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README.asciidoc
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README.asciidoc
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= kitty - A terminal emulator
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:toc:
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:toc-placement!:
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image::https://travis-ci.org/kovidgoyal/kitty.svg?branch=master[Build status, link=https://travis-ci.org/kovidgoyal/kitty]
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Major features:
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* Uses OpenGL+FreeType for rendering, does not depend on any GUI
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toolkits.
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* Supports tiling multiple terminal windows side by side in different
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layouts without needing to use an extra program like tmux
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* Supports all modern terminal features: unicode, true-color, mouse
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protocol, focus tracking, bracketed paste and so on.
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* Easily hackable (UI layer written in python, inner loops in C for
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speed). Less than ten thousand lines of code.
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* Rendering of text is done in an actual character grid, so the common
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problems with most Terminals when using wide characters/complex scripts
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do not occur. The downside is that scripts with complex glyph layout,
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such as Arabic do not render well.
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toc::[]
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== Installation
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kitty is designed to run from source, for easy hackability. Make sure
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the following dependencies are installed first:
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* python >= 3.5
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* glew >= 2.0
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* glfw-dev >= 3.2
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* freetype
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* fontconfig
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* gcc (required for building, clang should also work, but it is not tested)
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* pkg-config (required for building)
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Install kitty with:
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....
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git clone https://github.com/kovidgoyal/kitty && cd kitty
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....
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Now build the C parts of kitty with the following command:
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....
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python3 setup.py build
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....
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You can run kitty, as:
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....
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python3 /path/to/kitty/folder
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....
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== Design philosophy
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kitty is designed for power keyboard users. To that end all its controls
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work with the keyboard (although it fully supports mouse interactions as
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well). It's configuration is a simple, human editable, single file for
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easy reproducability (I like to store config files in source control).
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The code in kitty is designed to be simple, modular and hackable. It is
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written in a mix of C (for performance sensitive parts) and Python (for
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easy hackability of the UI). It does not depend on any large and complex
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UI toolkit, using only OpenGL+FreeType for rendering everything.
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Finally, kitty is designed from the ground up to support all modern
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terminal features, such as unicode, true color, bold/italic fonts, text
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formatting, etc. It even extends existing text formatting escape codes,
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to add support for features not available elsewhere, such as colored and
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styled (curly) underlines. One of the design goals of kitty is to be
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easily extensible so that new features can be added in the future with
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relatively less effort.
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== Tabs and Windows
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kitty is capable of running multiple programs organized into tabs and
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windows. The top level of organization is the _Tab_. Each tab consists
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of one or more windows. The windows can be arranged in multiple
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different layouts, like windows are organized in a tiling window
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manager. The keyboard controls (which are all customizable) for tabs and
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windows are:
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[cols=",",options="header",]
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|======================
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|Action |Shortcut
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|New tab |`new_tab`
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|Close tab |`close_tab`
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|======================
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== Configuration
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kitty is highly customizable, everything from keyboard shortcuts, to
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painting frames-per-second. See the heavily commented
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link:kitty/kitty.conf[default config file]. By default kitty looks for a
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config file in the OS config directory (usually
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`~/.config/kitty/kitty.conf` on linux) but you can pass a specific path
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via the `--config` option.
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== Startup Sessions
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You can control the tabs, window layout, working directory, startup
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programs, etc. by creating a "session" file and using the `--session`
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command line flag. For example:
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....
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# Set the window layout for the current tab
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layout tall
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# Set the working directory for the current tab
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cd ~
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# Create a window and run the specified command in it
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launch zsh
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launch vim
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launch irssi --profile x
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# Create a new tab (the part after new_tab is the optional tab name which will
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# be displayed in the tab bar, if ommitted, the title of the active window will
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# be used instead)
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new_tab my tab
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cd ~/somewhere
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# Set the layouts allowed in this tab
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enabled_layouts tall, stack
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layout stack
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launch zsh
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# Make the current window the active (focused) window
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focus
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launch emacs
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....
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== Resources on terminal behavior
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http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
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https://en.wikipedia.org/wiki/C0_and_C1_control_codes
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http://vt100.net/
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