This seems to have worked for me:

http://stackoverflow.com/a/24973743/35003

I had the same problem using tmux 1.8, iTerm2, and reattach-to-user-namespace. I ran across a tmux config binding that fixes the problem: it explicitly copies the last buffer selection to the clipboard:

bind-key q run "tmux save-buffer - | reattach-to-user-namespace pbcopy"

Put it in your ~/.tmux.conf, and then C-b q will pull everything into your clipboard after a selection.

This seems to have worked for me:

https://stackoverflow.com/a/24973743/35003

I had the same problem using tmux 1.8, iTerm2, and reattach-to-user-namespace. I ran across a tmux config binding that fixes the problem: it explicitly copies the last buffer selection to the clipboard:

bind-key q run "tmux save-buffer - | reattach-to-user-namespace pbcopy"

Put it in your ~/.tmux.conf, and then C-b q will pull everything into your clipboard after a selection.