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dotfiles/.emacs.d/emacs.org
Correl Roush 417548b4c4 Fix configuration of inline images within gnus 
Ensure the mm-attachment-override-types custom variable is loaded before
adding to it by requiring mm-decode.
2016-01-13 10:14:48 -05:00

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#+TITLE: Emacs Configuration
#+STARTUP: indent
* Startup
** Disable the emacs startup screen.
#+name: startup
#+BEGIN_SRC emacs-lisp
(setq inhibit-startup-screen +1)
#+END_SRC
* UI
** Theme
#+name: look-and-feel
#+BEGIN_SRC emacs-lisp
(use-package solarized-theme
:ensure t
:init (load-theme 'solarized-dark 't))
#+END_SRC
** Helm
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package helm
:ensure t
:diminish helm-mode
:bind (("M-x" . helm-M-x)
("M-y" . helm-show-kill-ring)
("C-x b" . helm-mini)
("C-x C-b" . helm-buffers-list)
("C-x C-f" . helm-find-files)
("C-x C-r" . helm-recentf)
("C-x c o" . helm-occur))
:config (progn
(require 'helm-config)
(helm-mode 1)
(add-hook 'eshell-mode-hook
(lambda ()
(define-key eshell-mode-map (kbd "TAB") 'helm-esh-pcomplete)
(define-key eshell-mode-map (kbd "C-c C-l") 'helm-eshell-history)))))
#+END_SRC
*** helm-descbinds
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package helm-descbinds
:ensure t
:bind (("C-h b" . helm-descbinds)
("C-h w" . helm-descbinds)))
#+END_SRC
*** helm-ag
Helm search plugin for [[Ag%20(The%20Silver%20Searcher)][Ag (The Silver Searcher)]]
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package helm-ag
:ensure t
:defer t)
#+END_SRC
*** helm-projectile
Helm projectile integration
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package helm-projectile
:ensure t
:defer t)
#+END_SRC
*** helm-flyspell
#+name: packages
#+begin_src emacs-lisp
(use-package helm-flyspell
:ensure t
:commands helm-flyspell-correct
:init (eval-after-load 'flyspell
'(define-key flyspell-mode-map (kbd "C-;") 'helm-flyspell-correct)))
#+end_src
*** helm-swoop
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package helm-swoop
:ensure t
:bind (("C-x c s" . helm-swoop))
:commands (helm-swoop
helm-swoop-from-isearch)
:init
(define-key isearch-mode-map (kbd "M-i") 'helm-swoop-from-isearch)
:config
(setq helm-swoop-speed-or-color t)
(define-key helm-swoop-map (kbd "M-i") 'helm-multi-swoop-all-from-helm-swoop)
(define-key helm-swoop-map (kbd "M-m") 'helm-multi-swoop-current-mode-from-helm-swoop))
#+END_SRC
** Ace Jump
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package ace-jump-mode
:ensure t
:defer t)
#+END_SRC
*** ace-window
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package ace-window
:ensure t
:bind ("C-x o" . ace-window))
#+END_SRC
** Which Key
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package which-key
:ensure t
:diminish which-key-mode
:config (which-key-mode t))
#+END_SRC
** Expand Region
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package expand-region
:ensure t
:bind ("C-=" . er/expand-region))
#+END_SRC
** Powerline
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package powerline
:ensure t
:init (powerline-default-theme))
#+END_SRC
** Projectile
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package projectile
:ensure t
:config (progn (setq projectile-mode-line
'(:eval (format " [%s]" (projectile-project-name))))
(require 'helm-projectile)
(helm-projectile-on)
(projectile-global-mode)))
#+END_SRC
** Undo-Tree
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package undo-tree
:ensure t
:diminish undo-tree-mode
:config (global-undo-tree-mode 1))
#+END_SRC
* Coding
** Languages
*** Lisps
#+name: lisps
| Mode | Description |
|------------+---------------------------|
| lisp | Common Lisp |
| emacs-lisp | Emacs Lisp |
| scheme | Scheme |
| lfe | Lisp-Flavored Erlang |
| clojure | Clojure |
| hy | Hy (Lisp-flavored Python) |
#+name: programming
#+BEGIN_SRC emacs-lisp :noweb yes
;; SLIME
(if (file-exists-p "~/quicklisp/slime-helper.el")
(load (expand-file-name "~/quicklisp/slime-helper.el")))
(setq inferior-lisp-program "clisp")
(use-package paredit
:ensure t)
(use-package rainbow-identifiers
:ensure t)
(use-package rainbow-delimiters
:ensure t)
(let ((lisp-mode-hooks
(mapcar (lambda (lisp)
(intern (concat lisp "-mode-hook")))
(mapcar 'car (cddr '<<lisps()>>)))))
(mapc (lambda (hook)
(message (format "Installing LISP mode hook for %S" hook))
(add-hook hook (lambda ()
(show-paren-mode t)
(electric-indent-mode t)
(paredit-mode t)
(rainbow-delimiters-mode t)
(rainbow-identifiers-mode t))))
(cons 'eval-expression-minibuffer-setup-hook
lisp-mode-hooks)))
#+END_SRC
**** Lisp-Flavored Erlang
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package lfe-mode
:ensure t
:mode "\\.lfe$")
#+END_SRC
**** Clojure
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package clojure-mode
:ensure t
:mode (("\\.clj[sx]?$" . clojure-mode)
("\\.edn$" . clojure-mode)))
#+END_SRC
***** Cider
Communicates with the clojure REPL.
