Prelude is an Emacs distribution that aims to enhance the default Emacs experience. Prelude alters a lot of the default settings, bundles a plethora of additional packages and adds its own core library to the mix. The final product offers an easy to use Emacs configuration for Emacs newcomers and lots of additional power for Emacs power users.
Prelude is compatible ONLY with GNU Emacs 24.x. In general you're advised to always run Prelude with the latest Emacs - currently 24.3.
Table of Contents
- Fast Forward
- Installing Emacs 24
- Installation
- Updating Prelude
- Enabling additional modules
- Running
- Getting to know Prelude
- Automatic package installation
- Caveats & Pitfalls
- Share the knowledge
- Known issues
- Support
- Contributors
- Bugs & Improvements
Assuming you're using an Unix-like OS (*BSD, GNU/Linux, OS X, Solaris,
etc), you already have Emacs 24 installed, as well as git & curl you
can skip the whole manual and just type in your favorite shell the
following command:
curl -L http://git.io/epre | shYou can now power up your Emacs, sit back and enjoy Prelude, forgetting about the rest of this manual.
There are two environment variables you can use to control the source repository and the installation directory. To change the installation directory:
export PRELUDE_INSTALL_DIR="$HOME/.emacs.d" && curl -L https://github.com/bbatsov/prelude/raw/master/utils/installer.sh | shTo change the source repository:
export PRELUDE_URL="https://github.com/yourname/prelude.git" && curl -L https://github.com/bbatsov/prelude/raw/master/utils/installer.sh | shNote that the installer will back up any existing .emacs file or
.emacs.d since it will unpack Prelude's code in .emacs.d. If
you're doing a manual install make sure you don't have a .emacs file
or back up your existing .emacs.d directory manually.
Don't forget to adjust your prelude-modules.el file once the installation is done.
By default most of the modules that ship with Prelude are not loaded.
Obviously to use the Emacs Prelude you have to install Emacs 24 first. Have a look at the WikEmacs articles on installing Emacs.
You can install Emacs Prelude via the command line with either curl or
wget. Naturally git is also required.
If you're using curl type the following command:
curl -L https://github.com/bbatsov/prelude/raw/master/utils/installer.sh | shIf you're using wget type:
wget --no-check-certificate https://github.com/bbatsov/prelude/raw/master/utils/installer.sh -O - | shgit clone git://github.com/bbatsov/prelude.git path/to/local/repo
ln -s path/to/local/repo ~/.emacs.d
cd ~/.emacs.dYou'd do well to replace ~/.emacs.d with the value of
user-emacs-directory for your OS. You can check the value by doing
C-h v user-emacs-directory inside Emacs.
The update procedure is fairly straightforward and consists of 3 steps:
Just run M-x package-list-packages RET U x.
cd path/to/prelude/installation
git pullThe path/to/prelude/installation is usually ~/.emacs.d (at least
on Unix systems).
It's generally a good idea to stop Emacs after you do the update. The next time Prelude starts it will install any new dependencies (if there are such).
Simply run M-x prelude-update from Emacs itself and restart Emacs afterwards.
By default most of the modules that ship with Prelude are not loaded. For more information on the functionality provided by these modules visit the docs.
;;; Uncomment the modules you'd like to use and restart Prelude afterwards
(require 'prelude-c)
;; (require 'prelude-clojure)
;; (require 'prelude-coffee)
;; (require 'prelude-common-lisp)
;; (require 'prelude-css)
(require 'prelude-emacs-lisp)
(require 'prelude-erc)
;; (require 'prelude-erlang)
;; (require 'prelude-haskell)
(require 'prelude-js)
;; (require 'prelude-latex)
(require 'prelude-lisp)
;; (require 'prelude-markdown)
;; (require 'prelude-mediawiki)
(require 'prelude-org)
(require 'prelude-perl)
;; (require 'prelude-python)
;; (require 'prelude-ruby)
;; (require 'prelude-scala)
(require 'prelude-scheme)
;; (require 'prelude-scss)
;; (require 'prelude-web)
(require 'prelude-xml)You'll need to adjust your prelude-modules.el file once the
installation is done. If you are doing a manual install then you first
need to copy the prelude-modules.el available in the sample
directory to the root of path/to/prelude/installation and then
adjust that one.
