Hi,

PEP634, introduced in Python 3.10, added two new keywords, "match"
and "case". Commit 139042eb8629e6fd49b2c3002a8fc4d1aabd174d added them to the
font-lock machinery, but missed the opportunity to configure them as
block-starter as well.

The attached patch does that, adding also two simple indentation tests.

All the best,
ciao, lele.