https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220924

--- Comment #3 from Kyle Evans <[email protected]> ---
I'll poke at the specifics later, but empty strings with grep(1) triggers a
match-all behavior for what I assume are POSIX reasons. Empty patterns are not
valid EREs or BREs- just some grep specific behavior.

My assumption at the moment is that we're just bailing out on the first file
since it's a match-all. Not at a machine to test it at the moment, though.

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