syntax error if its a shell script
regex error if it perl (non-strict)
php just regurgitates it
its bad postscript (for sure, three different interpreters die on it)
multiple syntax errors if its awk
multiple unknown commands if its a sed script
its a bad festival command file
its definitely a problematic python script with invalid syntax (v2.4 - v2.6)
a class exception error if its a java something or other
it doesn't render as html5
Ok, I give up.