From c7023218d3c43093371ec01ed6a7aaf93cbcbd4c Mon Sep 17 00:00:00 2001
From: Markus Triska <triska@metalevel.at>
Date: Tue, 3 Sep 2019 20:36:11 +0200
Subject: [PATCH] ENHANCED: Support multiple free days for teachers, closing
 #2.
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Reported by Thure Dührsen. Many thanks!
---
 simsttab.pl | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/simsttab.pl b/simsttab.pl
index 21005d8..89ab483 100644
--- a/simsttab.pl
+++ b/simsttab.pl
@@ -152,12 +152,9 @@
         include(teacher_req(Teacher), Rs, Sub),
         pairs_slots(Sub, Vs),
         all_different(Vs),
-        (   teacher_freeday(Teacher,F) ->
-            maplist(slot_quotient, Vs, Qs),
-            all_diff_from(Qs, F)
-        ;   true
-        ).
-
+        findall(F, teacher_freeday(Teacher, F), Fs),
+        maplist(slot_quotient, Vs, Qs),
+        maplist(all_diff_from(Qs), Fs).
 
 sameroom_var(Reqs, r(Class,Subject,Lesson), Var) :-
         memberchk(req(Class,Subject,_Teacher,_Num)-Slots, Reqs),