Based on analyzing the code and knowledge of the web platform I want to see if we can trim these down to three modes: * Default, which uses the normal map, validates padding, and is strict on whitespace. * DefaultIgnoreWhitespace, like Default, but ignores ASCII whitespace. It notably does not ignore U+000B. WebKit used to ignore U+000B in some cases, but that was more an historical accident of using isASCIISpace where isHTMLSpace was warranted. See also bug 255467. * URL, which uses the URL map, does not validate padding, but is strict on whitespace. It's common for the URL case to not validate padding as including = in URLs can sometimes be involved. Also none of the existing WebKit code would validate padding or be loose on whitespace. I plan to put up a draft PR to see if there is any bot fallout.
<rdar://problem/108082420>
Pull request: https://github.com/WebKit/WebKit/pull/12768
Committed 263298@main (252a605f3492): <https://commits.webkit.org/263298@main> Reviewed commits have been landed. Closing PR #12768 and removing active labels.