tmux.conf

# set the prefix key
set -g prefix C-Space

# enable mouse support
set -g mouse on

# enable true color support
# https://gist.github.com/andersevenrud/015e61af2fd264371032763d4ed965b6
set -g default-terminal "tmux-256color"
set -ga terminal-features ",$TERM:RGB"

# apply nvim :checkhealth suggestions
set -g escape-time 10
set -g focus-events on

# number windows and panes from 1
set -g base-index 1
set -g pane-base-index 1
set -g renumber-windows on

# customize status bar
set -g status-right ""
# default: #I:#W#F
set -g window-status-format "#I:#{s|$HOME|~:pane_current_path}"
set -g window-status-current-format "#I:#{s|$HOME|~:pane_current_path}"
set -g window-status-current-style bg=cyan

# split windows keeping the current path
bind '-' split-window -v -c "#{pane_current_path}"
bind '\' split-window -h -c "#{pane_current_path}"

# quickly zoom panes
bind C-Space resize-pane -Z

# use vim keybindings in copy mode
# https://ianthehenry.com/posts/how-to-configure-tmux
set -g mode-keys vi
bind v copy-mode
bind -T copy-mode-vi v send -X begin-selection
bind -T copy-mode-vi V send -X select-line
bind -T copy-mode-vi y send -X copy-selection-and-cancel
# make rectangle selection behave like in vim
bind -T copy-mode-vi C-v    send -X rectangle-on  \; send -X begin-selection
bind -T copy-mode-vi Escape send -X rectangle-off \; send -X clear-selection

# navigate seamlessly between tmux and vim panes
# https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|l?n?vim?x?|fzf)(diff)?$'"
bind -n S-Left  if "$is_vim" "send S-Left"  "select-pane -L"
bind -n S-Down  if "$is_vim" "send S-Down"  "select-pane -D"
bind -n S-Up    if "$is_vim" "send S-Up"    "select-pane -U"
bind -n S-Right if "$is_vim" "send S-Right" "select-pane -R"
bind -T copy-mode-vi S-Left  select-pane -L
bind -T copy-mode-vi S-Down  select-pane -D
bind -T copy-mode-vi S-Up    select-pane -U
bind -T copy-mode-vi S-Right select-pane -R