moseley@bumby:~$ cat txt
EL NiÑo
añotherword

moseley@bumby:~$ swish-e -i txt -T indexed_words -v0
    Adding:[1:swishdefault(1)]   'el'   Pos:2  Stuct:0x9 ( BODY FILE )
    Adding:[1:swishdefault(1)]   'niño'   Pos:3  Stuct:0x9 ( BODY FILE )
    Adding:[1:swishdefault(1)]   'añotherword'   Pos:4  Stuct:0x9 ( BODY FILE )

moseley@bumby:~$ swish-e -w niño -H0
1000 txt "txt" 20

moseley@bumby:~$ swish-e -w niÑo -H0
1000 txt "txt" 20

moseley@bumby:~$ echo $LANG
en_US

-- 
Bill Moseley
moseley@hank.org