Emacs: hooking a custom extension to a cc-mode - emacs

For my c (c++) files, I added this reference to a cc-mode to my .emacs file:
(setq c-default-style "stroustrup"
c-basic-offset 4)
I would like to use the same for a custom extension ".dec." I tried to naively adjust this SO question doing
(defun my-decaf-mode ()
(when (and (stringp buffer-file-name)
(string-match "\\.dec\\'" buffer-file-name))
(setq c-default-style "stroustrup")
(c-basic-offset 4)) )
(add-hook 'find-file-hook 'my-decaf-mode)
which didn't work (I wrote a few lines in C; the support I would get giving the file a .c extension was not there). I also tried the actual customization type as in
(setq c-default-style "stroustrup"
c-basic-offset 4)) )
How could I get this done?

This answer assumes that the function my-decaf-mode does exactly what the original poster wants, and that the only thing needed is to associate *.dec extension files with c-mode and then call the function my-decaf-mode when the major-mode c-mode is activated in a buffer:
(add-to-list 'auto-mode-alist '("\\.dec\\'" . c-mode))
(add-hook 'c-mode-hook 'my-decaf-mode)

Related

How to highlight tab characters for files from specific project in Emacs

I have this code to highlight tab characters and want to disable them using project-specifics macro:
(require 'highlight-chars)
(make-variable-buffer-local 'prevent-highlight-tabs)
(setq highlight-chars-disable '(term-mode erc-mode fundamental-mode))
(setq-default prevent-highlight-tabs nil)
(add-hook 'font-lock-mode-hook
(lambda()
(message "lock")
(when (and (null (memql major-mode highlight-chars-disable))
(not prevent-highlight-tabs))
(message "%s" prevent-highlight-tabs)
(hc-highlight-tabs))))
(custom-set-faces '(hc-tab ((t (:background "red")))))
and project-specifics is a macro that define add find-file-hook and dired-after-readin-hook from this question
(project-specifics "projects/test"
(message "specific")
(setq prevent-highlight-tabs t)
(setq indent-tabs-mode t))
What I wanted to do is disable red tabs (I want them because in most projects I want only spaces, and want to see tabs) for files in project/test, but I have a problem because the code from font-lock-mode-hook is executing before project-specifics (find-file-hook), and prevent-highlight-tabs is always nil in font-lock-mode-hook. Why is that, and how to fix it?
I suggest that you place your settings in .dir-locals.el as described in Per-Directory Local Variables.
What you are doing seems convoluted.
And it is partly undefined (here) - e.g., what is the major mode highlight-chars-disable? That is not defined in library highlight-chars.el, and it doesn't sound like something that would be a good candidate for a major mode.
See the Commentary of library highlight-chars.el for suggestions.
Something like this, perhaps (and you would put property prevent-highlight-tabs on any major-mode symbols you like:
(add-hook 'font-lock-mode-hook
(lambda () (unless (get major-mode 'prevent-highlight-tabs)
(hc-highlight-tabs))))
Or something like this (from the Commentary):
(add-hook 'change-major-mode-hook
(lambda ()
(add-hook 'font-lock-mode-hook 'hc-highlight-tabs)))
(add-hook 'after-change-major-mode-hook
(lambda ()
(when (eq major-mode 'THE-MODE)
(remove-hook 'font-lock-mode-hook 'hc-highlight-tabs)
(hc-dont-highlight-tabs)))
'APPEND)

Indentation of groovy style method parameters in emacs

I am using emacs with groovy electric mode (installed as outlined here). The relevant parts (I think) of my .emacs file are given at the end of this question.