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package cider
:ensure t
:commands (cider-jack-in cider)
:config (setq org-babel-clojure-backend 'cider))
#+END_SRC
**** Hy
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package hy-mode
:ensure t
:mode "\\.hy$")
#+END_SRC
*** Erlang
A distributed, fault-tolerant functional language.
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package erlang
:ensure t
:mode ("\.[eh]rl$" . erlang-mode)
:config (add-hook 'erlang-mode-hook
(lambda ()
(setq inferior-erlang-machine-options '("-sname" "emacs"
"-hidden")))))
#+END_SRC
*** Haskell
A strongly typed, pure functional language.
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package haskell-mode
:ensure t
:mode "\.hs$")
(use-package hi2
:ensure t
:commands turn-on-hi2
:init (add-hook 'haskell-mode-hook 'turn-on-hi2))
#+END_SRC
*** PHP
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package web-mode
:ensure t
:mode "\\.html?$")
(use-package php-mode
:ensure t
:mode (("\\.php$" . php-mode)
("\\.inc$" . php-mode))
:config (add-hook 'php-mode-hook (lambda ()
"Customize PHP indentation"
(c-set-offset 'arglist-cont-nonempty 'c-lineup-arglist)
(c-set-offset 'substatement-open 0)
(c-set-offset 'case-label '+))))
#+END_SRC
*** Python
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package python-mode
:ensure t
:mode "\.py$")
#+END_SRC
**** Cython
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package cython-mode
:ensure t
:mode "\.pyx$")
#+END_SRC
**** Company-Jedi
Configure jedi and company-mode to provide auto-completion for python.
#+name: programming
#+begin_src emacs-lisp
(use-package jedi
:ensure t
:commands jedi:setup
:config (progn
(setq jedi:use-shortcuts t)
(jedi:install-server)))
(use-package pungi
:ensure t
:commands pungi:setup-jedi
:init (add-hook #'python-mode-hook
(lambda ()
(when buffer-file-name
#'pungi:setup-jedi))))
(use-package company-jedi
:ensure t
:config (progn
(defun my/enable-company-jedi ()
(when buffer-file-name
(add-to-list 'company-backends 'company-jedi)))
(add-hook #'python-mode-hook
#'my/enable-company-jedi)))
#+end_src
*** Ruby
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package rvm
:ensure t
:config (rvm-use-default))
#+END_SRC
*** Yaml
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package yaml-mode
:ensure t
:mode "\.yml$")
#+END_SRC
*** Docker
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package dockerfile-mode
:ensure t
:mode "^Dockerfile$")
#+END_SRC
*** Graphviz
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package graphviz-dot-mode
:ensure t
:mode "\.dot$")
#+END_SRC
*** Gnuplot
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package gnuplot
:ensure t)
#+END_SRC
** Tools
*** Autocomplete
**** Company
Install and configure Company for auto-completion.
#+name: autocomplete
#+BEGIN_SRC emacs-lisp
(use-package company
:ensure t
:config (progn
(add-hook 'prog-mode-hook 'company-mode)
(bind-key "C-n" #'company-select-next company-active-map)
(bind-key "C-p" #'company-select-previous company-active-map)))
#+END_SRC
**** Auto-Complete
Not using this for auto-completion anymore, but several packages
require it.
