- is there an usable font the cover all unicode ?
- if not is there really a point to include everything possible in unicode ?
- how many space is remaining for new alphabet and smileys ?
- how do they handle changes in scripts, for example if new proto-cuneiform or seal script symbols are discovered ?
Needing to load three fonts to show a single document that mixes vastly different character sets is still infinitely better than not being able to have those different characters in the same .txt or .md file at all
> how many space is remaining for new alphabet and smileys ?
Unicode can encode about 1100k code points, and about 800k of those are currently unassigned and available for future scripts or characters
They get added in the next Unicode revision.
In Unicode you have "blocks" [0] that are often bigger than the number of characters in a script, language or function. There are usually also space for new blocks between unrelated blocks.
For example, in the case of cuneiform, it was introduced in Unicode 5.0, and there have been revisions in 7.0 and 8.0 [1]
--
0: https://en.wikipedia.org/wiki/Unicode_block
1: https://en.wikipedia.org/wiki/Cuneiform_(Unicode_block)#History[2] https://www.unicode.org/L2/L2025/25017-miscellaneous-musical...
There is also GNU unifont [1] "The original intent of Unifont was to offer a simple font format with wide Unicode coverage to render something meaningful for each Unicode code point"