Re: yank-media: allow users to limit image types that can be inserted

[Visuwesh <visuweshm@gmail.com>]

[திங்கள் செப்டம்பர் 23, 2024] Eli Zaretskii wrote:

>> From: Visuwesh <visuweshm@gmail.com>
>> Cc: Eli Zaretskii <eliz@gnu.org>,  pinmacs@cas.cat,  emacs-devel@gnu.org
>> Date: Mon, 23 Sep 2024 20:44:19 +0530
>> 
>> [திங்கள் செப்டம்பர் 23, 2024] Robert Pluim wrote:
>> 
>> 
>> >     Eli> The issue at hand here, AFAIU, is not the UI, but how Lisp programs
>> >     Eli> (and Org in particular) can control this.  If the issue is the user
>> >     Eli> interface, then I honestly don't understand what issue is being
>> >     Eli> brought up, because in that case we already have the correct and
>> >     Eli> comprehensive solution, similar to what other advanced apps do in
>> >     Eli> these cases.
>> >
>> > You have to register the yank-media-handler before the yank-media
>> > call, so org canʼt control this: it has to register for "image/.*"
>> > because it canʼt know what formats will be presented to it. I guess it
>> > could have a user option to filter the results from inside its
>> > yank-media-handler, but then *every* package that wants to support
>> > image yanking will have to implement something similar: we should just
>> > implement such handling in the yank-media code.
>> 
>> AFAIR the yank-media code, there's no way for the handlers to reject a
>> specific format.  yank-media, the command, asks the user the type she
>> wants, _then_ calls the handler specific to that type.  The handler
>> cannot influence anything during this interaction.
>
> This is true, but I don't see how it is relevant to what I suggested.

I was replying to this part:

    The issue at hand here, AFAIU, is not the UI, but how Lisp programs
    (and Org in particular) can control this.

My point was that there is little control over this UI from the handlers
type since the handler cannot filter the types available.