Echo "Blank lines below indicate bugs. " ;
Echo "Look for inaccurate statements as well " ;
Echo ---------- begin test ---------- ;
 
VAR = 1 2 3 4 ;
Echo $(VAR[2-2]) is the substring 2 ;
Echo $(VAR[2]) is the same as above ;
Echo $(VAR[2-3]) is the substring 2 3 ;
Echo $(VAR[2-1]) there are no numbers to the left of this text ;
Echo $(VAR:J=.) is the join of $(VAR) with . ;
Echo $(VAR[2-]:J=.) is join of $(VAR[2-]) with . ;
Echo $(VAR[2-3]:J=.) is join of $(VAR[2-3]) with . ;  # works?
Echo $(VAR[2-4]:J=.) is join of $(VAR[2-4]) with . ;
 
VAR = a b c d ;
Echo "Upshifts:" ;
Echo $(VAR) becomes $(VAR:U) ;
Echo $(VAR[2-3]) becomes $(VAR[2-3]:U) ;
Echo $(VAR[2-]) becomes $(VAR[2-3]:U) ;
Echo $(VAR[2-4]) becomes $(VAR[2-4]:U) ;
 
Echo "Upshifts with joins:" ;
Echo $(VAR[2-3]) becomes $(VAR[2-3]:UJ=".") ;
Echo $(VAR[2-]) becomes $(VAR[2-]:UJ=".") ;
Echo $(VAR[2-4]) becomes $(VAR[2-4]:UJ=".") ;
 
Echo "X by Y: expect 4, 9 and 9 elements" ;
Echo $(VAR[2-3])$(VAR[2-3]:U) ;
Echo $(VAR[2-])$(VAR[2-]:U) ;
Echo $(VAR[2-4])$(VAR[2-4]:U) ;
 
Echo "Other text before and after expansion: " ;
Echo pre $(VAR[1-3]) foo ;
Echo pre $(VAR[1-3]:J=.) foo ;
 
Echo "Expanding joins:  blank lines are bad!" ;
FOO = "carbacidometer" ;
Echo $(VAR[2-]:J=$(FOO)) ;
Echo $(VAR[2-4]:J=$(FOO)) ;
Echo $(VAR[2-3]:J=$(FOO)) ;
 
Echo "Indirection:" ;
FOO = foo ;
VAR = a b ;
BAR = F O ;
Echo $($(BAR:J=O)) should be $(FOO) ;
BAR = FOO VAR ;
Echo $($(BAR):J=.) should be $(FOO:J=.).$(VAR:J=.) ;
 
Echo ---------- end test --------------- ;