-bind-key y capture-pane -J \; save-buffer /tmp/tmux-buffer \; split-window 'vim /tmp/tmux-buffer' \; delete-buffer
-bind-key Y capture-pane -J -S - -E - \; save-buffer /tmp/tmux-buffer \; split-window 'vim /tmp/tmux-buffer' \; delete-buffer
+bind-key y capture-pane -J \; save-buffer /tmp/tmux-buffer \; split-window 'vim -c "set listchars=" -c "match ExtraWhitespace //" /tmp/tmux-buffer' \; delete-buffer
+bind-key Y capture-pane -J -S - -E - \; save-buffer /tmp/tmux-buffer \; split-window 'vim -c "set listchars=" -c "match ExtraWhitespace //" /tmp/tmux-buffer' \; delete-buffer