2022-09-02 UTC
# 
gRegor yep, demo with defaults trims the space: http://htmlpurifier.org/demo.php?filter%5BAutoFormat.AutoParagraph%5D=0&filter%5BAutoFormat.DisplayLinkURI%5D=0&filter%5BAutoFormat.Linkify%5D=0&filter%5BAutoFormat.RemoveEmpty.Predicate%5D=colgroup%3A%0D%0Ath%3A%0D%0Atd%3A%0D%0Aiframe%3Asrc%0D%0A&filter%5BAutoFormat.RemoveEmpty%5D=0&filter%5BAutoFormat.RemoveSpansWithoutAttributes%5D=0&filter%5BNull_CSS.AllowedProperties%5D=1&filter%