.tmux.conf

set -g prefix C-a #
unbind C-b # C-b即Ctrl+b键，unbind意味着解除绑定
bind C-a send-prefix # 绑定Ctrl+a为新的指令前缀

setw -g mode-keys vi # 开启vi风格后，支持vi的C-d、C-u、hjkl等快捷键

set -g base-index 1
set -g default-terminal "screen-256color"
set -g mouse on
set -g set-clipboard off
set -g visual-activity on
set -s escape-time 1
set-option -g default-shell /bin/zsh
set-option -g focus-events on
set-option -ga terminal-overrides ",*256col*:Tc"
setw -g monitor-activity on
setw -g pane-base-index 1

bind '"' split-window -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"

# 绑定重载配置快捷键为r
bind r source-file ~/.tmux.conf \; display-message "Config reloaded.."

# Smart pane switching with awareness of Vim splits.
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind-key -n C-h if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
bind-key -n C-j if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
bind-key -n C-k if-shell "$is_vim" 'send-keys C-k'  'select-pane -U'
bind-key -n C-l if-shell "$is_vim" 'send-keys C-l'  'select-pane -R'

bind-key -n M-h if-shell "$is_vim" 'send-keys M-h' 'resize-pane -L 3'
bind-key -n M-j if-shell "$is_vim" 'send-keys M-j' 'resize-pane -D 3'
bind-key -n M-k if-shell "$is_vim" 'send-keys M-k' 'resize-pane -U 3'
bind-key -n M-l if-shell "$is_vim" 'send-keys M-l' 'resize-pane -R 3'

tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'

if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"

bind-key -T copy-mode-vi 'C-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l

# clear screen
bind-key C-l send-keys "clear" Enter

# clipboard
bind v copy-mode # 绑定v键为进入复制模式
bind-key -T copy-mode-vi v send-keys -X begin-selection
unbind -T copy-mode-vi Enter

if-shell -b '[ "$(uname -s)" == "Darwin" ]' {
  bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "pbcopy"
  bind P run "tmux set-buffer \"\$(reattach-to-user-namespace pbpaste)\"; tmux paste-buffer"
}

if-shell -b '[ "$(uname -s)" == "Linux" ]' {
  if-shell -b '[ "$(echo $XDG_SESSION_TYPE)" == "x11" ]' {
    bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel 'xclip -i -sel c'
    bind P run "tmux set-buffer \"\$(xclip -o -sel c)\"; tmux paste-buffer"
  }

  if-shell -b '[ "$(echo $XDG_SESSION_TYPE)" == "wayland" ]' {
    bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel 'wl-copy'
    bind P run "tmux set-buffer \"\$(wl-paste)\"; tmux paste-buffer"
  }
}

# Undercurl
set -g default-terminal "${TERM}"
set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'  # undercurl support
set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'  # underscore colours - needs tmux-3.0