[Webkit-unassigned] [Bug 85655] New: "input" event is fired when the value doesn't change

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=85655

           Summary: "input" event is fired when the value doesn't change
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Event Handling
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pimvdb at live.nl


Created an attachment (id=140301)
 --> (https://bugs.webkit.org/attachment.cgi?id=140301&action=review)
Test case

The HTML5 specification says that the "input" event only applies when the value of an input element *changes*:

http://www.whatwg.org/specs/web-apps/current-work/multipage/common-input-element-attributes.html#event-input-input

Currently, the event is also fired when replacing characters with the same sequence of characters, by means of e.g. pasting/dragging. The specification says these actions should not fire the "input" event:

"Some user interactions do not cause changes to the value, e.g. (...) replacing some text in the field with text from the clipboard that happens to be exactly the same text."

To reproduce, load the test case, and type something in the input element. Then do "select all", "copy" and "paste" successively. The value won't change, but the "input" event is fired.

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