From: Philip Oakley <philipoakley@iee.org>
Date: Sun, 18 Sep 2016 19:37:31 GMT
Subject: Re: Finding a commit based on the diff index line?
Message-ID: <4BB675F0AED14A309DC90DDDB08F441B@PhilipOakley>
In-Reply-To: <FD07B781038A4C878F6D0152A4ECE580@PhilipOakley>

From: "Philip Oakley" <philipoakley@iee.org>
>> From: Junio C Hamano
>> Sent: Saturday, September 17, 2016 5:30 PM
>>
>> Does it count as simple to use pager's search feature in
>> "log --raw" output piped to it?
>>
>> Pardon typos & html; typed on a phone
>>
>
> The `log --raw` looks useful, though I think (IIUC) I also have a problem 
> that (obviously?) these commits are not linked behind any existing ref 
> (except maybe the reflogs which I'm not up to speed on).
>
For others that may be reading... The command I eventually ended up using to 
find old series was:

git reflog HEAD --grep-reflog='rebase -i (finish)' | cut -c1-7 | xargs -n1 
git quote

where the alias.quote = log -1 --pretty='tformat:%h (%s, %ad)' --date=short

I can then compare the dates of my corrective rebases to the patch 
submission dates to find the (local sha1 of) missing series.

> I had somehow hoped for some neat magic command or rev specifier that took 
> the revs as alternates to the `-- <paths>` in rev-parse or some such....

Though locating a commit based on a diff's index line does still feel to be 
something that should be possible.
>
> It's tricky curating old mistakes ;-)
>
> Thanks for the pointer.
>
>> On Sep 17, 2016 07:33, "Philip Oakley" <philipoakley@iee.org> wrote:
>>
>> > Hi,
>> >
>> > I'm curating some of my old patch series (i.e. doing some tidying up) 
>> > and
>> > I'm trying to determine the commits that generated some of my patches 
>> > so
>> > that I can see if I still have them after they were rebased (a 'name 
>> > that
>> > dangling branch' problem).
>> >
>> > Is there an easy way of finding the commit sha1 that contains the given 
>> > diff
>> > index line.
>> >
>> > For example.
>> > index fa05269..57033dd 100755
>> > or
>> > index 8ebcded..d9ab360 100644
>> >
>> > which both should get back to Jeff King's 36d6792 (t0006: test various 
>> > date
>> > formats, 2016-06-20).
>> >
>> > It feels like it is something that should already possible without a
>> > mini-script. We have the rev range which should limit the range to a 
>> > single
>> > commit, though if random blob revs were given the commit range would be
>> > 'scattered'.
>> >
>> >
>> > Is there a simple quick way of achieving this?
>> >
>> > --
>> > Philip
>
>