Re: git-diff-tree inordinately (O(M*N)) slow on files with many changes

> 
> Davide? I'm quoting the whole report, because I suspect you don't follow 
> the git lists, and this is all original libxdiff code.
> 
> Jim: the annotation failure _may_ just be due to a "valid" diff change 
> (there is not always a unique correct answer for a diff, and so two 
> different diff algorithms can validly give two different answers, which 
> will also mean that git-annotate/blame would give different explanations). 
> 
> But it could certainly also be that you just broke the diffs entirely, so 
> I would like to wait for Davide to comment on your diff before Junio 
> should apply it. 
> 
> Others may be intimately familiar with the diff algorithms too, of course. 
> It just scares me personally ;)