What do I need to do to replace EFS with Tramp?

[Kai Großjohann]

Ange-FTP only hooks into the file-name-handler-alist, but EFS hooks
into Emacs in more places.  Where does it hook in and what do I need
to do to replace it?

Basically, I'd create a Tramp function which looks whether it's
dealing with an EFS filename and calls the EFS function, if necessary.
Maybe it's good to advise the EFS functions, I'm not sure.

Can some XEmacs expert please help?

kai
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