legacy-dotfiles/emacs/init.org
Tom Willemsen a281f040cd Move .emacs.d to emacs
Since it's no longer placed directly in the home directory it doesn't
need to be named exacly the same.
2013-02-17 23:09:33 +01:00

400 lines
13 KiB
Org Mode

#+TITLE: Emacs init
#+STYLE: <link href="http://ryuslash.ninth.su/test2.css" rel="stylesheet">
#+OPTIONS: author:nil
#+STARTUP: showall
#+LINK: yoshi-theme http://ryuslash.org/projects/yoshi-theme.html
* gui
Remove the ~menu-bar~, ~tool-bar~ and ~scroll-bar~ from the UI since I
don't use them at all.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(menu-bar-mode -1)
(scroll-bar-mode -1)
(tool-bar-mode -1)
#+END_SRC
* load-path
Before doing anything else I should make sure that both the
directories ~/usr/local/emacs/share/emacs/site-lisp~ and
~/usr/share/emacs/site-list~ are included in =load-path=, along with
their subdirectories, but only if they haven't already been added
and exist. Place them at the end of =load-path= so they don't mess up
package precedence.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(eval-and-compile
(defun oni:path-init (dir)
"Add DIR to `load-path' and all its subdirectories, unless
DIR is already in `load-path'."
(unless (or (member dir load-path) (not (file-exists-p dir)))
(let ((default-directory dir))
(add-to-list 'load-path dir t)
(normal-top-level-add-subdirs-to-load-path))))
(oni:path-init "/usr/share/emacs/site-lisp")
(oni:path-init "/usr/local/emacs/share/emacs/site-lisp"))
#+END_SRC
Add my project [[yoshi-theme]] to =custom-theme-load-path= and load it.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(add-to-list 'custom-theme-load-path "~/projects/emacs/yoshi-theme/")
(load-theme 'yoshi t)
#+END_SRC
Add any other interesting paths to =load-path= and, if it exists,
load the ~loaddefs.el~ file from these directories.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(mapc #'(lambda (dir)
(add-to-list 'load-path dir)
(let ((loaddefs (concat dir "/loaddefs.el")))
(when (file-exists-p loaddefs)
(load loaddefs))))
'("~/projects/emacs/mode-icons" "~/.emacs.d/site-lisp"
"~/projects/emacs/pony-mode/src" "~/projects/emacs/php-mode"))
#+END_SRC
* y-or-n-p
Don't ask ~yes~ or ~no~, ask ~y~ or ~n~, I've never had an accidental ~y~ so
far.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defalias 'yes-or-no-p 'y-or-n-p)
#+END_SRC
* ibuffer
Use =ibuffer= instead of the default =list-buffers= because it has many
more features.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defalias 'list-buffers 'ibuffer)
#+END_SRC
* hippie-expand
Do the same with =hippie-expand= and =dabbrev-expand=.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defalias 'dabbrev-expand 'hippie-expand)
#+END_SRC
* eldoc
Don't show it when ~eldoc~ is running, I almost assume that it is
whenever I'm working in a mode that supports it anyway. This should
only execute once ~eldoc~ has been loaded.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(eval-after-load "eldoc" '(diminish 'eldoc-mode))
#+END_SRC
* emms
Use the standard EMMS configuration and add some MPD settings.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:emms-init ()
"Initialization function for EMMS."
(require 'emms-setup)
(require 'emms-player-mpd)
(emms-standard)
(add-to-list 'emms-info-functions 'emms-info-mpd)
(add-to-list 'emms-player-list 'emms-player-mpd)
(setq emms-player-mpd-server-name "localhost")
(setq emms-player-mpd-server-port "6600")
(setq emms-player-mpd-music-directory "/mnt/music/mp3"))
(eval-after-load "emms-source-file" '(oni:emms-init))
(setq emms-source-file-default-directory "/mnt/music/")
#+END_SRC
Add some keybindings for EMMS.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:emms-toggle-playing ()
"Toggle between playing/paused states."
