Intro
YASnippet is a template system for Emacs. It allows you to type an abbreviation and automatically expand it into function templates. Bundled language templates include: C, C++, C#, Perl, Python, Ruby, SQL, LaTeX, HTML, CSS and more. The snippet syntax is inspired from TextMate's syntax, you can even import most TextMate templates to YASnippet. Watch a demo on YouTube.
Installation
Install the most recent version
Clone this repository somewhere
$ cd ~/.emacs.d/plugins
$ git clone --recursive https://github.com/capitaomorte/yasnippet
Add the following in your .emacs
file:
(add-to-list 'load-path
"~/.emacs.d/plugins/yasnippet")
(require 'yasnippet)
(yas-global-mode 1)
Add your own snippets to ~/.emacs.d/snippets
by placing files there or invoking yas-new-snippet
.
package-install
Install with In a recent emacs M-x list-packages
is the recommended way to list and install packages.
MELPA keeps a very recent snapshot of YASnippet, see http://melpa.milkbox.net/#installing.
Install with el-get
El-get is a nice way to get the most recent version, too. See https://github.com/dimitri/el-get for instructions.
yas-minor-mode
on a per-buffer basis
Use To use YASnippet as a non-global minor mode, replace (yas-global-mode 1)
with
(yas-reload-all)
to load the snippet tables. Then add a call to
(yas-minor-mode)
to the major-modes where you to enable YASnippet.
(add-hook 'prog-mode-hook #'yas-minor-mode)
Where are the snippets?
Yasnippet no longer bundles snippets directly, but it's very easy to get some!
If you git-cloned yasnippet with the --recursive
option you'll also
download "git submodules" and find two subdirs under the main tree.
-
snippets/
Points to yasnippet-snippets the snippet collection of AndreaCrotti.
The default configuraiton already points to this dir, so to use them, just make sure the submodule really was downloaded (i.e. there are some files under
snippets/
) -
yasmate/
Points to a github repo of the yasmate tool, which is dedicated to converting textmate bundles into yasnippet snippets.
To use these snippets you have to run the tool first, so see its doc), and then point the
yas-snippet-dirs
variable to the.../yasmate/snippets
subdir.If you have a working ruby environment, you can probably get lucky directly with
rake convert-bundles
.
Naturally, you can point yas-snippet-dirs
to good snippet collections out
there. If you have created snippets for a mode, or multiple modes,
consider creating a repository to host them, then tell users that it
should be added like this to yas-snippet-dirs
:
(setq yas-snippet-dirs
'("~/.emacs.d/snippets" ;; personal snippets
"/path/to/some/collection/" ;; foo-mode and bar-mode snippet collection
"/path/to/yasnippet/yasmate/snippets" ;; the yasmate collection
"/path/to/yasnippet/snippets" ;; the default collection
))
(yas-global-mode 1) ;; or M-x yas-reload-all if you've started YASnippet already.
Manual, issues etc
Please refer to the comprehensive documentation for full customisation and support. If you find a bug in the code or in the documentation, please report it on the GitHub issue tracker.
Important note regarding bug reporting
Your bug reports are very valuable.
The most important thing when reporting bugs is making sure that we have a way to reproduce the problem exactly like it happened to you.
To do this, we need to rule out interference from external factors like other Emacs extensions or your own customisations.
Here's an example report that "sandboxes" an Emacs session just for reproducing a bug.
$ emacs --version
Emacs 24.3
$ cd /tmp/
$ git clone https://github.com/capitaomorte/yasnippet.git yasnippet-bug
$ cd yasnippet-bug
$ git log -1 --oneline
6053db0 Closes #527: Unbreak case where yas-fallback-behaviour is a list
$ HOME=$PWD emacs -L # This "sandboxes" your emacs, melpa configuration, etc
(require 'yasnippet)
(yas-global-mode 1)
When I open a foo-mode file I can't expand foo-mode snippets!
OR
I can't get yasnippet to load because frankinbogen!
Using emacs -Q
or temporarily moving your .emacs
init file to the side
is another way to achieve good reproducibility.
Here's a another example of a bug report. It has everything needed for a successful analysis and speedy resolution.
Also, don't forget to state the Emacs version (use M-x emacs-version
) and
the yasnippet version you are using (if using the latest from github,
do git log -1
in the dir).
Any more info is welcome, but don't just paste a backtrace or an error message string you got, unless we ask for it.
There is also a YASnippet google group. I will keep the group open for reference and for discussion among users. Unfortunately I can't guarantee a timely response, so maybe it's better to create a github issue clearly marking your intent (user support/bug/feature request).
Finally, thank you very much for using YASnippet!