CODEWITHSUNDEEP
emacs
limp_chimp
limp_chimp

Reputation: 15163

ansi-term hangs on C-s

When I type C-s using ansi-term in emacs, the shell becomes unresponsive. I can move the cursor around in the shell but I can't type anything. Is this some sort of obscure "feature", or is it a bug? How can I get around it?

Upvotes: 0

Views: 135

Answers (1)

Gilles 'SO- stop being evil'
Gilles 'SO- stop being evil'

Reputation: 107759

It's an obscure feature: XON/XOFF flow control. C-s tells the computer to stop sending data to the terminal, because the terminal can't print or display the data as fast as the serial line is sending it. It made a lot of sense in the 1970s, but now it's pretty useless.

Press C-q to tell the computer to send data again. Press C-v C-s to send a C-s character to the application, and likewise for C-q.

If you want to turn off this feature, put stty -ixon in your shell startup file (e.g. ~/.bashrc). I don't know of a way to turn it off automatically by configuring ansi-term itself.

Upvotes: 1

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