Re: obs-commas (was: 2822upd-05 just submitted)

On 1/29/08 at 12:19 AM +0100, Frank Ellermann wrote:

>End of 3.3, maybe s/of zone/of the zone/
>
>For <ftext> kill the stray "/" after 126.

Fixed. Thanks.

>| obs-commas      = [CFWS] "," *([CFWS] ",") [CFWS]
>| obs-phrase-list = [phrase / CFWS] *(obs-commas phrase) [obs-commas]
>
>This is rather strange, it was simpler for 2831bis

Yeah, I made obs-phrase-list more complicated than it had to be by 
re-using obs-commas. I guess I could make obs-phrase-list not like 
the others.

>If my proposal is correct the same pattern could be used for all 
>similar obs-lists, eliminating the obscure <obs-commas>.

No, the problem I ran into obs-domain-list, obs-mbox-list, and 
obs-addr-list was that each require at least one 
domain/mailbox/address, but could have multiple commas on either end 
or in the middle. So this is legal:

To:    ,  ,  , [email protected] ,  ,  ,

but this is not:

To:   ,  ,  ,  ,  ,

I'm not sure how to do that with your form. I'd be happy if you had a solution.

>| group-list      = mailbox-list / CFWS / obs-group-list
>[...]
>| obs-group-list  = obs-commas
>
>The most obscure case, is "only CFWS" really *NOT* obsolete ?

Sure, this seems pretty reasonable to do:

To: The Big Mailing List: (Names removed to protect the innocent);

>| obs-bcc = "Bcc" *WSP ":"
>|           [address-list / CFWS / obs-commas] CRLF
>
>: obs-bcc = "Bcc" *WSP ":"
>:           (address-list / ( *([CFWS] ",") [CFWS] )) CRLF

Again, that I can do if I wish to forego reuse of obs-commas. The 
other nice thing about re-using obs-commas here and in 
obs-phrase-list is that it makes it clear why it is there ("Another 
one of those silly collections of just commas").

pr
-- 
Pete Resnick <http://www.qualcomm.com/~presnick/>
Qualcomm Incorporated - Direct phone: (858)651-4478, Fax: (858)651-1102