[PATCH RFC] revset: completely ignore "null" symbol in new-style query (BC)

[Matt Mackall]

On Sun, 2015-01-04 at 12:21 +0900, Yuya Nishihara wrote:
> This depends on my previous patch "revset: drop pre-lazyset optimization for
> stringset of subset == entire repo."  I want to know if "null" revision is
> supported in revset.

We probably do want to support null. It's one of the primary barriers to
eliminating old-style queries. We also want to eventually support a
symbol/identifier that means "the working copy".

-- 
Mathematics is the supreme nostalgia of our time.