tmux.conf

# Replace C-b with C-a for the prefix key
unbind C-b
set -g prefix C-s
bind-key -r C-s send-prefix # for nested tmux sessions

set -g history-limit 1000000

# Easy reloading of the tmux.conf config file
bind-key r source-file ~/.tmux.conf \; display-message "~/.tmux.conf reloaded"

# Seamless aviation using vim-tmux-navigator (github christoomey/vim-tmux-navigator)
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"

# Use 256 color mode, useful for Vim
set-option -g default-terminal "screen-256color" #"xterm-256color" # "screen-256color"

# Use emacs / readline key-bindings in the tmux command prompt
set-option -g status-keys "emacs"

# More intuitive pane splitting key-bindings, open all in current path
bind-key - split-window -v # split pane horizontally
bind-key '\' split-window -h # split pane vertically
bind c new-window

# Easy resizing of panes with fine and coarse adjustment
bind -n S-Left resize-pane -L 2
bind -n S-Right resize-pane -R 2
bind -n S-Down resize-pane -D 1
bind -n S-Up resize-pane -U 1
bind -n C-Left resize-pane -L 10
bind -n C-Right resize-pane -R 10
bind -n C-Down resize-pane -D 5
bind -n C-Up resize-pane -U 5

# Start the window numbering at 1, renumber as created/destroyed
set-option -g base-index 1
set-option -g renumber-windows on

bind-key b break-pane -d

# Use vim keybindings when copying
setw -g mode-keys vi

# Setup 'v' to begin selection as in Vim
bind-key -T copy-mode-vi v send-keys -X begin-selection
bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"

# Update default binding of `Enter` to also use copy-pipe
unbind -T copy-mode-vi Enter
bind-key -T copy-mode-vi Enter send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"

# Fuzzy matching session navigation via fzf utility
bind C-j split-window -v "tmux list-sessions | sed -E 's/:.*$//' | grep -v \"^$(tmux display-message -p '#S')\$\" | fzf --reverse | xargs tmux switch-client -t"

# Prompted join-pane
bind-key j command-prompt -p "join pane from:" "join-pane -h -s '%%'"

# Easily swap a pane (targeted by pane number) with the current pane
bind-key s display-panes\; command-prompt -p "pane #: "  "swap-pane -t '%%'"

# "break session" and "kill session" without exiting tmux
bind-key C-b send-keys "tat" "C-m"
bind-key K run-shell 'tmux switch-client -n \; kill-session -t "$(tmux display-message -p "#S")" || tmux kill-session'

############################################################################
# Status Bar
############################################################################
set-option -g status-justify right
set-option -g status-bg black # colour213 # pink
set-option -g status-fg cyan
set-option -g status-interval 5
set-option -g status-left-length 25
set-option -g status-left "#[fg=cyan,bold]#S#[fg=color244]@#[fg=cyan,bold]#H #(battery -pt)"
set-option -g status-right "#[fg=red,bold] %H:%M #[fg=cyan]» #[fg=blue,bold]%a %e %b %Y#[default]"
set-option -g window-status-format "#[fg=green]#W"
set-option -g window-status-current-format "#[bg=black, fg=green, bold, underscore] #W "
set-option -g visual-activity on

# Titles (window number, program name, active (or not)
set-option -g set-titles on
set-option -g set-titles-string '#H:#S.#I.#P #W #T'

# use mouse for scrolling
setw -g mouse on

set -g update-environment -r
set-option -sg escape-time 10
set -ga terminal-overrides ",xterm-256color:Tc"

bind-key h split-window -h "htop"