Re: ksh93: pipelines vs. job control

Op 13-05-2024 om 15:35 schreef Christian Weisgerber:

... and you're stuck.  There's no shell prompt, so you can't bg or fg
anything, intr (^C) or quit (^\) don't help, and there's no tty
control character to continue a suspended process (group).
 You need to take radical measures like hanging up, or sending a
SIGCONT or SIGKILL from a different terminal.
 I can't quite tell if this behavior constitutes a bug, but it seems
to follow from the design decision to not run the last command of
a pipeline in a subshell.  And it can trap the unwary.
  A more minimal example:
    $ /bin/sleep 10 | read
   ^Z

In my view, this is certainly a bug. The shell should not hang under any circumstances. I've filed it under:
https://github.com/ksh93/ksh/issues/750
and we'll try to find a fix or workaround for it eventually.
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