If you can share (e.g., is it a wordlist generator, a data parser, or a gaming script?), I can give you a much more tailored feature idea!
If you are working with the Polish-specific combo files mentioned: : warszawa Feature : -mode polish
: Automatically converts Polish characters like ą, ć, ę, ł, ń, ó, ś, ź, ż into common visual substitutes used in local passwords (e.g., ł ➔ l , / , or 7 ).