Re: Blamming a diff between two commits?

> Jan Hudec <bulb@ucw.cz> writes:
> > On Tue, Feb 17, 2009 at 10:16:17 -0300, Samuel Lucas Vaz de Mello wrote:
> >> Hi,
> >> 
> >> Is there any way to git blame (or annotate) a diff between two commits?
> >> [...]
> >
> > What about doing a diff of the blames? It should do the same thing (except
> > the +/- would be at the begining of the lines). Well, not exactly, because if
> > there was a change, that was reverted again, blames would change, so it would
> > appear here, but that's probably rare enough to ignore (if you don't even
> > want to see it rather than not).
> 
> I don't think that would do it.
> 
> Suppose I have the following history (in a one-line file) :
> 
> revision: R1 -> R2 -> R3 -> R4 -> R5 -> R6
> content:  A  -> B  -> B  -> C  -> D  -> E 
> 
> If I do a blame at revision R3, I'll get
> 
> R2 B
> 
> Then, at revision R6, I'd get
> 
> R6 E
> 
> so the diff will be
> 
> - R2 B
> + R6 E
> 
> while the original poster actually wanted
> 
> - R3 B
> + R6 E
> 
> In the first case, the annotation for - lines tell where the removed
> line had been introduced before, while the second case tells up to
> which revision the line has been existing (or, it could show the
> revision which removed it, R4 here).