Fellow monks:

I come before you to request the help of your collective wisdom for this problem...

For a module I am writing, I want to create a kind of filter that removes extraneous data from the calls to methods that are defined by third party modules. In this particular example, I am failing miserably to do so with warnings::warn

*clone_warn = *warnings::warn;

*warnings::warn = sub
{
    print "Look ma!\n";
    clone_warn(some_filter_function_i_provide @_);
};

[download]

The problem is that as soon as I change warnings::warn, the alias I keep in clone_warn also changes, as would be expected. I've also tried any number of combinations of code references, closures, GLOBs to no avail.

What I want to achieve is the redefinition of the original function (warnings::warn) while keeping a reference to the original implementation, so that I can call it from my version. This is similar in concept to a proxy method or a call to ->SUPER::foo() in OO terms.

How can I achieve this? There has to be a way to do it...

Best regards

-lem, but some call me fokat

In reply to How to stack a call to a class method by fokat

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