Different processing of cyrillic text compared to ascii

[kchibisov]

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When using Крас\x1bниво only Крас is processed with input, while rest terminals(vte, xterm) output Красиво. On the other side Hello\x1bworld will process with input Hello and orld only consuming w.

[chrisduerr]

I've looked into this a little bit and the solution is likely to move the unicode parser table definitions from the Ground state to the Anywhere state.

I'd have to think a bit more of the concrete implications, but I don't think unicode is valid as part of any escape sequence? Though Alacritty certainly accepts in right now for URLs for example.