bug#54606: 27.1; next/previous image command in image-mode triggers tramp connections for all remote dired buffers

[Michael Albinus]

Phil Sainty <psainty@orcon.net.nz> writes:

Hi Phil,

> I've just tested with this, and it solves the immediate problem, but
> it's slow.  In my test case it's taking ~2s to switch between images,
> whereas it takes only a fraction of a second when I'm ignoring remote
> dired buffers by adding (not (file-remote-p default-directory)) to
> the conditions.
>
> I have 15 remote dired buffers (about half of which are using multi-
> hops), which isn't a small number but also isn't big, so I think that
> `non-essential' seems inadequate here (unless this is significantly
> more efficient in newer versions).

There is also a change in Tramp of Emacs master, which is relevant in
this context. Do you have a chance to test that Emacs version?

Otherwise, does the appended patch for Emacs 27 make a difference? I
haven't tested it with Emacs 27, though.

> -Phil

Best regards, Michael.

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