处理Emacs shell和Cygwin下的信号

Question

I use the Cygwin version of Emacs. Things are just fine except for some quirks when using the Emacs shell (Mx shell). The Emacs shell is using Cygwin's bash. The biggest problem right now is not being able to send a SIGINT to the shell to interrupt the currently running command. For example, I frequently use ssh to logon to a remote host, then "tail -f" a file. I can't break out of the tail command. When using the Emacs shell under Unix/Linux, pressing Cc Cc (comint-interrupt-subjob) will send SIGINT to the shell (bash), and the tail command (or whatever) will be interrupted as expected.

For a quick and easy example, run "Mx shell", then "sleep 30", and try to interrupt the sleep command. You can Quit (Cg) and do other things within Emacs, but the Emacs shell is hung for the duration of the sleep command.

I have a feeling this has something to do with the difference in signal sending/handling within Cygwin, as opposed to signals within Unix. Since the Cygwin bash shell responds appropriately to signals, I have to assume there is some way to get Emacs to send a SIGINT to the bash shell in a way that it understands. Any ideas?

By the way, I have used Emacs eshell, term and ansi-term, but I prefer shell for a number of reasons. I also use mintty and GNU Screen, and have no complaints there, but using Emacs shell and treating my terminal sessions like text files is a wonderful thing.

Answer 1

I think this is more of a problem with the Command Prompt as a tty. I had problems sending the correct signals to the emacs shell inside Cygwin and Cygwin in general, so I found this program called puttycyg. Putty has a great shell and I wanted something like that for Cygwin, so I use this: http://code.google.com/p/puttycyg/ .

I created a shortcut on my desktop to make it easier to get to. You can create a session and call it "cygwin" from there and then make a shortcut to the executable and use -load "cygwin" .