[Webkit-unassigned] [Bug 138129] New: String.prototype.split gives incorrect result in some cases: "a".split(/$/) == ["a", ""] not ["a"].

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=138129

            Bug ID: 138129
           Summary: String.prototype.split gives incorrect result in some
                    cases: "a".split(/$/) == ["a",""] not ["a"].
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lrn at chromium.org

String.prototype.split gives an incorrect result in some cases.
When doing "a".split(/$/), the result is ["a", ""]. The result should be ["a"].
This was seen in Safari 7.1.

>From the es5 spec:
"The value of separator may be an empty String, an empty regular expression, or a regular expression that can match an empty String. In this case, separator does not match the empty substring at the beginning or end of the input String, nor does it match the empty substring at the end of the previous separator match."
In this case, the regexp can only match an empty substring at the end of the input, and by the above text, that match is ignored wrt. splitting, so the result should be the same as with no match, ["a"].

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