After you've uncommented a module you should either restart Emacs or evaluate the module
require expression with C-x C-e.
Nothing fancy here. Just start Emacs as usual. Personally I run Emacs in daemon mode:
emacs --daemonAfterwards I connect to the server with either a terminal or a GUI client like this:
emacsclient -t
emacsclient -cYou'd probably do well to put a few aliases in your .zshrc (or
.bashrc):
alias e='emacsclient -t'
alias ec='emacsclient -c'
alias vim='emacsclient -t'
alias vi='emacsclient -t'The last two aliases are helpful if you're used to editing files from
the command line using vi(m).
Certainly the best way to understand how Prelude enhances the default
Emacs experience is to peruse Prelude's source code (which is
obviously written in Emacs Lisp). Understanding the code is not
necessary of course. Prelude includes a prelude-mode minor Emacs mode
which collects some of the additional functionality added by
Prelude. It also adds an additional keymap that binds many of those
extensions to keybindings.
| Keybinding | Description |
|---|---|
| C-M-h | Kill the previous word(backward-kill-word). (as in Bash/Zsh) |
| C-x \ | align-regexp |
| C-+ | Increase font size(text-scale-increase). |
| C-- | Decrease font size(text-scale-decrease). |
| C-x O | Go back to previous window (the inverse of other-window (C-x o)). |
| C-^ | Join two lines into one(prelude-top-join-line). |
| C-x p | Start proced (manage processes from Emacs; works only in Linux). |
| C-x m | Start eshell. |
| C-x M-m | Start your default shell. |
| C-x C-m | Alias for M-x. |
| C-h A | Run apropos (search in all Emacs symbols). |
| M-/ | Run hippie-expand (a replacement for the default dabbrev-expand). |
| C-x C-b | Open ibuffer (a replacement for the default buffer-list). |
| F11 | Make the window full screen. |
| F12 | Toggle the Emacs menu bar. |
| C-x g | Open Magit's status buffer. |
| C-= | Run expand-region (incremental text selection). |
| C-a | Run prelude-move-beginning-of-line. Read this for details. |
| Keybinding | Description |
|---|---|
| C-c o | Open the currently visited file with an external program. |
| C-c i | Search for a symbol, only for buffers that contain code |
| C-c g | Search in Google for the thing under point (or an interactive query). |
| C-c G | Search in GitHub for the thing under point (or an interactive query). |
| C-c y | Search in YouTube for the thing under point (or an interactive query). |
| C-S-RET or Super-o | Insert an empty line above the current line and indent it properly. |
| S-RET or M-o | Insert an empty line and indent it properly (as in most IDEs). |
| C-S-up or M-S-up | Move the current line or region up. |
| C-S-down or M-S-down | Move the current line or region down. |
| C-c n | Fix indentation in buffer and strip whitespace. |
| C-c f | Open recently visited file. |
| C-M-\ | Indent region (if selected) or the entire buffer. |
| C-c u | Open URL in your default browser. |
| C-c e | Eval a bit of Emacs Lisp code and replace it with its result. |
| C-c s | Swap two active windows. |
| C-c d | Duplicate the current line (or region). |
| C-c M-d | Duplicate and comment the current line (or region). |
| C-c r | Rename the currently visited file and buffer. |
| C-c t | Open a terminal emulator (ansi-term). |
| C-c k | Kill all open buffers except the one you're currently in. |
| C-c h | Open Helm (available if you've enabled the prelude-helm module). |
| C-c + | Increment integer at point. |
| C-c - | Decrement integer at point. |
| Super-r | Recent files |
| Super-x | Expand region |
| Super-j | Join lines |
| Super-k | Kill whole line |
| Super-m m | Magit status |
| Super-m l | Magit log |
| Super-m f | Magit file log |
| Super-m b | Magit blame mode |
Prelude does not mess by default with the standard mapping of Command (to Super) and Option (to Meta).
