D451: [RFC] revset: remove order information from tree

[quark (Jun Wu)]

quark added a subscriber: yuja.
quark added a comment.


  @yuja Let me know if this can simplify `matchtree`, `buildtree` implementation.

INLINE COMMENTS

> test-revset.t:2502
>  
>    $ try -p optimized '(reverse(contains("a")) + 2) & 0:2'
>    * optimized:

The new code is less efficient here. I guess we it might be solvable by having a `_reverseand` operator that `_optimize` may use.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D451

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