extensions: add wrappedfunction() context manager Several extensions exist that temporarily want to wrap a function (at least narrowhg, any many of the extensions in hg-experimental). That's why we have the unwrapfunction() that was introduced in 19578bb84731 (extensions: add unwrapfunction to undo wrapfunction, 2016-08-10). This patch adds a simple wrappedfunction() that returns a context manager. Differential Revision: https://phab.mercurial-scm.org/D472

mdiff: add a --ignore-space-at-eol option Add an option that only ignores whitespaces at EOL. The name of the option is the same as Git. .. feature:: Added `--ignore-space-at-eol` diff option to ignore whitespace differences at line endings. Differential Revision: https://phab.mercurial-scm.org/D422

revset: improve documentation about ordering handling The old documentation is a bit confusing. Namely, it's unclear whether `define` means "I should ALWAYS define a new order", or "I should SOMETIMES define a new order", and if it's the latter, what's the difference between `define` and `any`? This patch clarifies that and adds more examples. Differential Revision: https://phab.mercurial-scm.org/D523

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