How to match the multi-byte characters in SAS?

[yabwon]

You could try to solve your problem with the K...() functions:

data test;
  x = "ŻÓŁĆ";

  y = "Ł";

  z = kfind(x,y);
  t = kcompress(x,y);
  w = ktranslate(x,"L",y);
  v =  tranwrd(x, "ÓŁ", "OL"); /* no-K function! */

  put _aLL_;
run;

Log:

All the best

Bart