d52e545db3
Linefeeds should only move the cursor down if it's before the end of the scroll region. The "out of bounds" panic was triggered by linefeeds going off the bottom of the screen when the scroll region end was above the cursor. Note: https://vt100.net/docs/vt102-ug/chapter5.html "Characters added outside the scrolling region do not cause the screen to scroll." |
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| .github | ||
| assets/osx/Alacritty.app/Contents | ||
| copypasta | ||
| docs | ||
| font | ||
| res | ||
| scripts | ||
| snap | ||
| src | ||
| tests | ||
| .agignore | ||
| .gitignore | ||
| .travis.yml | ||
| Alacritty.desktop | ||
| alacritty.info | ||
| alacritty.yml | ||
| alacritty_macos.yml | ||
| build.rs | ||
| Cargo.lock | ||
| Cargo.toml | ||
| LICENSE-APACHE | ||
| Makefile | ||
| README.md | ||
| TASKS.md | ||
Alacritty
Alacritty is the fastest terminal emulator in existence. Using the GPU for rendering enables optimizations that simply aren't possible in other emulators. Alacritty currently supports macOS and Linux, and Windows support is planned before the 1.0 release.
About
Alacritty is focused on simplicity and performance. The performance goal means it should be faster than any other terminal emulator available. The simplicity goal means that it doesn't have features such as tabs or splits (which can be better provided by a window manager or terminal multiplexer) nor niceties like a GUI config editor.
The software is considered to be at an alpha level of readiness--there are missing features and bugs to be fixed, but it is already used by many as a daily driver.
Precompiled binaries will eventually be made available on supported platforms. This is minimally blocked on a stable config format. For now, Alacritty must be built from source.
Further information
- Announcing Alacritty, a GPU-Accelerated Terminal Emulator January 6, 2017
- A short talk about Alacritty at the Rust Meetup January 2017 (starts at 57:00)
Installation
Instructions are provided for macOS and many Linux variants to compile Alacritty from source. With the exception of Arch (which has a package in the AUR) and NixOS (at the moment in unstable, will be part of 17.09), please first read the prerequisites section, then find the section for your OS, and finally go to building and configuration.
Arch Linux
git clone https://aur.archlinux.org/alacritty-git.git
cd alacritty-git
makepkg -isr
Manual Installation
Prerequisites
-
Alacritty requires the most recent stable Rust compiler; it can be installed with
rustup.Note: DO NOT use the Homebrew Rust compiler on macOS (see FAQ for explanation).
Installing Rust compiler with rustup
-
Install
rustup.rs. -
Clone the source code:
git clone https://github.com/jwilm/alacritty.git cd alacritty -
Make sure you have the right Rust compiler installed. Run
rustup override set stable rustup update stable
Ubuntu
On Ubuntu, you need a few extra libraries to build Alacritty. Here's an apt
command that should install all of them. If something is still found to be
missing, please open an issue.
apt-get install cmake libfreetype6-dev libfontconfig1-dev xclip
Arch Linux
On Arch Linux, you need a few extra libraries to build Alacritty. Here's a
pacman command that should install all of them. If something is still found
to be missing, please open an issue.
pacman -S cmake freetype2 fontconfig pkg-config make xclip
Fedora
On Fedora, you need a few extra libraries to build Alacritty. Here's a dnf
command that should install all of them. If something is still found to be
missing, please open an issue.
dnf install cmake freetype-devel fontconfig-devel xclip
CentOS/RHEL 7
On CentOS/RHEL 7, you need a few extra libraries to build Alacritty. Here's a yum
command that should install all of them. If something is still found to be
missing, please open an issue.
yum install cmake freetype-devel fontconfig-devel xclip
openSUSE
On openSUSE, you need a few extra libraries to build Alacritty. Here's
a zypper command that should install all of them. If something is
still found to be missing, please open an issue.
zypper install cmake freetype-devel fontconfig-devel xclip
Slackware
Compiles out of the box for 14.2 For copy & paste support (middle mouse button) you need to install xclip https://slackbuilds.org/repository/14.2/misc/xclip/?search=xclip
Void Linux
On Void Linux, install following packages before compiling Alacritty:
xbps-install cmake freetype-devel freetype expat-devel fontconfig xclip
FreeBSD
On FreeBSD, you need a few extra libraries to build Alacritty. Here's a pkg
command that should install all of them. If something is still found to be
missing, please open an issue.
