GNU bug report logs - #71909
30.0.60; Can not use yank-media for pasting image from clipboad in org-mode on Windows platform

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Message #97 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Cecilio Pardo <cpardo <at> imayhem.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#71909: 30.0.60; yank-media on MS-Windows
Date: Thu, 24 Oct 2024 10:39:13 +0200

On 24/10/2024 9:18, Eli Zaretskii wrote:

>> - If no PNG is offered, but DIBV5 is, like Firefox, convert the pixel
>> data to a PNG file, and offer it as image/png. We don't loose anything
>> converting the BMP to PNG, and the programs that use yank-media for
>> images (message-mode, org-mode) need a file, not an in-memory image
>> object. And PNG is a much better format.
> 
> I'm not sure I follow: isn't yank-media about yanking the image into
> the current buffer?  If so, why is having a file important, let alone
> necessary?

I mean they need data in the format that would go into a file, PNG, BMP, 
etc. Not the kind of data that is a DIB. We could easily convert in to a 
BMP file, but, once we need to manipulate it, better to give a PNG.

org-mode stores the yanked images as attachments, saving files. 
message-mode stores the images in the message like this:

<#part type="image/png" disposition=inline data-encoding=base64 raw=t>
iVBORw0KGgoAA...

That is, not a file in disk, but the data that would go into a PNG file.

>> - GDIMetafile would be ideally converted to SVG. Offering the metafile
>> as it is makes little sense in my opinion. It is not a very used format.
> 
> Will we support yanking from a spreadsheet?  If so, with what format?

Yes, LibreOffice offers them as RTF, with a table. Also in HTML. I'm 
hoping to convert RTF tables to org-mode tables.

> Where we have both RTF and HTML, should we perhaps use HTML and pass
> it through shr, to produce text with faces, rather than raw HTML?
> Once RTF handler exists, we could use that instead, but having it
> rendered via HTML might be a useful option anyway.

What mode could benefit from yanking propertized test?

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