My tmux config, migrate from gnu screen config via ChatGPT

tmux.conf

# ~/.config/tmux/tmux.conf
# https://quickref.me/tmux
# https://man7.org/linux/man-pages/man1/tmux.1.html

# Install
#
# ```bash
# mkdir -p ~/.config/tmux
# curl -L https://gist.github.com/zthxxx/bbbb37c100254d688236c21e8b977b85/raw/tmux.conf -o ~/.config/tmux/tmux.conf
# ```
#
# or for development:
#
# ```bash
# git clone --depth=1 [email protected]:bbbb37c100254d688236c21e8b977b85.git tmux-config
# cd tmux-config
# mkdir -p ~/.config/tmux
# ln -fs "`pwd`/tmux.conf" ~/.config/tmux/tmux.conf
#
# # Tmux Plugin Manager  https://github.com/tmux-plugins/tpm
# git clone --depth=1 https://github.com/tmux-plugins/tpm ~/.config/tmux/plugins/tpm
# ```

######################
#
# Note:
#   - run shell `tmux list-keys -T prefix` to list all key bindings in prefix table
#   - by default, <prefix> + Ctrl-O to rotate panes in current window
#
#

######################

#
# -- Common Settings --
#
# set-option: (alias set)
# set-window-option: (alias setw)

# Enable xterm keys to correctly interpret key sequences
setw -g xterm-keys on

# Eliminate delay for escape key sequences
set -s escape-time 0

# Set the rate for repeating keys when held down
set -sg repeat-time 300

# Enable focus events for terminal
set -s focus-events on

# Enable mouse support
set -g mouse on

# Automatically exit tmux when there are no sessions
set -sg exit-empty on

# Quietly enable UTF-8 support for status line
set -q -g status-utf8 on

# Quietly enable UTF-8 support for windows
setw -q -g utf8 on

# visual notification for window activity
set -g visual-activity off

# monitoring of window activity
setw -g monitor-activity on
setw -g bell-action any

# bell notification for the window
setw -g monitor-bell on

set -g default-terminal "xterm-256color"

# scroll history cache
set -g history-limit 65535

#
# -- Window display --
#

# Set the base index for windows to 1 instead of the default 0
set -g base-index 1

# Set the base index for panes to 1 instead of the default 0
setw -g pane-base-index 1

# Enable automatic renaming of windows based on the running application
setw -g automatic-rename on

# `b:` for basename
# set -g automatic-rename-format '#(print -P %1~)'
set -g automatic-rename-format '#{b:pane_current_path}'

# Automatically renumber the windows to have sequential indices after a window is closed
set -g renumber-windows on

# Automatically set terminal title to reflect the current program and directory
set -g set-titles on

# Display pane numbers for 2000 milliseconds (2 seconds) when the display-panes command is used
set -g display-panes-time 2000

# Display messages for 2000 milliseconds (2 seconds)
set -g display-time 2000

# Update status line every 1 second
set -g status-interval 1


# Shortcut Key binding

#
# -- Prefix key --
# remap prefix from 'Ctrl-B' to 'Ctrl-S'
#
unbind-key C-b
unbind-key C-s
set -g prefix C-s
# # type prefix key twice to send prefix key in nested tmux session
bind-key C-s send-prefix

#
# bind-key: (alias bind)
#   Bind key key to command.  Keys are bound in a key table.
#   - By default (without -T), the key is bound in the **prefix** key table.  
#   - `-n` is an alias for `-T` root.
#   - The `-r` flag indicates this key may repeat, see the `repeat-time` option.
#
#   C: Ctrl
#   M: Meta (Alt / Option)
#   S: Shift
#
# https://man7.org/linux/man-pages/man1/tmux.1.html#KEY_BINDINGS
#

# <prefix> C-R to reload tmux config file
bind-key C-r 'source-file ~/.config/tmux/tmux.conf; display "  tmux config reloaded!  "'

# bind Alt + [123...=] to jump to window 1~12
# `M` is `Meta key`
bind-key -n M-1 select-window -t :1
bind-key -n M-2 select-window -t :2
bind-key -n M-3 select-window -t :3
bind-key -n M-4 select-window -t :4
bind-key -n M-5 select-window -t :5
bind-key -n M-6 select-window -t :6
bind-key -n M-7 select-window -t :7
bind-key -n M-8 select-window -t :8
bind-key -n M-9 select-window -t :9
bind-key -n M-0 select-window -t :10

# bind Alt + Shift + [123...=] to move current panel to window 1~9
bind-key -n 'M-!' join-pane -t :1
bind-key -n 'M-@' join-pane -t :2
bind-key -n 'M-#' join-pane -t :3
bind-key -n 'M-$' join-pane -t :4
bind-key -n 'M-%' join-pane -t :5
bind-key -n 'M-^' join-pane -t :6
bind-key -n 'M-&' join-pane -t :7
bind-key -n 'M-*' join-pane -t :8
bind-key -n 'M-(' join-pane -t :9

