On 01.05.2020 06:15, Stefan Monnier wrote:
> But then you have the reverse problem: after typing `file-name` in
> fido-mode you get too many false-positive for functions which aren't
> "manipulating file names" but merely return a file-name.

That's a fair point, but still the discoverability is not too bad. Given 
weighted sorting, the relevant functions are mostly at the top, see the 
screenshot.

Although we might want to look into why backup-file-name-p is sorted 
before file-name-quoted-p.