py3: silence the final IOError by closing stdout/err slightly early Fixes the following test failure: $ hg status >/dev/full abort: No space left on device Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' ... OSError: [Errno 28] No space left on device [120]

py3: conditionalize initialization of stdio flags Since Python 3 doesn't depend on the stdio of libc, there should be no need to set O_BINARY flag on Windows.

test-command-template: glob out detailed "invalid escape" message Python 3 also reports the position where an invalid escape found.

templater: byte-stringify dict/list values before passing to default format bytestr() is applied only when no custom format string like '%d' is specified.

templater: allow dynamically switching the default dict/list formatting '%s' doesn't work nicely on Python 3 because many Python types don't implement __bytes__().

py3: use util.forcevytestr to convert error to bytes Differential Revision: https://phab.mercurial-scm.org/D2585

util: report integer result from write() Python 2 sometimes returns None from write() calls. Python 3 doesn't. This will make test output inconsistent between Python 2 and 3. So let's paper over the differences by converting None to the length of the result string. Differential Revision: https://phab.mercurial-scm.org/D2584

util: log readinto() I/O Differential Revision: https://phab.mercurial-scm.org/D2583

util: teach escapedata() about bytearray re.map doesn't seem to know about bytearray (at least in Python 2). Cast bytearray to a bytes to work around this inconvenience. Differential Revision: https://phab.mercurial-scm.org/D2582

sshpeer: don't read(0) read(0) is essentially a no-op. Let's avoid the function call, overhead, and extra test output by not performing it. Differential Revision: https://phab.mercurial-scm.org/D2581