-mode ; No toolbars, more room for text. - scroll-bar-mode ; No scroll bars either. - blink-cursor-mode)) ; The blinking cursor gets old. - (funcall mode 0)) - -;; Let's apply the same technique for enabling modes that are disabled by -;; default. - -(dolist (mode - '(abbrev-mode ; E.g. sopl -> System.out.println. - column-number-mode ; Show column number in mode line. - delete-selection-mode ; Replace selected text. - dirtrack-mode ; directory tracking in *shell* - recentf-mode ; Recently opened files. - show-paren-mode ; Highlight matching parentheses. - projectile-global-mode ; Manage and navigate projects. - global-undo-tree-mode)) ; Undo as a tree. - (funcall mode 1)) - -(when (version< emacs-version "24.4") - (eval-after-load 'auto-compile - '((auto-compile-on-save-mode 1)))) ; compile .el files on save. - -;; This makes =.md=-files open in =markdown-mode=. - -(add-to-list 'auto-mode-alist '("\\.md\\'" . markdown-mode)) - -;; Visual - -;; Change the color-theme to =leuven=. - -(load-theme 'leuven t) - -;; =leuven= is my preferred light theme, but =monokai= makes a very nice -;; dark theme. I want to be able to cycle between these. - -(defun cycle-themes () - "Returns a function that lets you cycle your themes." - (lexical-let ((themes '#1=(leuven monokai . #1#))) - (lambda () - (interactive) - ;; Rotates the thme cycle and changes the current theme. - (load-theme (car (setq themes (cdr themes))) t)))) - -;; Use the [[http://www.levien.com/type/myfonts/inconsolata.html][Inconsolata]] font if it's installed on the system. - -(when (member "Inconsolata" (font-family-list)) - (set-face-attribute 'default nil :font "Inconsolata-14")) - -;; Ido - -;; Interactive do (or =ido-mode=) changes the way you switch buffers and -;; open files/directories. Instead of writing complete file paths and buffer -;; names you can write a part of it and select one from a list of -;; possibilities. Using =ido-vertical-mode= changes the way possibilities -;; are displayed, and =flx-ido-mode= enables fuzzy matching. - -(dolist (mode - '(ido-mode ; Interactivly do. - ido-everywhere ; Use Ido for all buffer/file reading. - ido-vertical-mode ; Makes ido-mode display vertically. - flx-ido-mode)) ; Toggle flx ido mode. - (funcall mode 1)) - -;; We can set the order of file selections in =ido=. I prioritize source -;; files along with =org=- and =tex=-files. - -(setq ido-file-extensions-order - '(".el" ".scm" ".lisp" ".java" ".c" ".h" ".org" ".tex")) - -;; Sometimes when using =ido-switch-buffer= the =*Messages*= buffer get in -;; the way, so we set it to be ignored (it can be accessed using =C-h e=, so -;; there is really no need for it in the buffer list). - -(add-to-list 'ido-ignore-buffers "*Messages*") - -;; To make =M-x= behave more like =ido-mode= we can use the =smex= -;; package. It needs to be initialized, and we can replace the binding to -;; the standard =execute-extended-command= with =smex=. - -(smex-initialize) - -;; Calendar - -;; Define a function to display week numbers in =calender-mode=. The snippet -;; is from [[http://www.emacswiki.org/emacs/CalendarWeekNumbers][EmacsWiki]]. - -(defun calendar-show-week (arg) - "Displaying week number in calendar-mode." - (interactive "P") - (copy-face font-lock-constant-face 'calendar-iso-week-face) - (set-face-attribute - 'calendar-iso-week-face nil :height 0.7) - (setq calendar-intermonth-text - (and arg - '(propertize - (format - "%2d" - (car (calendar-iso-from-absolute - (calendar-absolute-from-gregorian - (list month day year))))) - 'font-lock-face 'calendar-iso-week-face)))) - -;; Evaluate the =calendar-show-week= function. - -(calendar-show-week t) - -;; Set Monday as the first day of the week, and set my location. - -(setq calendar-week-start-day 1 - calendar-latitude 60.0 - calendar-longitude 10.7 - calendar-location-name "Oslo, Norway") - -;; mu4e and offlineimap - -;; I might not be at a computer using my very specific mail-setup, but if my -;; mail-folder