The current behaviour I am getting with indenting, as I type, is:
def someObject = new Something(
param1
Everything is how I would like it at this point, but as soon as I type the ':' character, it becomes:
def someObject = new Something(
param1:
I want the param/value pairs (and any that follow) to remain indented one level, as before, e.g.:
def someObject = new Something(
param1: val1,
param2: val2
)
.emacs excerpt:
(electric-indent-mode t)
(setq-default tab-width 4)
(setq-default indent-tabs-mode nil)
(setq indent-line-function 'insert-tab)
(setq tabify nil)
(setq-default c-basic-offset 4)
(delete-selection-mode 1)
(set-default-font "-apple-Bitstream_Vera_Sans_Mono-medium-normal-normal-*-*-*-*-*-m-0-iso10646-1")
(setq load-path (cons "~/.emacs.d/" load-path))
(add-to-list 'custom-theme-load-path "~/.emacs.d/themes/")
(setq whitespace-action '(auto-cleanup)) ;; automatically clean up bad whitespace
(setq whitespace-style '(trailing space-before-tab indentation empty space-after-tab)) ;; only show bad whitespace
;;; delete trailing whitespace
(add-hook 'before-save-hook 'delete-trailing-whitespace)
;;; turn on syntax highlighting
(global-font-lock-mode 1)
;;; use groovy-mode when file ends in .groovy or has #!/bin/groovy at start
(autoload 'groovy-mode "groovy-mode" "Major mode for editing Groovy code." t)
(add-to-list 'auto-mode-alist '("\\.groovy\\'" . groovy-mode))
(add-to-list 'interpreter-mode-alist '("groovy" . groovy-mode))
;;; make Groovy mode electric by default.
(add-hook 'groovy-mode-hook
(lambda ()
(require 'groovy-electric)
(groovy-electric-mode)))
Edit: regarding #ataylor 's suggestion below, I have tried both:
(add-hook 'groovy-mode-hook
'(lambda ()
(require 'groovy-electric)
(groovy-electric-mode)))
(add-hook 'groovy-mode-hook '(c-set-offset 'label 4))
and
(add-hook 'groovy-mode-hook
'(lambda ()
(require 'groovy-electric)
(groovy-electric-mode)
(c-set-offset 'label 4)))
neither of which work as I want. Is this the correct spot?
Groovy mode is treating these types of parameters as labels, like case statement labels and the rarely used feature inherited from Java that allows break statements to specify a target.
You can override the indentation by adding this to your hook:
(add-hook 'groovy-mode-hook
(lambda ()
(c-set-offset 'label 4)))

major-mode hook configuration affects other buffers

Let me start by saying I'm very new to emacs.
I'm attempting to create customizations for major-modes. While my settings are functioning correctly, I'm observing that when I open a new buffer, that buffers major-mode customization is being applied to other buffers of a different type.
For instance, if I open a file named 'Makefile', makefile-mode is used and my customizations are applied. If I then open another file such as 'test.c', c-mode is used but customizations from makefile-mode are merged with customizations from c-mode.
The relevant portions of my .emacs file can be seen below:
(defun c-mode-settings ()
(c-set-style "bsd")
(set-buffer-file-coding-system 'utf-8-unix)
(show-paren-mode 1)
(setq c-basic-offset 4)
(setq tab-width 4)
(setq indent-tabs-mode nil)
(setq c-tab-always-indent t)
(setq require-final-newline t)
)
(defun makefile-mode-settings ()
(setq whitespace-style '(tabs spaces space-mark tab-mark face lines-tail))
(whitespace-mode t)
(show-paren-mode 1)
(setq tab-width 4)
(setq require-final-newline t)
)
(add-hook 'c-mode-hook 'c-mode-settings)
(add-hook 'makefile-mode-hook 'makefile-mode-settings)
How can I keep these mode hooks from affecting other buffers in different modes?
Thanks!
Andrew
You need to take into account, that some variables are becoming local to buffer when set, while some are global. Usually they have corresponding comment in their description (use C-h v var-name to get this description.
In some cases, you can force that any variable become local to buffer, using the
(set (make-local-variable 'var-name) var-value)
but you need to be careful with this.

Emacs: Best-practice for lazy loading modes in .emacs?

Is there a best practice around lazily loading modes when encountering a relevant file extension?
