tmux.conf

#
# tmux configuration
#
# Prerequisites:
# `reattach-to-user-namespace`
# `tmux-vim-select-pane`
#
# Help:
# `tmux list-keys`
# `tmux list-commands`
# `tmux info`
#
# Thanks:
# @thoughtbot
# @mislav
#

# C-a as prefix instead of C-b
set -g prefix C-a
unbind C-b

# Bring back beginning-of-line under tmux prefix
bind C-a send-prefix

# Increase repeat-time for multiple commands to be entered without entering
# the prefix again (default: 500ms)
set -g repeat-time 700

# Increase scrollback lines (default: 2000)
set -g history-limit 10000

# Source this file after changes and output message in copy mode
bind R source-file ~/.tmux.conf \; run-shell "echo 'Sourced ~/.tmux.conf'"

# Faster escape sequences (default: 500ms)
# http://superuser.com/a/252717/65504
set -s escape-time 50

# Enable copy-paste http://goo.gl/DN82E
# Enable RubyMotion http://goo.gl/WDlCy
set -g default-command 'reattach-to-user-namespace -l bash'

###############################################################################
# Appearance
###############################################################################

# Support syntax highlighting in Vim
set -g default-terminal 'screen-256color'

# Display all colors:
#
# for i in {0..255}; do
#   printf "\x1b[38;5;${i}mcolour${i}\n"
# done
#
# Can also use hex colors such as '#aaaaaa'

# Pane divider color
set -g pane-border-fg colour231
set -g pane-active-border-fg colour112

#
# Monokai status bar
#

set -g status-fg colour8
set -g status-bg colour234

# Current session
set -g status-left ' #S '
set -g status-left-length 15
set -g status-left-fg colour231
set -g status-left-bg colour106

# Window list
set -g window-status-format "#[fg=colour8] #I #[fg=colour231]#W#[fg=colour106]#F "
set -g window-status-current-format "#[fg=colour81,bg=colour125] #I #[fg=colour231]#W#[fg=colour228]#F "
set -g window-status-separator ""

# Update status every 20 seconds (default: 15)
set -g status-interval 20

###############################################################################
# Windows
###############################################################################

# Number windows from 1 instead of 0
set -g base-index 1

# Renumber windows sequentially after closing any of them
set -g renumber-windows on

# Disable programs changing window names via terminal escape sequence
set-window-option -g allow-rename off

# Select prev/next windows without letting go of prefix - reverse these since
# it's more intuitive when switching left/right
bind-key -r C-n select-window -t :-
bind-key -r C-p select-window -t :+

# Create a new windows without letting go of prefix and preserve the current
# pane path
bind-key -r C-c new-window -c "#{pane_current_path}"

# Remove window/pane without letting go of prefix - no confirmation prompt
# Don't do this because it's too dangerous
# bind-key -r C-x kill-pane

###############################################################################
# Panes
###############################################################################

# Move around panes with prefix C-h/j/k/l
# bind h select-pane -L
# bind j select-pane -D
# bind k select-pane -U
# bind l select-pane -R

# Move around panes in tmux and Vim without prefix C-h/j/k/l
# Requires `tmux-vim-select-pane` script and tmux_navigator.vim
# https://gist.github.com/mislav/5189704
bind -n C-h run-shell 'tmux-vim-select-pane -L'
bind -n C-j run-shell 'tmux-vim-select-pane -D'
bind -n C-k run-shell 'tmux-vim-select-pane -U'
bind -n C-l run-shell 'tmux-vim-select-pane -R'

# Toggle active panes without prefix C-\
bind -n "C-\\" run-shell 'tmux-vim-select-pane -l'

# Bring back kill-line under tmux prefix
bind C-k send-keys 'C-k'

# Bring back clear screen under tmux prefix
bind C-l send-keys 'C-l'

# Resize panes without Alt/Option
bind-key -r Left resize-pane -L 3
bind-key -r Right resize-pane -R 3
bind-key -r Up resize-pane -U 2
bind-key -r Down resize-pane -D 1

# Override default pane splitting to preserve current pane path
bind-key % split-window -h -c "#{pane_current_path}"
bind-key '"' split-window -v -c "#{pane_current_path}"

###############################################################################
# Copy Mode
###############################################################################

# Vi mode keys
setw -g mode-keys vi

# Vi-like bindings for copy/paste
bind-key -t vi-copy 'v' begin-selection

# <Enter> in copy mode copies the text to system clipboard and exits copy mode
unbind -t vi-copy Enter
bind-key -t vi-copy Enter copy-pipe 'reattach-to-user-namespace pbcopy'