127658 - getComputedStyle(element, 'fist:letter') doesn't give the correct result

Status: RESOLVED INVALID

(Core :: DOM: CSS Object Model, defect)

Description

[Martin Honnen]

The
  window.getComputedStyle
method takes two arguments where I think the second can be a string for a CSS
pseudo element like 
  first-letter
However for a simple test case I am going to attach Mozilla returns the same value
whether I pass in '' or 'first-letter' as the second argument although for the
element passed in there is first-letter style rule.

Comment 1

[Martin Honnen]

Attachment: test case (output some getComputedStyle values which should be different for the first-letter pseudo element but are not)

Comment 2

[Boris Zbarsky [:bzbarsky]]

taking bug

Comment 3

[Boris Zbarsky [:bzbarsky]]

Attachment: Testcase corrected to actually include the pseudo-element in the call to getComputedStyle

The first testcase never actually passed the pseudo to getComputedStyle

Comment 4

[Boris Zbarsky [:bzbarsky]]

That said, we seem to require the ":" in the pseudo-element name... The spec is
pretty unclear on that issue, but it seems like we should just add the color if
it's not there (since all pseudoelement names have to begin with a single colon).

Ian, what do you think?

Comment 5

[Boris Zbarsky [:bzbarsky]]

Ian talked to the WG and they say the ":" should be required in the string (or
"::" for CSS3-only pseudos).  Marking invalid.