[cubicweb-ctl/fix] correctly get exception traceback_ for pdb.post_mortem
In python 3 the behavior of sys.exc_info had a very subtle change:
- in python 2 you can call if whenever you want after a try/except statement
and you'll get information about this last raise
- ipython 3, once you get out of try/except, sys.exc_info is cleaned and you'll
get (None, None, None)
Hardened the test to avoid this error from happening again.
^build$
^dist$
\.egg-info$
^.tox$
^.cache$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
\.pybuild
cubicweb/server/test/data/slapd.conf
debian/python-cubicweb
debian/*.log
debian/*.substvars
debian/cubicweb-doc
debian/cubicweb
debian/files
syntax: regexp
.*/data.*/database/.*
.*/data/ldapdb/.*
.*/data/uicache/
.*/data/libpython/cubicweb_.*/i18n/.*\.po
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
^doc/_build
^doc/js_api/
test-results.xml
ve