cap2hccapx and odd ESSID

Hi,

I would like to modify cap2hccapx.c (and push it to github if needed) to print ESSID in hexadecimal.
Why ? To display/manipulate odd characters in the ESSID string e.g. russian, accent, etc

Or the question could be : how to give an odd ESSID string as a parameter to cap2hccapx ?

What's the best way to achieve this ? Is hexadecimal the good answer ?

Thank you.