exists, then it's probably safe to load. - -(defvar load-mail-setup (file-exists-p "~/.ifimail")) - -;; mu4e - -;; mu4e must be informed where it can find your mail and where the -;; different folders of interest are located. Some additional mu4e-tweaks -;; are supplied here as well. - -;; ~message-insert-signature~ is an existing Emacs function, that adds your -;; signature prefixed by a ~"-- "~ at the end of the email, which is a -;; convention I don't really follow. I redefine it as a function that adds -;; some newlines and my signature at the top of the email. - -(when load-mail-setup - (eval-after-load 'mu4e - '(progn - ;; Some basic mu4e settings. - (setq mu4e-maildir "~/.ifimail" ; top-level Maildir - mu4e-sent-folder "/Sent Items" ; folder for sent messages - mu4e-drafts-folder "/INBOX.Drafts" ; unfinished messages - mu4e-trash-folder "/INBOX.Trash" ; trashed messages - mu4e-get-mail-command "offlineimap" ; offlineimap to fetch mail - mu4e-compose-signature "- Lars" ; Sign my name - mu4e-update-interval (* 5 60) ; update every 5 min - mu4e-confirm-quit nil ; just quit - mu4e-view-show-images t ; view images - mu4e-html2text-command - "html2text -utf8") ; use utf-8 - - ;; Setup for sending mail. - (setq user-full-name - "Lars Tveito" ; Your full name - user-mail-address - "larstvei@ifi.uio.no" ; And email-address - smtpmail-smtp-server - "smtp.uio.no" ; Host to mail-server - smtpmail-smtp-service 465 ; Port to mail-server - smtpmail-stream-type 'ssl ; Protocol used for sending - send-mail-function 'smtpmail-send-it ; Use smpt to send - mail-user-agent 'mu4e-user-agent) ; Use mu4e - - ;; Register file types that can be handled by ImageMagick. - (when (fboundp 'imagemagick-register-types) - (imagemagick-register-types)) - - (add-hook 'mu4e-compose-mode-hook - (lambda () - (auto-fill-mode 0) - (visual-line-mode 1) - (ispell-change-dictionary "norsk"))) - - (add-hook 'mu4e-view-mode-hook (lambda () (visual-line-mode 1))) - - (defun message-insert-signature () - (goto-char (point-min)) - (search-forward-regexp "^$") - (insert "\n\n\n" mu4e-compose-signature)))) - - (autoload 'mu4e "mu4e" nil t)) - -;; Flyspell - -;; Flyspell offers on-the-fly spell checking. We can enable flyspell for all -;; text-modes with this snippet. - -(add-hook 'text-mode-hook 'turn-on-flyspell) - -;; To use flyspell for programming there is =flyspell-prog-mode=, that only -;; enables spell checking for comments and strings. We can enable it for all -;; programming modes using the =prog-mode-hook=. Flyspell interferes with -;; auto-complete mode, but there is a workaround provided by auto complete. - -(add-hook 'prog-mode-hook 'flyspell-prog-mode) -(eval-after-load 'auto-complete - '(ac-flyspell-workaround)) - -;; When working with several languages, we should be able to cycle through -;; the languages we most frequently use. Every buffer should have a separate -;; cycle of languages, so that cycling in one buffer does not change the -;; state in a different buffer (this problem occurs if you only have one -;; global cycle). We can implement this by using a [[http://www.gnu.org/software/emacs/manual/html_node/elisp/Closures.html][closure]]. - -(defun cycle-languages () - "Changes the ispell dictionary to the first element in -ISPELL-LANGUAGES, and returns an interactive function that cycles -the languages in ISPELL-LANGUAGES when invoked." - (lexical-let ((ispell-languages '#1=("american" "norsk" . #1#))) - (ispell-change-dictionary (car ispell-languages)) - (lambda () - (interactive) - ;; Rotates the languages cycle and changes the ispell dictionary. - (ispell-change-dictionary - (car (setq ispell-languages (cdr ispell-languages))))))) - -;; =Flyspell= signals an error if there is no spell-checking tool is -;; installed. We can advice =turn-on-flyspell= and =flyspell-prog-mode= to -;; only try to enable =flyspell= if a spell-checking tool is available. Also -;; we want to enable cycling the languages by typing =C-c