349 lines
15 KiB
Markdown
349 lines
15 KiB
Markdown
.tmux
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=====
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Self-contained, pretty and versatile `.tmux.conf` configuration file.
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Installation
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------------
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Requirements:
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- tmux **`>= 2.1`** (soon `>= 2.4`) running inside Linux, Mac, OpenBSD, Cygwin
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or WSL
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- awk, perl and sed
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- outside of tmux, `$TERM` must be set to `xterm-256color`
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To install, run the following from your terminal: (you may want to backup your
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existing `~/.tmux.conf` first)
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```
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$ cd
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$ git clone https://github.com/gpakosz/.tmux.git
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$ ln -s -f .tmux/.tmux.conf
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$ cp .tmux/.tmux.conf.local .
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```
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💡 You can clone the repository anywhere you want, provided you create the
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proper `~/.tmux.conf` symlink and you copy the `.tmux.conf.local` sample file in
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your home directory:
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```
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$ git clone https://github.com/gpakosz/.tmux.git /path/to/oh-my-tmux
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$ ln -s -f /path/to/oh-my-tmux/.tmux.conf ~/.tmux.conf
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$ cp /path/to/oh-my-tmux/.tmux.conf.local ~/.tmux.conf.local
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```
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Then proceed to [customize] your `~/.tmux.conf.local` copy.
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[customize]: #configuration
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If you're a Vim user, setting the `$EDITOR` environment variable to `vim` will
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enable and further customize the vi-style key bindings (see tmux manual).
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If you're new to tmux, I recommend you read [tmux 2: Productive Mouse-Free
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Development][bhtmux2] by [@bphogan].
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[bhtmux2]: https://pragprog.com/book/bhtmux2/tmux-2
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[@bphogan]: https://twitter.com/bphogan
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Troubleshooting
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---------------
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- **I'm running tmux `HEAD` and things don't work properly. What should I do?**
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Please open an issue describing what doesn't work with upcoming tmux. I'll do
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my best to address it.
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- **Status line is broken and/or gets duplicated at the bottom of the screen.
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What gives?**
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This particularly happens on Linux when the distribution provides a version
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of glib that received Unicode 9.0 upgrades (glib `>= 2.50.1`) while providing
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a version of glibc that didn't (glibc `< 2.26`). You may also configure
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`LC_CTYPE` to use an `UTF-8` locale. Typically VTE based terminal emulators
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rely on glib's `g_unichar_iswide()` function while tmux relies on glibc's
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`wcwidth()` function. When these two functions disagree, display gets messed
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up.
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This can also happen on macOS when using iTerm2 and "Use Unicode version 9
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character widths" is enabled in `Preferences... > Profiles > Text`
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For that reason, the default `~/.tmux.conf.local` file stopped using Unicode
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characters for which width changed in between Unicode 8.0 and 9.0 standards,
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as well as Emojis.
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- **I installed Powerline and/or (patched) fonts but can't see Powerline
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symbols.**
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First, you don't need to install Powerline. You only need fonts patched with
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Powerline symbols or the standalone `PowerlineSymbols.otf` font. Then make
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sure your `~/.tmux.conf.local` copy uses the right code points for
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`tmux_conf_theme_left_separator_XXX` values.
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- **I'm using Bash On Windows (WSL), colors and Powerline look are broken.**
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There is currently a [bug][1681] in the new console powering Bash On Windows
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preventing text attributes (bold, underscore, ...) to combine properly with
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colors. The workaround is to search your `~/.tmux.conf.local` copy and
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replace attributes with `'none'`.
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Also, until Window's console replaces its GDI based render with a DirectWrite
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one, Powerline symbols will be broken.
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The alternative is to use the [Mintty terminal for WSL][wsltty].
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[1681]: https://github.com/Microsoft/BashOnWindows/issues/1681
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[wsltty]: https://github.com/mintty/wsltty
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Features
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--------
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- `C-a` acts as secondary prefix, while keeping default `C-b` prefix
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- visual theme inspired by [Powerline][]
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- [maximize any pane to a new window with `<prefix> +`][maximize-pane]
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- SSH/Mosh aware username and hostname status line information
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- mouse mode toggle with `<prefix> m`
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- automatic usage of [`reattach-to-user-namespace`][reattach-to-user-namespace]
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if available
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- laptop battery status line information
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- uptime status line information
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- optional highlight of focused pane (tmux `>= 2.1`)
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- configurable new windows and panes behavior (optionally retain current path)
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- SSH/Mosh aware split pane (reconnects to remote server)
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- copy to OS clipboard (needs [`reattach-to-user-namespace`][reattach-to-user-namespace]
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on macOS, `xsel` or `xclip` on Linux)
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- support for 4-digit hexadecimal Unicode characters (requires `perl` or Bash >= 4.1.2)
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- [Facebook PathPicker][] integration if available
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- [Urlview][] integration if available
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[Powerline]: https://github.com/Lokaltog/powerline
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[maximize-pane]: http://pempek.net/articles/2013/04/14/maximizing-tmux-pane-new-window/
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[reattach-to-user-namespace]: https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard
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[Facebook PathPicker]: https://facebook.github.io/PathPicker/
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[Urlview]: https://packages.debian.org/stable/misc/urlview
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The "maximize any pane to a new window with `<prefix> +`" feature is different
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from builtin `resize-pane -Z` as it allows you to further split a maximized
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pane. It's also more flexible by allowing you to maximize a pane to a new
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window, then change window, then go back and the pane is still in maximized
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state in its own window. You can then minimize a pane by using `<prefix> +`
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either from the source window or the maximized window.
