Quick way to scroll up in the pane to the previous occurrence of prompt

Hi, I can probably do a reverse search of a constant string in my prompt to reach the previous occurrence of prompt, the place in pane history where I last typed anything at command line. But the constant string in my prompt is just 2 characters. Is there a better way to do this? Can a "line num

Stuck in copy-mode

I've got an odd problem: since my last reboot of Yosemite, whenever I invoke copy mode, tmux does not respond to any key presses except for the prefix key. I'm running tmux 1.9a. Prior to the reboot, it was working fine, and I can't see anything from my end that actually changed. Has anyone ever ex