AT_CHECK([pspp -O format=csv rank.sps], [1], [dnl
rank.sps:15.1: error: RANK: Syntax error at end of command: expecting `@{:@'.
-rank.sps:19.11: error: RANK: Syntax error at `d': expecting integer.
+rank.sps:19.11: error: RANK: Syntax error at `d': Expected positive integer for NTILES.
rank.sps:25: error: RANK: Variable x already exists.