Philip Martin wrote on Fri, Oct 29, 2010 at 08:58:02 +0100: > Can we treat the string as a bytes and just increment and carry?
No, this might invalidate the UTF-8 sequence. If a character spans multiple bytes, then those bytes have header bits of the form /^1+0/ (in regex), so incrementing the byte blindly will eventually invalidate the byte sequence by turning the 0 into a 1.
