I'm running NT4 SP6. I ran through your examples and my results match yours (visa vie shell vs non-shell) btw, I used both tcsh and cmd and got the same results. I also launched sleep from perl (start-process "shell" null "perl" "t.pl") And the interupt killed the perl and the sleep processes so it seems to be some interaction with the shell (but this is definately an extrapolation :-) -----Original Message----- From: Adrian Aichner [mailto:aichner＠ecf.teradyne.com] Sent: Saturday, May 06, 2000 1:00 PM To: Charlie Fineman Cc: 'Gunnar Evermann'; Adrian Aichner; Ben Wing; XEmacs Beta List; XEmacs NT List Subject: Re: (interrup-process ...) broken on NT native Charlie> Here are some data points from 21.2 build32 Charlie, what is yourr OS type and version? I have NT4 SP5. Following is what I experience on my system: Charlie> - interrupt-process has no effect Well, this isn't strictly true. It works fine for processes not run under a shell ("cmd" in my case). If you evaluate these manually one-by-one (C-x C-e (eval-last-sexp)), you should not see the sleep process in task manager. (start-process "sleepy" nil "sleep" "60") (message "before: %S" (get-process "sleepy")) (interrupt-process "sleepy") (message "after: %S" (get-process "sleepy")) What does not work is interrupting a process runnning under a "cmd" shell: (start-process "shell" nil "cmd" "/c" "sleep" "5") (message "before: %S" (get-process "shell")) (interrupt-process "shell" t) (message "after: %S" (get-process "shell")) Neither "cmd" nor "sleep" get interrupted. Charlie> - kill-process prints the exit message in the process Charlie> buffer and the process no longer shows up in Charlie> list-processes but the NT process still shows up in the Charlie> Task Manager Not for me. Processes not running as sub-processes of a shell are really killed. Charlie> - delete-process has the same result as kill-process (no Charlie> suprise since the doc seems to indicate that it calls Charlie> kill-process) See above. Charlie> - killing the process from the Task Manager seems to work Charlie> fine (i.e. emacs does notice it) Yep, same here. Charlie> -----Original Message----- Charlie> From: Gunnar Evermann [mailto:ge204＠eng.cam.ac.uk] Charlie> Sent: Saturday, May 06, 2000 10:52 AM Charlie> To: Adrian Aichner Charlie> Cc: Ben Wing; XEmacs Beta List; XEmacs NT List Charlie> Subject: Re: (interrup-process ...) broken on NT native Charlie> Have you tried using Fdelete_process instead of Finterrupt_process? Charlie> random other idea: Can you kill the subprocess from outside xemacs and Charlie> see whether we at least notice that? Charlie> Gunnar