Re: $head->get issues possibly.

On Mon, 5 Apr 2004, David A Golden wrote:

> Generally, I think it would be useful to have Mail::Box be able to validate 
> each of the major headers against these rules rather than to have users 
> have to do it.  (E.g., if $msg->validFrom() ).  (Mark, how hard would this 
> be to add?)
> 
> For this purpose, where you don't really care if there is a header line or 
> if it's blank because you're creating a report, I'd just use this kind of 
> perl idiom:
> 
> my $from = $head->get('From') || '';

You know it has been a long 6 months.  I was thinking of all kinds of 
silly ways to do this.

> I wouldn't want Mail::Box to give me empty strings instead of
> undefined as a blank header line is valid.  There's really three (er,
> four)  states.  Present with valid contents, present with invalid
> contents, present and empty, and not-present.  (With empty often just
> a subset of valid.)

Well since an empty From is OK (I don't think a missing From though) then
in that case it should return and empty string but in the case of missing
headers I agree it should be undef'd.


Rod
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