py3: partially fix pager spawning on Windows
Previously, spinning up the pager crashed because the command and environment
was in bytes. (See also 543a788eea2d.) Now it aborts with an invalid handle:
$ HGMODULEPOLICY=py py -3 ../hg --traceback --config extensions.evolve=!
Traceback (most recent call last):
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 967, in _write
self.fout.write(''.join(msgs))
File "c:\Users\Matt\projects\hg\mercurial\windows.py", line 173, in write
self.fp.write(s[start:end])
OSError: [WinError 6] The handle is invalid
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\Users\Matt\projects\hg\mercurial\scmutil.py", line 164, in callcatch
return func()
File "c:\Users\Matt\projects\hg\mercurial\dispatch.py", line 350, in _runcatchfunc
return _dispatch(req)
File "c:\Users\Matt\projects\hg\mercurial\dispatch.py", line 930, in _dispatch
return commands.help_(ui, 'shortlist')
File "c:\Users\Matt\projects\hg\mercurial\commands.py", line 2930, in help_
ui.write(formatted)
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 948, in write
self._writenobuf(*args, **opts)
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 960, in _writenobuf
self._write(*msgs, **opts)
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 969, in _write
raise error.StdioError(err)
mercurial.error.StdioError: [Errno 9] The handle is invalid
abort: The handle is invalid
The interesting bit here is that the abort message is marked with ANSI color,
but the OSError is not.
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