merge: back out changeset a4ca0610c754 (parents order when grafting a merge) Turns out it's not enough to just swap parents, because when we do, there are unexpected bad side effects, such as a tracked file becoming untracked. These side effects need more code to be handled properly, but it's not written yet. Let's back this feature out from stable for now and some day implement it on default instead.

rust-hgpath: replace all paths and filenames with HgPath/HgPathBuf Differential Revision: https://phab.mercurial-scm.org/D6774

rust-hgpath: add HgPath and HgPathBuf structs to encapsulate handling of paths This change is a direct consequence of this discussion on the mailing list: https://www.mercurial-scm.org/pipermail/mercurial-devel/2019-August/133574.html The implementations of `HgPath` and `HgPathBuf` are, for the most part, taken directly from `OsStr` and `OsString` respectively from the standard library. What this change does *not* yet do is implement the Windows MBCS to WTF8 conversion, but it lays the basis for a very flexible interface for paths. Differential Revision: https://phab.mercurial-scm.org/D6773

wireprototypes: clarify documentation of getbundle argument types It seems like it was a mix of what the Python code would see and what was sent over the wire. I've tried to clarify both the type seen in Python and how it's transmitted. Differential Revision: https://phab.mercurial-scm.org/D6871

merge with stable

merge: respect parents order when using `graft` on a merge, this time for real See a4ca0610c754. potherp1 is a boolean variable that means "pother is ctx.p1", and parents is naturally [ctx.p1, ctx.p2]. pctx is always removed from parents, so if pctx is parents[0], then we end up using parents[1] as pother. To be true to its name, potherp1 should then be True only when pctx is at parents[1].

py3: don't double-convert "opts" to bytes The "opts" are already converted to bytes at the beginning of the function. Doing it twice results in a crash, which makes test-uncommit.t fail. The extra call was added recently, in ff1ff2aae132 (uncommit: add support to modify the commit message and date, 2019-09-07). test-uncommit.t passes again after this patch. Differential Revision: https://phab.mercurial-scm.org/D6864

py3: byte-prefix sanitisation regexes in phabricator.py So it doesn't die with "TypeError: cannot use a string pattern on a bytes-like object". Differential Revision: https://phab.mercurial-scm.org/D6863

py3: pass a bytestring into querydrev instead of a string that'll TypeError This was a regression I introduced in c19d259fd6ad. When the string gets to the memoryview in _tokenize under py3 it'll die. Differential Revision: https://phab.mercurial-scm.org/D6869

py3: add test demonstrating TypeError when phabsending skips unchanged commits Skipping can currently only happen with `--no-amend`, so this isn't a usual configuration. Differential Revision: https://phab.mercurial-scm.org/D6868