l=, so we bind the -;; function returned from =cycle-languages=. - -(defadvice turn-on-flyspell (before check nil activate) - "Turns on flyspell only if a spell-checking tool is installed." - (when (executable-find ispell-program-name) - (local-set-key (kbd "C-c l") (cycle-languages)))) - -(defadvice flyspell-prog-mode (before check nil activate) - "Turns on flyspell only if a spell-checking tool is installed." - (when (executable-find ispell-program-name) - (local-set-key (kbd "C-c l") (cycle-languages)))) - -;; Org - -;; I use =org-agenda= for appointments and such. - -(setq org-agenda-start-on-weekday nil ; Show agenda from today. - org-agenda-files '("~/Dropbox/cal.org") ; A list of agenda files. - org-agenda-default-appointment-duration 120) ; 2 hours appointments. - -;; When editing org-files with source-blocks, we want the source blocks to -;; be themed as they would in their native mode. - -(setq org-src-fontify-natively t - org-confirm-babel-evaluate nil) - -;; This is quite an ugly fix for allowing code markup for expressions like -;; ="this string"=, because the quotation marks causes problems. - -;;(require 'org) -(eval-after-load "org" - '(progn - (setcar (nthcdr 2 org-emphasis-regexp-components) " \t\n,") - (custom-set-variables `(org-emphasis-alist ',org-emphasis-alist)))) - -;; Interactive functions -;; <> - -;; To search recent files useing =ido-mode= we add this snippet from -;; [[http://www.emacswiki.org/emacs/CalendarWeekNumbers][EmacsWiki]]. - -(defun recentf-ido-find-file () - "Find a recent file using Ido." - (interactive) - (let ((f (ido-completing-read "Choose recent file: " recentf-list nil t))) - (when f - (find-file f)))) - -;; =just-one-space= removes all whitespace around a point - giving it a -;; negative argument it removes newlines as well. We wrap a interactive -;; function around it to be able to bind it to a key. In Emacs 24.4 -;; =cycle-spacing= was introduced, and it works like just one space, but -;; when run in succession it cycles between one, zero and the original -;; number of spaces. - -(defun cycle-spacing-delete-newlines () - "Removes whitespace before and after the point." - (interactive) - (if (version< emacs-version "24.4") - (just-one-space -1) - (cycle-spacing -1))) - -;; Often I want to find other occurrences of a word I'm at, or more -;; specifically the symbol (or tag) I'm at. The -;; =isearch-forward-symbol-at-point= in Emacs 24.4 works well for this, but -;; I don't want to be bothered with the =isearch= interface. Rather jump -;; quickly between occurrences of a symbol, or if non is found, don't do -;; anything. - -(defun jump-to-symbol-internal (&optional backwardp) - "Jumps to the next symbol near the point if such a symbol -exists. If BACKWARDP is non-nil it jumps backward." - (let* ((point (point)) - (bounds (find-tag-default-bounds)) - (beg (car bounds)) (end (cdr bounds)) - (str (isearch-symbol-regexp (find-tag-default))) - (search (if backwardp 'search-backward-regexp - 'search-forward-regexp))) - (goto-char (if backwardp beg end)) - (funcall search str nil t) - (cond ((<= beg (point) end) (goto-char point)) - (backwardp (forward-char (- point beg))) - (t (backward-char (- end point)))))) - -(defun jump-to-previous-like-this () - "Jumps to the previous occurrence of the symbol at point." - (interactive) - (jump-to-symbol-internal t)) - -(defun jump-to-next-like-this () - "Jumps to the next occurrence of the symbol at point." - (interactive) - (jump-to-symbol-internal)) - -;; I sometimes regret killing the =*scratch*=-buffer, and have realized I -;; never want to actually kill it. I just want to get it out of the way, and -;; clean it up. The function below does just this for the -;; =*scratch*=-buffer, and works like =kill-this-buffer= for any other -;; buffer. It removes all buffer content and buries the buffer (this means -;; making it the least likely candidate for =other-buffer=). - -(defun kill-this-buffer-unless-scratch () - "Works