testing/web-platform/tests/conformance-checkers/html/elements/input/type-submit-formaction/port-leading-colon-bracket-colon-novalid.html


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<!DOCTYPE html>
<meta charset=utf-8>
<title>invalid formaction: port-leading-colon-bracket-colon</title>
<input type=submit formaction="http://2001::1]:80">