Re: How to autoload Tramp methods

[Michael Albinus]

Eshel Yaron <me@eshelyaron.com> writes:

> Hello Michael, all,

Hi Eshel,

sorry for the late reply, I was out of order last days.

> Is it possible to autoload a Tramp method that some extension provides?
>
> My problem is as follows: package foo-tramp defines a Tramp method foo.
> It also, for example, provides an autoloaded command foo-dired that
> starts Dired in some remote foo directory.  From that Dired buffer I use
> C-x C-f to open some other remote file via the same foo method, now I
> have a remote foo file name in my file name history.  So far so good.
> But then at some point I restart Emacs, and I want to find that remote
> file again.  The file name is in my history so I can dig it up with M-p
> in the C-x C-f prompt.  However, since I didn't invoke foo-dired or any
> command from the foo-tramp package or otherwise loaded that package yet,
> Tramp doesn't know about the foo method and I get an error:
> "Method ‘foo’ is not known"
>
> Can package foo-tramp somehow arrange to be autoloaded when the foo
> method is used?

Tramp recognizes the "foo" method in remote file names if tramp-methods
contains an entry for "foo". So you might autoload the settings for
"foo" in your foo-tramp package. See the approach in tramp-container.el.
However, you must replace the ;;;###tramp-autoload cookie by ;;;###autoload.

Or see the ELPA packages lxc-tramp, lxd-tramp or incus-tramp.

> Thanks,
>
> Eshel

Best regards, Michael.