Well, this add-on is quite good and works exactly how I need, but I am missing very much another another one Alice had, which saved me so much time ans nerves. I am talking about the Go Parent Folder in FF library. Maybe you could are it work with the present versions of FF, please? Give us an idea. I tried to tell her this through her site, but it is very difficult and is all written in Japanese and you know Google does not translate many things in there.
@ooFn. Thank you for your reply. I know about the changes with FF extensions. The information about it was published about one year before it happened. What I meant was a suggestion to adapt alice0075's Go to Parent Folder like you did with this one. I still have the xpi file, now useless, of course.
Hello Neophile, the new WebExtension mode of FF, which is the only one remaining (alice0775 was a XUL extension, this is not allowed anymore by FF), does not permit an add-on to function from within the bookmark library so far. So I didn't find any way yet to do what you suggest. I tried also to see with alice0775 when publishing this follow up, but it appears alice0775 is not wanting to work with WebExtensions for now.