#+name: autocomplete
#+begin_src emacs-lisp
(use-package auto-complete
:ensure t)
#+end_src
*** Flycheck
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package flycheck
:ensure t
:init
(add-hook 'after-init-hook #'global-flycheck-mode))
#+END_SRC
*** Web Mode
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package web-mode
:ensure t
:mode ("\\.html$" . web-mode)
:config (add-hook 'web-mode-hook (lambda ()
(setq web-mode-markup-indent-offset 4)
(setq web-mode-css-indent-offset 4)
(setq web-mode-code-indent-offset 4))))
#+END_SRC
*** Yasnippet
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package yasnippet
:ensure t
:diminish yas-minor-mode
:config (yas-global-mode 1))
#+END_SRC
*** Ag (The Silver Searcher)
This is a code searching tool that replaces =ack=, and is an order of
magnitude faster.
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package ag
:ensure t
:defer t)
#+END_SRC
** Libraries
*** Dash
A modern list api for Emacs. No 'cl required.
#+name: programming
#+BEGIN_SRC emacs-lisp
(use-package dash
:ensure t
:config (dash-enable-font-lock))
#+END_SRC
* Writing
** Formats
*** Org
**** Modules
#+name: org-module-table
| org-habit |
#+name: packages
#+BEGIN_SRC emacs-lisp :noweb yes
(let ((modules (mapcar (lambda (m) (intern (car m)))
'<<org-module-table()>>)))
(mapcar (lambda (m) (add-to-list 'org-modules m))
modules))
(org-load-modules-maybe t)
#+END_SRC
**** Tasks
***** Enforce dependencies
Require child tasks and checkboxes to be done before a parent task can
be marked done.
#+BEGIN_SRC emacs-lisp
(setq
org-enforce-todo-dependencies t
org-enforce-todo-checkbox-dependencies t)
#+END_SRC
***** Keep logs in their own drawer
#+name: packages
#+BEGIN_SRC emacs-lisp
(setq org-log-into-drawer t)
#+END_SRC
***** Log completion
#+name: packages
#+BEGIN_SRC emacs-lisp
(setq org-log-done 'time)
#+END_SRC
***** Habits
Shift the consistency graph over a bit to make room for task
names.
#+name: packages
#+BEGIN_SRC emacs-lisp
(setq org-habit-graph-column 70)
(setq org-habit-show-habits-only-for-today nil)
#+END_SRC
**** Refiling
#+BEGIN_SRC emacs-lisp
(setq org-refile-targets '((org-agenda-files . (:maxlevel . 6))))
#+END_SRC
**** Babel
***** Syntax highlighting
#+name: packages
#+BEGIN_SRC emacs-lisp
(setq-default org-src-fontify-natively t)
#+END_SRC
***** HTTP
#+name: packages
#+begin_src emacs-lisp
(use-package ob-http
:ensure t)
#+end_src
***** Language evaluation
Org-babel evaluation will be turned on for the following
languages. Setting ~Confirm Evaluation~ to ~No~ disables the
[[http://orgmode.org/manual/Code-evaluation-security.html][security prompt]] for that language.
#+name: org-babel-languages
| Language | Alias | Confirm Evaluation? | Description |
|--------------+-------+---------------------+---------------------------------|
| emacs-lisp | | Yes | Emacs Lisp |
| graphviz-dot | dot | No | Directed and undirected graphs |
| gnuplot | | No | Graphs |
| ditaa | | No | Ascii diagrams |
| plantuml | | No | Flow charts |
| mscgen | | No | Message sequence charts |
| haskell | | Yes | A pure, functional language |
| python | | Yes | A dynamic, all-purpose language |
| ruby | | Yes | A dynamic, all-purpose language |
| sh | | Yes | Shell scripts |
| http | | No | HTTP requests |
| sql | | No | SQL Queries |
#+name: packages
#+BEGIN_SRC emacs-lisp :noweb yes
(defvar my/org-babel-evaluated-languages ())
(defvar my/org-src-lang-modes ())
(defvar my/org-babel-no-confirm-languages ())
(defun my/org-confirm-babel-evaluate (lang body)
(not (member (intern lang) my/org-babel-no-confirm-languages)))
(let ((language-table (cddr '<<org-babel-languages()>>)))