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Mouse mode allows you to set the active window, set the active pane, resize
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panes and automatically switches to copy-mode to select text.
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Bindings
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--------
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tmux may be controlled from an attached client by using a key combination of a
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prefix key, followed by a command key. This configuration uses `C-a` as a
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secondary prefix while keeping `C-b` as the default prefix. In the following
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list of key bindings:
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- `<prefix>` means you have to either hit <kbd>Ctrl</kbd> + <kbd>a</kbd> or <kbd>Ctrl</kbd> + <kbd>b</kbd>
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- `<prefix> c` means you have to hit <kbd>Ctrl</kbd> + <kbd>a</kbd> or <kbd>Ctrl</kbd> + <kbd>b</kbd> followed by <kbd>c</kbd>
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- `<prefix> C-c` means you have to hit <kbd>Ctrl</kbd> + <kbd>a</kbd> or <kbd>Ctrl</kbd> + <kbd>b</kbd> followed by <kbd>Ctrl</kbd> + <kbd>c</kbd>
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This configuration uses the following bindings:
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- `<prefix> e` opens `~/.tmux.conf.local` with the editor defined by the
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`$EDITOR` environment variable (defaults to `vim` when empty)
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- `<prefix> r` reloads the configuration
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- `C-l` clears both the screen and the tmux history
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- `<prefix> C-c` creates a new session
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- `<prefix> C-f` lets you switch to another session by name
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- `<prefix> C-h` and `<prefix> C-l` let you navigate windows (default
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`<prefix> n` and `<prefix> p` are unbound)
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- `<prefix> Tab` brings you to the last active window
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- `<prefix> -` splits the current pane vertically
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- `<prefix> _` splits the current pane horizontally
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- `<prefix> h`, `<prefix> j`, `<prefix> k` and `<prefix> l` let you navigate
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panes ala Vim
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- `<prefix> H`, `<prefix> J`, `<prefix> K`, `<prefix> L` let you resize panes
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- `<prefix> <` and `<prefix> >` let you swap panes
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- `<prefix> +` maximizes the current pane to a new window
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- `<prefix> m` toggles mouse mode on or off
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- `<prefix> U` launches Urlview (if available)
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- `<prefix> F` launches Facebook PathPicker (if available)
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- `<prefix> Enter` enters copy-mode
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- `<prefix> b` lists the paste-buffers
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- `<prefix> p` pastes from the top paste-buffer
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- `<prefix> P` lets you choose the paste-buffer to paste from
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Additionally, `copy-mode-vi` matches [my own Vim configuration][]
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[my own Vim configuration]: https://github.com/gpakosz/.vim.git
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Bindings for `copy-mode-vi`:
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- `v` begins selection / visual mode
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- `C-v` toggles between blockwise visual mode and visual mode
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- `H` jumps to the start of line
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- `L` jumps to the end of line
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- `y` copies the selection to the top paste-buffer
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- `Escape` cancels the current operation
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Configuration
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-------------
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While this configuration tries to bring sane default settings, you may want to
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customize it further to your needs. Instead of altering the `~/.tmux.conf` file
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and diverging from upstream, the proper way is to edit the `~/.tmux.conf.local`
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file.
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Please refer to the sample `.tmux.conf.local` file to know more about variables
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you can adjust to alter different behaviors. Pressing `<prefix> e` will open
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`~/.tmux.conf.local` with the editor defined by the `$EDITOR` environment
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variable (defaults to `vim` when empty).
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### Enabling the Powerline look
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Powerline originated as a status-line plugin for Vim. Its popular eye-catching
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look is based on the use of special symbols: <img width="80" alt="Powerline Symbols" style="vertical-align: middle;" src="https://cloud.githubusercontent.com/assets/553208/10687156/1b76dda6-796b-11e5-83a1-1634337c4571.png" />
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To make use of these symbols, there are several options:
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- use a font that already bundles those: this is e.g. the case of the
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[2.030R-ro/1.050R-it version][source code pro] of the Source Code Pro font
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- use a [pre-patched font][powerline patched fonts]
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- use your preferred font along with the [Powerline font][powerline font] (that
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only contains the Powerline symbols): [this highly depends on your operating
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system and your terminal emulator][terminal support], for instance here's a
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screenshot of iTerm2 configured to use `PowerlineSymbols.otf`
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[source code pro]: https://github.com/adobe-fonts/source-code-pro/releases/tag/2.030R-ro/1.050R-it
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[powerline patched fonts]: https://github.com/powerline/fonts
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[powerline font]: https://github.com/powerline/powerline/raw/develop/font/PowerlineSymbols.otf
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[terminal support]: http://powerline.readthedocs.io/en/master/usage.html#usage-terminal-emulators
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[Powerline manual]: http://powerline.readthedocs.org/en/latest/installation.html#fonts-installation
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Please see the [Powerline manual] for further details.