At this point I have roughly 25 different Emacs modes installed, and startup has become slow. For example, although it's great to have clojure-mode at the ready, I rarely use it, and I want to avoid loading it at all unless I open a file with extension .clj. Such a "lazy require" functionality seems like the right way do mode configuration in general..
I found nothing online, so I've taken a crack at it myself.
Instead of:
(require 'clojure-mode)
(require 'tpl-mode)
I have this:
(defun lazy-require (ext mode)
(add-hook
'find-file-hook
`(lambda ()
(when (and (stringp buffer-file-name)
(string-match (concat "\\." ,ext "\\'") buffer-file-name))
(require (quote ,mode))
(,mode)))))
(lazy-require "soy" 'soy-mode)
(lazy-require "tpl" 'tpl-mode)
This seems to work (I'm an elisp newbie so comments are welcome!), but I'm unnerved about finding nothing written about this topic online. Is this a reasonable approach?
The facility you want is called autoloading. The clojure-mode source file, clojure-mode.el, includes a comment for how to arrange this:
;; Add these lines to your .emacs:
;; (autoload 'clojure-mode "clojure-mode" "A major mode for Clojure" t)
;; (add-to-list 'auto-mode-alist '("\\.clj$" . clojure-mode))
This is one way,
(provide 'my-slime)
(eval-after-load "slime"
'(progn
(setq slime-lisp-implementations
'((sbcl ("/usr/bin/sbcl"))
(clisp ("/usr/bin/clisp")))
common-lisp-hyperspec-root "/home/sujoy/documents/hyperspec/")
(slime-setup '(slime-asdf
slime-autodoc
slime-editing-commands
slime-fancy-inspector
slime-fontifying-fu
slime-fuzzy
slime-indentation
slime-mdot-fu
slime-package-fu
slime-references
slime-repl
slime-sbcl-exts
slime-scratch
slime-xref-browser))
(slime-autodoc-mode)
(setq slime-complete-symbol*-fancy t)
(setq slime-complete-symbol-function 'slime-fuzzy-complete-symbol)
(add-hook 'lisp-mode-hook (lambda () (slime-mode t)))))
(require 'slime)
along with,
;; slime mode
(autoload 'slime "my-slime" "Slime mode." t)
(autoload 'slime-connect "my-slime" "Slime mode." t)

What's in your .emacs?

Locked. This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions.
I've switched computers a few times recently, and somewhere along the way I lost my .emacs. I'm trying to build it up again, but while I'm at it, I thought I'd pick up other good configurations that other people use.
So, if you use Emacs, what's in your .emacs?
Mine is pretty barren right now, containing only:
Global font-lock-mode! (global-font-lock-mode 1)
My personal preferences with respect to indentation, tabs, and spaces.
Use cperl-mode instead of perl-mode.
A shortcut for compilation.
What do you think is useful?
Use the ultimate dotfiles site. Add your '.emacs' here. Read the '.emacs' of others.
My favorite snippet. The ultimate in Emacs eye candy:
;; real lisp hackers use the lambda character
;; courtesy of stefan monnier on c.l.l
(defun sm-lambda-mode-hook ()
(font-lock-add-keywords
nil `(("\\<lambda\\>"
(0 (progn (compose-region (match-beginning 0) (match-end 0)
,(make-char 'greek-iso8859-7 107))
nil))))))
(add-hook 'emacs-lisp-mode-hook 'sm-lambda-mode-hook)
(add-hook 'lisp-interactive-mode-hook 'sm-lamba-mode-hook)
(add-hook 'scheme-mode-hook 'sm-lambda-mode-hook)
So you see i.e. the following when editing lisp/scheme:
(global-set-key "^Cr" '(λ () (interactive) (revert-buffer t t nil)))
I have this to change yes or no prompt to y or n prompts:
(fset 'yes-or-no-p 'y-or-n-p)
I have these to start Emacs without so much "fanfare" which I got from this question.
(setq inhibit-startup-echo-area-message t)
(setq inhibit-startup-message t)
And Steve Yegge's function to rename a file that you're editing along with its corresponding buffer:
(defun rename-file-and-buffer (new-name)
"Renames both current buffer and file it's visiting to NEW-NAME."
