Dot matches code point

dot-codepoint.js

// Updated for XRegExp 3.0.0

// Make unescaped dots outside of character classes match any code point rather
// than code unit. Accounts for XRegExp's flag s (aka dotall or singleline).
XRegExp.addToken(/\./, function(match, scope, flags) {
    return flags.indexOf("s") > -1 ?
        "(?:[\ud800-\udbff][\udc00-\udfff]|[\0-\uffff])" :
        "(?:[\ud800-\udbff][\udc00-\udfff]|[\0-\x09\x0b\x0c\x0e-\u2027\u202a-\uffff])";
});

It should be obvious, but this requires XRegExp (GitHub). Surrogate pairs are used to match code points beyond the BMP (U+010000 to U+10ffff).

Following are the four line breaks not matched by dots unless flag s is used:

• U+00000a — Line feed — \n
• U+00000d — Carriage return — \r
• U+002028 — Line separator
• U+002029 — Paragraph separator