Re: No NEWS entry for doc-view-mupdf-use-svg (Emacs 30.0.91 feedback)

[Morgan Willcock <morgan@ice9.digital>]

Eli Zaretskii <eliz@gnu.org> writes:

>> Eventually I found the variable doc-view-mupdf-use-svg, and setting it
>> to nil reverted the rendering to the old method where the text was
>> visible.
>
> Why is that?  If your system supports display of SVG images, why
> wasn't the text readable?  Tassilo, any ideas?

I think it is rendering the text and the background of the document in
the same colour.

>> I suggest that, at the very least, this variable should be added to the
>> NEWS file so that someone having rendering issues after upgrading can
>> find it more easily.
>
> Thanks, I added it.

Thanks!

>> I am also not sure that having it default to t (enabling SVG rendering
>> by default) is a good idea.  It probably works well for certain types of
>> document but it wasn't usable for the ones which I was viewing (which
>> were all automated invoices sent by e-mail from multiple organisations).
>
> It is only non-nil if your Emacs supports display of SVG images, and
> in that case I don't see why not do it.  I think we should investigate
> your problem in more detail to understand why it didn't work for you.
> I hope Tassilo will have some ideas for looking into this.

If the problem is down to the default colours not working with
particular documents, then I imagine it will depend on how the PDF files
are being styled.  The documents that I couldn't read included invoices
from Microsoft Azure, so potentially a lot of people could find the same
issue.

-- 
Morgan Willcock