[bug #20978] "the shell is already running a command"

[Thomas Zajic <INVALID NOREPLY gnu org>]

Follow-up Comment #1, bug #20978 (project mc):

It's rather easy to reproduce, in fact:

Press Ctrl-o to enter the subshell
Press Space, but don't hit Enter
Press Ctrl-o to leave the subshell
Enter "ls" or some other command, hit Enter
Enjoy the error message ;-)

I *think* there's been some long discussion about this already, as it's not
always that easy to determine whether the subshell is actually running (or has
already finished running) a command or not - I could be wrong, though.

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