On Fri, Aug 26, 2016 at 01:56:53PM +0200, Greg KH wrote:
> On Fri, Aug 26, 2016 at 12:42:05PM +0100, James Hogan wrote:
> > FWIW I have a git alias that blames a git diff or commit (I think based
> > on an old version of [1] with some fixes). That doesn't necessarily tell
> > you where a problem was introduced, but it sure can help if the problem
> > was introduced nearby the fix (and for fixup commits before a rebase).
> > 
> > Food for thought if nothing else.
> > 
> > E.g. 
> > 
> > $ git blame-show v4.8-rc2
> > commit 694d0d0bb2030d2e36df73e2d23d5770511dbc8d
> > Author:     Linus Torvalds <torvalds@linux-foundation.org>
> > AuthorDate: Sun Aug 14 19:11:36 2016 -0700
> > Commit:     Linus Torvalds <torvalds@linux-foundation.org>
> > CommitDate: Sun Aug 14 19:11:36 2016 -0700
> > 
> >     Linux 4.8-rc2
> > 
> > diff --git a/Makefile b/Makefile
> > index 8c504f324154..5c18baad7218 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -1,7 +1,7 @@
> > Blaming lines:   0% (7/1684), done.
> > Blaming lines:   0% (7/1684), done.
> >   c517d838eb7d0 (Linus Torvalds   VERSION = 4
> >   29b4817d4018d (Linus Torvalds   PATCHLEVEL = 8
> >   55922c9d1b84b (Linus Torvalds   SUBLEVEL = 0
> > - 29b4817d4018d (Linus Torvalds  -EXTRAVERSION = -rc1
> > + 694d0d0bb2030 (Linus Torvalds  +EXTRAVERSION = -rc2
> >   1a695a905c185 (Linus Torvalds   NAME = Psychotic Stoned Sheep
> >   ^1da177e4c3f4 (Linus Torvalds   
> >   ^1da177e4c3f4 (Linus Torvalds   # *DOCUMENTATION*
> > 
> > Cheers
> > James
> > 
> > [1] https://github.com/dmnd/git-diff-blame/blob/master/git-diff-blame
> 
> Oooh, nice!  Care to push this "upstream" to get it merged into git for
> everyone to use?  It looks helpful to me.

I wasn't planning to, mainly because I'm not the author and presumed
it'd need rewriting to work properly/efficiently with git rather than
just being a wrapper script.

I'd love to see that functionality in git though, maybe as a --blame
argument to git diff/show

Cheers
James