Not all helper scripts need (or even can) act on the detected bad event. That is why the detection of the bad event needs to happen inside the helper script, rather than the main script.

What would detection of the bad event (...) inside the helper script script give you, if that helper script cannot act on the detected bad event as you are saying? Error detection has to happen in the main script, checking the for $@ as you already do.

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^3: Execute function before exit of do() block by shmem
in thread Execute function before exit of do() block by gri6507

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