sorin-ionescu/prezto — pull request #378 by neersighted (2013-01-22 01:30:57+00:00)
Title: Improve Tmux startup logic.

Instead of creating a Tmux session, and then moving to the background session,
just create the background session if needed, and always attach to it.

This fixes the need for setting destroy-session on, and thus enables the use
of multiple background sessions.