tmux: Copy multi-click selection into primary

Also split the MouseDragEnd1Pane binding so that the full xclip
arguments can be written out to stay consistent.

.config/tmux/tmux.conf

@@ -22,13 +22,23 @@ set -g prefix C-a
 bind C-a send-prefix
 
 # Copy selection into primary selection (without aborting)
-bind -T copy-mode-vi MouseDragEnd1Pane send -X copy-pipe-no-clear "xclip -se p"
+bind -T copy-mode-vi MouseDragEnd1Pane {
+	send -X copy-pipe-no-clear "xclip -selection primary"
+}
 
 # Select word or line on double or triple click respectively (w/o aborting).
 # (These are the defaults  w/o the `run -d 0.3; send -X copy-pipe-and-cancel`)
-bind -T copy-mode-vi SecondClick1Pane select-pane -t= \; send -X select-word
+bind -T copy-mode-vi SecondClick1Pane {
-bind -T copy-mode-vi TripleClick1Pane select-pane -t= \; send -X select-line
+	select-pane -t=
-bind -n DoubleClick1Pane {
+	send -X select-word
+	send -X pipe-no-clear "xclip -selection primary"
+}
+bind -T copy-mode-vi TripleClick1Pane {
+	select-pane -t=
+	send -X select-line
+	send -X pipe-no-clear "xclip -selection primary"
+}
+bind -n SecondClick1Pane {
 	select-pane -t=
 	if -F "#{||:#{pane_in_mode},#{mouse_any_flag}}" {
 		send -M
@@ -36,6 +46,7 @@ bind -n DoubleClick1Pane {
 		copy-mode
 		send -X select-word
 	}
+	send -X pipe-no-clear "xclip -selection primary"
 }
 bind -n TripleClick1Pane {
 	select-pane -t=
@@ -45,6 +56,7 @@ bind -n TripleClick1Pane {
 		copy-mode
 		send -X select-line
 	}
+	send -X pipe-no-clear "xclip -selection primary"
 }
 
 # Scroll up 5 lines when entering copy-mode through the mouse wheel, send 5x`up`