Bug in csh? (exec v. job control)

[Greg Noel]

There seems to be a bug in the way the C shell's exec function interacts
with job control.  The quickest way to show it:
	-  Run the C shell and make sure that the SHELL environment variable
	   is set to /bin/csh.
	-  type "vi garbage-file" to get a program that will create a shell.
	-  type ":sh" to get a shell.  The C shell should prompt you.
	-  type "exec echo foo" -- actually, exec any program.  In theory,
	   this should run the specified program and then return to the editor.

Now tell me, why was the editor stopped with a "tty output"?
-- 
-- Greg Noel, NCR Torrey Pines       Greg at ncr-tp.UUCP or Greg at nosc.ARPA