We had a few examples of where Clang Format has put unwanted line breaks in the middle of a struct member definition or moved the pointer alignment in an inconsistent position.

    TAILQ_HEAD(__wt_keyedhash, __wt_keyed_encryptor)
    keyedhashqh[WT_HASH_ARRAY_SIZE];

 TAILQ_HEAD(__wt_keyedhash, __wt_keyed_encryptor) * keyedhashqh;

    /* Hashed handle reference list array */
    TAILQ_HEAD(__dhandles_hash, __wt_data_handle_cache) * dhhash;

We should investigate some options on how we can do better here.

This is always going to be a challenge because macros aren't part of normal C syntax so unless the formatter works as a preprocessor (it doesn't), then it just looks like a function call has been placed where a type should be.