On 2 September 2011 21:38, Roy T. Fielding wrote: [http-bis] > OWS = *( HTAB / SP / obs-fold ) > ; "optional" whitespace > obs-fold = CRLF ( HTAB / SP ) > ; obsolete line folding Clearer. JFTR, this is still "avoid *any* folding", and not "avoid more than one folding". And if you like... > origin = "Origin:" [ SP ] origin-list-or-null ...I wonder why you don't demote HTAB generally to "obsolete" in OWS. Or why you don't propose *WSP instead of [SP] in the Origin header field. It would be odd if the overall HTTPbis rules and the specific Origin header field have different ideas about "optional white space" (modulo <obs-fold>, i.e., eliminating <obs-fold> in a new header field Origin is fine). One optional SP is not the same as zero or more ( HTAB / SP ). -Frank _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf