557520 - Embedded blocks should serve as bidi separators

Status: RESOLVED FIXED

(Core :: Layout: Text and Fonts, defect)

Description

[Simon Montagu :smontagu]

See http://www.w3.org/TR/html-bidi/#blocks-as-separators

I believe that our current behaviour of treating all embedded elements in effect as inlines, and replacing them by U+FFFC OBJECT REPLACEMENT CHARACTER for purposes of bidi resolution, was just an oversight.

Note that implementing this will require being able to break a block element into multiple paragraphs for Bidi resolution, which makes it similar to bug 263359.

Comment 1

[Simon Montagu :smontagu]

Attachment: Testcase

Comment 2

[Simon Montagu :smontagu]

Attachment: Reference for testcase

Comment 3

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

This is also tested in the fourth test of:
http://test.csswg.org/suites/css2.1/20101001/xhtml1/bidi-breaking-001.xht

Comment 4

[Simon Montagu :smontagu]

This was fixed by bug 263359, and the testcase is effectively equivalent to layout/reftests/bidi/613157-1.html

http://test.csswg.org/suites/css2.1/20101001/xhtml1/bidi-breaking-001.xht is 404, but we pass http://test.csswg.org/suites/css2.1/20101210/html4/bidi-breaking-001.htm, if that's the same thing.