global: use raw strings for __slots__ Otherwise Python 2 will coerce unicode to str at module load time. We don't like automatic string coercions. Differential Revision: https://phab.mercurial-scm.org/D6046

absorb: run cleanupnodes() within transaction also when not using obsmarkers scmutil.cleanupnodes() schedules stripping to be done after the current transaction, so we can safely run it within the transaction. This also means that the phase will be updated within the transaction, which I believe means that the initial (possibly incorrect) phase will not visible. Differential Revision: https://phab.mercurial-scm.org/D6037

py3: pass a str to getpass.getpass() Otherwise I see `password: b''` on the prompt. # skip-blame because just prefix Differential Revision: https://phab.mercurial-scm.org/D6041

py3: port things from chgserver.py I have installed mercurial on my personal laptop using Python 3.7. I also have hg aliased to chg. Before this commit, `hg version` didn't work. After this patch, things are better and now chg works. Differential Revision: https://phab.mercurial-scm.org/D6040

py3: make sure return value of posix.groupname() is bytes Differential Revision: https://phab.mercurial-scm.org/D6039

contrib: make check-code.py check code fragments embedded in test scripts

contrib: add line offset information to file check function of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. This information will be useful to show correct line number in an actual file for errors detected in code fragments embedded in *.t test scripts.