[spec] adding a "magic number" for gemini files

[cage]

On Sat, Dec 26, 2020 at 06:25:43PM -0500, Sean Conner wrote:

[...]

> > I was  thinking abo[u]t file(1) and  libmagic in general.
>
>   I use libmagic for my server [1] and yet, I still use an extension to mark
> a Gemini text file.

Do you mean you check the file extension for recognize a gemini file?
Or  you use  same kind  of heuristic  to prevent  libmagic to  returns
gemini file as text?

Bye!
C.