Hi Adam! For string manipulation, the proper encoding has to be considered. It's better to use the provided [#:guess-encoding=#f] [#:encoding=#f] as well. You may take a look at call-with-input-file in document: https://www.gnu.org/software/guile/manual/html_node/File-Ports.html
BTW, in your case, you can ignore the binary mode. Best regards. > >
