any reason you couldn't name those files correctly? in any case no need to use file, nautilus uses the shared-mime-info database and a some clues to detect filetypes from the content, that doesn't seem a nautilus issue
any reason you couldn't name those files correctly? in any case no need to use file, nautilus uses the shared-mime-info database and a some clues to detect filetypes from the content, that doesn't seem a nautilus issue