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.tmux

Self-contained, pretty and versatile .tmux.conf configuration file.

Installation

Requirements:

tmux 2.1+ running inside Linux, Mac, OpenBSD or Cygwin
outside of tmux, $TERM must be set to xterm-256color

To install, run the following from your terminal:

$ cd
$ git clone https://github.com/gpakosz/.tmux.git
$ ln -s .tmux/.tmux.conf
$ cp .tmux/.tmux.conf.local .

Then proceed to customize your ~/.tmux.conf.local copy.

If you're a Vim user, setting the $EDITOR environment variable to vim will enable and further customize the vi-style key bindings (see tmux manual).

Features

C-a acts as secondary prefix, while keeping default C-b prefix
visual theme inspired by Powerline
maximize any pane to a new window with <prefix> +
SSH aware username and hostname status line information
mouse mode toggle with <prefix> m
automatic usage of reattach-to-user-namespace if available
laptop battery status line information
uptime status line information
optional highlight of focused pane (tmux 2.1+)
configurable new windows and panes behavior (optionally retain current path)
SSH aware split pane (reconnects to remote server, experimental)
Facebook PathPicker integration if available
Urlview integration if available

This configuration uses the following bindings:

<prefix> C-c creates a new session
<prefix> e opens ~/.tmux.conf.local with the editor defined by the $EDITOR environment variable (defaults to vim when empty)
<prefix> r reloads the configuration
<prefix> C-f lets you switch to another session by name
<prefix> C-h and <prefix> C-l let you navigate windows (default <prefix> n and <prefix> p are unbound)
<prefix> Tab brings you to the last active window
<prefix> h, <prefix> j, <prefix> k and <prefix> l let you navigate panes ala Vim
<prefix> H, <prefix> J, <prefix> K, <prefix> L let you resize panes
<prefix> < and <prefix> > let you swap panes
<prefix> + maximizes the current pane to a new window
<prefix> m toggles mouse mode on or off
<prefix> U launches Urlview (if available)
<prefix> F launches Facebook PathPicker (if available)
<prefix> Enter enters copy-mode
<prefix> b lists the paste-buffers
<prefix> p pastes from the top paste-buffer
<prefix> P lets you choose the paste-buffer to paste from
C-l clears both the screen and the history

Additionally, vi-choice, vi-edit and vi-copy named tables are adjusted to closely match my own Vim configuration

Bindings for the vi-choice mode-table:

h collapses the current tree node
l expands the current tree node
H collapses all the tree nodes
L expands all the tree nodes
K jumps to the start of list (tmux 2.0+)
L jumps to the end of list (tmux 2.0+)
Escape cancels the current operation

Bindings for the vi-edit mode-table:

H jumps to the start of line
L jumps to the end of line
q cancels the current operation
Escape cancels the current operation

Bindings for the vi-copy mode-table:

v begins selection / visual mode
C-v toggles between blockwise visual mode and visual mode
H jumps to the start of line
L jumps to the end of line
y copies the selection to the top paste-buffer
Escape cancels the current operation

The "maximize any pane to a new window with <prefix> +" feature is different from builtin resize-pane -Z as it allows you to further split a maximized pane. It's also more flexible by allowing you to maximize a pane to a new window, then change window, then go back and the pane is still in maximized state in its own window. You can then minimize a pane by using <prefix> + either from the source window or the maximized window.

Mouse mode allows you to set the active window, set the active pane, resize panes and automatically switches to copy-mode to select text.

Configuration

While this configuration tries to bring sane default settings, you may want to customize it further to your needs. Instead of altering the ~/.tmux.conf file and diverging from upstream, the proper way is to edit the ~/.tmux.conf.local file.

Please refer to the default .tmux.conf.local file to know more about variables you can adjust to alter different behaviors. Pressing <prefix> e will open ~/.tmux.conf.local with the editor defined by the $EDITOR environment variable (defaults to vim when empty).

Enabling the Powerline look

Powerline originated as a status-line plugin for Vim. Its popular eye-catching look is based on the use of special symbols: Powerline Symbols

To make use of these symbols, there are several options:

use a font that already bundles those: this is e.g. the case of the 2.030R-ro/1.050R-it version of the Source Code Pro] font
use a pre-patched font
use your preferred font along with the Powerline font (that only contains the Powerline symbols): this highly depends on your operating system and your terminal emulator
patch your preferred font by adding the missing Powerline symbols: this is the most difficult way and is no more documented in the Powerline manual

Please see the Powerline manual for further details.

Then edit the ~/.tmux.conf.local file (<prefix> e) and adjust the following variables:

tmux_conf_theme_left_separator_main=''
tmux_conf_theme_left_separator_sub=''
tmux_conf_theme_right_separator_main=''
tmux_conf_theme_right_separator_sub=''

Configuring the status line

Contrary to the first iterations of this configuration, by now you have total control on the content and order of status-left and status-right.

Edit the ~/.tmux.conf.local file (<prefix> e) and adjust the tmux_conf_theme_status_left and tmux_conf_theme_status_right variables to your own preferences.

This configuration supports the following builtin variables:

#{battery_bar}: horizontal battery charge bar
#{battery_percentage}: battery percentage
#{battery_status}: is battery charging or discharging?
#{battery_vbar}: vertical battery charge bar
#{circled_session_name}: circled session number, up to 20
#{hostname}: SSH aware hostname information
#{hostname_ssh}: SSH aware hostname information, blank when no SSH connection detected
#{pairing}: is session attached to more than one client?
#{prefix}: is prefix being depressed?
#{root}: is current user root?
#{uptime_d}: uptime days
#{uptime_h}: uptime hours
#{uptime_m}: uptime minutes
#{uptime_s}: uptime seconds
#{username}: SSH aware username information
#{username_ssh}: SSH aware username information, blank when no SSH connection detected

Accessing the Mac OSX clipboard from within tmux sessions

Chris Johnsen created the reattach-to-user-namespace utility that makes pbcopy and pbpaste work again within tmux.

To install reattach-to-user-namespace, use either MacPorts or Homebrew:

$ port install tmux-pasteboard

$ brew install reattach-to-user-namespace

Once installed, reattach-to-usernamespace will be automatically detected.

Using the configuration under Cygwin within Mintty

It is possible to use this configuration under Cygwin within Mintty, however support for Unicode symbols and emojis lacks behind Mac and Linux.

Particularly, Mintty's text rendering is implemented with GDI which has limitations:

color emojis are only available through DirectWrite starting with Windows 8.1
display of double width symbols, like the battery discharging symbol indicator (U+1F50B) is buggy

To get Unicode symbols displayed properly, you have to use font linking. Open regedit.exe then navigate to the registry key at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontLink\SystemLink and add a new entry for you preferred font to link it with the Segoe UI Symbol font.

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