Issue #17203: add long option names to unittest discovery docs.
Issue #17203: add long option names to unittest discovery docs.
Issue #17203: add long option names to unittest discovery docs.
#17256: fix syntax highlight in embedding example.  Patch by Kushal Das.
#17256: merge with 3.2.
#17256: merge with 3.3.
#17271: update example in tempfile docs.
#17271: merge with 3.2.
#17271: merge with 3.3.