The IN: operator might not find valid matches. In the sample below, the addition of the space on the first argument causes the second not to match:

    data _null_;
      input var1 $8.;
      if var1 in: ('ABC ','AB') then
      put 'match';
    datalines;
    ABCDEF
    ;
    run;

Operating System and Release Information

A fix for SAS 9.2 (TS1M0) for this issue is available at:

A fix for SAS 9.2 (TS1M0) with Asian Language Support (DBCS) for this issue is available at: