Re: notes on conneg-feature-hash-02

Maurizio Codogno <[email protected]> Thu, 22 Jul 1999 10:23:04 +0200 (MET DST)
Newsgroups gmane.ietf.medfree
Message-ID <[email protected]>
" >But then I think the draft should mandate (even if just in a NOTE) 
" >what happens when there are contrasting informations. If I receive
" >something on the lines of 
" >
" >(& (colors=limited) (colors=full) )
" 
" I'd say the spec is quite clear (if not obvious ;-) on this:  the result is
" an empty feature set.  That expression is logically equivalent to FALSE, so
" there is NO feature collection that it can select.  I'll look to see if I
" can slip in a note that  clarifies this without introducing more confusion.
" 
" 
" >I don't care, since there is an implicit ordering and I can collapse those
" >features to
" >
" >(& (colors=full) )
" 
" Well, no:  see above.

Ok. Thus, the only ordering possible with features is the numeric one
for those features which have numerical values: for every other
feature, the only comparison you can have is "is/is not equal".

I guess this has to be written explicitly in the draft, to avoid
false interpretations like mine.

ciao, .mau.