TMUX_IS_VIM="ps -o state= -o comm= -t '#{pane_tty}'| grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"

bind-key -n M-h if-shell "$TMUX_IS_VIM" "send-keys M-h" "select-pane -L"
bind-key -n M-j if-shell "$TMUX_IS_VIM" "send-keys M-j" "select-pane -D"
bind-key -n M-k if-shell "$TMUX_IS_VIM" "send-keys M-k" "select-pane -U"
bind-key -n M-l if-shell "$TMUX_IS_VIM" "send-keys M-l" "select-pane -R"

bind-key -T copy-mode-vi M-h select-pane -L
bind-key -T copy-mode-vi M-j select-pane -D
bind-key -T copy-mode-vi M-k select-pane -U
bind-key -T copy-mode-vi M-l select-pane -R

# vim: ft=tmux