Re: [precis] Directionality rule (Was: Review of current document draft-ietf-precis-framework-20)

[Pete Resnick <[e-mail]>]

On 2/11/15 7:59 PM, Peter Saint-Andre - &yet wrote:
> One thing that bothers me here is that we're not providing actionable 
> guidance to the vast majority of non-delusional profile authors. Are 
> we saying that it's not a good idea to say anything about 
> directionality at all?

In my mind there are two possibilities that a profile author ends up with:

1. My application doesn't care whether the strings I'm using appear 
differently in different contexts. If a string looks one way to a person 
on a LTR system and a different way to a person on an RTL system, that's 
fine. I don't care what order the characters appear (for instance, if 
numerals appear before or after punctuation).

or:

2. I want my strings to appear consistently. Numerals appearing on one 
side of a dot on an LTR system and on the other side of a dot on an RTL 
system would be a really bad thing.

If 1, your profile should say, "Directionality Rule: None".

If 2, then you want "Directionality Rule: Something", and unless you 
have some magic specialized knowledge (that you don't, trust us), you 
want "Directionality Rule: 5893". And, BTW, you had better be basing 
things on IdentifierClass; 5893 is *not* sane if you're basing on 
FreeformClass, and you probably meant to give answer #1 above.

Do we agree that the above is what the WG is saying? If so, does the 
text capture that?

pr

-- 
Pete Resnick<http://www.qualcomm.com/~presnick/>
Qualcomm Technologies, Inc. - [phone]