I use Emacs 26.1 and would like to compare two files word-by-word. Clicking "Tools -> Compare (Ediff) -> Windows Word-by-word..." allows only to compare the visible parts of two buffers, not the whole buffers. This seems to be intended behavior as per my other question. The response there contains a working solution for comparing two complete buffers. There seem to be no issues with performance.
How can this be used to compare two files? It would be nice if a menu option could be added as well: "Tools -> Compare (Ediff) -> Files Word-by-word...".