How do I prevent tmux from wrapping around when searching?

tmux now has a window option wrap-search:

wrap-search [on | off]

If this option is set, searches will wrap around the end of the pane contents. The default is on.

When this question was asked, tmux didn't have an appropriate setting, but I prepared a patch based on tmux 1.6.

Maybe worth pointing out that this is now (definitely as of tmux 1.9a since that's what I'm on) available via the wrap-search setting:

$ man tmux | grep -B1 -A1 'will wrap'
         wrap-search [on | off]
                 If this option is set, searches will wrap around the end
                 of the pane contents.  The default is on.