like `kill-this-buffer' unless the current buffer is the -*scratch* buffer. In witch case the buffer content is deleted and -the buffer is buried." - (interactive) - (if (not (string= (buffer-name) "*scratch*")) - (kill-this-buffer) - (delete-region (point-min) (point-max)) - (switch-to-buffer (other-buffer)) - (bury-buffer "*scratch*"))) - -;; To duplicate either selected text or a line we define this interactive -;; function. - -(defun duplicate-thing (comment) - "Duplicates the current line, or the region if active. If an argument is -given, the duplicated region will be commented out." - (interactive "P") - (save-excursion - (let ((start (if (region-active-p) (region-beginning) (point-at-bol))) - (end (if (region-active-p) (region-end) (point-at-eol)))) - (goto-char end) - (unless (region-active-p) - (newline)) - (insert (buffer-substring start end)) - (when comment (comment-region start end))))) - -;; To tidy up a buffer we define this function borrowed from [[https://github.com/simenheg][simenheg]]. - -(defun tidy () - "Ident, untabify and unwhitespacify current buffer, or region if active." - (interactive) - (let ((beg (if (region-active-p) (region-beginning) (point-min))) - (end (if (region-active-p) (region-end) (point-max)))) - (indent-region beg end) - (whitespace-cleanup) - (untabify beg (if (< end (point-max)) end (point-max))))) - -;; Advice - -;; An advice can be given to a function to make it behave differently. This -;; advice makes =eval-last-sexp= (bound to =C-x C-e=) replace the sexp with -;; the value. - -(defadvice eval-last-sexp (around replace-sexp (arg) activate) - "Replace sexp when called with a prefix argument." - (if arg - (let ((pos (point))) - ad-do-it - (goto-char pos) - (backward-kill-sexp) - (forward-sexp)) - ad-do-it)) - -;; When interactively changing the theme (using =M-x load-theme=), the -;; current custom theme is not disabled. This often gives weird-looking -;; results; we can advice =load-theme= to always disable themes currently -;; enabled themes. - -(defadvice load-theme - (before disable-before-load (theme &optional no-confirm no-enable) activate) - (mapc 'disable-theme custom-enabled-themes)) - -;; Presentation-mode - -;; When giving talks it's nice to be able to adjust the size of everything -;; (not just a buffer like ~text-scale-mode~ provides). This is not a -;; particularly neat solution, but it works OK. It simply -;; increases/decreases the size of the font. It assumes that your using -;; Inconsolata with size 14 by default. This should be probably be -;; generalized (or maybe be substituted by a package if it's out there). - -(defun global-scale-default () - (interactive) - (set-face-attribute 'default nil :font "Inconsolata-14")) - -(lexical-let ((size 14)) - (defun global-scale-up () - (interactive) - (set-face-attribute - 'default nil - :font (concat "Inconsolata-" (number-to-string (incf size))))) - - (defun global-scale-down () - (interactive) - (set-face-attribute - 'default nil - :font (concat "Inconsolata-" (number-to-string (decf size)))))) - -;; Shell - -;; I use =shell= whenever i want to use access the command line in Emacs. I -;; keep a symlink between my =~/.bash_profile= (because I run OS X) and -;; =~/.emacs_bash=, to make the transition between my standard terminal and -;; the shell as small as possible. To be able to quickly switch back and -;; forth between a shell I make use of this little function. - -(defun toggle-shell () - "Jumps to eshell or back." - (interactive) - (if (string= (buffer-name) "*shell*") - (switch-to-prev-buffer) - (shell))) - -;; I'd like the =C-l= to work more like the standard terminal (which works -;; like running =clear=), and resolve this by simply removing the -;; buffer-content. Mind that this is not how =clear= works, it simply adds a -;; bunch of newlines, and puts the prompt at the top of the window, so it -;; does not remove anything. In Emacs removing stuff is less of a worry, -;; since