relnotes: mention the merging of index and nodemap

crecord: remove toggleamend Previous commit removed its only calling site.

crecord: repurpose "a" key to toggle all selections (BC) I really don't like "a". I keep accidentally hitting it when I actually want "A", and then I'm suddenly in a state I don't want to be in. There's a big wall of text telling me that I've turned amend mode on or off (which one was I orginally in?), and this seems very useless. If I wanted to amend or not, I would have chosen that from the command-line, not change my mind after I've already started picking hunks apart. Furthermore, for most uses of the hunk selector (revert, uncommit, shelve/unshelve), this amend toggle doesn't make sense. It seems much better to repurpose this key to be a "weaker" version of "A". It toggles all selections. This is pretty harmless if hit accidentally, (can just hit "a" again to toggle everything and undo it), and has immediate visual feedback that something happened: all the x's and blank spaces get switched around. And unlike with amend, the current flipped state is also immediately visible without having to read a wall of text. I'm calling this a BC, however, because somewhere, someone out there has probably really fallen in love with the old use of "a" and will get angry that we took it away.

hgweb: fix error in docstring Despite the subtle semantic difference, this sentence really meant to say "overridden", not "overwritten".

crecord: rewrite help string to avoid mentioning "crecord" Despite its heritage, "crecord" is now mostly Mercurial-internal jargon. I find it better to call it "the curses hunk selector". Also slightly rewrote the part about which commands can use it. While I do believe that commit, shelve, and revert are the only commands in core that can use it, Evolve also adds at least amend and uncommit to the list.

update: add some tests for the status quo of morestatus on update conflicts Differential Revision: https://phab.mercurial-scm.org/D7666

typing: suppress a warning that mercurial.windows.checkosfilename is missing This function is used to check filename portability everwhere, so it isn't tucked into the windows.py module. I supposed the alternative is to move it and then alias it in `util`. I'm guessing it was done like this to save an import. Differential Revision: https://phab.mercurial-scm.org/D7677

typing: add an assertion to util.versiontuple Fixes the following warning: line 1177, in versiontuple: No attribute 'split' on None [attribute-error] In Optional[bytes] Differential Revision: https://phab.mercurial-scm.org/D7676

typing: add a couple of assertions to lrucachedict to help pytype Fixes the following warnings: line 1488, in pop: No attribute 'markempty' on None [attribute-error] In Optional[Union[Any, _lrucachenode, nothing]] line 1578, in popoldest: No attribute 'markempty' on None [attribute-error] In Optional[Union[Any, _lrucachenode, nothing]] Differential Revision: https://phab.mercurial-scm.org/D7674

util: rename a variable to avoid confusing pytype Fixes the following warning: line 1205, in f: No attribute 'append' on Dict[nothing, nothing] [attribute-error] In Union[Dict[nothing, nothing], list] Differential Revision: https://phab.mercurial-scm.org/D7673

pytype: suppress the import-error in util.py when importing re2 Differential Revision: https://phab.mercurial-scm.org/D7672

debugcommands: finish moving `extendeddateformats` from util to dateutil Caught by pytype. Differential Revision: https://phab.mercurial-scm.org/D7671

ui: convert exception data to bytes when printing chained exception info Caught by pytype. Differential Revision: https://phab.mercurial-scm.org/D7670

ui: use a context manager to handle file streams in edit() Differential Revision: https://phab.mercurial-scm.org/D7669

graft: reuse cmdutl.resolvecommitoptions() Differential Revision: https://phab.mercurial-scm.org/D7632

rebase: make rebase not crash if p1 == p2 != nullid While this shouldn't happen normally, some historical bugs can have caused this kind of commit to exist. Instead of crashing and having it be unobvious how to recover, let's try to continue on. Without this, we get an error like "ValueError: min() arg is an empty sequence" Differential Revision: https://phab.mercurial-scm.org/D7664

merge: add commands.merge.require-rev to require an argument to hg merge This is related to commands.rebase.requiredest, commands.update.requiredest, and commands.push.require-revs. Since it isn't really a "destination", I went with require-rev to be similar to push's require-revs. Differential Revision: https://phab.mercurial-scm.org/D7620

tests: make test-config-env.py a little less hacky Overriding os.path.isdir to always returns False is very confusing. Let's make it more explicit by specifically not returning any defaultrc/ configs. Differential Revision: https://phab.mercurial-scm.org/D7623

help: get helptext/ data from `resources` module if available For PyOxidizer, we need to read configs using the `resources` module. This patch makes it so we use that module if available (i.e. Python >= 3.7). It does that by adding a new `open_resource()` function to our `resourceutil` module. Tested by running `$PYTHON ./hg help pager` for each $PYTHON in {python2, python3.6, python3.7}. Differential Revision: https://phab.mercurial-scm.org/D7622

pycompat: allow pycompat.sysbytes() even if input already is bytes pycompat.sysstr() on py3 accepts an input that's already str (i.e. unicode). This patch makes it so pycompat.sysbytes() on py3 accepts an input that's already bytes. Allowing that makes it possible to do pycompat.sysbytes(fp.name) where fp.name is either bytes or unicode, as we'll get when fp can come from either open() or resources.open_binary(). Differential Revision: https://phab.mercurial-scm.org/D7621

merge with stable

rust-cpython: do not convert warning pattern to utf-8 bytes On Unix, both Rust Path and Mercurial expect a locale-dependent bytes, and we don't support Windows yet. Differential Revision: https://phab.mercurial-scm.org/D7614

rust-cpython: import utils::files::* function at module level IIRC, it's common in Rust to call functions with the module prefix. Differential Revision: https://phab.mercurial-scm.org/D7613

py3: send bytes from Rust-created warning patterns Python code expects bytes in both Python 2 and Python 3, so we should send bytes. Differential Revision: https://phab.mercurial-scm.org/D7612