Re: [PATCH v3 00/33] Add directory rename detection to git

Elijah Newren [off-list ref] writes:

Interesting; tbdiff looks cool.  Junio hasn't queued this series yet,
but it's easy enough to reconstruct the old one.  It does weigh in
pretty heavy, and I'm slighly worried about gmail mangling all the
lines, but I'm going to give it a shot anyway.  If it's too mangled,
I'll try to repost using git-send-email.  It does weigh in at over
1600 lines, so it's not small.

It seems that you have installed tbdiff correctly.  The below seems
to match what I saw when I queued this round, relative to the
previous one.

What I often do when I see a new round of patches is:

    $ git checkout en/rename-directory
    $ git checkout master... ;# detach at the base of the old
    $ git am -s mbox ;# take the new 
    $ git tbdiff ..@{-1} @{-1}..

to compare the old and new.  Often (but not with this topic) earlier
parts of the topic are identical between the old and the new, so I
may rebase the new to preserve the commit timestamp of the old one
when it happens after the above sequence of commands.  For example,
if I see these in tbdiff

    1: 7893bf1720 = 1: f17207893b commit #1
    2: c291293b2e = 2: 93b2ec2912 commit #2
    3: a7d3c870a3 ! 3: 87b5e236a1 commit #3
        @@ ... @@@

then we know up to commit #2 are the same as before, so I'd do

    $ git rebase --onto c29129eb2e 93b2ec2912

by using the two commit object names on the last "=" line in the
output.  Then, running the same tbdiff again:

    $ git tbdiff ..@{-1} @{-1}..

would now show the output starting from "commit #3".