Joshua Jensen <> writes:

> Background: To tie Perforce changelists to Git commits, I add a note
> to a commit with the form "P4@123456".  Later, I use the note to sync
> down the closest Perforce changelist matching the Git commit.
> I search for these notes by getting a list of revisions:
>         git rev-list --max-count=1000
> I iterate those revisions and run git show and grep on each:
>         git show -s --format=%N%n%s --show-notes=p4notes COMMIT
> For short runs, this isn't so bad.  For longer runs of commits (I just
> walked through approximately 100), it takes a long time. Running 'git
> show' is costing me about 7/10 of second, presumably because I am on
> Windows.

Is there any particular reason you do that as two separate steps?
It would feel more natural, at least to me, to do something along
the lines of

        git log --show-notes=p4notes -1000

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