[Webkit-unassigned] [Bug 6410] New: Performance regression in text relayout due to bad BidiContext equality testing

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=6410

           Summary: Performance regression in text relayout due to bad
                    BidiContext equality testing
           Product: WebKit
           Version: 412+
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: opendarwin.org at mitzpettel.com


The fix for bug 5172 added that for two line-ends to match (and thus for relayout to stop), they should 
also have the same bidi context. The bug is that the == operator for BidiContexts always returns false for 
contexts that don't have a parent, so in most cases, relayout will unnecessarily proceed through the last 
line.

Fix coming up.

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