Warning message needed when deleting unlinked files

Dear developers,

I just managed to delete ALL my unlinked files without intention to do so.

I had filtered for a few files that shared part of their file name, and then wanted to delete those, so said “Select all” (interpreting it of course as “Select all visible”) and then “Delete selected” - you’ll understand my surprise and shock when the next thing I read is “1207 unlinked files sucessfully deleted”…

PLEASE either change the function of the “Select all” button on a filtered view to actually only select those files that are visible, or at least add a clear warning - maybe in the form of “Do you really want to delete XXX files?”!!!