find symbols and protocols

[4www]

now that, in the I4kFindSymbols, !&+# have the same level, and function (it seems) as the new "protocol symbols" (they all end up by a :, as the new URL(window.location).protocol has), gopher:, git:, finger: etc.

• how should they handle a "Find query"? new URL(<protocol_scheme_other_than_http>) might not give detail on the URI parsing
• by default we're in a web browser (first used case), and trying to resolve the user request, even though the browser does not support this (but some remote/local web-URL might be able to proxy them for us, if we build the proxy_app + protocol path correctly)

gemini:hello world
gemini: hello world
gemini:      hello world
gemini:!d hello world
gemini:!m tokyo
gemini:+capsule hello world
gemini:&network username capsule-id
gemini://my-gemini-capsule.example.org/some/path

Or more generally (pseudo https://en.wikipedia.org/wiki/Web_Ontology_Language)

other-protocol://<scheme>
other-protocol:[<;symbol><;engine>]%20[query]