Right. Aiui both Python 3 and Perl 6 allow correct handling of Unicode byte buffers and whole strings.

Which will be great for applications that don't need to do anything at substring or character level.

Afaict, in Python 3, code that does things at substring/character level to Thai, Chinese, etc. text will be:

* buggy, even spuriously cutting characters in half if any string changes are made, if standard string/substring/character functions are used

OR

* verbose and messy, if the reqired-for-correctness grapheme handling is introduced