tests/test-check-py3-compat.t

shelve: move possible shelve file extensions to a single place

This and a couple of following patches are a preparation to
implementing obsolescense-enabled shelve which was discussed
on a Sprint. If this refactoring is not done, shelve is going
to look even more hackish than now.

This particular commit introduces a slight behavior change. Previously,
if only .hg/shelve/name.patch file exists, but .hg/name.hg does not,
'hg shelve -d name' would fail saying "shelve not found". Now deletion
will only fail if .patch file does not exist (since .patch is used
as an indicator of an existing shelve). Other shelve files being absent
are skipped silently to accommodate for future introduction of obs-based
shelve, which will mean that for some shelves .hg and .patch files exist,
while for others .hg and .oshelve.

#require test-repo

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ cd "$TESTDIR"/..

  $ hg files 'set:(**.py)' | sed 's|\\|/|g' | xargs python contrib/check-py3-compat.py
  hgext/fsmonitor/pywatchman/__init__.py not using absolute_import
  hgext/fsmonitor/pywatchman/__init__.py requires print_function
  hgext/fsmonitor/pywatchman/capabilities.py not using absolute_import
  hgext/fsmonitor/pywatchman/pybser.py not using absolute_import
  i18n/check-translation.py not using absolute_import
  setup.py not using absolute_import
  tests/test-demandimport.py not using absolute_import

#if py3exe
  $ hg files 'set:(**.py) - grep(pygments)' | sed 's|\\|/|g' \
  > | xargs $PYTHON3 contrib/check-py3-compat.py \
  > | sed 's/[0-9][0-9]*)$/*)/'
  hgext/convert/transport.py: error importing: <ImportError> No module named 'svn.client' (error at transport.py:*)
  hgext/fsmonitor/pywatchman/capabilities.py: error importing: <ImportError> No module named 'pybser' (error at __init__.py:*)
  hgext/fsmonitor/pywatchman/pybser.py: error importing: <ImportError> No module named 'pybser' (error at __init__.py:*)
  hgext/fsmonitor/watchmanclient.py: error importing: <ImportError> No module named 'pybser' (error at __init__.py:*)
  hgext/mq.py: error importing: <TypeError> __import__() argument 1 must be str, not bytes (error at extensions.py:*)
  mercurial/scmwindows.py: error importing: <ImportError> No module named 'msvcrt' (error at win32.py:*)
  mercurial/statprof.py: error importing: <TypeError> __slots__ items must be strings, not 'bytes' (error at statprof.py:*)
  mercurial/win32.py: error importing: <ImportError> No module named 'msvcrt' (error at win32.py:*)
  mercurial/windows.py: error importing: <ImportError> No module named 'msvcrt' (error at windows.py:*)

#endif

#if py3exe py3pygments
  $ hg files 'set:(**.py) and grep(pygments)' | sed 's|\\|/|g' \
  > | xargs $PYTHON3 contrib/check-py3-compat.py \
  > | sed 's/[0-9][0-9]*)$/*)/'
#endif