])
AT_DATA([b.data], [dnl
1bN
-3bO
+3 O
4bP
6bQ
7bR
BY a.
LIST.
])
+ cat update.sps
AT_CHECK([pspp -O format=csv update.sps], [0], [dnl
update.sps:6: warning: UPDATE: Encountered 3 sets of duplicate cases in the master file.
1,b,B,N,1,1
1,a,C,,1,0
2,a,D,,1,0
-3,b,E,O,1,1
+3,a,E,O,1,1
4,b,F,P,1,1
5,a,G,,1,0
5,a,H,,1,0