Question: Usually `tmux` will only show as much output as however many rows my terminal currently displays. And then when I detach it, it clears all of its content. I know how to look at scrollback (`ctrl+A`, `[`, `k`, ...), but how can I configure tmux to just print all its output to terminal, as if I wasn't using it at all?

I like `tmux` because I'm awful at remembering to `nohup` certain tasks, and because it makes viewing the output of long-running jobs easier. But I would like to be able to view its scrollback more naturally, by simply *scrolling back* in iTerm2.

Alternatively, if there's a way to do this in `screen`, I can use that too.

Answer: 
iTerm2 build 1.0.0.20130302 has an preference which enables it to capture scrollback even when a so-called hard status line is present:

![iTerm2 preferences pane](https://i.stack.imgur.com/QS1vB.png)

Works for me, tested with `tmux` v1.8.
In my case, just putting `set-option -g status off` in `.tmux.conf` allows to leave the scrollback in the terminal. But you lose the status bar.