[Webkit-unassigned] [Bug 96188] New: inline-flex baseline is sometimes wrong

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=96188

           Summary: inline-flex baseline is sometimes wrong
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dbarton at mathscribe.com
                CC: eric at webkit.org, tony at chromium.org, ojan at chromium.org,
                    shezbaig.wk at gmail.com


Created an attachment (id=162972)
 --> (https://bugs.webkit.org/attachment.cgi?id=162972&action=review)
inconsistent inline-flex baselines

The attached file shows that inline-flex elements with { align-items: baseline } seem to export flaky baselines to their containing block. I believe that "x" and "a" should always have the same baseline, according to <http://dev.w3.org/csswg/css3-flexbox/#flex-baselines>.

I am experimenting with using flex boxes for MathML, and except for this issue it looks good so far. The order, align-*, flex-direction, etc. properties would be very useful, as well as the prohibition against floats & columns. MathML doesn't need actual flexing, but does need these other features, including a precise baseline. If you know a reason flex boxes would be a bad idea for MathML, please state it, thanks!

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