dot_tmux.conf

# address vim mode switching delay (http://superuser.com/a/252717/65504)
set -s escape-time 0

# increase scrollback buffer size
set -g history-limit 50000

# tmux messages are displayed for 4 seconds
set -g display-time 4000

# refresh 'status-left' and 'status-right' more often
set -g status-interval 5

# upgrade $TERM
set -g default-terminal "tmux-256color"

# focus events enabled for terminals that support them
set -g focus-events on

# Start window and pane index at 1
set -g base-index 1
setw -g pane-base-index 1

# super useful when using "grouped sessions" and multi-monitor setup
setw -g aggressive-resize on

set -g set-titles on
set -g default-command "${SHELL}"
unbind C-b
set -g prefix C-a
bind C-a send-prefix

setw -g mode-keys vi
bind-key -T copy-mode-vi 'v' send -X begin-selection
bind-key -T copy-mode-vi 'C-v' send -X rectangle-toggle
bind-key -T copy-mode-vi 'y' send -X copy-selection
bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel 'wl-copy'

# Smart pane switching with awareness of Vim splits.
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind-key -n 'C-h' if-shell "$is_vim" "send-keys C-h"  "select-pane -L"
bind-key -n 'C-j' if-shell "$is_vim" "send-keys C-j"  "select-pane -D"
bind-key -n 'C-k' if-shell "$is_vim" "send-keys C-k"  "select-pane -U"
bind-key -n 'C-l' if-shell "$is_vim" "send-keys C-l"  "select-pane -R"
bind-key -n 'C-\' if-shell "$is_vim" "send-keys C-\\" "select-pane -l"
bind-key -T copy-mode-vi 'C-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l