patch dc30edb7135409c41683a29f0a23684e7805693c
Author: Enrique D. Bosch <presidev@AT@gmail.com>
Date:   Sun Sep  2 19:44:50 CEST 2018
  * Use defaulted argument in imap_command_tagged function, ifempty function not necessary
diff -rN -u old-idlebiff/idlebiff new-idlebiff/idlebiff
--- old-idlebiff/idlebiff	2024-05-05 11:54:13.871339305 +0200
+++ new-idlebiff/idlebiff	2024-05-05 11:54:13.879339322 +0200
@@ -30,7 +30,6 @@
 proc or args { foreach x $args { if { $x } { return 1 } }; return 0 }
 proc and args { foreach x $args { if { $x } continue  { return 0 } }; return 1 }
 
-proc ifempty { str alt } { if {[ eq $str {} ]} { return $alt } else { return $str } }
 
 proc check_conf_and_set_default { opt default } \
 {
@@ -288,12 +287,12 @@
   set_timeout
 }
 
-proc imap_command_tagged { con com args } \
+proc imap_command_tagged { con com { prefix A } } \
 {
   variable ::static::tag
 
   if {[ == $tag 10000 ]} { set tag 1 }
-  append tcom [ ifempty $args A ] [ format %04d $tag ] { } $com
+  append tcom $prefix [ format %04d $tag ] { } $com
   imap_command $con $tcom
   incr tag
 }