Quoting doesn't appear to work either:
bind-key '\' split-window -h -c '#{pane_current_path}'-- You received this message because you are subscribed to the Google Groups "tmux-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/tmux-users/0a2d72bb-913c-4fe3-b85c-3c89cf14e532%40googlegroups.com.
