Chars.

Character set — compare

Set

Set #1: $es5:DoubleStringCharacter-char; [\u0000-\u0009\u000B-\u000C\u000E-!\u0023-\u005B\u005D-\u2027\u202A-\uFFFF]
Set #2: $ecma404:string-char; [\u0020-!\u0023-\u005B\u005D-\u{10FFFF}]
Common set: [\u0020-!\u0023-\u005B\u005D-\u2027\u202A-\uFFFF]
Only in #1: [\u0000-\u0009\u000B-\u000C\u000E-\u001F]
Only in #2: [\u2028-\u2029\u{10000}-\u{10FFFF}]