Re: `M-x yank-media'

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: emacs-devel@gnu.org, Alan Third <alan@idiocy.org>
> Date: Sun, 07 Nov 2021 14:32:42 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > What does this require from the clipboard to work?  What are the
> > assumptions?
> 
> It's basically this on GNU/Linux:
> 
> (gui-get-selection 'CLIPBOARD 'TARGETS)
> =>
> [TIMESTAMP TARGETS MULTIPLE SAVE_TARGETS text/html text/_moz_htmlinfo 
> text/_moz_htmlcontext image/png image/jpeg image/bmp image/x-bmp 
> image/x-MS-bmp image/x-icon image/x-ico image/x-win-bitmap 
> image/vnd\.microsoft\.icon application/ico image/ico image/icon text/ico 
> image/tiff]
> 
> This lists the available media types.

But those are just the types.  How do we fetch the stuff afterwards?

> I haven't looked at Windows, but I'm guessing it has to grow a similar
> set of capabilities.

The TARGETS thingy is already supported, has been for a long time:

  (gui-get-selection 'CLIPBOARD 'TARGETS)
   =>
   [DataObject text/html HTML\ Format text/_moz_htmlinfo text/_moz_htmlcontext 
application/x-moz-file-promise-url application/x-moz-file-promise-dest-filename 
FILE_NAMES Preferred\ DropEffect application/x-moz-nativeimage DIB Ole\ 
Private\ Data BITMAP nil]

(This is after "Copy Image" in Firefox.)  But I suspect that's not all
of the story.

> > AFAIK, that's what "other applications" do: they paste the content
> > from the clipboard regardless of the type.  Fine-tuned behavior, where
> > the user can select exactly what he/she wants to past and how, is then
> > available from a context menu.
> 
> Yes, but it would just be too surprising in an Emacs context, in my
> opinion.  Changing how something as fundamental as `C-y' works here
> would potentially be extremely annoying.

Let's see what others think.