https://bugs.gentoo.org/47691
https://bugs.gentoo.org/47764
https://lists.gnu.org/archive/html/bug-a2ps/2001-05/msg00000.html
--- a2ps-4.14/lib/printers.c
+++ a2ps-4.14/lib/printers.c
@@ -315,8 +315,8 @@
   res->ppd = NULL;		/* Printer's ppd are not read yet */
 
   /* Output */
-  /* Default is to send to default printer */
-  res->flag_output_is_printer = true;
+  /* Default is to send to stdout */
+  res->flag_output_is_printer = false;
   res->flag_output_name = NULL;
   res->output_is_file = true;
   res->output_name = NULL;