.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

# Force a reload of the config file
unbind r
bind r source-file ~/.tmux.conf

# Start from 1, 0 is too far!
set -g base-index 1

set -g history-limit 10000

# No delay for escape key press
set -sg escape-time 0

set -g status-keys vi
setw -g mode-keys vi
setw -g mouse off
setw -g monitor-activity on

# Automatically set window title
set-window-option -g automatic-rename on
set -g set-titles on

# Renumber windows serially when a window is closed.
# This also makes sure new windows are created at the end.
set -g renumber-windows on

# Quick window cycling: Ctrl+A followed by window number
unbind ^A
bind ^A select-pane -t :.+

# Create new windows and panes with the current directory
bind c new-window -c "#{pane_current_path}"
bind v split-window -h -c "#{pane_current_path}"
bind s split-window -v -c "#{pane_current_path}"

# Window navigation (without prefix): Ctrl-pn
bind -n C-p previous-window
bind -n C-n next-window

# Pane navigation (without prefix): Ctrl-hjkl
# 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 "$is_vim" 'send-keys C-l'  'select-pane -R'
tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$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

# vim keybinding for tmux copy-pasting
bind-key -T copy-mode-vi 'v' send -X begin-selection
bind-key -T copy-mode-vi 'y' send -X copy-selection-and-cancel

# Theme
set -g status-bg black
set -g status-fg white
set -g status-interval 60
set -g status-left-length 30
set -g status-left '#[fg=green](#S) '
set -g status-right '#[fg=yellow]#(cut -d " " -f 1-3 /proc/loadavg)#[default] #[fg=white]%H:%M#[default]'

# Import macOS-only config
if-shell 'test "$(uname -s)" = "Darwin"' 'source ~/.tmux-osx.conf'