If you want to swap them add this to your personal config:
(setq mac-command-modifier 'meta)
(setq mac-option-modifier 'super)You can also temporarily swap them with C-c w (M-x prelude-swap-meta-and-super).
Here's a list of functionality provided by Projectile:
| Keybinding | Description |
|---|---|
| C-c p f | Display a list of all files in the project. With a prefix argument it will clear the cache first. |
| C-c p d | Display a list of all directories in the project. With a prefix argument it will clear the cache first. |
| C-c p T | Display a list of all test files(specs, features, etc) in the project. |
| C-c p g | Run grep on the files in the project. |
| C-c p b | Display a list of all project buffers currently open. |
| C-c p o | Runs multi-occur on all project buffers currently open. |
| C-c p r | Runs interactive query-replace on all files in the projects. |
| C-c p i | Invalidates the project cache (if existing). |
| C-c p R | Regenerates the projects TAGS file. |
| C-c p k | Kills all project buffers. |
| C-c p D | Opens the root of the project in dired. |
| C-c p e | Shows a list of recently visited project files. |
| C-c p a | Runs ack on the project. Requires the presence of ack-and-a-half. |
| C-c p c | Runs a standard compilation command for your type of project. |
| C-c p p | Runs a standard test command for your type of project. |
| C-c p z | Adds the currently visited to the cache. |
| C-c p s | Display a list of known projects you can switch to. |
Prelude adds some extra keybindings:
| Keybinding | Command |
|---|---|
| Super-f | Find file in project |
| Super-d | Find directory in project |
| Super-g | Run grep on project |
| Super-p | Switch projects |
If you ever forget any of Projectile's keybindings just do a:
C-c p C-h
Key-chords are available only when the prelude-key-chord module has been enabled.
| Keybinding | Description |
|---|---|
| jj | Jump to the beginning of a word(ace-jump-word-mode) |
| jk | Jump to a character(ace-jump-char-mode) |
| jl | Jump to the beginning of a line(ace-jump-line-mode) |
| JJ | Jump back to previous buffer(prelude-switch-to-previous-buffer) |
| uu | View edits as a tree(undo-tree-visualize) |
| xx | Executed extended command(execute-extended-command) |
| yy | Browse the kill ring(browse-kill-ring) |
In some cases you may not want to have a key-chord that is defined by prelude,
in which case you can disable the binding in your personal.el file by setting
its command to nil. For example, to disable the jj key-chord add the
following line:
(key-chord-define-global "jj" nil)If you're an evil-mode user you'll probably do well to disable key-chord-mode altogether:
(key-chord-mode -1)The default Prelude installation comes with a bare minimum of
functionality. It will however install add-ons for various programming
languages and frameworks on demand. For instance - if you try to open
a .clj file clojure-mode, cider and Prelude's enhanced Lisp
configuration will be installed automatically for you.
You can, of course, install anything you wish manually as well.
Emacs 24 ships with a new theming facility that effectively renders
the old color-theme package obsolete. Emacs 24 provides a dozen of
built-in themes you can use out-of-the-box by invoking the M-x load-theme command.
Zenburn is the default color theme in Prelude, but you can change it at your discretion. Why Zenburn? I (and lots of hackers around the world) find it pretty neat for some reason. Personally I find the default theme pretty tiresome for the eyes, that's why I took that "controversial" decision to replace it. You can, of course, easily go back to the default (or select another theme entirely).
To disable Zenburn just put in your personal config the following line:
(disable-theme 'zenburn)Or you can use another theme altogether by adding something like:
(load-theme 'solarized-dark t)P.S. Solarized is not available by default - you'll have to
install it from MELPA first (M-x package-install RET solarized-theme).
