absorb: make `--edit-lines` imply `--apply-changes` One of our users tried to use `hg absorb -e` but it seemed that it would only bring up the editor if there were no changes the command could automatically detect destination for. I spent probably half an hour debugging why it worked that way. I finally figured out that it does bring up the editor, but you have to answer "yes" to the "apply changes" prompt *first*. That seems very unintuitive. If the user wants to edit the changes, there seems to be little reason to present them with a prompt first, so let's have `-e/--edit-lines` imply `-a/--apply-changes`. All the tests using `-e` also already used `-a`. I changed them to rely on the implied `-a` so we get coverage of that. Differential Revision: https://phab.mercurial-scm.org/D12550

branchmap: add a test that shows bad interaction with strip Differential Revision: https://phab.mercurial-scm.org/D12549

rhg: refactor to pass argv down, instead of caling args_os() This refactoring makes it easy to patch some command-line preprocessing into rhg. We use this to support using rhg as a shebang interpreter, for example. Differential Revision: https://phab.mercurial-scm.org/D12543

narrow: support debugupgraderepo Differential Revision: https://phab.mercurial-scm.org/D12542

procutil: avoid `+= None` when writing to full std{err,out} descriptor on py3 The write function returns `None` if there was no room to write the given data[1]. I don't like that this is effectively an infinite loop if there's never any progress emptying the underlying buffer, but we're no worse off than before, and it fixes random stacktrace popups seen in the py3 build of TortoiseHg. [1] https://docs.python.org/3/library/io.html#io.RawIOBase.write Differential Revision: https://phab.mercurial-scm.org/D12555

amend: don't remove unselected removals from memctx When there are removed files in the working copy and they are not selected to be amended into the parent, the `filectxfn` we create for the `memctx` would still return `None` before this patch. That's clearly incorrect; we should return the `filectx` from the unamended commit. Somehow it seems to not matter much except for the case with copies stored in changesets. Thanks to Kyle Lippincott for doing all the debugging and identifying the fix for this issue. Differential Revision: https://phab.mercurial-scm.org/D12573

tests: demonstrate crash on partial amend with copies in changesets See the fix in the next patch for explanation. Differential Revision: https://phab.mercurial-scm.org/D12572

rust-revlog: add methods for getting parent revs and entries Differential Revision: https://phab.mercurial-scm.org/D12442