we can always undo! - -(defun clear-comint () - "Runs `comint-truncate-buffer' with the -`comint-buffer-maximum-size' set to zero." - (interactive) - (let ((comint-buffer-maximum-size 0)) - (comint-truncate-buffer))) - -;; Lastly we should bind our functions. The =toggle-shell= should be a -;; global binding (because we want to be able to switch to a shell from any -;; buffer), but the =clear-shell= should only affect =shell-mode=. - -(add-hook 'comint-mode-hook (lambda () (local-set-key (kbd "C-l") 'clear-comint))) - -;; Lisp - -;; =Pretty-lambda= provides a customizable variable -;; =pretty-lambda-auto-modes= that is a list of common lisp modes. Here we -;; can add some extra lisp-modes. We run the =pretty-lambda-for-modes= -;; function to activate =pretty-lambda-mode= in lisp modes. - -(dolist (mode '(slime-repl-mode geiser-repl-mode ielm-mode clojure-mode - cider-repl-mode)) - (add-to-list 'pretty-lambda-auto-modes mode)) - -(pretty-lambda-for-modes) - -;; I use =Paredit= when editing lisp code, we enable this for all lisp-modes -;; in the =pretty-lambda-auto-modes= list. - -(dolist (mode pretty-lambda-auto-modes) - ;; add paredit-mode to all mode-hooks - (add-hook (intern (concat (symbol-name mode) "-hook")) 'paredit-mode)) - -;; Emacs Lisp - -;; In =emacs-lisp-mode= we can enable =eldoc-mode= to display information -;; about a function or a variable in the echo area. - -(add-hook 'emacs-lisp-mode-hook 'turn-on-eldoc-mode) -(add-hook 'lisp-interaction-mode-hook 'turn-on-eldoc-mode) - -;; Common lisp - -;; I use [[http://www.common-lisp.net/project/slime/][Slime]] along with =lisp-mode= to edit Common Lisp code. Slime -;; provides code evaluation and other great features, a must have for a -;; Common Lisp developer. [[http://www.quicklisp.org/beta/][Quicklisp]] is a library manager for Common Lisp, -;; and you can install Slime following the instructions from the site along -;; with this snippet. - -(defun activate-slime-helper () - (when (file-exists-p "~/.quicklisp/slime-helper.elc") - (load (expand-file-name "~/.quicklisp/slime-helper.elc")) - (define-key slime-repl-mode-map (kbd "C-l") - 'slime-repl-clear-buffer)) - (remove-hook 'lisp-mode-hook #'activate-slime-helper)) - -(add-hook 'lisp-mode-hook #'activate-slime-helper) - -;; We can specify what Common Lisp program Slime should use (I use SBCL). - -(setq inferior-lisp-program "sbcl") - -;; To improve auto completion for Common Lisp editing we can use =ac-slime= -;; which uses slime completions as a source. - -(add-hook 'slime-mode-hook 'set-up-slime-ac) -(add-hook 'slime-repl-mode-hook 'set-up-slime-ac) - -(eval-after-load "auto-complete" - '(add-to-list 'ac-modes 'slime-repl-mode)) - -;; More sensible =loop= indentation, borrowed from [[https://github.com/simenheg][simenheg]]. - -(setq lisp-loop-forms-indentation 6 - lisp-simple-loop-indentation 2 - lisp-loop-keyword-indentation 6) - - - -;; Scheme - -;; [[http://www.nongnu.org/geiser/][Geiser]] provides features similar to Slime for Scheme editing. Everything -;; works pretty much out of the box, we only need to add auto completion, -;; and specify which scheme-interpreter we prefer. - -(add-hook 'geiser-mode-hook 'ac-geiser-setup) -(add-hook 'geiser-repl-mode-hook 'ac-geiser-setup) -(eval-after-load "auto-complete" - '(add-to-list 'ac-modes 'geiser-repl-mode)) -(eval-after-load "geiser" - '(setq geiser-active-implementations '(racket))) - -;; Java and C - -;; The =c-mode-common-hook= is a general hook that work on all C-like -;; languages (C, C++, Java, etc...). I like being able to quickly compile -;; using =C-c C-c= (instead of =M-x compile=), a habit from =latex-mode=. - -(defun c-setup () - (local-set-key (kbd "C-c C-c") 'compile)) - -(add-hook 'c-mode-common-hook 'c-setup) - -;; Some statements in Java appear often, and become tedious to write -;; out. We can use abbrevs to speed this up. - -(define-abbrev-table 'java-mode-abbrev-table - '(("psv" "public static void