py3: pass regex as bytes

py3: avoid using %r format on bytes Before the patch, the 'b' prefix appeared in the formatted string. Wrapping the bytes as pycompat.bytestr solves this problem. Eventually, I think that we should move away from using %r (like 975e517451a6 and 4d6019c0e0ef did), but that would change output of non-ASCII bytes on Python 2, so we can’t do it on the stable branch. Also, many places continue to use %r, so it would be a good idea to do the change all at once.

py3: use `%d` for int in % formatting On Python 3, `%s` is an alias to `%b`, which requires that the object implements `__bytes__()`, which is not the case for `int`.

py3: pass native string to urlreq.url2pathname() Of course, I’m not happy with the warning, but it’s better than crashing. Solving the problem properly is hard, and non-UTF-8 percent-encoded bytes in file URLs seem rare enough to block solving that all file URLs (even if not SVN-specific) will cause a crash.

py3: suppress DeprecationWarning about deprecated base64 module aliases base64.encodestring() / base64.decodestring() were renamed to base64.encodebytes() / base64.decodebytes() in Python 3. The old names still worked, but raised a DeprecationWarning.

py3: use `pycompat.ziplist()`

py3: use `%d` for int in % formatting On Python 3, `%s` is an alias to `%b`, which requires that the object implements `__bytes__()`, which is not the case for `int`.

py3: fix bytes iteration

py3: unbyteify arguments to warnings.filterwarnings() This fixes a crash when trying to import the convert extension on Python 3.

fuzz: add config knob for PYTHON_CONFIG_FLAGS I'll clean this up once we get oss-fuzz to use Python 3.8 instead of 2.7, but for now we need a way to evolve the flags passed to python-config in lockstep with the Python version. Yuck. Differential Revision: https://phab.mercurial-scm.org/D8637