Re: [PATCH] patch-ids.c: cache patch IDs in a notes tree

John Keeping [off-list ref] writes:

The caching layer could also introduce false positives though, which is
more serious.  If you cache patch IDs with a pathspec restriction ...

What?  What business does patch-id have with pathspec-limited diff
generation?  You do not rebase or cherry-pick with pathspec, so
unless you are populating the patch-id cache at a wrong point (like,
say whenevern "git show $commit" is run), I am not sure why pathspec
limit becomes even an issue.