(mapcar (lambda (lang-pair)
(let* ((alias (if (not (string= (cadr lang-pair) "")) (cadr lang-pair)))
(lang (intern (car lang-pair)))
(lang-or-alias (if alias (intern alias) lang))
(confirm (not (string= (cl-caddr lang-pair) "No"))))
(if alias
(add-to-list 'my/org-src-lang-modes (cons alias lang)))
(if (not confirm)
(add-to-list 'my/org-babel-no-confirm-languages lang-or-alias))
(add-to-list 'my/org-babel-evaluated-languages lang-or-alias)
lang-or-alias))
language-table))
(mapcar (lambda (alias)
(add-to-list 'org-src-lang-modes alias))
my/org-src-lang-modes)
(org-babel-do-load-languages
'org-babel-load-languages
(mapcar (lambda (lang)
(cons lang t))
my/org-babel-evaluated-languages))
(setq org-confirm-babel-evaluate 'my/org-confirm-babel-evaluate)
#+END_SRC
***** Reload images on source execution
#+name: packages
#+begin_src emacs-lisp
(defun my/redisplay-org-images ()
(when org-inline-image-overlays
(org-redisplay-inline-images)))
(add-hook 'org-babel-after-execute-hook
'my/redisplay-org-images)
#+end_src
*** LaTeX
**** AUCTeX
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package tex-site
:ensure auctex)
#+END_SRC
**** LaTeX-Extra
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package latex-extra
:ensure t
:diminish latex-extra-mode
:commands latex-extra-mode
:init (add-hook 'LaTeX-mode-hook #'latex-extra-mode))
#+END_SRC
*** Markdown
#+name: packages
#+begin_src emacs-lisp
(use-package markdown-mode
:ensure t
:mode "\\.md$")
#+end_src
** Tools
*** Flyspell
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package flyspell
:ensure t
:commands flyspell-mode
:diminish flyspell-mode
:init (mapcar (lambda (mode-hook)
(add-to-list mode-hook #'flyspell-mode))
'(text-mode-hook
org-mode-hook)))
#+END_SRC
*** Unfill
Re-flowing paragraphs with =fill-paragraph= is nice, but there are
occasions when it's useful to do the inverse, and get rid of the line
breaks.
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package unfill
:ensure t
:commands (unfill-paragraph
unfill-region)
:bind ("M-Q" . unfill-paragraph))
#+END_SRC
*** Writegood
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package writegood-mode
:ensure t
:commands writegood-mode
:diminish writegood-mode
:init (mapcar (lambda (mode-hook)
(add-hook mode-hook #'writegood-mode))
'(text-mode-hook
org-mode-hook)))
#+END_SRC
* Mail
** BBDB
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package bbdb
:ensure t
:init (progn (require 'bbdb)
(bbdb-initialize 'gnus 'message)
(bbdb-mua-auto-update-init 'gnus 'message)
(setq bbdb-message-all-addresses t)
(add-hook 'gnus-summary-mode-hook
(lambda ()
(define-key gnus-summary-mode-map
(kbd ";") 'bbdb-mua-edit-field)))))
#+END_SRC
** Gnus
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package gnus
:commands gnus
:init (progn (defun my/configure-gnus ()
<<gnus>>
)
(setq gnus-before-startup-hook 'my/configure-gnus)))
#+END_SRC
*** Avoid rich-text messages
#+name: gnus
#+BEGIN_SRC emacs-lisp
(setq mm-discouraged-alternatives '("text/html" "text/richtext"))
#+END_SRC
*** Summary view formatting
Taken from http://groups.google.com/group/gnu.emacs.gnus/browse_thread/thread/a673a74356e7141f
#+name: gnus
#+BEGIN_SRC emacs-lisp
(when window-system
(setq gnus-sum-thread-tree-indent " ")
(setq gnus-sum-thread-tree-root "") ;; "● ")
(setq gnus-sum-thread-tree-false-root "") ;; "◯ ")
(setq gnus-sum-thread-tree-single-indent "") ;; "◎ ")
(setq gnus-sum-thread-tree-vertical "│")
(setq gnus-sum-thread-tree-leaf-with-other "├─► ")
(setq gnus-sum-thread-tree-single-leaf "╰─► "))
(setq gnus-summary-line-format
(concat
"%0{%U%R%z%}"
