Jeff King [off-list ref] writes:
I added the final test to show where we don't improve (the 1% there is
just lucky noise), but also as a regression test to make sure we're not
doing anything stupid like loading the commit multiple times when there
are several placeholders that need it.
Reported-by: Michael Haggerty <redacted>
Signed-off-by: Jeff King <redacted>
---
This benefits "rev-list --format=", as well, though there you can also
use things like "--parents" instead, which are already fast.
Quite pleased to see more work lazily done (and personally I am
happy to see Michael's name on the list---say Hi, I missed him).