Re: [PATCH 19/19] hack: watchman/untracked cache mashup

> On Thu, Mar 17, 2016 at 7:56 AM, David Turner <
> dturner@twopensource.com> wrote:
> > > So if we detect an updated file that's not in the index, we are
> > > prepared to invalidate that path, correct? We may invalidate more
> > > than
> > > necessary if that's true. Imagine a.o is already ignored. If it's
> > > rebuilt, we should not need to update untracked cache.
> > 
> > Yes, that's true.  But it would be true with the mtime system too.
> > This
> > is no worse, even if it's no better.  In-tree builds are a hard
> > case to
> > support, and I'm totally OK with a system that encourages out-of
> > -tree
> > builds.
> > 
> > We could check if it's ignored, but then if someone changes their
> > gitignore, we could be wrong.
> > 
> > Or we could suggest that people make their watchmanignore match
> > their
> > gitignore.
> 
> So your purpose is to reduce stat() on those "quiet" directories?