Right now, auto-updating assertions need to be spread across multiple lines to work properly. New assertions are generally written in this format to avoid being collapsed by clang-format to a single line:

ASSERT_STR_EQ_AUTO( // NOLINT
    "",
    actualOutput);

This is cumbersome to write and leads to very strange behavior if not done properly. To be more user-friendly, auto-updating assertions should be able to be written like so:

ASSERT_STR_EQ_AUTO("", actualOutput);

and the expected output should be filled in as expected.