(interactive)
(if (eq emms-player-playing-p nil)
(emms-start)
(emms-pause)))
(defun oni:start-emms ()
"Check to see if the function `emms' exists, if not call
`emms-player-mpd-connect' and assume that will have loaded it."
(interactive)
(unless (fboundp 'emms)
(emms-player-mpd-connect))
(emms))
(global-set-key (kbd "<XF86AudioNext>") 'emms-next)
(global-set-key (kbd "<XF86AudioPlay>") 'oni:emms-toggle-playing)
(global-set-key (kbd "<XF86AudioPrev>") 'emms-previous)
(global-set-key (kbd "<XF86AudioStop>") 'emms-stop)
(global-set-key (kbd "<XF86Tools>") 'oni:start-emms)
#+END_SRC
* flymake
Load ~flymake-cursor~ after loading ~flymake~, add Python and Go to
"allowed" files and add go error output to error patterns.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:flymake-init ()
"Initialization function for flymake."
(require 'flymake-cursor)
(add-to-list ; Make sure pyflakes is loaded
'flymake-allowed-file-name-masks ; for python files.
'("\\.py\\'" ext:flymake-pyflakes-init))
(add-to-list ; Error line repexp for go
'flymake-err-line-patterns ; compilation.
'("^\\([a-zA-Z0-9_]+\\.go\\):\\([0-9]+\\):\\(.*\\)$"
1 2 nil 3))
(add-to-list ; Go uses makefiles, makes
'flymake-allowed-file-name-masks ; flymaking 'easy'.
'("\\.go$" flymake-simple-make-init)))
(eval-after-load "flymake" '(oni:flymake-init))
#+END_SRC
Disable the GUI for flymake errors, add a bunch of pep8, flymake
and pyflakes messages to warning and info patterns, set the log
file to somewhere in my home directory and set logging level to 0.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq flymake-gui-warnings-enabled nil)
(setq flymake-info-line-regexp
(eval-when-compile
(regexp-opt
'("Invalid name"
"String statement has no effect"
"Missing docstring"
"Empty docstring"
"multiple imports on one line"
"expected 2 blank lines, found 1"
"expected 2 blank lines, found 0"
"TODO:"
"whitespace after '{'"
"whitespace before '}'"
"whitespace before ':'"
"whitespace after '('"
"whitespace before ')'"
"whitespace after '['"
"whitespace before ']'"
"the backslash is redundant between brackets"
"continuation line over-indented for visual indent"
"continuation line under-indented for visual indent"
"Too many statements"
"comparison to None should be"
"missing whitespace around operator"
"missing whitespace after ','"
"line too long"
"at least two spaces before inline comment"
"trailing whitespace"
"imported but unused"
"Unused import"
"too many blank lines"))))
(setq flymake-log-file-name (expand-file-name "~/.emacs.d/flymake.log"))
(setq flymake-log-level 0)
(setq flymake-warn-line-regexp
(eval-when-compile
(regexp-opt '("warning"
"Warning"
"redefinition of unused"
"Redefining built-in"
"Redefining name"
"Unused argument"
"Unused variable"
"Dangerous default value {} as argument"
"no newline at end of file"
"Access to a protected member"))))
#+END_SRC
* flycheck
After loading ~flycheck~ Remove the default python checkers and
replace them with my own, which tries both ~flake8~ and ~pylint~.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(eval-after-load "flycheck"
'(progn
(mapc (lambda (c) (delete c flycheck-checkers))
'(python-pylint python-pyflakes))))
#+END_SRC
* pretty-control-l-mode
Make the ~C-l~ look like a line of ~-~ up to =fill-column= or
=fci-rule-column= and remove the string displayed before the ~C-l~.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:pretty-control-l-function (win)
"Just make a string of either `fci-rule-column' or
`fill-column' length -1. Use the `-' character. WIN is ignored."
