bug#38394: Fwd: Use different image filtering when zooming in vs zooming out

[Lars Ingebrigtsen]

Alan Third <alan@idiocy.org> writes:

> It should be possible, I just don't know how. I've never done any
> Cairo work before...
>
> Turned out to be pretty simple. Patch attached.

Then I think this should be applied to Emacs 28, and we'll get some
feedback on whether people prefer it this way or not.

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