UTF-8 supports 2**256 codepoints?! I don't think so.

11111110 is the largest byte-count the first byte can encode, so that's followed by 7 groups of 6 bits, or 42 bits total.

The ISO-646 character set is defined on 31 bits. I guess they didn't want to worry about signed/unsigned, or perhaps wanted to leave a bit for the user? Anyway, it's certainly enough.

In reply to Re: Re: Re: How are regex character classes implemented? by John M. Dlugosz
in thread How are regex character classes implemented? by John M. Dlugosz

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