pkg install cmake freetype2 fontconfig xclip pkgconf
Solus
On Solus, you need a few extra libraries to build
Alacritty. Here's a eopkg command that should install all of them. If
something is still found to be missing, please open an issue.
sudo eopkg install fontconfig-devel
NixOS/Nixpkgs
The following command can be used to get a shell with all development dependencies on NixOS.
nix-shell -A alacritty '<nixpkgs>'
Gentoo
On Gentoo, there's a portage overlay available. Make sure layman is installed
and run:
sudo layman -a slyfox
Then, add x11-terms/alacritty ** to /etc/portage/package.accept_keywords and
emerge alacritty:
sudo emerge alacritty
It might be handy to mask all other packages provided in the slyfox overlay by
adding */*::slyfox to /etc/portage/package.mask and adding
x11-terms/alacritty::slyfox to /etc/portage/package.unmask.
Other
If you build Alacritty on another distribution, we would love some help filling in this section of the README.
Building
Once all the prerequisites are installed, compiling Alacritty should be easy:
cargo build --release
If all goes well, this should place a binary at target/release/alacritty.
BEFORE YOU RUN IT: Install the config file as described below; otherwise,
many things (such as arrow keys) will not work. If you're on macOS, you'll need
to change the monospace font family to something like Menlo.
Desktop Entry
Many linux distributions support desktop entries for adding applications to system menus. To install the desktop entry for Alacritty, run
sudo cp target/release/alacritty /usr/local/bin # or anywhere else in $PATH
cp Alacritty.desktop ~/.local/share/applications
To build an application for macOS, run
make app
cp -r target/release/osx/Alacritty.app /Applications/Alacritty.app
Configuration
Although it's possible the default configuration would work on your system,
you'll probably end up wanting to customize it anyhow. There is a default
alacritty.yml at the git repository root. Alacritty looks for the
configuration file as the following paths:
$XDG_CONFIG_HOME/alacritty/alacritty.yml$XDG_CONFIG_HOME/alacritty.yml$HOME/.config/alacritty/alacritty.yml$HOME/.alacritty.yml
If none of these paths are found then
$XDG_CONFIG_HOME/alacritty/alacritty.yml is created once alacritty is first
run. On most systems this often defaults to
$HOME/.config/alacritty/alacritty.yml.
Many configuration options will take effect immediately upon saving changes to
the config file. The only exception is the font and dimensions sections
which requires Alacritty to be restarted. For further explanation of the config
file, please consult the comments in the default config file.
Issues (known, unknown, feature requests, etc)
If you run into a problem with Alacritty, please file an issue. If you've got a
feature request, feel free to ask about it. Keep in mind that Alacritty is very
much not looking to be a feature-rich terminal emulator with all sorts of bells
and widgets. It's primarily a cross-platform, blazing fast tmux renderer that
Just Works.
FAQ
- proc-macro derive panicked during macOS build; what's wrong? There's an
issue with the Rust compiler from Homebrew. Please follow the instructions
and use
rustup. - Is it really the fastest terminal emulator? In the terminals I've benchmarked against, alacritty is either faster, WAY faster, or at least neutral. There are no benchmarks in which I've found Alacritty to be slower.
- macOS + tmux + vim is slow! I thought this was supposed to be fast! This
appears to be an issue outside of terminal emulators; either macOS has an IPC
performance issue, or either tmux or vim (or both) have a bug. This same issue
can be seen in
iTerm2andTerminal.app. I've found that if tmux is running on another machine which is connected to Alacritty via SSH, this issue disappears. Actual throughput and rendering performance are still better in Alacritty. - When will Windows support be available? When someone has time to work on it. Contributors would be welcomed :).
- My arrow keys don't work. It sounds like you deleted some key bindings from your config file. Please reference the default config file to restore them.
- Why doesn't it support scrollback? Alacritty's original purpose was to provide a better experience when using tmux which already handled scrollback. The scope of this project has since expanded, and scrollback will eventually be added.
IRC
Alacritty discussion can be found in #alacritty on freenode.
Wayland
Wayland support is available, but not everything works as expected. Many people
have found a better experience using XWayland which can be achieved launching
Alacritty with the WAYLAND_DISPLAY environment variable cleared:
env WAYLAND_DISPLAY= alacritty
If you're interested in seeing our Wayland support improve, please head over to the Wayland meta issue on the winit project to see how you may contribute.
License
Alacritty is released under the Apache License, Version 2.0.