(interactive "sNew name: ")
(let ((name (buffer-name))
(filename (buffer-file-name)))
(if (not filename)
(message "Buffer '%s' is not visiting a file!" name)
(if (get-buffer new-name)
(message "A buffer named '%s' already exists!" new-name)
(progn
(rename-file name new-name 1)
(rename-buffer new-name)
(set-visited-file-name new-name)
(set-buffer-modified-p nil))))))
One thing that can prove very useful: Before it gets too big, try to split it into multiple files for various tasks: My .emacs just sets my load-path and the loads a bunch of files - I've got all my mode-specific settings in mode-configs.el, keybindings in keys.el, et cetera
My .emacs is only 127 lines, here are the most useful little snippets:
;; keep backup files neatly out of the way in .~/
(setq backup-directory-alist '(("." . ".~")))
This makes the *~ files which I find clutter up the directory go into a special directory, in this case .~
;; uniquify changes conflicting buffer names from file<2> etc
(require 'uniquify)
(setq uniquify-buffer-name-style 'reverse)
(setq uniquify-separator "/")
(setq uniquify-after-kill-buffer-p t) ; rename after killing uniquified
(setq uniquify-ignore-buffers-re "^\\*") ; don't muck with special buffers
This sets up uniquify which changes those ugly file<2> etc. buffer names you get when multiple files have the same name into a much neater unambiguous name using as much of the whole path of the file as it has to.
That's about it... the rest is pretty standard stuff that I'm sure everyone knows about.
This is not the whole kit and kaboodle, but it is some of the more useful snippets I've gathered:
(defadvice show-paren-function (after show-matching-paren-offscreen
activate)
"If the matching paren is offscreen, show the matching line in the
echo area. Has no effect if the character before point is not of
the syntax class ')'."
(interactive)
(let ((matching-text nil))
;; Only call `blink-matching-open' if the character before point
;; is a close parentheses type character. Otherwise, there's not
;; really any point, and `blink-matching-open' would just echo
;; "Mismatched parentheses", which gets really annoying.
(if (char-equal (char-syntax (char-before (point))) ?\))
(setq matching-text (blink-matching-open)))
(if (not (null matching-text))
(message matching-text))))
;;;;;;;;;;;;;;;
;; UTF-8
;;;;;;;;;;;;;;;;;;;;
;; set up unicode
(prefer-coding-system 'utf-8)
(set-default-coding-systems 'utf-8)
(set-terminal-coding-system 'utf-8)
(set-keyboard-coding-system 'utf-8)
;; This from a japanese individual. I hope it works.
(setq default-buffer-file-coding-system 'utf-8)
;; From Emacs wiki
(setq x-select-request-type '(UTF8_STRING COMPOUND_TEXT TEXT STRING))
;; Wwindows clipboard is UTF-16LE
(set-clipboard-coding-system 'utf-16le-dos)
(defun jonnay-timestamp ()
"Spit out the current time"
(interactive)
(insert (format-time-string "%Y-%m-%d")))
(defun jonnay-sign ()
"spit out my name, email and the current time"
(interactive)
(insert "-- Jonathan Arkell (jonathana#criticalmass.com)")
(jonnay-timestamp))
;; Cygwin requires some seriosu setting up to work the way i likes it
(message "Setting up Cygwin...")
