[Webkit-unassigned] [Bug 166493] New: Nested calc (e.g. calc(calc(x))) doesn't work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=166493

            Bug ID: 166493
           Summary: Nested calc (e.g. calc(calc(x))) doesn't work
    Classification: Unclassified
           Product: WebKit
           Version: Safari 10
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: oliverjash at gmail.com

When nesting occurs in the CSS calc function, WebKit fails to calculate the result.

Example (works in Chrome, empty in Safari): http://jsbin.com/tonova/10/edit?html,css,output

This is quite common when using CSS variables, e.g. http://jsbin.com/tonova/11/edit?html,css,output

There could be some overlap here with issue https://bugs.webkit.org/show_bug.cgi?id=161002

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