hung when use ctrl+s

[fly542]

1. use \t open search window
2. use ctrl+j select open file
3. use ctrl+s to open selected file
4. now hung

the terminal I used is xshell5, and operating system is centos7.1

[wincent]

From the docs:

If you find that <C-s> also doesn't work the most likely explanation is that
XON/XOFF flow control is enabled; this is the default in many environments.
This means that when you press <C-s> all input to the terminal is suspended
until you release it by hitting <C-q>. While input is suspended you may think
your terminal has frozen, but it hasn't.

To disable flow control, add the following to your `.zshrc` or
`.bash_profile`:

  stty -ixon -ixoff

See the `stty` man page for more details.