28342 - "Transitional" switches to Quirks mode

Status: VERIFIED FIXED

(Core :: DOM: HTML Parser, defect, P3)

Description

[Pierre Saslawsky]

Verified with a recent M14 build.

Display a page with a strict DTD header: if that page contains the word 
"Transitional" anywhere in the body, the document is displayed in Quirks mode.

I'm going to attach 2 testcases which show that the problem is related to the 
presence or not of the word "Transitional" in the Body. The 2 testcases have a 
strict DTD header and take advantage of a Nav quirk with RGB colors to allow you 
to easily test the fix: if the text is red, the strict DTD header is ignored and 
we are in quirk mode.

Comment 1

[Pierre Saslawsky]

Attachment: Testcase #1: the text should not be red

Comment 2

[Pierre Saslawsky]

Attachment: testcase #2: shows that the bug is related to the word "Transitional"

Comment 3

[Pierre Saslawsky]

Attachment: Testcase #2 (again)

Comment 4

[rickg]

This is a harmful bug that can cause Seamonkey to be layout pages in the wrong 
mode (quirks vs. nonquirks). The fix is easy, and in hand. Please oh great PDT 
team, shed light on this problem.

Comment 5

[Pierre Saslawsky]

Almighty PDT team, please allow Rick to check in. My favorite testcase for bug 
18136 and bug 21950 contains the word "Transitional". It's on
http://descend.verso.com/~todd/moz/keywords.html?strict 

Comment 6

[leger]

Putting on the PDT+ radar for beta 1.  Go for it ricky-g :-)

Comment 7

[rickg]

Landed improved version of DTD detection code tonight.

Comment 8

[Jan Carpenter]

verified on NT, 98, Mac, Linux

Comment 9

[BMO Automation]

Attachment: [mozilla-mobile/fenix] Closes #28342: change the ui direction after a locale change (#28343)