(let* ((cygwin-root "c:")
(cygwin-bin (concat cygwin-root "/bin"))
(gambit-bin "/usr/local/Gambit-C/4.0b22/bin/")
(snow-bin "/usr/local/snow/current/bin")
(mysql-bin "/wamp/bin/mysql/mysql5.0.51a/bin/"))
(setenv "PATH" (concat cygwin-bin ";" ;
snow-bin ";"
gambit-bin ";"
mysql-bin ";"
".;")
(getenv "PATH"))
(setq exec-path (cons cygwin-bin exec-path)))
(setq shell-file-name "bash")
(setq explicit-shell-file-name "bash")
(require 'cygwin-mount)
(cygwin-mount-activate)
(message "Setting up Cygwin...Done")
; Completion isn't perfect, but close
(defun my-shell-setup ()
"For Cygwin bash under Emacs 20+"
(setq comint-scroll-show-maximum-output 'this)
(setq comint-completion-addsuffix t)
(setq comint-eol-on-send t)
(setq w32-quote-process-args ?\")
(make-variable-buffer-local 'comint-completion-addsuffix))
(setq shell-mode-hook 'my-shell-setup)
(add-hook 'emacs-startup-hook 'cygwin-shell)
; Change how home key works
(global-set-key [home] 'beginning-or-indentation)
(substitute-key-definition 'beginning-of-line 'beginning-or-indentation global-map)
(defun yank-and-down ()
"Yank the text and go down a line."
(interactive)
(yank)
(exchange-point-and-mark)
(next-line))
(defun kill-syntax (&optional arg)
"Kill ARG sets of syntax characters after point."
(interactive "p")
(let ((arg (or arg 1))
(inc (if (and arg (< arg 0)) 1 -1))
(opoint (point)))
(while (not (= arg 0))
(if (> arg 0)
(skip-syntax-forward (string (char-syntax (char-after))))
(skip-syntax-backward (string (char-syntax (char-before)))))
(setq arg (+ arg inc)))
(kill-region opoint (point))))
(defun kill-syntax-backward (&optional arg)
"Kill ARG sets of syntax characters preceding point."
(interactive "p")
(kill-syntax (- 0 (or arg 1))))
(global-set-key [(control shift y)] 'yank-and-down)
(global-set-key [(shift backspace)] 'kill-syntax-backward)
(global-set-key [(shift delete)] 'kill-syntax)
(defun insert-file-name (arg filename)
"Insert name of file FILENAME into buffer after point.
Set mark after the inserted text.
Prefixed with \\[universal-argument], expand the file name to
its fully canocalized path.
See `expand-file-name'."
;; Based on insert-file in Emacs -- ashawley 2008-09-26
(interactive "*P\nfInsert file name: ")
(if arg
(insert (expand-file-name filename))
(insert filename)))
(defun kill-ring-save-filename ()
"Copy the current filename to the kill ring"
(interactive)
(kill-new (buffer-file-name)))
(defun insert-file-name ()
"Insert the name of the current file."
(interactive)
(insert (buffer-file-name)))
(defun insert-directory-name ()
"Insert the name of the current directory"
(interactive)
(insert (file-name-directory (buffer-file-name))))
(defun jonnay-toggle-debug ()
"Toggle debugging by toggling icicles, and debug on error"
(interactive)
(toggle-debug-on-error)
(icicle-mode))
(defvar programming-modes
'(emacs-lisp-mode scheme-mode lisp-mode c-mode c++-mode
objc-mode latex-mode plain-tex-mode java-mode
php-mode css-mode js2-mode nxml-mode nxhtml-mode)
"List of modes related to programming")
; Text-mate style indenting
(defadvice yank (after indent-region activate)
(if (member major-mode programming-modes)
(indent-region (region-beginning) (region-end) nil)))
I have a lot of others that have already been mentioned, but these are absolutely necessary in my opinion:
(transient-mark-mode 1) ; makes the region visible
(line-number-mode 1) ; makes the line number show up
(column-number-mode 1) ; makes the column number show up
You can look here: http://www.dotemacs.de/
And my .emacs is pretty long to put it here as well, so it will make the answer not too readable. Anyway, if you wish I can sent it to you.
