[Gen-art] Re: Gen-ART Review of draft-ietf-dnsext-dns-name-p-s-01

Hi Spencer

Thanks again for your time and effort in reviewing this document.
Comment below (though not forgetting I'm to wait for further
guidance from Margaret).

"Spencer Dawkins" <spencer@mcsr-labs.org> writes:

> I understand this concern (with MY suggested text :-) - no one said writing 
> was easy). If

:-)

>     4.  Decrement the value of the least significant (right-most) octet
>         of the least significant (left-most) label (if the resulting octet
>         corresponds to uppercase US-ASCII letters, repeat until it
>         does not), and then append the least significant (left-most)
>         label with as many octets as possible of the maximum sort
>         value.  Continue to the next step.
> 
> helps, please consider it (and discuss with Margaret if you like it); if it 
> does not, then you have considered all of MY alternative wordings that seem 
> to have the effect of reducing rather than enhancing clarity. ;-)

Actually "repeat until" is overly-prescriptive.  Skipping values which
correspond with ASCII uppercase letters needn't (and probably
shouldn't) involve iterative increment/decrement operations.  If the
value of an octet after an increment/decrement operation corresponds to
an uppercase letter, then changing its value to the next sequential
non-uppercase value is sufficient.  For example:

	val--;
	if (val == 'Z') {
		val = '@';
	}

. . . rather than:

	val--;
	while (isupper(val) == TRUE) {
		val--;
	}

> Just so you know - this week, Gen-ART is also reviewing a draft with 120 
> pages of corrections to a 134-page standards-track  RFC, so I'm probably 
> MORE sensitive to clarity issues than I will be for the next telechat - and 
> perhaps I should apologize for that sensitivity!

Um . . . oh dear . . . good luck.

Regards

Geoff

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