Thank you for the reminder, Mark, I had forgotten about your suggestion. If we are going for a SBCL-specific solution, I believe that all references are stored in plain text files at some points (the .asd files and the .lisp files) which are often encoded in ASCII / UTF-8, so searching these files without having to deal with their encoding might be enough. But of course this is less general and more brittle. Mark, Guillaume, would you have time to give this a try? I'm a bit busy at the moment. Let me know if you can't work on it, I'll try to find time to work on a patch. Cheers! -- Pierre Neidhardt https://ambrevar.xyz/