metric for block coverage

[David Starner via Unicode]

On Sat, Feb 17, 2018 at 3:30 PM Adam Borowski via Unicode <
unicode at unicode.org> wrote:
> þ or ą count the same as LATIN TURNED CAPITAL
LETTER SAMPI WITH HORNS AND TAIL WITH SMALL LETTER X WITH CARON.

þ is in Latin-1, and ą is in Latin-A; the first is essential, even in its
marginal characters, and the second is pretty consistently useful in the
modern world. I don't see the problem or solution here; if something
supports a good chunk of the Arabic block, then it supports Arabic, and if
you need Persian and it supports Urdu instead, or vice versa, that's no
comfort.

Too bad, that wouldn't work for symbols, or for dead scripts: a good runic
> font will have a complete coverage of elder futhark, anglo-saxon, younger
> and medieval, while only a completionist would care about franks casket or
> Tolkien's inventions.
>

Where as I might guess that the serious users of Tolkien's runic might
rival or outnumber the users of the scripts for other purposes; after all,
Anglo-Saxon and other languages that appeared in Runic all have standard
Latin orthographies that are more suitable for scholarly purposes.
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