In looking at some test files on CPAN recently, I've noticed several with a taint flag in the "shebang" line:
For example, this is the default for the pod.t and pod-coverage.t files from Module::Starter::PBP -- though not, apparently, for regular .t files generated that way.
What's the idea behind flagging .t files for taint checking? Any good rules of thumb for when it's the right thing to do? I wouldn't have thought it a necessity for a test script, unless the test was specifically testing the taint-safe behavior of something.
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