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    <title>input[type="tel"], ValidityState.tooLong and user editing</title>
    <link rel="author" title="Chris Rebert" href="http://chrisrebert.com">
    <link rel="help" href="https://html.spec.whatwg.org/multipage/#limiting-user-input-length:-the-maxlength-attribute">
    <meta name="flags" content="interact">
    <meta name="assert" content="Per the 'Constraint validation' definition in the referenced section, an input whose value was edited by