[Webkit-unassigned] [Bug 41103] New: Match either Firefox or IE better in the characters that allow a linewrap

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=41103

           Summary: Match either Firefox or IE better in the characters
                    that allow a linewrap
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tabatkins at google.com


Firefox 3.6 (and possibly earlier) treats the forward slash "/" as creating a linebreak opportunity for the linewrap algorithm.  IE8 (and possibly earlier) treats the open square bracket "[" as creating a linebreak opportunity for the linewrap algorithm.  Webkit does neither.  This causes the PCWorld page at http://www.pcworld.com/article/168658/seven_reasons_microsofts_profits_are_tanking.html to break, as a comment at the bottom of the page contains a very long line with no spaces, but several forward slashes and square brackets.

We should match either Firefox or IE here, or perhaps both, in their linebreak-opportunity seeking.

Minimal test case:
data:text/html,%3C!DOCTYPE%20html%3E%3Cdiv%20style%3D%22width%3A%20800px%3B%20margin%3A%200%20auto%3B%22%3E%3Cdiv%20style%3D%22float%3A%20left%3B%20width%3A%20600px%3B%22%3Efoooooooooooooooooooooo%2Fooooooooooooooooooooooooooooo%2Foooooooooooooooooooooooooooo%2Fooooooooooooooooooooooooooo%2Fooooooooooooooooooooooo%3C%2Fdiv%3E%3Cdiv%20style%3D%22float%3A%20right%3B%20width%3A%20200px%3B%20height%3A%20600px%3B%20background%3A%20gray%3B%22%3E%3C%2Fdiv%3E%3C%2Fdiv%3E

Expected Result: The long line breaks before the second and fourth forward slashes, and doesn't stretch the left float.  (This works as expected in Firefox.  Replace the / with [ for it to work as expected in IE.)
Actual Result: The long line doesn't break at all, stretching the left float underneath the right float and off the side of the monitor for most people.

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