Use printer-modified event when changing the default printer (Issue #1246)

Author: michaelrsweet

CHANGES.md

@@ -5,6 +5,8 @@ CHANGES - OpenPrinting CUPS
 Changes in CUPS v2.4.13 (YYYY-MM-DD)
 ------------------------------------
 
+- Updated the scheduler to send the "printer-modified" event whenever the system
+  default printer is changed (Issue #1246)
 - Fixed a memory leak in `httpClose` (Issue #1223)
 - Fixed missing commas in `ippCreateRequestedArray` (Issue #1234)
 - Fixed subscription issues in the scheduler and D-Bus notifier (Issue #1235)

scheduler/ipp.c

@@ -10503,10 +10503,10 @@ set_default(cupsd_client_t  *con,	/* I - Client connection */
   DefaultPrinter = printer;
 
   if (oldprinter)
-    cupsdAddEvent(CUPSD_EVENT_PRINTER_STATE, oldprinter, NULL,
+    cupsdAddEvent(CUPSD_EVENT_PRINTER_MODIFIED, oldprinter, NULL,
                   "%s is no longer the default printer.", oldprinter->name);
 
-  cupsdAddEvent(CUPSD_EVENT_PRINTER_STATE, printer, NULL,
+  cupsdAddEvent(CUPSD_EVENT_PRINTER_MODIFIED, printer, NULL,
 		"%s is now the default printer.", printer->name);
 
   cupsdMarkDirty(CUPSD_DIRTY_PRINTERS | CUPSD_DIRTY_CLASSES |