# Check that unknown commands output a useful error message ! testscript notfound stdout 'unknown command "notexist"' ! testscript negation stdout 'unknown command "!exists" \(did you mean "! exists"\?\)' ! testscript misspelled stdout 'unknown command "exits" \(did you mean "exists"\?\)' -- notfound/script.txt -- notexist -- negation/script.txt -- !exists file -- misspelled/script.txt -- exits file