my $test = "tegular-expressions-cheat-sheet_áíé-v2.pdf";

$test =~ tr{&[]ÀÂÄàâäÇçÉÊÈËéêèëÏÌÎïìîÖÔÒöôòÜÛÙüûù?!;«»()" íóñÑáéóúÁÉÍÓÚ}{___aaaaaacceeeeeeeeiiiiiioooooouuuuuu_________ionnaeouaeiou};

print "now: $test \n";