[Webkit-unassigned] [Bug 115954] New: [att~=val] attribute selectors fail when tab is used as the whitespace character

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=115954

           Summary: [att~=val] attribute selectors fail when tab is used
                    as the whitespace character
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dan at coedit.co.uk


Created an attachment (id=201453)
 --> (https://bugs.webkit.org/attachment.cgi?id=201453&action=review)
Test case showing the problem

Note: I have also reported this bug in the Chromium bug tracker... presumably now they've forked WebKit to Blink, we need to report issues both here and there? (https://code.google.com/p/chromium/issues/detail?id=239786)

Steps to reproduce the problem:
1. Create an element that has an attribute with a whitespace-delimited list of values. Make the whitespace a space character
2. Create another element that has an attribute with a whitespace-delimited list of values. Make the whitespace a tab character
3. Assign styles to those values using the [att~=val] attribute selector
4. Load the page

What is the expected behaviour?
Both elements should have identical styling

What went wrong?
Only the element whose attribute is delimited with space characters will see the styling applied

Does this work in other browsers? Yes

This fails in the following browsers:
WebKit r149907 nightly build from 10 May 2013 (OSX 10.8.3)
Safari 6.0.4 (8536.29.13) (OSX 10.8.3)
Chrome 28.0.1500.6 dev (OSX 10.8.3)

This passes in the following browsers:
Opera 12.15 (build 1748) (OSX 10.8.3)
Firefox 20.0 (OSX 10.8.3)
IE10 (Win 7)
IE9 (Win 7)
IE8 (Win 7)
IE7 (Win XP)

I've not tested on Windows in any non-IE browser.

Interestingly enough, the Chromium team have marked this as being part of the Blink-JavaScript component, whereas I'd say it was a CSS bug. For this reason (they certainly know more about browser internals than I do), I've left the "component" field here as "New Bugs" rather than setting it to "CSS".

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