main(String[] args) {" nil 0) - ("sopl" "System.out.println" nil 0) - ("sop" "System.out.printf" nil 0))) - -;; To be able to use the abbrev table defined above, =abbrev-mode= must be -;; activated. - -(defun java-setup () - (abbrev-mode t) - (setq-local compile-command (concat "javac " (buffer-name)))) - -(add-hook 'java-mode-hook 'java-setup) - -;; Assembler - -;; When writing assembler code I use =#= for comments. By defining -;; =comment-start= we can add comments using =M-;= like in other programming -;; modes. Also in assembler should one be able to compile using =C-c C-c=. - -(defun asm-setup () - (setq comment-start "#") - (local-set-key (kbd "C-c C-c") 'compile)) - -(add-hook 'asm-mode-hook 'asm-setup) - -;; LaTeX and org-mode LaTeX export - -;; =.tex=-files should be associated with =latex-mode= instead of -;; =tex-mode=. - -(add-to-list 'auto-mode-alist '("\\.tex\\'" . latex-mode)) - -;; Use ~biblatex~ for bibliography. - -(setq-default bibtex-dialect 'biblatex) - -;; I like using the [[https://code.google.com/p/minted/][Minted]] package for source blocks in LaTeX. To make org -;; use this we add the following snippet. - -(eval-after-load 'org - '(add-to-list 'org-latex-packages-alist '("" "minted"))) -(setq org-latex-listings 'minted) - -;; Because [[https://code.google.com/p/minted/][Minted]] uses [[http://pygments.org][Pygments]] (an external process), we must add the -;; =-shell-escape= option to the =org-latex-pdf-process= commands. The -;; =tex-compile-commands= variable controls the default compile command for -;; Tex- and LaTeX-mode, we can add the flag with a rather dirty statement -;; (if anyone finds a nicer way to do this, please let me know). - -(eval-after-load 'tex-mode - '(setcar (cdr (cddaar tex-compile-commands)) " -shell-escape ")) - -;; When exporting from Org to LaTeX, use ~latexmk~ for compilation. - -(eval-after-load 'ox-latex - '(setq org-latex-pdf-process - '("latexmk -pdflatex='pdflatex -shell-escape -interaction nonstopmode' -pdf -f %f"))) - -;; For my thesis, I need to use our university's LaTeX class, this snippet -;; makes that class available. - -(eval-after-load "ox-latex" - '(progn - (add-to-list 'org-latex-classes - '("ifimaster" - "\\documentclass{ifimaster} -[DEFAULT-PACKAGES] -[PACKAGES] -[EXTRA] -\\usepackage{babel,csquotes,ifimasterforside,url,varioref}" - ("\\chapter{%s}" . "\\chapter*{%s}") - ("\\section{%s}" . "\\section*{%s}") - ("\\subsection{%s}" . "\\subsection*{%s}") - ("\\subsubsection{%s}" . "\\subsubsection*{%s}") - ("\\paragraph{%s}" . "\\paragraph*{%s}") - ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))) - (custom-set-variables '(org-export-allow-bind-keywords t)))) - -;; Markdown - -;; I sometimes use a specialized markdown format, where inline math-blocks -;; can be achieved by surrounding a LaTeX formula with =$math$= and -;; =$/math$=. Writing these out became tedious, so I wrote a small function. - -(defun insert-markdown-inline-math-block () - "Inserts an empty math-block if no region is active, otherwise wrap a -math-block around the region." - (interactive) - (let* ((beg (region-beginning)) - (end (region-end)) - (body (if (region-active-p) (buffer-substring beg end) ""))) - (when (region-active-p) - (delete-region beg end)) - (insert (concat "$math$ " body " $/math$")) - (search-backward " $/math$"))) - -;; Most of my writing in this markup is in Norwegian, so the dictionary is -;; set accordingly. The markup is also sensitive to line breaks, so -;; =auto-fill-mode= is disabled. Of course we want to bind our lovely -;; function to a key! - -(add-hook 'markdown-mode-hook - (lambda () - (auto-fill-mode 0) - (ispell-change-dictionary "norsk") - (local-set-key (kbd "C-c b") 'insert-markdown-inline-math-block)) t) - -;; Haskell - -;; =haskell-doc-mode= is similar to =eldoc=, it displays documentation in -;; the echo area. Haskell has several indentation modes - I prefer using -;; =haskell-indent=. - -(add-hook 'haskell-mode-hook 