> One fix would be to stash a copy of `%renderedfiles` before generating
> the preview, then compare it afterwards to see how it changed and
> determine what files were added, and record those someplace, and delete
-> them on a future refresh (after some reasonable time period).
+> them on a future refresh (after some reasonable time period). [[done]]
>
> Another approach would be to make previewing always render files with
> some well-known temporary name. Then all such temp files could be removed