Opening a remote (SSH) file with sudo (tramp) in Emacs is failing

Question

I have followed (and partially adapted) the recommendations in Open file via SSH and Sudo with Emacs

My custom.el contains something like the following:

(custom-set-variables
  '(tramp-default-proxies-alist (quote (("my-sudo-alias" nil "/ssh:user@host")))))

However when I try to visit a remote file say sudo:my-sudo-alias:/etc/whatever I get the following error: Method `scpc' is not supported for multi-hops.

How do I fix this?

Answer 1

Perhaps something else in your proxy list is interfering?

What does C-h v tramp-default-proxies-alist look like?

You might also have scpc set as your tramp-default-method. I don't think that should be an issue in this case, but I'm not certain of that.

Did you try the ad-hoc approach that I detailed in the Q&A you linked to?

If that doesn't work, try emptying the proxy list, and then trying it again.

Note also that the scpc & rsyncc tramp methods are deprecated in the latest Tramp (ControlMaster is now used automatically if it is available).