Hi all,

my opinion is to keep with the current recommendation, which better supports 
automatic parsing and the existing conforming datasets.
In particular, I would avoid any parsing rule for the conventions attribute, 
keeping its syntax as simple as possible (as Jonathan points out, 
blank-separated lists are more CF-like).

I think it makes sense to require convention identifiers not to contain spaces 
(as usual in identifiers).
Those conventions that have not followed Unidata recommendation may be dealt 
with on a transitional basis (e.g. by means of specific parsing exceptions), 
while they are aligned in a future revision.

Best wishes,
  LB

Il giorno 22/dic/2011, alle ore 10:11, Jonathan Gregory ha scritto:

> Dear all
> 
> The existing Unidata recommendation is OK and we could incorporate it into
> CF but it would help to be more precise, for instance: If the Conventions att
> includes no commas, it is interpreted as a blank-separated list of 
> conventions;
> if it contains at least one comma, it is interpreted as a comma-separated 
> list.
> Blank-separated lists are more CF-like - many CF attributes use that syntax -
> but obviously we can't insist that other conventions don't have blanks in 
> their
> names, and it would be simpler therefore to use a comma-separated list for
> this attribute, despite the Unidata recommendation.
> 

---
Dott. Lorenzo Bigagli
Consiglio Nazionale delle Ricerche
Istituto di Metodologie per l'Analisi Ambientale (CNR-IMAA)

i: Area della Ricerca di Potenza, Contrada Santa Loja
   Zona Industriale, 85050 Tito Scalo (PZ), Italia
t: +39 0971 427221
f: +39 0971 427222
m: [email protected]

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