D441: revset: optimize "draft() & ::x" pattern

[yuja (Yuya Nishihara)]

yuja added inline comments.

INLINE COMMENTS

> quark wrote in revsetlang.py:492
> Yes! That's much shorter (I had to copy the trees from debugshell) and more robust (no fragile `len(x) >= 3` handling).
> 
> For performance concerns, I think it's fine. Practically, revset parsing is hardly a bottleneck. With chg, `_treecache` could be pre-populated.

I'll rebase my patches then. I'm sure that isn't trivial because I introduced the order flag.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D441

To: quark, #hg-reviewers
Cc: yuja, martinvonz, mercurial-devel