draft-ietf-nntpext-base-03.txt some comments

[Martin J. Duerst]

Stan Barber answered Paul Overell:

> >   UTF-8-non-ascii = %xC0-FF 1*(%x80-BF) ; UTF-8 encoding of non-ASCII character

I hope you are aware of the fact that UTF-8 can be defined
more exactly. The above expression captures everything you
want to capture if you have only legal UTF-8, but won't
exclude erroneous sequences. Probably that's enough for
our purposes.


> > I have allowed any character to be escaped by a backslash, is this correct?
> > The text in 5. suggests that only [ * \ ? may be escaped.
> 
> In the original wildmat, this was true. However with UTF-8, it may be necessary
> to extend the escape capability. Anyone have comments here?

You need escaping for those characters that do their work
defining the wildcard expressions. If [ * \ ? are the only
characters used for wildcard syntax, or if others can be
escaped otherwise (e.g. ]), you don't need to escape them.

As using non-ASCII characters in wildcard expressions would
mean that some people have difficulties using them, this
will probably never happen. So you don't need to escape them.


Regards,   Martin.