Re: [PATCH v2 16/19] parallel-checkout: add tests for basic operations

> > +
> > +	# Check that the expected number of workers has been used. Note that it
> > +	# can be different than the requested number in two cases: when the
> > +	# quantity of entries to be checked out is less than the number of
> > +	# workers; and when the threshold has not been reached.
> > +	#
> > +	local workers_in_trace=$(grep "child_start\[.\+\] git checkout--helper" trace | wc -l) &&
>
> Do we use grep's \+ operator in other tests?  I thought we preferred to
> use the more portable *, but it may be that I'm out of date.