219928 - Add direction:ltr to mathml.css

Status: RESOLVED FIXED

(Core :: MathML, defect)

Description

[rbs]

Spin-off from bug 192644.

Need to add this default CSS rule so tha bidi processing doesn't mess MathML:
math { 
  direction: ltr
}

[I wonder if unicode-bidi:embed|override|normal is relevant here too, smontagu?]

Comment 1

[rbs]

Attachment: patch

Comment 2

[rbs]

Attachment: true patch

Comment 3

[Boris Zbarsky [:bzbarsky]]

Comment on attachment 131879 [details] [diff] [review]
true patch

r+sr=bzbarsky

Comment 4

[Simon Montagu :smontagu]

In principle, if you have |display: inline|, you also need |unicode-bidi: embed|
according to http://www.w3.org/TR/REC-CSS2/visuren.html#propdef-direction

"For the 'direction' property to have any effect on inline-level elements, the
'unicode-bidi' property's value must be 'embed' or 'override'."

However, I understand from bug 192644 that adding |direction: ltr| worked, so I
am clearly missing something.

Comment 5

[rbs]

Checked in.

Comment 6

[rbs]

>However, I understand from bug 192644 that adding |direction: ltr| worked, so I
>am clearly missing something.

That may because that bug came from the <mtable>, which is internally a block,
and so it inherited the CSS rule from its (inline) math wrapper. However I added
"unicode-bidi: embed" as well, for conformity with the spec as you mentioned.