Cups outputting deleted printers

[ToddAndMargo via users <users@xxxxxxxxxxxxxxxxxxxxxxx>]

Hi All,

Fedora 33

# rpm -qa cups\*
cups-pk-helper-0.2.6-10.fc33.x86_64
cups-pdf-3.0.1-10.fc33.x86_64
cups-libs-2.3.3-18.fc33.x86_64
cups-client-2.3.3-18.fc33.x86_64
cups-ipptool-2.3.3-18.fc33.x86_64
cups-filesystem-2.3.3-18.fc33.noarch
cups-2.3.3-18.fc33.x86_64
cups-libs-2.3.3-18.fc33.i686
cups-filters-libs-1.28.5-3.fc33.x86_64
cups-filters-1.28.5-3.fc33.x86_64

I clean up a bunch of my unused printers.

Problem: printers with the same long name, except for
the end still show is certain programs.

    $ lpstat -a
    B4350 accepting requests since Thu 29 Oct 2020 01:36:30 PM PDT
    Cups-PDF accepting requests since Tue 30 Apr 2019 04:05:39 PM PDT
    Virtual_PDF_Printer accepting requests since Tue 29 Sep 2020 
03:13:17 AM PDT

Which is the way it is suppose to be.


But programs using reading printers using cupsGetDests2,
still get the old deleted printers:

The text: https://bugs.documentfoundation.org/attachment.cgi?id=167701

The Binary: https://bugs.documentfoundation.org/attachment.cgi?id=167702

   #include <iostream>
   #include <cups/cups.h>

   int main() {
       cups_dest_t* dests;
       int nCount = cupsGetDests2(CUPS_HTTP_DEFAULT, &dests);

       for (int i = 0; i < nCount; i++) {
           cups_dest_t dest = dests[i];
           std::cout << dest.name << std::endl;
       }
   }

$ list-printers
B4350
Cups-PDF
Cups_PDF_rn6               <-- deleted
Oki_B4350_on_dev_lp0_rn6   <-- deleted
Virtual_PDF_Printer
Virtual_PDF_Printer_rn6    <-- deleted


Programs without the problem (a sampling):

    Brave Browser, Firefox, Vivaldi, Water Fox,
    Leafpad, Simple scan, Gimp, Inkscape, Thunderbird,
    Geany, Shotwell, PDF Studio 2019

Programs with the problem (also a sampling):

    Wine, Libre Office, Free Office, Master PDF Editor

Any ideas? Is cupsGetDests2 not the proper way of dong this?

-T
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