ietf-822
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Re: Angle brackets surrounding Content-ID

2004-10-12 08:51:04

Bruce Lilly <ietf-822(_at_)imc(_dot_)org> writes:

And yet again you repeat a whole string of possible scenarios, about
which there is no dispute, whilst steadfastly refusing to answer the
question that was asked, which specifically related to "actual" behaviour.

No Charles, this is not merely "possible scenarios". It is about
the very real situation of comparing identifiers. Either a case-
sensitive or a case-insensitive comparison could be made; one
must decide which. 


Under RFC 822 and its predecessors, where the
RHS of an identifier was always a domain name, the correct
decision is to compare those domain names case-insensitively. The
change in RFC 2822 -- where we are told that the RHS might or
might not be a domain name, and if it is not, we are not told
whether or not it is case-sensitive -- makes that decision
more difficult.  It is an issue of the design of such a
comparator, irrespective of the source of the identifiers.

None the less can you please give an actual case when case would 
change during transport? 

If nothing ever changes the case then you make as well do 
the faster case-sensitive compare.
If anything could change the case then you must do the insensitive 
compare.