[comment500]

Maybe the universal solution to this is for the Unicode Consortium to dedicate a set of codepoints for encoding SVG or something similar.

Then the system text renderer can be responsible for drawing these diagrams, and they can be embedded anywhere in text.

It would also have the side benefit of letting people draw their own emojis, rather than waiting some time from months to never to have their suggestions included in the next Unicode release.

[rocqua]

I beg you, do not give them ideas.

Leave plaintext to be as plain as possible. Emoji were already a bad compromise made to get Japanese encodings to sort-of work. Leave markup to general markup languages. Don't make unicode even more convoluted.