You can specify country specific characters during configuration. 
    This is (currently) the place to customize the delimiter set. Other 
    way round: You can specify, which chars make up words. 

    You can "misuse" this feature to force special characters ('-', 
    '+', ...) to be treated as parts of words. 

    If you insist on indexing things like 'Universität', you 
    should enter '&;' as country specific characters: 

        You can compile freeWASI-sf with it's own ctype package. You
        should do this, if you want to use special (country specific)
        chars, which are not supported by your systems ctype.
        Use your systems ctype (no)?
     >  
        Ok, will use my own ctype

        
        I will now ask for your special letters. If you do not want
        to give the now, edit Default.tmpl after this configure run.
        Input your upper case letters in the same order than your
        lower case letters. toupper() and tolower() depend on this
        order. Input letters which are upper and lower case in both
        strings.
        what are your lower case letters (äöüß)?
     >  &;
        what are your upper case letters (ÄÖÜß)?
     >  &;

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