Also I would recomend you to read this: http://steve.yegge.googlepages.com/my-dot-emacs-file
Here are some key mappings that I've become dependent upon:
(global-set-key [(control \,)] 'goto-line)
(global-set-key [(control \.)] 'call-last-kbd-macro)
(global-set-key [(control tab)] 'indent-region)
(global-set-key [(control j)] 'join-line)
(global-set-key [f1] 'man)
(global-set-key [f2] 'igrep-find)
(global-set-key [f3] 'isearch-forward)
(global-set-key [f4] 'next-error)
(global-set-key [f5] 'gdb)
(global-set-key [f6] 'compile)
(global-set-key [f7] 'recompile)
(global-set-key [f8] 'shell)
(global-set-key [f9] 'find-next-matching-tag)
(global-set-key [f11] 'list-buffers)
(global-set-key [f12] 'shell)
Some other miscellaneous stuff, mostly for C++ development:
;; Use C++ mode for .h files (instead of plain-old C mode)
(setq auto-mode-alist (cons '("\\.h$" . c++-mode) auto-mode-alist))
;; Use python-mode for SCons files
(setq auto-mode-alist (cons '("SConstruct" . python-mode) auto-mode-alist))
(setq auto-mode-alist (cons '("SConscript" . python-mode) auto-mode-alist))
;; Parse CppUnit failure reports in compilation-mode
(require 'compile)
(setq compilation-error-regexp-alist
(cons '("\\(!!!FAILURES!!!\nTest Results:\nRun:[^\n]*\n\n\n\\)?\\([0-9]+\\)) test: \\([^(]+\\)(F) line: \\([0-9]+\\) \\([^ \n]+\\)" 5 4)
compilation-error-regexp-alist))
;; Enable cmake-mode from http://www.cmake.org/Wiki/CMake_Emacs_mode_patch_for_comment_formatting
(require 'cmake-mode)
(setq auto-mode-alist
(append '(("CMakeLists\\.txt\\'" . cmake-mode)
("\\.cmake\\'" . cmake-mode))
auto-mode-alist))
;; "M-x reload-buffer" will revert-buffer without requiring confirmation
(defun reload-buffer ()
"revert-buffer without confirmation"
(interactive)
(revert-buffer t t))
To refresh the webpage you're editing from within Emacs
(defun moz-connect()
(interactive)
(make-comint "moz-buffer" (cons "127.0.0.1" "4242"))
(global-set-key "\C-x\C-g" '(lambda ()
(interactive)
(save-buffer)
(comint-send-string "*moz-buffer*" "this.BrowserReload()\n"))))
Used in combination with http://hyperstruct.net/projects/mozlab
You can find my configuration (both in html & in tar'ed archive) on my site. It contains lot of settings for different modes
This block is the most important for me:
(setq locale-coding-system 'utf-8)
(set-terminal-coding-system 'utf-8)
(set-keyboard-coding-system 'utf-8)
(set-selection-coding-system 'utf-8)
(prefer-coding-system 'utf-8)
I've never been clear on the difference between those, though. Cargo cult, I guess...
I try to keep my .emacs organized. The configuration will always be a work in progress, but I'm starting to be satisfied with the overall structure.
All stuff is under ~/.elisp, a directory that is under version control (I use git, if that's of interest). ~/.emacs simply points to ~/.elisp/dotemacs which itself just loads ~/.elisp/cfg/init. That file in turn imports various configuration files via require. This means that the configuration files need to behave like modes: they import stuff they depend on and they provide themselves at the end of the file, e.g. (provide 'my-ibuffer-cfg). I prefix all identifiers that are defined in my configuration with my-.
I organize the configuration in respect to modes/subjects/tasks, not by their technical implications, e.g. I don't have a separate config file in which all keybindings or faces are defined.
My init.el defines the following hook to make sure that Emacs recompiles configuration files whenever saved (compiled Elisp loads a lot faster but I don't want to do this step manually):
;; byte compile config file if changed
(add-hook 'after-save-hook
'(lambda ()
(when (string-match
(concat (expand-file-name "~/.elisp/cfg/") ".*\.el$")
buffer-file-name)
(byte-compile-file buffer-file-name))))
This is the directory structure for ~/.elisp:
~/.elisp/todo.org: Org-mode file in which I keep track of stuff that still needs to be done (+ wish list items).
~/.elisp/dotemacs: Symlink target for ~/.emacs, loads ~/.elisp/cfg/init.
~/.elisp/cfg: My own configuration files.
