My tmux configuration

tmux.conf

# NOTE: make image preview in kitty work
set -g allow-passthrough on

# NOTE: prefix
set -g prefix M-a
bind M-a send-prefix
unbind C-b

set -g status-style fg=default,fg=default
# set -g base-index 1
# set -g pane-base-index 1
set -g mouse on
set -g cursor-style bar
# https://superuser.com/a/1809494/1824899
set -sg escape-time 5
set -g history-limit 50000
set -g display-time 4000
set -g status-interval 5
set -g status-keys emacs
set -g focus-events on

set-window-option -g aggressive-resize on
set-window-option -g mode-keys vi

# NOTE: status bar look
set -g status-position top
set -g status-left '#{?client_prefix,#[bg=red],}  #S  '
set -g status-right ''
set-window-option -g window-status-format ' #{?window_zoomed_flag,,} #I: #W  '
set-window-option -g window-status-current-format '#{?window_active,#[bg=yellow],} #{?window_zoomed_flag,,} #I: #W  '

# Make colorscheme in neovim works
# See relevant question on stackoverflow: https://stackoverflow.com/a/60313682
# This works for ArchLinux, alacritty
set-option -ga terminal-overrides ",xterm-256color:Tc"

# Quick refresh of tmux config
unbind M-s
bind M-s source-file ~/.config/tmux/tmux.conf

# Session management
unbind s
unbind x
bind M-q switchc -p # prefix M-q switch to previous session
bind M-e switchc -n # prefix M-e switch to next session
bind M-t new-session
unbind r
bind r command-prompt -I "" { rename-session "%%" } # prefix r to rename session
bind M-r command-prompt -I "" { rename-session "%%" } # prefix r to rename session
bind x kill-session

# Windows Management
bind p resize-pane -Z #zoom
bind d split-window -h -c '#{pane_current_path}' # vertical split
bind a split-window -v -c '#{pane_current_path}' # horizontal split
bind x set-option status # toggle status bar
unbind %
unbind 0
unbind 1
unbind 2
unbind 3
unbind 4
unbind 5
unbind 6
unbind 7
unbind 8
unbind 9
bind \\ split-window -h -c '#{pane_current_path}' # vertical split, semantic keybinding!!!
bind D detach-client
unbind '"'
bind - split-window -v -c '#{pane_current_path}' # horizontal split, semantic keybinding!!!
bind -r J resize-pane -D 4
bind -r K resize-pane -U 4
bind -r L resize-pane -R 4
bind -r H resize-pane -L 4
bind -r m resize-pane -Z # maximize/unmaximize pane
bind h select-pane -L # select pane on left
bind j select-pane -D # select pane on bottom
bind k select-pane -U # select pane on top
bind l select-pane -R # select pane on right
bind -n M-t new-window -c "#{pane_current_path}"
bind -n M-q previous-window
bind -n M-e next-window
bind f display-popup -E -x20% -y20% -h40% -w80% "$HOME/bin/tmux-window"


# NOTE: popup for editing oldfiles
bind s display-popup -E -x20% -y20% -h80% -w80% nvim

bind -n M-w kill-pane

# bind -n M-0 kill-pane -a
bind -n M-r command-prompt -I "#W" { rename-window "%%" }

# Copy mode like vim
bind -n M-x copy-mode

# NOTE: if programs specified in `TMUX_YANK_NOT_CANCEL_PAT` are running in current pane
# don't exit copy-mode after yanking, otherwise quit copy mode after yanking
bind -T copy-mode-vi 'y' if-shell "$HOME/bin/tmux-yank #{pane_tty}" {
	send-keys -X copy-selection
} {
	send-keys -X copy-selection-and-cancel
}
bind -T copy-mode-vi 'Y' send-keys -X copy-selection-and-cancel

unbind -T copy-mode-vi H
unbind -T copy-mode-vi L
unbind -T copy-mode-vi J
unbind -T copy-mode-vi K
unbind -T copy-mode-vi MouseDragEnd1Pane
unbind -T copy-mode-vi C-v
bind -T copy-mode-vi 'v' send -X begin-selection
bind -T copy-mode-vi 'H' send -X start-of-line
bind -T copy-mode-vi 'L' send -X end-of-line
bind -T copy-mode-vi 'K' send -X halfpage-up
bind -T copy-mode-vi 'J' send -X halfpage-down
bind -T copy-mode-vi Escape send -X clear-selection
bind -T copy-mode-vi 'i' send -X cancel
bind -T copy-mode-vi 'a' send -X cancel
bind -T copy-mode-vi 'q' send -X cancel
bind -T copy-mode-vi ? command-prompt -T search -p "(search down)" { send-keys -X search-forward "%%" }
bind -T copy-mode-vi / command-prompt -T search -p "(search up)" { send-keys -X search-backward "%%" }


bind-key -n 'C-j' if-shell "$HOME/bin/tmux-navigator #{pane_tty} #W" { send-keys C-j } { if-shell -F '#{pane_at_bottom}' {} { select-pane -D } }
bind-key -n 'C-k' if-shell "$HOME/bin/tmux-navigator #{pane_tty} #W" { send-keys C-k } { if-shell -F '#{pane_at_top}'    {} { select-pane -U } }
bind-key -T copy-mode-vi 'C-j' if-shell -F '#{pane_at_bottom}' {} { select-pane -D }
bind-key -T copy-mode-vi 'C-k' if-shell -F '#{pane_at_top}'    {} { select-pane -U }

bind-key -n 'C-h' if-shell "$HOME/bin/tmux-navigator #{pane_tty} #W" { send-keys C-h } {
	if-shell -F '#{pane_at_left}'   { previous-window }  { if-shell '[[ #W =~ nnn ]]' { previous-window } { select-pane -L }}}
bind-key -n 'C-l' if-shell "$HOME/bin/tmux-navigator #{pane_tty} #W" { send-keys C-l } {
	if-shell -F '#{pane_at_right}'   { next-window }  { if-shell '[[ #W =~ nnn ]]' { next-window } { select-pane -R }}}

bind-key -T copy-mode-vi 'C-h' if-shell -F '#{pane_at_left}'   { previous-window }  { if-shell '[[ #W =~ nnn ]]' { previous-window } { select-pane -L }}
bind-key -T copy-mode-vi 'C-l' if-shell -F '#{pane_at_right}'   { next-window }  { if-shell '[[ #W =~ nnn ]]' { next-window } { select-pane -R }}
bind C-l send-keys 'C-l'