Re: [PATCH 1/3] test-terminal: give the child an empty stdin TTY

Jonathan Nieder [off-list ref] writes:

Sorry, I was thinking narrowly about the "git log" tests in
t7006-pager.sh.  I was saying that there, the fact that
lib-terminal.sh creates an environment in which stdin is not
guaranteed to be a terminal is a feature, not a bug, since it improves
the test coverage (and I tend to find the "stdin not a tty" case more
interesting).

I agree with Thomas's objective of giving ttys to all the streams of
process being tested by default to emulate the usage better, but I also
think being able to test some of the streams redirected to non-tty a good
feature to have in test-terminal driver. And I do not think these two have
to be either-or proposition.

I do not think "Run 'git log' as if the user is on an interactive
terminal, but has plugged /dev/null to its standard input" can be spelled
like this:

    test-terminal git log </dev/null

but test-terminal could learn an equivalent feature perhaps from the
command line, no?  Perhaps like

    test-terminal --stdin=/dev/null git log
    test-terminal --stdout=actual --stderr=error git shortlog

or somesuch?