Bug 244950 – Handling of text documents does not comply with modern HTML spec

• Status: RESOLVED
• Resolution: FIXED
• Component: WebCore Misc.

[Brent Fulgham]

Given the spec language in https://html.spec.whatwg.org/multipage/browsing-the-web.html#read-text, the setCompatibilityMode code here seems out-of-spec to me:
(7.11.4.3 Set document's mode to "no-quirks".)

From: Source/WebCore/html/parser/TextDocument.cpp:

TextDocument::TextDocument(Frame* frame, const Settings& settings, const URL& url, ScriptExecutionContextIdentifier identifier)
  : HTMLDocument(frame, settings, url, identifier, { DocumentClass::Text })
{
  setCompatibilityMode(DocumentCompatibilityMode::QuirksMode);
  lockCompatibilityMode();
}

This causes the following WPT failure:

wpt /html/browsers/browsing-the-web/read-text/load-text-plain.html

[Radar WebKit Bug Importer]

<rdar://problem/99719728>

[Brent Fulgham]

Pull request: https://github.com/WebKit/WebKit/pull/4143

[Brent Fulgham]

It looks like Chris started on a larger version of this change here: Bug 228832.

[Brent Fulgham]

Pull request: https://github.com/Webkit/WebKit/pull/4143

[EWS]

Committed 254389@main (e30caa272fe6): <https://commits.webkit.org/254389@main>

Reviewed commits have been landed. Closing PR #4143 and removing active labels.