revlog: make pure version of _partialmatch() support 40-byte hex nodeids Without this patch, test-histedit-arguments.t would fail when run with --pure. It turned out to be because the pure version of _partialmatch() does not support full 40-byte hex nodeids. When histedit's instructions include things like "pick tip", it resolves the "tip" revision early to a full nodeid (but plain hex nodeid prefixes are not resolved to full nodeids). Then the nodeid (full or not) is looked up using to a full nodeid later. This step is what fails in pure mode. It has been failing since my c4131138eadb (histedit: look up partial nodeid as partial nodeid, 2018-04-06). I haven't verified, but I suspect histedit instructions like "pick <full hex nodeid>" would have been failing before my commit too, though. The fix is trivial: change a "< 40" to "<= 40". Differential Revision: https://phab.mercurial-scm.org/D3428

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from __future__ import absolute_import

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import os

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if os.environ.get('COVERAGE_PROCESS_START'):

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    try:

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        import coverage

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        import uuid

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        covpath = os.path.join(os.environ['COVERAGE_DIR'],

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                               'cov.%s' % uuid.uuid1())

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        cov = coverage.coverage(data_file=covpath, auto_data=True)

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        cov._warn_no_data = False

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        cov._warn_unimported_source = False

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        cov.start()

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    except ImportError:

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        pass