177 lines
6 KiB
Org Mode
177 lines
6 KiB
Org Mode
#+TITLE: Emacs init
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#+STYLE: <link href="http://ryuslash.ninth.su/test2.css" rel="stylesheet">
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#+OPTIONS: author:nil
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#+STARTUP: showall
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#+LINK: yoshi-theme http://ryuslash.org/projects/yoshi-theme.html
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* Emacs init
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Before doing anything else I should make sure that both the
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directories ~/usr/local/emacs/share/emacs/site-lisp~ and
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~/usr/share/emacs/site-list~ are included in =load-path=, along with
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their subdirectories, but only if they haven't already been added
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and exist. Place them at the end of =load-path= so they don't mess up
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package precedence.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(eval-and-compile
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(defun oni:path-init (dir)
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"Add DIR to `load-path' and all its subdirectories, unless
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DIR is already in `load-path'."
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(unless (or (member dir load-path) (not (file-exists-p dir)))
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(let ((default-directory dir))
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(add-to-list 'load-path dir t)
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(normal-top-level-add-subdirs-to-load-path))))
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(oni:path-init "/usr/share/emacs/site-lisp")
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(oni:path-init "/usr/local/emacs/share/emacs/site-lisp"))
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#+END_SRC
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Add my project [[yoshi-theme]] to =custom-theme-load-path= and load it.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(add-to-list 'custom-theme-load-path "~/projects/emacs/yoshi-theme/")
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(load-theme 'yoshi t)
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#+END_SRC
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Remove the ~menu-bar~, ~tool-bar~ and ~scroll-bar~ from the UI since I
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don't use them at all.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(menu-bar-mode -1)
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(scroll-bar-mode -1)
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(tool-bar-mode -1)
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#+END_SRC
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Add any other interesting paths to =load-path= and, if it exists,
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load the ~loaddefs.el~ file from these directories.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(mapc #'(lambda (dir)
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(add-to-list 'load-path dir)
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(let ((loaddefs (concat dir "/loaddefs.el")))
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(when (file-exists-p loaddefs)
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(load loaddefs))))
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'("~/projects/emacs/mode-icons" "~/.emacs.d/site-lisp"
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"~/projects/emacs/pony-mode/src" "~/projects/emacs/php-mode"))
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#+END_SRC
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Don't ask ~yes~ or ~no~, ask ~y~ or ~n~, I've never had an accidental ~y~ so
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far.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(defalias 'yes-or-no-p 'y-or-n-p)
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#+END_SRC
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Use =ibuffer= instead of the default =list-buffers= because it has many
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more features.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(defalias 'list-buffers 'ibuffer)
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#+END_SRC
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Do the same with =hippie-expand= and =dabbrev-expand=.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(defalias 'dabbrev-expand 'hippie-expand)
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#+END_SRC
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Don't show it when ~eldoc~ is running, I almost assume that it is
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whenever I'm working in a mode that supports it anyway. This should
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only execute once ~eldoc~ has been loaded.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(eval-after-load "eldoc" '(diminish 'eldoc-mode))
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#+END_SRC
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** Eshell
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Add ~unison~ to the list of =eshell-visual-commands= because it
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expects unbuffered input and eshell just doesn't give that.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(eval-after-load "em-term"
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'(add-to-list 'eshell-visual-commands "unison"))
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#+END_SRC
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Don't let eshell highlight it's prompt, this way I can decide the
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colors for it myself.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(setq eshell-highlight-prompt nil)
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#+END_SRC
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In the prompt:
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- Show the exit status of the last program/command run represented
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by a green ~+~ and a red ~-~ sign.
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- Show the current hostname with the =mode-line-buffer-id= face.
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- Show an abbreviation of the current directory (as seen in ~fish~)
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using the =font-lock-string-face= face.
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- If we're in a git repository, show the current branch with the
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=font-lock-function-name-face= face.
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- Show the status of priviledges in blue.
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And set the =eshell-prompt-regexp= to
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(defun oni:eshell-prompt-function ()
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"Show a pretty shell prompt."
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(let ((status (if (zerop eshell-last-command-status) ?+ ?-))
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(hostname (shell-command-to-string "hostname"))
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(dir (abbreviate-file-name (eshell/pwd)))
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(branch
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(shell-command-to-string
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"git branch --contains HEAD 2>/dev/null | sed -e '/^[^*]/d'"))
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(userstatus (if (zerop (user-uid)) ?# ?$)))
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(concat
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(propertize (char-to-string status)
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'face `(:foreground ,(if (= status ?+)
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"green"
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"red")))
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" "
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(propertize (substring hostname 0 -1) 'face 'mode-line-buffer-id)
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" "
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(propertize (oni:shorten-dir dir) 'face 'font-lock-string-face)
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" "
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(when (not (string= branch ""))
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(propertize
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;; Cut off "* " and "\n"
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(substring branch 2 -1)
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'face 'font-lock-function-name-face))
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" \n"
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(propertize (char-to-string userstatus)
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'face `(:foreground "blue"))
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"> ")))
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(setq eshell-prompt-function 'oni:eshell-prompt-function
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eshell-prompt-regexp "^[#$]> ")
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#+END_SRC
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Don't truncate lines in eshell, wrap them.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(defun oni:eshell-mode-func ()
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"Function for `eshell-mode-hook'."
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(setq truncate-lines nil))
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(add-hook 'eshell-mode-hook 'oni:eshell-mode-func)
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#+END_SRC
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Bind the ~f8~ key to easily show eshell.
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#+BEGIN_SRC emacs-lisp :tangle init2.el
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(defun oni:raise-eshell ()
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"Start or switch back to `eshell'.
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Also change directories to current working directory."
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(interactive)
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(let ((dir (file-name-directory
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(or (buffer-file-name) "~/")))
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(hasfile (not (eq (buffer-file-name) nil))))
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(eshell)
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(if (and hasfile (eq eshell-process-list nil))
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(progn
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(eshell/cd dir)
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(eshell-reset)))))
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(global-set-key (kbd "<f8>") 'oni:raise-eshell)
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#+END_SRC
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