(make-string
(1- (if (boundp 'fci-rule-column)
fci-rule-column fill-column)) ?-))
(setq pp^L-^L-string-function 'oni:pretty-control-l-function)
#+END_SRC
Remove the string displayed before the ~C-l~.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq pp^L-^L-string-pre nil)
#+END_SRC
Enable =pretty-control-l-mode= at startup and whenever a new frame is
created.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(add-hook 'emacs-startup-hook 'pretty-control-l-mode)
(add-hook 'after-make-frame-functions
'(lambda (arg) (pretty-control-l-mode)))
#+END_SRC
* erc
Automatically join some channels when connecting to freenode.net.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq erc-autojoin-channels-alist
'(("freenode.net" "#ninthfloor" "#emacs")))
#+END_SRC
Don't show ~PART~ messages.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq erc-hide-list '("PART"))
#+END_SRC
Insert a timestamp every time a message comes in, print it on the
left and print the hour and minute parts of the time.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq erc-insert-timestamp-function 'erc-insert-timestamp-left)
(setq erc-timestamp-format "[%H:%M] ")
(setq erc-timestamp-only-if-changed-flag nil)
#+END_SRC
Set my nickname.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq erc-nick "ryuslash")
#+END_SRC
When starting ERC disable truncating lines, don't let ERC fill each
line and enable =visual-line-mode=.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:erc-mode-func ()
"Function for `erc-mode-hook'."
(erc-fill-mode -1)
(visual-line-mode)
(setq truncate-lines nil))
(add-hook 'erc-mode-hook 'oni:erc-mode-func)
#+END_SRC
* eshell
Add ~unison~ to the list of =eshell-visual-commands= because it
expects unbuffered input and eshell just doesn't give that.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(eval-after-load "em-term"
'(add-to-list 'eshell-visual-commands "unison"))
#+END_SRC
Don't let eshell highlight it's prompt, this way I can decide the
colors for it myself.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(setq eshell-highlight-prompt nil)
#+END_SRC
In the prompt:
- Show the exit status of the last program/command run represented
by a green ~+~ and a red ~-~ sign.
- Show the current hostname with the =mode-line-buffer-id= face.
- Show an abbreviation of the current directory (as seen in ~fish~)
using the =font-lock-string-face= face.
- If we're in a git repository, show the current branch with the
=font-lock-function-name-face= face.
- Show the status of priviledges in blue.
And set the =eshell-prompt-regexp= to
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:eshell-prompt-function ()
"Show a pretty shell prompt."
(let ((status (if (zerop eshell-last-command-status) ?+ ?-))
(hostname (shell-command-to-string "hostname"))
(dir (abbreviate-file-name (eshell/pwd)))
(branch
(shell-command-to-string
"git branch --contains HEAD 2>/dev/null | sed -e '/^[^*]/d'"))
(userstatus (if (zerop (user-uid)) ?# ?$)))
(concat
(propertize (char-to-string status)
'face `(:foreground ,(if (= status ?+)
"green"
"red")))
" "
(propertize (substring hostname 0 -1) 'face 'mode-line-buffer-id)
" "
(propertize (oni:shorten-dir dir) 'face 'font-lock-string-face)
" "
(when (not (string= branch ""))
(propertize
;; Cut off "* " and "\n"
(substring branch 2 -1)
'face 'font-lock-function-name-face))
" \n"
(propertize (char-to-string userstatus)
'face `(:foreground "blue"))
"> ")))
(setq eshell-prompt-function 'oni:eshell-prompt-function
eshell-prompt-regexp "^[#$]> ")
#+END_SRC
Don't truncate lines in eshell, wrap them.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:eshell-mode-func ()
"Function for `eshell-mode-hook'."
(setq truncate-lines nil))
(add-hook 'eshell-mode-hook 'oni:eshell-mode-func)
#+END_SRC
Bind the ~f8~ key to easily show eshell.
#+BEGIN_SRC emacs-lisp :tangle init2.el
(defun oni:raise-eshell ()
"Start or switch back to `eshell'.
Also change directories to current working directory."
(interactive)
(let ((dir (file-name-directory
(or (buffer-file-name) "~/")))
(hasfile (not (eq (buffer-file-name) nil))))
(eshell)
(if (and hasfile (eq eshell-process-list nil))
(progn
(eshell/cd dir)
(eshell-reset)))))
(global-set-key (kbd "<f8>") 'oni:raise-eshell)
#+END_SRC