I would also change 
print "bad type: $type"

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to 
die "bad type: $type"

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just so you don't have to endure output like 
bad type: letterbad type: letterbad type: letterbad type: letterbad ty
+pe: letterbad type: letterbad type: letterbad type: letterbad type: l
+etterbad type: letterbad type: letterbad type: letterbad type: letter
+bad type: letterbad type: letterbad type: letterbad type: letterbad t
+ype: letterbad type: letterbad type: letterbad type: letterbad type: 
+letterbad type: letterbad type: letterbad type: letterbad type: lette
+rbad type: letterbad type: letterbad type: letterbad type: letterbad 
+type: letterbad type: letter$

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In reply to Re^2: custom args with perl -an type invocation? by andyford
in thread custom args with perl -an type invocation? by tphyahoo

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