in reply to Catching errors in closing lexical filehandles

It's actually rather simple.
sub IO::Handle::DESTROY { my $deadbody = shift; not defined fileno $deadbody or close $deadbody or die "Cannot close $deadbody: $!"; }
Of course, this is a global change, but that's life. You can make it regional by putting it inside a local setting:
{ local *IO::Handle::DESTROY = sub { ... }; { open my $fh, "..."; ... } # will trigger here }
The nested parens here ensure that the handle is destroyed before the local sub assignment goes out of scope.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.