or download this
$ perl -Mstrict -Mwarnings -E 'my $x = "...-L^\^\+~p...M-^@iM-^OM...M-
+\E+^W...M-\HJ..."; say $x'
Possible unintended interpolation of @iM in string at -e line 1.
...
Unrecognized escape \H passed through at -e line 1.
Global symbol "@iM" requires explicit package name (did you forget to
+declare "my @iM"?) at -e line 1.
Execution of -e aborted due to compilation errors.