> BTW there is another bug where if an older rpm does not
know about a
> newer field, it returns undef. I think the correct
behavior is for it to
> return "(none)".
> I.e. asking an older rpm about URL returns nothing. It
exposed a bug/
> workaround I had to put in to set undef values.
for the record the correct behaviour in this case should be
to return "(none)"
Returning an explicit "(none)" rather than an error message when querying an
using a legacy version of rpm would confuse two distinct problems
1) rpm does not know about a tag.
2) the tag does not exist.
which have different solutions (i.e. 1) is fixed by upgrading rpm, 2) is a
packaging or query option problem).