Since my previous patch submission was about Snaps in particular, I thought I'd create a new revision instead of updating the old one. Hope I did the right thing.
Anyway, you talked about finding a freedesktop standard for accessing gnome or other desktop created shares.
I've looked into it but it seems there is only an environment variable pointing to the location of the gvfs shares.
But then it occurred to me, in the same setmntent list used currently, the gvfs share is in there already!
So no need to do anything extra but excluding that share from the filter so it shows up too.
Looking at the complete unfiltered list I did not see any other useful shares to list ;-) so hopefully this patch is the last regarding this issue!
BTW. I noticed 2 typo's as well (filesystemts instead of filesystems)