.editorconfig

revset: remove order information from tree (API)

Keeping `order` in tree makes AST operation harder. And there could be
invalid cases if trees could be generated and compounded freely, like:

  SetA(order=define) & SetB(order=define)
                                  ^^^^^^ couldn't be satisfied

This patch changes the code to calculate order on the fly, during tree
traversal. Optimization of reordering `and` arguments is preserved by
introducing a new internal operation `flipand`.

.. api::

   revset.stringset() now takes 'order' as the last argument.

Differential Revision: https://phab.mercurial-scm.org/D451

# See http://EditorConfig.org for the specification

root = true

[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true

[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true