'turn-on-haskell-doc-mode) -(add-hook 'haskell-mode-hook 'turn-on-haskell-indent) - -;; Matlab - -;; =Matlab-mode= works pretty good out of the box, but we can do without the -;; splash screen. - -(eval-after-load 'matlab - '(add-to-list 'matlab-shell-command-switches "-nosplash")) - -;; Key bindings - -;; Inspired by [[http://stackoverflow.com/questions/683425/globally-override-key-binding-in-emacs][this StackOverflow post]] I keep a =custom-bindings-map= that -;; holds all my custom bindings. This map can be activated by toggling a -;; simple =minor-mode= that does nothing more than activating the map. This -;; inhibits other =major-modes= to override these bindings. I keep this at -;; the end of the init-file to make sure that all functions are actually -;; defined. - -(defvar custom-bindings-map (make-keymap) - "A keymap for custom bindings.") - -;; Bindings for [[https://github.com/magnars/expand-region.el][expand-region]]. - -(define-key custom-bindings-map (kbd "C-'") 'er/expand-region) -(define-key custom-bindings-map (kbd "C-\"") 'er/contract-region) - -;; Bindings for [[https://github.com/magnars/multiple-cursors.el][multiple-cursors]]. - -(define-key custom-bindings-map (kbd "C-c e") 'mc/edit-lines) -(define-key custom-bindings-map (kbd "C-c a") 'mc/mark-all-like-this) -(define-key custom-bindings-map (kbd "C-c n") 'mc/mark-next-like-this) - -;; Bindings for [[http://magit.github.io][Magit]]. - -(define-key custom-bindings-map (kbd "C-c m") 'magit-status) - -;; Bindings for [[https://github.com/winterTTr/ace-jump-mode][ace-jump-mode]]. - -(define-key custom-bindings-map (kbd "C-c SPC") 'ace-jump-mode) - -;; Bindings for [[http://emacs-helm.github.io/helm/][Helm]]. - -(define-key custom-bindings-map (kbd "C-c h g") 'helm-google-suggest) - -;; Bindings for [[https://github.com/nonsequitur/smex][smex]]. This overrides the standard =M-x=. - -(define-key custom-bindings-map (kbd "M-x") 'smex) - -;; Bindings for =move-text=. - -(define-key custom-bindings-map (kbd "") 'move-text-up) -(define-key custom-bindings-map (kbd "") 'move-text-down) - -;; Bind some native Emacs functions. - -(define-key custom-bindings-map (kbd "C-j") 'newline-and-indent) -(define-key custom-bindings-map (kbd "C-c s") 'ispell-word) -(define-key custom-bindings-map (kbd "C-c t") 'org-agenda-list) -(define-key custom-bindings-map (kbd "C-x C-r") 'recentf-ido-find-file) -(define-key custom-bindings-map (kbd "C-x m") 'mu4e) - -;; Bind the functions defined [[sec:defuns][above]]. - -(define-key global-map (kbd "M-p") 'jump-to-previous-like-this) -(define-key global-map (kbd "M-n") 'jump-to-next-like-this) -(define-key custom-bindings-map (kbd "M-,") 'jump-to-previous-like-this) -(define-key custom-bindings-map (kbd "M-.") 'jump-to-next-like-this) -(define-key custom-bindings-map (kbd "C-c .") (cycle-themes)) -(define-key custom-bindings-map (kbd "C-x k") 'kill-this-buffer-unless-scratch) -(define-key custom-bindings-map (kbd "C-c C-0") 'global-scale-default) -(define-key custom-bindings-map (kbd "C-c C-=") 'global-scale-up) -(define-key custom-bindings-map (kbd "C-c C--") 'global-scale-down) -(define-key custom-bindings-map (kbd "C-x t") 'toggle-shell) -(define-key custom-bindings-map (kbd "C-c j") 'cycle-spacing-delete-newlines) -(define-key custom-bindings-map (kbd "C-c d") 'duplicate-thing) -(define-key custom-bindings-map (kbd "") 'tidy) - -;; Lastly we need to activate the map by creating and activating the -;; =minor-mode=. - -(define-minor-mode custom-bindings-mode - "A mode that activates custom-bindings." - t nil custom-bindings-map) +;; This file replaces itself with the actual configuration at first run. + +;; We can't tangle without org! +(require 'org) +;; Open the configuration +(find-file (concat user-emacs-directory "init.org")) +;; tangle it +(org-babel-tangle) +;; load it +(load-file (concat user-emacs-directory "init.el")) +;; finally byte-compile it +(byte-compile-file (concat user-emacs-directory "init.el"))