<hppavilion[1]> mislearn mycology is a Befunge-98 (also -93 to some extent) testsuite that can be found at https://deewiant.iki.fi/projects/mycology/

#!/bin/sh
if [ $# -ne 0 ]; then for f in "$@"; do echo "#!/bin/cat" && cat "$f"; done; else echo "#!/bin/cat" && cat; fi