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[SPEC] Backwards-compatible metadata in Gemini

Oliver Simmons oliversimmo at gmail.com

Mon Feb 22 10:34:46 GMT 2021

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On Mon, 22 Feb 2021 at 10:18, Stephane Bortzmeyer <stephane at sources.org> wrote:

Why? These people would only see the text at the end of the line, not
the 'data:' link itself.

Some clients show the links, most have an option to display it if they don't.Myself I like to have them shown so I know where I'm going.

* What set of characters in the key (except the colon, of course)?
LDH? ASCII letters or Unicode?

Gemini follows UTF-8/Unicode encoding everywhere else, so sticking tothat makes sense.A "best practice" will be to stick to regular ASCII characters if possible.

* What about the value? Completely unstructured and therefore
unparsable? Your own example for "last-edited" is useless for programs
since it does not fit any known standard for dates.

last-edited was just a random example, I wasn't trying to propose keysor values.

* Will we need a list of standard keys, to avoid some people using
"last-modified", others "last-edited" and others "last-change"?

A list of common keys/values should be a thing, without out it themetadata will be really impractical for any clients to use and willdegrade into meaningless junk.However this should NOT be a part of the spec, anyone can use anykeys/values they like, but a list of commonly used & recognised byclient should be kept.

OSM has a nice semi-related quote for this:

From https://wiki.openstreetmap.org/wiki/Any_tags_you_like:
Feel free to invent new tags! Though it is not "feel free to ignore existing tagging schemes and start marking pharmacies with unicorn=parking_lot".(tags being key/value pairs)