Pete Resnick wrote:
On 1/15/04 at 9:59 PM +0000, Charles Lindsey wrote:
obs-utext = *LF *CR *(obs-char *LF *CR)
[N.B. was obs-text]
No, that does not work because it allows CRLF not followed by WSP in
the middle of an 'unstructured'.
Yup, because you can have "obs-utext obs-utext" which could be (abc
CR)(LF def).
I think the only way out of that is to rewrite the rule for
'unstructured':
unstructured = *(utext [FWS]) obs-ltext
obs-utext = (1*LF *CR / 1*CR) obs-char / NUL
obs-ltext = *LF *CR
Blech. I'll take a look and see what I can figure out without
resorting to that.
I believe that the only place that comes up is in 2822's "unstructured":
unstructured = *([FWS] utext) [FWS]
and could be rewritten to prevent the problem noted. Or a note could be
added stating
that any CRLF which is part of obs-utext must be followed by WS.
Further note that this is obs-syntax, which is not for generation of new
messages.
Also note that ASCII NUL is included in obs-char.