tmux: Use short command variants

Use short variants of commands and get rid of redundant `-T prefix` flag
to `bind`.

.config/tmux/tmux.conf

@@ -6,8 +6,7 @@ set -g mode-keys vi
 # Disable xterm escape sequences for setting clipboard
 set -s set-clipboard off
 # Copy selection into primary selection (without aborting)
-bind-key -T copy-mode-vi MouseDragEnd1Pane \
-	send-keys -X copy-pipe-no-clear "xclip -se p"
+bind -T copy-mode-vi MouseDragEnd1Pane send -X copy-pipe-no-clear "xclip -se p"
 
 # https://github.com/neovim/neovim/wiki/FAQ#cursor-shape-doesnt-change-in-tmux
 set -ga terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[ q'
@@ -18,52 +17,52 @@ set -ga terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[ q'
 # `copy-mode`)
 bind -n WheelUpPane \
 	if -F "#{||:#{pane_in_mode},#{mouse_any_flag}}" { send -M } { copy-mode -u }
-bind -T copy-mode-vi WheelUpPane   select-pane \; send-keys -XN5 scroll-up
-bind -T copy-mode-vi WheelDownPane select-pane \; send-keys -XN5 scroll-down
+bind -T copy-mode-vi WheelUpPane   selectp \; send -XN5 scroll-up
+bind -T copy-mode-vi WheelDownPane selectp \; send -XN5 scroll-down
 
 # Set C-a as new prefix
 unbind C-b
-set-option -g prefix C-a
-bind-key C-a send-prefix
+set -g prefix C-a
+bind C-a send-prefix
 
 # Split panes with > and <
 unbind %
-bind-key < split-window -v -c "#{pane_current_path}"
+bind < split-window -v -c "#{pane_current_path}"
 unbind '"'
-bind-key > split-window -h -c "#{pane_current_path}"
+bind > split-window -h -c "#{pane_current_path}"
 
 # Create new window in current path
-bind-key -T prefix c new-window -c "#{pane_current_path}"
+bind c new-window -c "#{pane_current_path}"
 
 # Resource config
-bind-key -T prefix R source-file "$XDG_CONFIG_HOME/tmux/tmux.conf" \; \
+bind R source-file "$XDG_CONFIG_HOME/tmux/tmux.conf" \; \
                      display-message "Sourced $XDG_CONFIG_HOME/tmux/tmux.conf"
 
 # Fullscreen pane (toggle)
-bind-key -T prefix F resize-pane -Z
+bind F resizep -Z
 
 # Automatically renumber windows when closing one
 set -g renumber-windows on
 
 # Enter copy-mode and scroll one page up directly with PageUp without the need
 # of the prefix. (Exists already per default with prefix)
-bind-key -n PPage copy-mode -u
+bind -n PPage copy-mode -u
 
 # Repeatable window-navigation bindings
-bind-key -r -T prefix   n next-window
-bind-key -r -T prefix C-n next-window
-bind-key -r -T prefix   p previous-window
-bind-key -r -T prefix C-p previous-window
+bind -r   n next
+bind -r C-n next
+bind -r   p prev
+bind -r C-p prev
 
 # Vim-bindings
 
 # Enter copy-mode with Escape
-bind-key -T prefix Escape copy-mode
+bind Escape copy-mode
 # Start selection (e.g. visual mode) with `v`
 unbind -T copy-mode-vi v
-bind-key -T copy-mode-vi v send-keys -X begin-selection
+bind -T copy-mode-vi v send -X begin-selection
 # Yank into system clipboard
-bind-key -T copy-mode-vi y send-keys -X copy-pipe "xclip -selection clipboard"
+bind -T copy-mode-vi y send -X copy-pipe "xclip -selection clipboard"
 
 # Clear selection or cancel copy-mode when nothing is selected
 bind -T copy-mode-vi Escape \
@@ -72,30 +71,30 @@ bind -T copy-mode-vi Escape \
 # Navigate panes with <prefix>-[hjkl]
 # NOTE: C-[hjkl] (w/o prefix) moves through vim splits and tmux panes
 #       See vim-tmux-navigator
-unbind -T prefix l
-bind -T prefix h select-pane -L
-bind -T prefix j select-pane -D
-bind -T prefix k select-pane -U
-bind -T prefix l select-pane -R
+unbind l
+bind h selectp -L
+bind j selectp -D
+bind k selectp -U
+bind l selectp -R
 # Resize panes with Alt-Shift-[hjkl]
-bind -n M-H resize-pane -L
-bind -n M-J resize-pane -D
-bind -n M-K resize-pane -U
-bind -n M-L resize-pane -R
+bind -n M-H resizep -L
+bind -n M-J resizep -D
+bind -n M-K resizep -U
+bind -n M-L resizep -R
 
 # Allow C-h to still be passed (when programs expect it as backspace, e.g. UEFI
 # shell)
-bind -r -T selfinsert C-h send-keys C-h
-bind C-v switch-client -T selfinsert
+bind -r -T selfinsert C-h send C-h
+bind C-v switchc -T selfinsert
 
 # Resize panes with Alt-Shift-<arrow>
-bind -n M-S-Left resize-pane -L
-bind -n M-S-Up resize-pane -D
-bind -n M-S-Down resize-pane -U
-bind -n M-S-Right resize-pane -R
+bind -n M-S-Left resizep -L
+bind -n M-S-Up resizep -D
+bind -n M-S-Down resizep -U
+bind -n M-S-Right resizep -R
 
 # Change installation location of plugins
-set-environment -g TMUX_PLUGIN_MANAGER_PATH "$XDG_CONFIG_HOME/tmux/plugins/"
+setenv -g TMUX_PLUGIN_MANAGER_PATH "$XDG_CONFIG_HOME/tmux/plugins/"
 
 ## Plugins
 set -g @plugin 'tmux-plugins/tmux-continuum'
@@ -119,10 +118,10 @@ set -g @continuum-restore 'on'
 set -g @resurrect-strategy-vim 'session'
 set -g @resurrect-strategy-nvim 'session'
 # Save sessions before detaching
-unbind -T prefix d
-bind-key -T prefix d {
-	run-shell "$XDG_CONFIG_HOME/tmux/plugins/tmux-resurrect/scripts/save.sh";
-	detach-client
+unbind d
+bind d {
+	run "$XDG_CONFIG_HOME/tmux/plugins/tmux-resurrect/scripts/save.sh";
+	detach
 }
 
 ## Theming. Inspired by: