Why does tmux erase terminal contents on editor exit?

Say I'm running tmux and use "ls" to get something on the screen. Then I enter Vim to edit some file.开发者_开发百科 After exiting Vim, tmux erases whatever text is above the bash prompt (not like the clear command since the prompt stays in the same place).

Is there a way to prevent this behavior? I'm using tmux 1.3 in Terminal.app on OS X.

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If your version of tmux has this option, add this line to your ~/.tmux.conf:

set-window-option -g alternate-screen on

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Try putting this in your .vimrc file:

set t_ti= t_te=