On hover over file without extension, the overlay says "unknown"

[Zisu Andrei]

When I hover over a file which does not have a file extension (with name "bla"), the overlay will show in bottom right and will say "bla - unknown (size kb)". This is not helpful at all, when there is no extension, nothing should be shown, not even "unknown".

[Jeremy Wootten (jeremywootten)]

I find it is not the presence or absence of an extension that matters - it is whether the filetype can be determined from the contents. However, I agree "Unknown" is not helpful and can be removed.