~/.elisp/modes: Modes that consist only of a single file.
~/.elisp/packages: Sophisticated modes with lisp, documentation and probably resource files.
I use GNU Emacs, that version does not have real support for packages. Therefore I organize them manually, usually like this:
~/.elisp/packages/foobar-0.1.3 is the root directory for the package. Subdirectory lisp holds all the lisp files and info is where the documentation goes. ~/.elisp/packages/foobar is a symlink that points to the currently used version of the package so that I don't need to change my configuration files when I update something. For some packages I keep an ~/.elisp/packages/foobar.installation file around in which I keep notes about the installation process. For performance reasons I compile all elisp files in newly installed packages, should this not be the case by default.
Here's a couple of my own stuff:
Inserts date in ISO 8601 format:
(defun insertdate ()
(interactive)
(insert (format-time-string "%Y-%m-%d")))
(global-set-key [(f5)] 'insertdate)
For C++ programmers, creates a class skeleton (class's name will be the same as the file name without extension):
(defun createclass ()
(interactive)
(setq classname (file-name-sans-extension (file-name-nondirectory buffer-file-name)))
(insert
"/**
* " classname".h
*
* Author: Your Mom
* Modified: " (format-time-string "%Y-%m-%d") "
* Licence: GNU GPL
*/
#ifndef "(upcase classname)"
#define "(upcase classname)"
class " classname "
{
public:
"classname"();
~"classname"();
private:
};
#endif
"))
Automatically create closing parentheses:
(setq skeleton-pair t)
(setq skeleton-pair-on-word t)
(global-set-key (kbd "[") 'skeleton-pair-insert-maybe)
(global-set-key (kbd "(") 'skeleton-pair-insert-maybe)
(global-set-key (kbd "{") 'skeleton-pair-insert-maybe)
(global-set-key (kbd "<") 'skeleton-pair-insert-maybe)
i use paredit for easy (e)lisp handling and ido-mode minibuffer completions.
It's hard to answer this question, because everyone uses Emacs for very different purposes.
Further more, a better practice may be to KISS your dotemacs. Since the Easy Customization Interface is widely supported amongst Emacs' modes, you should store all your customization in your custom-file (which may be a separate place in your dotemacs), and for the dotemacs, put in it only load path settings, package requires, hooks, and key bindings. Once you start using Emacs Starter Kit, a whole useful bunch of settings may removed from your dotemacs, too.
See EmacsWiki's DotEmacs category. It provides lots of links to pages addressing this question.
(put 'erase-buffer 'disabled nil)
(put 'downcase-region 'disabled nil)
(set-variable 'visible-bell t)
(set-variable 'tool-bar-mode nil)
(set-variable 'menu-bar-mode nil)
(setq load-path (cons (expand-file-name "/usr/share/doc/git-core/contrib/emacs") load-path))
(require 'vc-git)
(when (featurep 'vc-git) (add-to-list 'vc-handled-backends 'git))
(require 'git)
(autoload 'git-blame-mode "git-blame"
"Minor mode for incremental blame for Git." t)
I set up some handy shortcuts to web pages and searches using webjump
(require 'webjump)
(global-set-key [f2] 'webjump)
(setq webjump-sites
(append '(
("Reddit Search" .
[simple-query "www.reddit.com" "http://www.reddit.com/search?q=" ""])
("Google Image Search" .
[simple-query "images.google.com" "images.google.com/images?hl=en&q=" ""])
("Flickr Search" .
[simple-query "www.flickr.com" "flickr.com/search/?q=" ""])
("Astar algorithm" .
