https://www.rfc-editor.org/rfc/rfc3986.txt https://www.rfc-editor.org/rfc/rfc3986.txt allows URI = scheme ":" hier-part [ "?" query ] [ "#" fragment

https://www.rfc-editor.org/rfc/rfc3986.txt https://www.rfc-editor.org/rfc/rfc3986.txt allows URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ] hier-part = "//" authority path-abempty path-abempty = *( "/" segment ) segment = *pchar pchar = unreserved / pct-encoded / sub-delims / ":" / "@" and https://www.rfc-editor.org/rfc/rfc1738.txt https://www.rfc-editor.org/rfc/rfc1738.txt originally said > Within the <path> and <searchpart> components, "/", ";", "?" are reserved.