Re: draft-ietf-httpbis-p1-messaging-16 1.2.1 ABNF Extension: #rule – Invalid example?

On 2011-10-26 15:08, Håkan wrote:
> ...
> Agree with that too. Spaces are allowed BETWEEN the elements and list
> separator. But spaces are not allowed BEFORE the first list separator or
> element, and spaces are not allowed AFTER the last list separator or
> element, according to the list rules. But the example "  foo ,
> ,bar,charlie " states it's allowed.
>
> The rules would have to look something like this to allow OWS before and
> after (not a real attempt to produce correct rules, just to illustrate
> my point):
>
> #element => [  *OWS ( "," / element ) *( OWS "," [ OWS element ] ) *OWS ]
> 1#element => *OWS *( "," OWS ) element *( OWS "," [ OWS element ] ) *OWS
> ...

Ack.

Those are allowed because of the header-field ABNF:

   header-field   = field-name ":" OWS field-value BWS

...but I agree that the prose around the examples needs to say that...

Best regards, Julian