$ perl -le'sub f {}  print exists(&$_)?1:0 for qw( f g )'
1
0

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So for example, the caller runs: my::Error::register('my::Plugins::ThisPlugin::miHandler') but the name of the real sub is myHandler...

Then you should call my::Plugins::ThisPlugin::miHandler. If it throws an error, so be it. If you want to catch the error, use eval BLOCK or whatever module you prefer.

That said, it might make more sense to register the package, then always call a specific method of that package (say ->handle_error()). You could even allow objects in addition to packages for free.

In reply to Re^3: Saving/recovering sub refs in a file by ikegami
in thread Saving/recovering sub refs in a file by madscientist

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