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- <h1>Non-conformant scheme-specific syntax</h1>
- <p>Non-standard standards</p>
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- <p>Some allocated <a href="https://www.iana.org./assignments/uri-schemes/uri-schemes.xml"><abbr title="Uniform Resource Identifier">URI</abbr> schemes</a> are paired with syntax specifications that don't conform to <a href="https://tools.ietf.org./html/rfc3986"><abbr title="Request for Comments">RFC</abbr> 3986</a>. I suspect that some of these schemes were defined before <abbr title="Request for Comments">RFC</abbr> 3986 was written and never updated to comply, but others specifically claim to comply with <abbr title="Request for Comments">RFC</abbr> 3986, only to disregard what <abbr title="Request for Comments">RFC</abbr> 3986 actually says.</p>
- <h2 id="aaas">The <code>aaa:</code> and <code>aaas:</code> schemes</h2>
- <p><a href="https://tools.ietf.org./html/rfc6733#section-4.3.1"><abbr title="Request for Comments">RFC</abbr> 6733</a> specifically claims to conform to <abbr title="Request for Comments">RFC</abbr> 3986, but then defines two schemes that don't actually conform to it. <abbr title="Request for Comments">RFC</abbr> 3986 requires that if a host component is present, the path component be either be empty or begin with a slash. However, <abbr title="Request for Comments">RFC</abbr> 6733 defines a scheme in which there is always a host component and the path is either empty or begins with a <strong>*semicolon*</strong>.</p>
- <h2>Other schemes</h2>
- <p>This page is yet incomplete and other non-conformant schemes will be added.</p>
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