Nek ignores and clobbers existing *.sch file

Nek5000/core/connect2.f

@@ -320,7 +320,7 @@ C
       IFCYCLIC  = .false.
       IFSYNC    = .false.
       IFEXPLVIS = .false.
-      IFSCHCLOB = .false.
+      IFSCHCLOB = .true.
 c     IFSPLIT   = .false.
       IFCMT     = .false.
       IFVISC    = .false.