"%3{│%}" "%1{%d%}" "%3{│%}" ;; date
" "
"%4{%-20,20f%}" ;; name
" "
"%3{│%}"
" "
"%1{%B%}"
"%s\n"))
(setq gnus-summary-display-arrow t)
#+END_SRC
*** Inline images
#+name: gnus
#+BEGIN_SRC emacs-lisp
(require 'mm-decode)
(add-to-list 'mm-attachment-override-types "image/.*")
(setq mm-inline-large-images t)
#+END_SRC
* Publishing
** Htmlize
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package htmlize
:ensure t
:defer t
:commands (htmlize-region htmlize-buffer htmlize-file))
#+END_SRC
* Source Control
** Git-Gutter
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package git-gutter
:ensure t
:diminish git-gutter-mode
:bind (("C-x g n" . git-gutter:next-hunk)
("C-x g p" . git-gutter:previous-hunk))
:config
(progn
(global-git-gutter-mode t)
(defadvice ediff-make-temp-file (before make-temp-file-suspend-ll
activate compile preactivate)
"Disable git-gutter when running ediff"
(global-git-gutter-mode 0))
(add-hook 'ediff-cleanup-hook
'(lambda ()
(global-git-gutter-mode t)))))
#+END_SRC
** Magit
#+name: packages
#+BEGIN_SRC emacs-lisp
(use-package magit
:ensure t
:commands (magit-init
magit-status
magit-diff
magit-commit)
:bind (("C-c m s" . magit-status)
("C-c m d" . magit-diff)
("C-c m c" . magit-commit)
("C-c m l l" . magit-log-head)
("C-c m l b" . magit-log-buffer-file)
("C-c m l r" . magit-reflog-head))
:config
(progn
(defadvice magit-status (around magit-fullscreen activate)
(window-configuration-to-register :magit-fullscreen)
ad-do-it
(delete-other-windows))
(defadvice magit-quit-window (around magit-restore-screen activate)
ad-do-it
(jump-to-register :magit-fullscreen))))
(use-package magit-blame
:ensure magit
:commands magit-blame-mode
:bind ("C-c m b" . magit-blame))
#+END_SRC
* Other functionality
** Disable tab indenting by default
#+name: other
#+BEGIN_SRC emacs-lisp
(setq-default indent-tabs-mode nil)
#+END_SRC
** Rename file and buffer
Taken from [[http://emacsredux.com/blog/2013/05/04/rename-file-and-buffer/][Emacs Redux]]
#+name: other
#+BEGIN_SRC emacs-lisp
;; emacsredux.com
(defun rename-file-and-buffer ()
"Rename the current buffer and file it is visiting."
(interactive)
(let ((filename (buffer-file-name)))
(if (not (and filename (file-exists-p filename)))
(message "Buffer is not visiting a file!")
(let ((new-name (read-file-name "New name: " filename)))
(cond
((vc-backend filename) (vc-rename-file filename new-name))
(t
(rename-file filename new-name t)
(rename-buffer new-name)
(set-visited-file-name new-name)
(set-buffer-modified-p nil)))))))
#+END_SRC
** Eval and Replace
Taken from [[http://emacsredux.com/blog/2013/06/21/eval-and-replace/][Emacs Redux]]
#+name: other
#+BEGIN_SRC emacs-lisp
(defun eval-and-replace ()
"Replace the preceding sexp with its value."
(interactive)
(backward-kill-sexp)
(condition-case nil
(prin1 (eval (read (current-kill 0)))
(current-buffer))
(error (message "Invalid expression")
(insert (current-kill 0)))))
(global-set-key (kbd "C-)") 'eval-and-replace)
#+END_SRC
** Smarter navigation to the beginning of a line
Taken from [[http://emacsredux.com/blog/2013/05/22/smarter-navigation-to-the-beginning-of-a-line/][Emacs Redux]]
#+name: other
#+BEGIN_SRC emacs-lisp
(defun smarter-move-beginning-of-line (arg)
"Move point back to indentation of beginning of line.
Move point to the first non-whitespace character on this line.
If point is already there, move to the beginning of the line.
Effectively toggle between the first non-whitespace character and
the beginning of the line.
If ARG is not nil or 1, move forward ARG - 1 lines first. If
point reaches the beginning or end of the buffer, stop there."
