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py3: do not reimplement Abort.__str__() on Python 2
It isn't necessary on Python 2, and the default implementation should be
better than our BaseException_str() clone.
tests: write out file using bytes I/O
The encoding of sys.stdout varies between Python versions. So
using a one-liner to write a file from a Unicode string is not
deterministic.
This commit writes out the file using bytes I/O to ensure we
have exactly the bytes we want in the file.
This change fixes a test failure in Python 3.5/3.6.
Differential Revision: https://phab.mercurial-scm.org/D7226
import-checker: open all source files as utf-8
Before, we opened in text mode and used the default encoding
to interpret the bytes within.
This caused problems interpreting some byte sequences in some
files.
This commit changes things to always open files as UTF-8, which
makes the error go away.
test-check-module-imports.t now passes on Python 3.5 and 3.6
with this change.
Differential Revision: https://phab.mercurial-scm.org/D7225