foo() may or may not be called, depending on @ARGV.

Better. A clear example rather than oblique allusions.

The only way to really do this was covered earlier: with a comprehensive test suite and gradual code modification.

And how do you test that your test suite is comprehensive?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^5: Cleaning up unused subroutines by BrowserUk
in thread Cleaning up unused subroutines by koknat

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