.tmux.conf

# -- general -------------------------------------------------------------------

# Reassign prefix key
set -g prefix C-a

# Clear screen
bind -n C-k send-keys -R \; clear-history

# reload configuration
bind r source-file ~/.tmux.conf \; display '~/.tmux.conf sourced'

# enable vi mode keys
set-window-option -g mode-keys vi

# Enable mouse mode (tmux 2.1 and above)
set -g mouse on

set -s escape-time 0

# pane border
set -g pane-border-style fg='#6272a4'
set -g pane-active-border-style fg='#c35f75'

# message text
set -g message-style bg='#111111',fg='#8be9fd'

set -g status-style bg='#111111',fg='#bd93f9'
set -g status-interval 1

# status left
# are we controlling tmux or the content of the panes?
set -g status-left '#[bg=#f8f8f2]#[fg=#282a36]#{?client_prefix,#[bg=#4e93a6],} Ω '

# are we zoomed into a pane?
set -ga status-left '#[bg=#111111]#[fg=#ff79c6] #{?window_zoomed_flag, ⭕️  ,     }'

# window status
set-window-option -g window-status-style fg='#bd93f9',bg=default
set-window-option -g window-status-current-style fg='#ff79c6',bg='#282a36'

BLUE='#4e93a6'
RED='#c35f75'
PURPLE='#a076b7'

set -g window-status-current-format '#[fg=#111111]#[bg=#4e93a6]#[fg=#111111]#[bg=#4e93a6] #I #W #[fg=#111111]#[bg=#4e93a6]'
set -g window-status-format "#[fg=#f8f8f2]#[bg=#111111]#I #W #[fg=#111111]"

# status right
set -g status-right '#[fg=#4e93a6,bg=#111111#[fg=#111111,bg=#111111] #(tmux-mem-cpu-load -g 5 --interval 2) '
set -ga status-right '#[fg=#c35f75,bg=#111111]#[fg=#c35f75,bg=#111111] #(uptime | cut -f 4-5 -d " " | cut -f 1 -d ",") '
set -g status-right-length 60
set -g status-interval 2

# -- display -------------------------------------------------------------------

set -g base-index 1           # start windows numbering at 1
setw -g pane-base-index 1     # make pane numbering consistent with windows

setw -g automatic-rename on   # rename window to reflect current program
set -g renumber-windows on    # renumber windows when a window is closed

set -g set-titles on          # set terminal title

set -g display-panes-time 800 # slightly longer pane indicators display time
set -g display-time 1000      # slightly longer status messages display time

set -g status-interval 10     # redraw status line every 10 seconds

# clear both screen and history
bind -n C-l send-keys C-l \; run 'sleep 0.1' \; clear-history

# activity
set -g monitor-activity on
set -g visual-activity off

set -g terminal-overrides ',xterm-256color:Tc'
set -g default-terminal "screen-256color"
set -as terminal-overrides ',xterm*:sitm=\E[3m'

set -g status-left-length 50

# -- navigation ----------------------------------------------------------------

bind l split-window -h -c "#{pane_current_path}"
bind j split-window -v -c "#{pane_current_path}"

bind b select-window -l
# unbind '"'
# unbind %

# pane navigation
bind J resize-pane -D 5
bind K resize-pane -U 5
bind H resize-pane -L 5
bind L resize-pane -R 5
bind > swap-pane -D       # swap current pane with the next one
bind < swap-pane -U       # swap current pane with the previous one

# smart pane switching with awareness of vim splits
bind -n C-h run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-h) || tmux select-pane -L"
bind -n C-j run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-j) || tmux select-pane -D"
bind -n C-k run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-k) || tmux select-pane -U"
bind -n C-l run "(tmux display-message -p '#{pane_current_command}' | grep -iq vim && tmux send-keys C-l) || tmux select-pane -R"

bind-key -n M-x confirm-before "kill-pane"

# -- copy ----------------------------------------------------------------------

# 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 'reattach-to-user-namespace pbcopy'

unbind -T copy-mode-vi Enter
# Drag to also use copy-pipe
bind-key -T copy-mode-vi MouseDragEnd1Pane send -X copy-pipe-and-cancel "pbcopy"