@salvocos that’s not helpful. Each filetype has its own default app. I can’t know which filetypes are associated with Nautilus. Also, doing it for each filetype is definitely not a desired way to switch from one filemanager to the other.
But the only issue currently observe is simply with directories opened from Firefox download manager.
-Directories, as said, are already associated with Nemo by default.
- I see
~/.config/mimeappslistalready contains:[Default Applications] inode/directory=nemo.desktop@Falav - There is no such file in
~/.local/share/applications
Strangely, I didn’t do anything different but after a reboot (not after session restart), Firefox now does open folders in Nemo!
Solved.