[Webkit-unassigned] [Bug 167699] New: Serialization of custom props in longhand should be "" not value of shorthand

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=167699

            Bug ID: 167699
           Summary: Serialization of custom props in longhand should be ""
                    not value of shorthand
    Classification: Unclassified
           Product: WebKit
           Version: Safari 10
          Hardware: Unspecified
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: gwhit at microsoft.com

Example URL:
https://jsfiddle.net/ok8uwunf/

Steps to reproduce the problem:
1. Open https://jsfiddle.net/ok8uwunf/
2. Look at value displayed in target element

What is the expected behavior?
================================
The value should be "" since the variable substitution hasn't occurred

What went wrong?
================================
It seems that Blink doesn't follow this line of the spec:

"Pending-substitution values must be serialized as the empty string, if an API allows them to be observed."

Since we are looking at specified style, this needs to be an empty string.

Firefox: no repro
Edge: no repro
Blink: Repro

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.webkit.org/pipermail/webkit-unassigned/attachments/20170201/0ec6e07d/attachment.html>