.tmux.conf

# Ring the bell if any background window rang a bell
set -g bell-action any

# Default termtype. If the rcfile sets $TERM, that overrides this value.
set -g default-terminal screen-256color

set-option -g default-command "reattach-to-user-namespace -l $SHELL -l"

# Keep your finger on ctrl, or don't
bind-key ^D detach-client

bind k send-keys "clear"\; send-keys "Enter"

# auto window rename
set-window-option -g automatic-rename

# Pane resize in all four directions using vi bindings.
# Can use these raw but I map them to shift-ctrl-<h,j,k,l> in iTerm.
bind-key J resize-pane -D 31
bind-key K resize-pane -U 30
bind-key H resize-pane -L 30
bind-key L resize-pane -R 30

# quick pane cycling
unbind ^S
bind ^S select-pane -t:.+

# switching between sessions
unbind ^A
bind ^A choose-tree

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

# switch windows alt+number
bind-key -n M-1 select-window -t 1
bind-key -n M-2 select-window -t 2
bind-key -n M-3 select-window -t 3
bind-key -n M-4 select-window -t 4
bind-key -n M-5 select-window -t 5
bind-key -n M-6 select-window -t 6
bind-key -n M-7 select-window -t 7
bind-key -n M-8 select-window -t 8
bind-key -n M-9 select-window -t 9

# Use vi keybindings for tmux commandline input.
# Note that to get command mode you need to hit ESC twice...
set -g status-keys vi

# Use vi keybindings in copy and choice modes
setw -g mode-keys vi
#
# easily toggle synchronization (mnemonic: e is for echo)
# sends input to all panes in a given window.
bind e setw synchronize-panes on
bind E setw synchronize-panes off

# set first window and pane to index 1 (not 0) to map more to the keyboard layout...
set -g base-index 1
set -g pane-base-index 1

# play nice with system clipboard
set-option -g default-command "reattach-to-user-namespace -l zsh"
bind C-c run "tmux show-buffer | reattach-to-user-namespace pbcopy"
bind C-v run "reattach-to-user-namespace pbpaste | tmux load-buffer - && tmux paste-buffer"

# vi style copy&paste
unbind [
bind Escape copy-mode
unbind p
bind p paste-buffer

# Setup 'v' to begin selection as in Vim
bind-key -t vi-copy v begin-selection
bind-key -t vi-copy y copy-pipe "reattach-to-user-namespace pbcopy"

# Update default binding of `Enter` to also use copy-pipe
unbind -t vi-copy Enter
bind-key -t vi-copy Enter copy-pipe "reattach-to-user-namespace pbcopy"

bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# reload config
bind r source-file ~/.tmux.conf \; display-message "Config reloaded..."

# Rather than constraining window size to the maximum size of any client
# connected to the *session*, constrain window size to the maximum size of any
# client connected to *that window*. Much more reasonable.
setw -g aggressive-resize on

# Allows us to use C-a a <command> to send commands to a TMUX session inside
# another TMUX session
bind-key a send-prefix

# Activity monitoring
setw -g monitor-activity on
set -g visual-activity on

# Mouse mode
setw -g mode-mouse on
set -g mode-mouse on
set -g mouse-resize-pane on
set -g mouse-select-pane on
set -g mouse-select-window on

# Panes
# horizontal and vertical splits
unbind |
bind | split-window -h
unbind _
bind _ split-window

# tile all windows
unbind =
bind = select-layout tiled

unbind +
bind + resize-pane -Z

unbind Right
bind Right resize-pane -R 8
unbind Left
bind Left resize-pane -L 8
unbind Up
bind Up resize-pane -U 4
unbind Down
bind Down resize-pane -D 4

# Status line
source ~/.tmuxline

# Screen like binding
unbind C-b
set -g prefix C-a

# No escape time for vi mode
set -sg escape-time 0

# Screen like binding for last window
bind C-a last-window

# Bigger history
set -g history-limit 10000