ietf-nntp Overview and non-printing characters

[Clive D.W. Feather]

Russ Allbery said:
> In reviewing the draft, I found that we'd not yet resolved the previous
> discussion of overview and we still have the original text in the draft
> regarding how to generate overview information:
> 
>     Any sequence of US-ASCII space or non-printing characters in a field
>     MUST be replaced by a single US-ASCII space.
[...]

I'm generally happy with your suggested changes.

I'd like to specifically point out that Usefor is moving to UTF-8 encoding
for articles. This means that octets 128 to 255 will be part of this data,
and it is important that people do *not* think that "US-ASCII non-printing"
includes such characters. Your changes do this; let's make sure it doesn't
accidentally get undone at a later date.

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