Jeff King [off-list ref] writes:
I think this is reasonable, especially with the feature in patch 6 to
tell the caller they're doing it wrong, instead of just silently
producing nonsense results.
Junio, if you haven't been following closely, this can replace my patch
from jk/perf-installed-fix.
I did not pick up v2 or earlier as it wasn't clear what the
resolution would be, but I agree that this round looks sensible.
Thanks for the hint; very very much appreciated.