Fork the official Prelude repo and add your own touch to it. You're advised to avoid changing stuff outside of the personal folder to avoid having to deal with git merge conflicts in the future.
If you'd like to add some auto installation of packages in your personal config use the following code:
(prelude-require-packages '(some-package some-other-package))If you require just a single package you can also use:
(prelude-require-package 'some-package)Sometimes you might want to load code before Prelude has started loading. Prelude will automatically preload all
Emacs Lisp files in your personal/preload directory. Note that at this point you can't using anything from
Prelude, except a few variables like prelude-dir, etc (since nothing is yet loaded).
Although whitespace-mode is awesome some people might find it too
intrusive. You can disable it in your
personal config with the following bit of code:
(setq prelude-whitespace nil)If you like whitespace-mode but prefer it to not automatically
cleanup your file on save, you can disable that behavior by setting
prelude-clean-whitespace-on-save to nil in your config file with:
(setq prelude-clean-whitespace-on-save nil)The prelude-clean-whitespace-on-save setting can also be set on a per-file or directory basis by using a file variable or a .dir-locals.el file.
If you're not fond of spellchecking on the fly:
(setq prelude-flyspell nil)Generally it's a good idea to do a package update before running updating Prelude, since the latest Prelude code might depend on newer versions of the bundled packages than you would currently have installed.
If you're doing manual Prelude updates you should always do a package update first.
M-x package-list-packages RET U x
That's not necessary if you're using M-x prelude-update, since it
will automatically update the installed packages.
Prelude makes heavy use of the flyspell-mode package for spell
checking of various things. The proper operation of flyspell depends
on the presence of the aspell program and an en dictionary on your
system. You can install aspell and the dictionary on OS X with
homebrew like this:
brew install aspell --with-lang=enOn Linux distros - just use your distro's package manager.
If your Emacs looks considerably uglier in a terminal (compared to the
GUI version) try adding this to your .bashrc or .zshrc:
export TERM=xterm-256colorSource the .bashrc file and start Emacs again.
If you get some http connection error related to the MELPA repo
just do a manual M-x package-refresh-contents and restart Emacs
afterwards.
This is not a bug - it's a feature! I firmly believe that the one true way to use Emacs is by using it the way it was intended to be used (as far as navigation is concerned at least). That's why I've disabled all movement commands with arrows (and keys like page up, page down, etc) - to prevent you from being tempted to use them.
If you'd like to be able to use the arrow keys (but still be reminded of the alternatives) put this in your personal config:
(setq guru-warn-only t)To disable guru-mode completely add the following snippet to your
personal Emacs config:
(setq prelude-guru nil)Prelude overrides C-a to behave as described
here. If
you don't like that simply add this to your personal config:
(global-set-key [remap move-beginning-of-line]
'move-beginning-of-line)Prelude swaps the default ido flex matching with the more powerful
ido-flx.
The sorting algorithm flx uses is more complex, but yields better results.
On slower machines, it may be necessary to lower flx-ido-threshhold to
ensure a smooth experience.
(setq flx-ido-threshhold 1000)You can always disable the improved sorting algorithm all together like this:
(flx-ido-mode -1)While everything in Prelude should work fine in Windows, I test it only with Linux & OSX, so there are Windows related problems from time to time. This situation will probably improve over time.
EmacsWiki collects useful resources for working with GNU Emacs. Please, take the time to peruse and improve them as you accumulate knowledge about Emacs. Prelude makes this especially easy, since it bundles
Check out the project's issue list a list of unresolved issues. By the way - feel free to fix any of them and send me a pull request. :-)
Support is available via the Prelude Google Group emacs-prelude@googlegroups.com.
Here's a list of all the people who have contributed to the development of Emacs Prelude.
Bug reports and suggestions for improvements are always welcome. GitHub pull requests are even better! :-)
Cheers,
Bozhidar