py3: port string formatting
`skipped` is a set of integer revs here. So cast integers to
strings using %d.
None doesn't cast to an empty string on Python 3. So use '' explicitly.
Differential Revision: https://phab.mercurial-scm.org/D2146
#require test-repo
Enable obsolescence to avoid the warning issue when obsmarker are found
$ . "$TESTDIR/helpers-testrepo.sh"
Go back in the hg repo
$ cd $TESTDIR/..
$ for node in `testrepohg log --rev 'not public() and ::. and not desc("# no-check-commit")' --template '{node|short}\n'`; do
> testrepohg export --git $node \
> | contrib/check-commit > ${TESTTMP}/check-commit.out
> if [ $? -ne 0 ]; then
> echo "Revision $node does not comply with rules"
> echo '------------------------------------------------------'
> cat ${TESTTMP}/check-commit.out
> echo
> fi
> done