773825 - resolving relative urls in style attribute depends on relative order of xml:base and style attrs

Status: RESOLVED WONTFIX

(Core :: CSS Parsing and Computation, defect)

Description

[fantasai]

Attachment: testcase

If I understand correctly, these two should be processed the same way:
  <p style="background-image: url(swatch-lime.png)" xml:base="../">
  <p xml:base="../" style="background-image: url(swatch-lime.png)">

However only the second one works in Gecko.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Basically, we don't handle dynamic changes to xml:base in any sort of useful way.... and we parse the style attribute eagerly.  We could "fix" the latter, but the former would remain.  And similar for <base>, of course.

Imho we should simply drop xml:base support, btw.

Comment 2

[fantasai]

If we want to do that, we probably want to get it dropped from the HTML5 spec, too. (Fwiw, both us and Opera support xml:base, just not on style attributes. I haven't checked IE.)

Comment 3

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

This test is also:
http://test.csswg.org/suites/css-style-attr/nightly-unstable/xhtml1/style-attr-urls-003.xht

(In reply to Boris Zbarsky (:bz) from comment #1)
> Basically, we don't handle dynamic changes to xml:base in any sort of useful
> way.... 

This is bug 303478.

Comment 4

[Jonathan Kingston [:jkt] he/him]

Marking WONTFIX as Bug 903372 removed support for xml:base. Even if it is reopened, I don't think we intent to continue support for this feature.