nodemap: fix missing r-prefix on regular expression Looking at this regular expression, it's pretty obvious from reading it that it wanted to match literal ., but since the r was missing on the pattern it was matching any character. I guess we're just lucky nothing bad happened as a result. This was automatically fixed by pyupgrade, but I split it out into its own change because it seemed important. Differential Revision: https://phab.mercurial-scm.org/D8254

tests: use pyflakes module instead of pyflakes executable This results in that the pyflakes version specific to the configured Python version is used. This way, both the Python 2-specific and the Python 3-specific pyflakes are run by the test suite (depending on the configured Python version). For downstream projects which are using Mercurial’s test infrastructure and are not yet ported to Python 3 (e.g. hg-git) it ensures that the correct pyflakes version is run even when the system’s default pyflakes is the Python 3-specific one.

copies-tests: add a case where with merge with an overwritten files This is similar to the BF/FB case, but in this case, the other branch updated the file. So an actual merge happens and the two "independant" file history has to be merged. Differential Revision: https://phab.mercurial-scm.org/D8242

copies-tests: add a case where a file is deleted/added but with a merge This is a case similar to DB/BD, but in this case the other branch updated the file. So an actual merge happens and the two "independant" file history has to be merged. Differential Revision: https://phab.mercurial-scm.org/D8241

copies-tests: add a test with a rename overwriting another file This is a variation of the "BD" case, but this time, the file is not "new", it is overwritten by another file being renamed. Differential Revision: https://phab.mercurial-scm.org/D8240

copies-tests: add a `h` to the root commit (for chain merge tests) This will be useful for incoming new test cases. We need a new file to rename around. Differential Revision: https://phab.mercurial-scm.org/D8239

copies-tests: remove the final summary The more we add tests, the less useful it is. So after discussion with Martin, we decided to drop it. Differential Revision: https://phab.mercurial-scm.org/D8257

copies-tests: clarify the description of the EA/AE cases The previous description of the merge was just wrong. (It seems the result a non-updated copy-paste) Differential Revision: https://phab.mercurial-scm.org/D8238

copies-tests: update the analysis of the BD/DB cases After thinking more about it, the current change in output between the two merges is not due to an ambiguity, it is introduce by a bug in merge/commit that record a wrong file history. Fixing the bug should fix the output. In the meantime, we have a wrong behavior. In practice the bug is not in the merge code (who does the right things), but in the commit code (who get confused when recording the new file revision). Differential Revision: https://phab.mercurial-scm.org/D8237

copies-tests: swap two branch description They were swapped and now match their intended block. Differential Revision: https://phab.mercurial-scm.org/D8247