Maybe consider using Getopt::Long instead of hand-rolling the argument parsing.

Also consider looking at line 171 in your real script, and looking at why that warning is thrown there. For example, if $ARGV[1] is not defined, then that warning will be thrown. Also see splain and warnings.

In reply to Re: throw a warning if no argument were passed by Corion
in thread throw a warning if no argument were passed by deep27ak

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