"http://www.heyes-jones.com/astar")
)
webjump-sample-sites))
Blog post about how this works here
http://justinsboringpage.blogspot.com/2009/02/search-reddit-flickr-and-google-from.html
Also I recommend these:
(setq visible-bell t) ; no beeping
(setq transient-mark-mode t) ; visually show region
(setq line-number-mode t) ; show line numbers
(setq global-font-lock-mode 1) ; everything should use fonts
(setq font-lock-maximum-decoration t)
Also I get rid of some of the superfluous gui stuff
(if (fboundp 'scroll-bar-mode) (scroll-bar-mode -1))
(if (fboundp 'tool-bar-mode) (tool-bar-mode -1))
(if (fboundp 'menu-bar-mode) (menu-bar-mode -1)))
One line to amend the load path
One line to load my init library
One line to load my emacs init files
Of course, the "emacs init files" are quite numerous, one per specific thing, loaded in a deterministic order.
emacs-starter-kit as a base, then I've added.. vimpulse.el, whitespace.el, yasnippet, textmate.el and newsticker.el.
In my ~/.emacs.d/$USERNAME.el (dbr.el) file:
(add-to-list 'load-path (concat dotfiles-dir "/vendor/"))
;; Snippets
(add-to-list 'load-path "~/.emacs.d/vendor/yasnippet/")
(require 'yasnippet)
(yas/initialize)
(yas/load-directory "~/.emacs.d/vendor/yasnippet/snippets")
;; TextMate module
(require 'textmate)
(textmate-mode 'on)
;; Whitespace module
(require 'whitespace)
(add-hook 'ruby-mode-hook 'whitespace-mode)
(add-hook 'python-mode-hook 'whitespace-mode)
;; Misc
(flyspell-mode 'on)
(setq viper-mode t)
(require 'viper)
(require 'vimpulse)
;; IM
(eval-after-load 'rcirc '(require 'rcirc-color))
(setq rcirc-default-nick "_dbr")
(setq rcirc-default-user-name "_dbr")
(setq rcirc-default-user-full-name "_dbr")
(require 'jabber)
;;; Google Talk account
(custom-set-variables
'(jabber-connection-type (quote ssl))
'(jabber-network-server "talk.google.com")
'(jabber-port 5223)
'(jabber-server "mysite.tld")
'(jabber-username "myusername"))
;; Theme
(color-theme-zenburn)
;; Key bindings
(global-set-key (kbd "M-z") 'undo)
(global-set-key (kbd "M-s") 'save-buffer)
(global-set-key (kbd "M-S-z") 'redo)
Always save my config in svn http://my-trac.assembla.com/ez-conf/browser/emacs.d
After reading this, I figured it would be good to have a simple site just for the best .emacs modifications. Feel free to post and vote on them here:
http://dotemacs.slinkset.com/
https://b7j0c.org/stuff/dotemacs.html
I'm new to emacs, in my .emacs file there are
indentation configuration
color theme
php mode, coffee mode and js2 mode
ido mode
FWIW, my .emacs is here:
http://svn.red-bean.com/repos/kfogel/trunk/.emacs
lots of stuff: https://github.com/tavisrudd/emacs.d
el-get has made managing it and dependencies a lot easier: https://github.com/tavisrudd/emacs.d/blob/master/dss-init-el-get.el
For Scala coders
;; Load the ensime lisp code... http://github.com/aemoncannon/ensime
(add-to-list 'load-path "ENSIME_ROOT/elisp/")
(require 'ensime)
;; This step causes the ensime-mode to be started whenever ;; scala-mode is started for a buffer. You may have to customize this step ;; if you're not using the standard scala mode.
(add-hook 'scala-mode-hook 'ensime-scala-mode-hook)
;; MINI HOWTO: ;; Open .scala file. M-x ensime (once per project)
My emacs configuration has grown up pretty big over the years and I have lot of useful stuff for me there but if I have two functions it probably would have been those ones.
Define C-x UP and C-x DOWN to move the current line or down keeping the cursor at the right place :
;Down/UP the current line
(global-set-key '[(control x) (up)] 'my-up-line)
(global-set-key '[(control x) (down)] 'my-down-line)
(defun my-down-line()
(interactive)
(let ((col (current-column)))
(forward-line 1)
(transpose-lines 1)
(forward-line -1)
(forward-char col)
)
)
(defun my-up-line()
(interactive)
(let ((col (current-column)))
(transpose-lines 1)
(forward-line -2)
(forward-char col)
)
)