def METHOD_NAME(self, bash):
    """
    a b c:| with trailing whitespace after the caret (no more words) and
    with WORDBREAKS -= : should return c:
    """
    assert_bash_exec(bash, "add_comp_wordbreak_char :")
    output = self._test(bash, "(a b c :)", 3, "a b c: ", 6, arg=":")
    assert output == "c:"