Ctags parses source code to produce an index file, mapping the names of symbols, like functions, classes, and variables, to the locations where they are defined. This index is used by editors like Vim and Emacs to enable features like 'go to definition'.
Universal Ctags (https://ctags.io/) is an active fork of the venerable Exuberant Ctags (http://ctags.sourceforge.net/, last release 2009), that adds additional features, including support for more languages.
This is the snap package of universal-ctags (https://snapcraft.io/universal-ctags), which installs the application binary on any Linux distribution.
Usage
When installed, this snap provides executable universal-ctags
,
and alias ctags
.
ctags [options] [target files or directories]
eg. ctags -R .
(-R
or --recurse
to recursively search directories),
or ctags -R --languages=python --exclude=.git src/
.
This snap does not install the man pages. See the online universal-ctags man pages at http://docs.ctags.io/en/latest/man/ctags.1.html for options and usage details.
Limitations
Compared to universal-ctags installed using apt, or compiled from source, this snap has some limitations, introduced by snap security restrictions.
Source files cannot be scanned if they are:
~/.src
.Lower-level hidden directories, eg. ~/proj/.src
, can be scanned.
Ctags usually reads config from the following directories:
~/.ctags.d/
is read as expected.ctags.d
is not read by default,
but the '--options' arg can be used to read from it..ctags.d
cannot be read.Configuration in other places, specified using --options
or --options-maybe
, will not be read if they are outside the
user's HOME, or in a top-level hidden directory.
Tag files written using '-f' options or similar may not be outside
the user's $HOME directory, nor in a top-level hidden file or directory.
You may be able to work around this by using -f -
and redirecting stdout
to the required location.
The universal-ctags man pages are not installed. But you can see them online at http://docs.ctags.io/en/latest/man/ctags.1.html
The 'etags' executable alias (which defaults to Emacs style tags files)
is not installed. Use ctags --output-format=etags
or ctags -e
instead.
If these or other issues cause you problems, please file an issue at https://github.com/universal-ctags/ctags-snap/issues.
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snapd can be installed from Manjaro’s Add/Remove Software application (Pamac), found in the launch menu. From the application, search for snapd, select the result, and click Apply.
Alternatively, snapd can be installed from the command line:
sudo pacman -S snapd
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap
and /snap
:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install universal-ctags, simply use the following command:
sudo snap install universal-ctags
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.