(interactive "^p")
(setq arg (or arg 1))
;; Move lines first
(when (/= arg 1)
(let ((line-move-visual nil))
(forward-line (1- arg))))
(let ((orig-point (point)))
(back-to-indentation)
(when (= orig-point (point))
(move-beginning-of-line 1))))
;; remap C-a to `smarter-move-beginning-of-line'
(global-set-key [remap move-beginning-of-line]
'smarter-move-beginning-of-line)
#+END_SRC
** Edit file with sudo
Taken from [[http://www.emacswiki.org/TrampMode#toc32][EmacsWiki]]
#+name: other
#+BEGIN_SRC emacs-lisp
(require 'dired)
(defun sudo-edit-current-file ()
(interactive)
(let ((my-file-name) ; fill this with the file to open
(position)) ; if the file is already open save position
(if (equal major-mode 'dired-mode) ; test if we are in dired-mode
(progn
(setq my-file-name (dired-get-file-for-visit))
(find-alternate-file (prepare-tramp-sudo-string my-file-name)))
(setq my-file-name (buffer-file-name); hopefully anything else is an already opened file
position (point))
(find-alternate-file (prepare-tramp-sudo-string my-file-name))
(goto-char position))))
(defun prepare-tramp-sudo-string (tempfile)
(if (file-remote-p tempfile)
(let ((vec (tramp-dissect-file-name tempfile)))
(tramp-make-tramp-file-name
"sudo"
(tramp-file-name-user nil)
(tramp-file-name-host vec)
(tramp-file-name-localname vec)
(format "ssh:%s@%s|"
(tramp-file-name-user vec)
(tramp-file-name-host vec))))
(concat "/sudo:root@localhost:" tempfile)))
(define-key dired-mode-map [s-return] 'sudo-edit-current-file)
#+END_SRC
** Backups
Borrowed from Sacha Chua
https://github.com/sachac/.emacs.d/
This is one of the things people usually want to change right away. By default, Emacs saves backup files in the current directory. These are the files ending in =~= that are cluttering up your directory lists. The following code stashes them all in =~/.emacs.d/backups=, where I can find them with =C-x C-f= (=find-file=) if I really need to.
#+name: other
#+begin_src emacs-lisp
(setq backup-directory-alist '(("." . "~/.emacs.d/backups")))
#+end_src
Disk space is cheap. Save lots.
#+name: other
#+begin_src emacs-lisp
(setq delete-old-versions -1)
(setq version-control t)
(setq vc-make-backup-files t)
(setq auto-save-file-name-transforms '((".*" "~/.emacs.d/auto-save-list/" t)))
#+end_src
** History
From http://www.wisdomandwonder.com/wordpress/wp-content/uploads/2014/03/C3F.html
#+name: other
#+begin_src emacs-lisp
(setq savehist-file "~/.emacs.d/savehist")
(savehist-mode 1)
(setq history-length t)
(setq history-delete-duplicates t)
(setq savehist-save-minibuffer-history 1)
(setq savehist-additional-variables
'(kill-ring
search-ring
regexp-search-ring))
#+end_src
** Copy filename to clipboard
http://emacsredux.com/blog/2013/03/27/copy-filename-to-the-clipboard/
https://github.com/bbatsov/prelude
#+name: other
#+begin_src emacs-lisp
(defun prelude-copy-file-name-to-clipboard ()
"Copy the current buffer file name to the clipboard."
(interactive)
(let ((filename (if (equal major-mode 'dired-mode)
default-directory
(buffer-file-name))))
(when filename
(kill-new filename)
(message "Copied buffer file name '%s' to the clipboard." filename))))
#+end_src
** Prompt for 'y or n' instead of 'yes or no'
Because typing out "yes" and "no" is irritating.
#+name: other
#+BEGIN_SRC emacs-lisp
(defalias 'yes-or-no-p #'y-or-n-p)
#+END_SRC
* Custom settings
Store options set via =customize-*= in a separate file (Emacs stores
them in =init.el= by default).
#+name: custom-settings
#+BEGIN_SRC emacs-lisp
(setq custom-file "~/.emacs.d/custom.el")
(if (file-exists-p custom-file)
(load custom-file))
#+END_SRC
* Auto-loading elisp files
Any elisp files dropped into =~/.emacs.local.d/= will be
automatically loaded.
I usually use this is a testing ground for new configuration before
adding it here, and also for any personal / sensitive configuration.
#+name: auto-load
#+BEGIN_SRC emacs-lisp
(defun my/load-elisp-directory (path)
(let ((file-pattern "\\.elc?$"))
(when (file-directory-p path)
(mapcar (lambda (lisp-file)
(load-file lisp-file))
(directory-files (expand-file-name path) t file-pattern)))))
(my/load-elisp-directory "~/.emacs.local.d")
#+END_SRC
* Configuration file layout
Here I define the emacs.el file that gets generated by the code in
this org file.
#+BEGIN_SRC emacs-lisp :tangle yes :noweb no-export :exports code
;;;; Do not modify this file by hand. It was automatically generated
;;;; from `emacs.org` in the same directory. See that file for more
;;;; information.
;;;;
<<startup>>
<<look-and-feel>>
<<packages>>
<<programming>>
<<autocomplete>>
<<other>>
<<auto-load>>
<<custom-settings>>
#+END_SRC
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