exclude case expressions in A13, they are always multi-line

Author: PhilippSalvisberg

settings/sql_developer/trivadis_custom_format.arbori

@@ -1125,10 +1125,19 @@ a13_short_nodes:
         return false;
     }
 
+    var containsCase = function(node) {
+        for (var i=node.from+1; i < node.to; i++) {
+            if (target.src.get(i).content.toLowerCase() == 'case') {
+                return true;
+            }
+        }
+        return false;
+    }
+
     var maxLen = maxCharLineSize / 2;
     var node = tuple.get("node");
     if (getNodeLength(node) <= maxLen) {
-        if (breaksConcat == Format$Breaks.None || !containsConcat(node)) {
+        if ((breaksConcat == Format$Breaks.None || !containsConcat(node)) && !containsCase(node)) {
             reduceNodeIndents(node);
         }
     }