# new panel in current window,
# the new panel position like:
#
#     I
#  J  K  L
#
bind-key k split-window -vb -c "#{pane_current_path}"
bind-key j split-window -v -c "#{pane_current_path}"
bind-key h split-window -hb -c "#{pane_current_path}"
bind-key l split-window -h -c "#{pane_current_path}"


bind-key -n F2 previous-window
bind-key -n F3 next-window
# add alternative in VSCode terminal
bind-key -n C-F2 previous-window
bind-key -n C-F3 next-window

bind-key -n F5 new-window -c "#{pane_current_path}"
bind-key -n F6 detach
# add alternative in VSCode terminal
bind-key -n C-F6 detach
bind-key -n F7 kill-pane

# F8: rename the current window, defaulting to its present name
bind-key -n F8 command-prompt -I "#W" "rename-window '%%'"
# Ctrl-F8: rename the current session, defaulting to its present name
bind-key -n C-F8 command-prompt -I "#S" "rename-session '%%'"

# bind F10 to toggle mouse scoll modle On/Off
bind-key -n F10 "display 'Turn Mouse #{?mouse,OFF,ON}'; set mouse #{?mouse,off,on};"

# https://fatfatson.github.io/2019/08/11/tmux内联使用方法/
#
# 按 F12 切换到 nest tmux 模式，在 macos 里需要系统设置中取消 F12 占用
# 1. 改 prefix 为 None，不再拦截快捷键
# 2. 改 key-table 为 off，下面再绑定 off 下的 F12，使之能退出内嵌模式
# 3. 改变 statusbar 颜色，以便知道已进入 nest-tmux 模式
# 4. 如果已处于特殊模式，退出
unbind-key -n F12
bind-key -n F12 \
  set prefix None \;\
  set key-table nest-tmux \;\
  set status-style bg=colour23 \;\
  if -F '#{pane_in_mode}' 'send-keys -X cancel' \;\
  refresh-client -S

# 在 nest-tmux 按键表里绑定 F12，用以恢复之前的设置，以退出该模式
#   The -u flag unsets an option, so a session inherits the option from
#   the global options (or with -g, restores a global option to the default). 
bind-key -T nest-tmux F12 \
  set -u prefix \;\
  set -u key-table \;\
  set -u status-style \;\
  refresh-client -S

# window move bindings
# <prefix> + <: move window to left one
# <prefix> + >: move window to right one
# https://github.com/tmux-plugins/tmux-pain-control/blob/master/pain_control.tmux#L29C1-L29C21
bind-key -r "<" swap-window -d -t -1
bind-key -r ">" swap-window -d -t +1

#
# -- theme --
#
# [Format](https://man7.org/linux/man-pages/man1/tmux.1.html#FORMATS)
# [STYLES](https://man7.org/linux/man-pages/man1/tmux.1.html#STYLES)
#

# Status bar background to black
set -g status-position bottom
set -g status-style "bg=default"

# Status bar left to show Session Name
set -g status-left-length 60
set -g status-left "#[fg=colour7]tmux: #[bold]#{session_name} | "


# Status bar right to show Hostname and Time
set -g status-right-length 60
set -g status-right "#[fg=colour7] #{host} | %Y-%m-%d %H:%M:%S"

# Make the status bar look like have a top overline (by pane status border)
set -g pane-border-format ''
set -g pane-border-status bottom

## if only one pane in window, dot not show the active pane border color(green), instead show default color
## Only work for tmux 3.3+
##
##   The -F flag tells tmux to treat the first argument as a format, not a shell command.  
if-shell -F '#{>=:#{version},3.3}' {
  set -g pane-active-border-style "#{?pane_in_mode,fg=yellow,#{?synchronize-panes,fg=red,fg=#{?#{==:#{window_panes},1},default,green}}}"
}

# Windows style

set -g window-status-activity-style 'none'
set -g window-status-format '#{?window_activity_flag,#[underscore],#[none]}#[fg=colour12]#{window_index}.#{window_name}'
set -g window-status-current-format '#[fg=colour13,bold,reverse][#{window_index}.#{window_name}]'
set -g window-status-separator '  '

set -g default-shell $SHELL

# plugins

## Tmux Plugin Manager https://github.com/tmux-plugins/tpm
set -g @plugin 'tmux-plugins/tmp'

## https://github.com/tmux-plugins/tmux-resurrect
set -g @plugin 'tmux-plugins/tmux-resurrect'
## custom key bindings
## https://github.com/tmux-plugins/tmux-resurrect/blob/master/docs/custom_key_bindings.md
## 
## <prefix> + Alt-Shift-S to save current tmux session
## <prefix> + Alt-Shift-R to restore tmux session
## S for Save, R for Restore
set -g @resurrect-save 'M-S'
set -g @resurrect-restore 'M-R'

run '~/.config/tmux/plugins/tpm/tpm'