[Python-3000] Lines breaking

["Martin v. Löwis"]

> The change would extend the line breaking behavior to three other
> ASCII characters:
>   NEL "Next Line" 85
>   VT "Vertical Tab" 0B
>   FF "Form Feed" 0C

Of these, NEL is not an ASCII character, so Guido's "no change
for ASCII-only text" requirement doesn't apply to text containing
NEL.

> Of course, it is not really necessary to change, but I think full
> conformance to the standard [1] could give Python better support of
> multilingual texts. However, full conformance would require a good
> amount of work. So, it is true that it is probably better to postpone
> it until someone complaint.

Can you please point to the chapter and verse where it says that VT
must be considered? I only found mention of FF, in R4.

Regards,
Martin