$option_line = join ' ', @ARGV; #reconstitute
my @pairs = m/(\w+:\s+\w+)/g; # grab option pairs

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You missed matching against "$option_line" ... 
my @pairs = ( $option_line =~ m/(\w+:\s+\w+)/g );

[download]

In reply to Re^2: Command Line Options without "-" or "- -" by parv
in thread Command Line Options without "-" or "- -" by Smaug

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