Re: git-diff-tree rename detection for single file

From: Junio C Hamano <junkio@cox.net>
Date: Oct 19, 2005, 05:20 UTC
Message-ID: <7virvuhylm.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <Pine.LNX.4.64.0510182004100.3369@g5.osdl.org>

Linus Torvalds <torvalds@osdl.org> writes:

> See what I'm saying?
> ...
> The performance impact of pruning the pathnames _before_ diffing them was 
> absolutely staggering. You couldn't reasonably do a "git-whatchanged -p"

Yes, I understood and agreed to that logic on May 27th. That's why the message you are responding said we could add a new flag, to give the choice to the user to accept full-tree scan.

The "diff-tree --stdin that follows rename history" example might want to have some change in either the core side of diff, or in the rev-list. It may help to have both. I still haven't thought through the issues.

BTW, I really liked your example that piped multiple diff-trees together. That is a neat trick.