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extdata: abort if external command exits with non-zero status (BC)...
extdata: abort if external command exits with non-zero status (BC) Per the last discussion, this is more reliable and consistent way than suppressing an error. For grep, erroring out might be inconvenient, but for curl, non-zero exit status should be detected. The latter wouldn't be possible if non-zero status is ignored. https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-October/105727.html

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sitecustomize.py
16 lines | 466 B | text/x-python | PythonLexer
from __future__ import absolute_import
import os
if os.environ.get('COVERAGE_PROCESS_START'):
try:
import coverage
import uuid
covpath = os.path.join(os.environ['COVERAGE_DIR'],
'cov.%s' % uuid.uuid1())
cov = coverage.coverage(data_file=covpath, auto_data=True)
cov._warn_no_data = False
cov._warn_unimported_source = False
cov.start()
except ImportError:
pass