Hi,

On Tue, 10 Jan 2006, Linus Torvalds wrote:

So having multiple bad commits is _never_ interesting.

Okay, I got it. A bug is supposed to be inherited by *all* its 
descendants. Good.

I have to keep in mind that a commit is not actually a patch set, but can 
be two or more (in case of a merge). So, a bug can be present in a 
development line for a long, long time, but be visible only after a merge. 
Since that commit can be compared to at least two trees, one of these 
diffs must show the bug.

Thanks,
Dscho