It might not just be a SpecFunction. E.g, eval
Created attachment 365407 [details] patch
Comment on attachment 365407 [details] patch r=me
Comment on attachment 365407 [details] patch Clearing flags on attachment: 365407 Committed r243268: <https://trac.webkit.org/changeset/243268>
All reviewed patches have been landed. Closing bug.
<rdar://problem/49087567>