tmux.conf

set -g default-terminal "screen-256color"

# remap prefix to Control + a
set -g prefix C-a
unbind C-b
bind C-a send-prefix

#switch panels
#bind k selectp -U # switch to panel Up
#bind j selectp -D # switch to panel Down
#bind h selectp -L # switch to panel Left
#bind l selectp -R # switch to panel Right

# smart pane switching with awareness of vim splits
is_vim='echo "#{pane_current_command}" | grep -iqE "(^|\/)g?(view|n?vim?x?)(diff)?$"'
bind -n C-h if-shell "$is_vim" "send-keys C-h" "select-pane -L"
bind -n C-j if-shell "$is_vim" "send-keys C-j" "select-pane -D"
bind -n C-k if-shell "$is_vim" "send-keys C-k" "select-pane -U"
bind -n C-l if-shell "$is_vim" "send-keys C-l" "select-pane -R"
bind -n C-\ if-shell "$is_vim" "send-keys C-\\" "select-pane -l"

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

# disable escape delay because of vim mode switching
set -sg escape-time 0

# start window numbers at 1 to match keyboard order with tmux window order
set -g base-index 1
set-window-option -g pane-base-index 1

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

# soften status bar color from harsh green to light gray
set -g status-bg '#666666'
set -g status-fg '#aaaaaa'

# copy selected text in copy mode with y, like in vi
setw -g mode-keys vi
unbind p
bind p paste-buffer
bind-key -t vi-copy 'v' begin-selection
bind-key -t vi-copy 'y' copy-selection