[Webkit-unassigned] [Bug 92497] New: [CSSRegions]Region overset property is not properly computed when there is a region break

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=92497

           Summary: [CSSRegions]Region overset property is not properly
                    computed when there is a region break
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: onea at adobe.com


Created an attachment (id=154918)
 --> (https://bugs.webkit.org/attachment.cgi?id=154918&action=review)
repro case for bug

In the attached repro case, the content is flowed in only the first region, yet the "regionoverset" property for the regions in the region chain are computed as "overflow", "fit" and "empty". According to the spec: http://www.w3.org/TR/css3-regions/#dom-region-regionoverset , they should be "fit", "empty" and "empty", since content is only flowed in the first region, and the second and third ones have no content flowing inside of them. "overflow" should only be valid for the last region in a region chain, if the content cannot be completely flowed inside it.

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