To close the loop on this, during today's IPP conference call we decided to file an errata on 5100.9 to note that "printer-alert" and "printer-alert-description" SHOULD NOT be reported when the prtAlertTable is empty.
I have also included this in the latest IPP Everywhere v1.1 draft along with a note concerning existing implementations that choose to report '' or 'code=other' for an empty table. IPP Everywhere 1.1 also now makes this attribute RECOMMENDED for physical printers and OPTIONAL for print servers.
The IPP Everywhere self-certification tools will also be updated to a) not require printer-alert or printer-alert-description and b) allow printer-alert to be the empty string.
> On Mar 21, 2020, at 11:37 PM, Rizzo, Christopher <Christopher.Rizzo at xerox.com> wrote:
>> Mike,
>> I get a failure for printer-alert when running ipp-tests.sh because there are no alerts present in the printer and IPP printer-alert attribute is blank. Is it not supposed to be blank? I can't find in specs an explicit statement of what the value of printer-alert should be when there are no alerts present.
>> Thanks,
> Chris
>> Christopher Rizzo
> Xerox Corporation
> GDG/Discovery/Advance Technology
> 26600 SW Parkway Ave.
> Wilsonville, OR 97070-9251
> Phone: (585) 314-6936
> Email: Christopher.Rizzo at xerox.com>> "The realization came over me with full force that a good part of the remainder of my life was going to be spent in finding errors in my own programs."
> -Maurice Wilkes, Memoirs of a Computer Pioneer
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Michael Sweet