[Webkit-unassigned] [Bug 71188] New: unicode-bidi:-webkit-plaintext on by default for <textarea dir=ltr|rtl>

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71188

           Summary: unicode-bidi:-webkit-plaintext on by default for
                    <textarea dir=ltr|rtl>
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P1
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aharon at google.com
                CC: eric at webkit.org, playmobil at google.com,
                    rniwa at webkit.org, leviw at chromium.org


unicode-bidi:-webkit-plaintext is supposed to be on by default for <textarea dir=auto>. However, currently (at least in Chrome 15.0.874.106 and 17.0.919.0), it is also on by default for <textarea dir=ltr> and <textarea dir=rtl>. This breaks backwards compatibility.

test case: data:text/html,<textarea dir=rtl>the period should be on the left.</textarea>

According to the HTML spec (http://dev.w3.org/html5/spec/Overview.html#bidirectional-text), the correct default stylesheet as relating to unicode-bidi is supposed to be:

[dir] { unicode-bidi: embed; }
bdi, bdi[dir], output, output[dir], [dir=auto i] { unicode-bidi: isolate; }
bdo, bdo[dir] { unicode-bidi: bidi-override; }
bdo[dir=auto i] { unicode-bidi: bidi-override isolate; }
textarea[dir=auto i], pre[dir=auto i] { unicode-bidi: plaintext; }

Also see https://bugs.webkit.org/show_bug.cgi?id=70373 for another bug due to an incorrect default being set for unicode-bidi.

Kudos to Amir Aharoni on finding this bug.

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