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Then edit your `~/.tmux.conf.local` copy (with `<prefix> e`) and adjust the
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following variables:
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```
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tmux_conf_theme_left_separator_main='\uE0B0'
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tmux_conf_theme_left_separator_sub='\uE0B1'
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tmux_conf_theme_right_separator_main='\uE0B2'
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tmux_conf_theme_right_separator_sub='\uE0B3'
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```
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### Configuring the status line
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Contrary to the first iterations of this configuration, by now you have total
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control on the content and order of `status-left` and `status-right`.
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Edit your `~/.tmux.conf.local` copy (`<prefix> e`) and adjust the
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`tmux_conf_theme_status_left` and `tmux_conf_theme_status_right` variables to
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your own preferences.
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This configuration supports the following builtin variables:
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- `#{battery_bar}`: horizontal battery charge bar
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- `#{battery_percentage}`: battery percentage
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- `#{battery_status}`: is battery charging or discharging?
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- `#{battery_vbar}`: vertical battery charge bar
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- `#{circled_session_name}`: circled session number, up to 20
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- `#{hostname}`: SSH/Mosh aware hostname information
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- `#{hostname_ssh}`: SSH/Mosh aware hostname information, blank when not
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connected to a remote server through SSH/Mosh
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- `#{loadavg}`: load average
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- `#{pairing}`: is session attached to more than one client?
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- `#{prefix}`: is prefix being depressed?
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- `#{root}`: is current user root?
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- `#{synchronized}`: are the panes synchronized?
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- `#{uptime_y}`: uptime years
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- `#{uptime_d}`: uptime days, modulo 365 when `#{uptime_y}` is used
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- `#{uptime_h}`: uptime hours
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- `#{uptime_m}`: uptime minutes
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- `#{uptime_s}`: uptime seconds
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- `#{username}`: SSH/Mosh aware username information
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- `#{username_ssh}`: SSH aware username information, blank when not connected
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to a remote server through SSH/Mosh
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Beside custom variables mentioned above, the `tmux_conf_theme_status_left` and
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`tmux_conf_theme_status_right` variables support usual tmux syntax, e.g. using
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`#()` to call an external command that inserts weather information provided by
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[wttr.in]:
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```
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tmux_conf_theme_status_right='#{prefix}#{pairing}#{synchronized} #(curl -m 1 wttr.in?format=3 2>/dev/null; sleep 900) , %R , %d %b | #{username}#{root} | #{hostname} '
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```
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The `sleep 900` call makes sure the network request is issued at most every 15
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minutes whatever the value of `status-interval`.
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[wttr.in]: https://github.com/chubin/wttr.in#one-line-output
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💡 You can also define your own custom variables. See the sample
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`.tmux.conf.local` file for instructions.
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Finally, remember `tmux_conf_theme_status_left` and
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`tmux_conf_theme_status_right` end up being given to tmux as `status-left` and
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`status-right` which means they're passed through `strftime()`. As such, the `%`
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character has a special meaning and needs to be escaped by doubling it, e.g.
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```
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tmux_conf_theme_status_right='#(echo foo %% bar)'
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```
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See `man 3 strftime`.
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### Accessing the macOS clipboard from within tmux sessions
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[Chris Johnsen created the `reattach-to-user-namespace`
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utility][reattach-to-user-namespace] that makes `pbcopy` and `pbpaste` work
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again within tmux.
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To install `reattach-to-user-namespace`, use either [MacPorts][] or
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[Homebrew][]:
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$ port install tmux-pasteboard
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or
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$ brew install reattach-to-user-namespace
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Once installed, `reattach-to-usernamespace` will be automatically detected.
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[MacPorts]: http://www.macports.org/
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[Homebrew]: http://brew.sh/
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### Using the configuration under Cygwin within Mintty
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**I don't recommend running this configuration with Cygwin anymore. Forking
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under Cygwin is extremely slow and this configuration issues a lot of
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`run-shell` commands under the hood. As such, you will experience high CPU
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usage. As an alternative consider using [Mintty terminal for WSL][wsltty].**
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It is possible to use this configuration under Cygwin within Mintty, however
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support for Unicode symbols and emojis lacks behind Mac and Linux.
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Particularly, Mintty's text rendering is implemented with GDI which has
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limitations:
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- color emojis are only available through DirectWrite starting with Windows 8.1
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- display of double width symbols, like the battery discharging symbol indicator
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(U+1F50B) is buggy
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To get Unicode symbols displayed properly, you have to use [font linking].
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Open `regedit.exe` then navigate to the registry key at
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`HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontLink\SystemLink`
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and add a new entry for you preferred font to link it with the Segoe UI Symbol
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font.
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[font linking]: https://msdn.microsoft.com/en-us/goglobal/bb688134.aspx
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