# ruby -wc says syntax ok
# ruby -w says blah.rb:2: undefined local variable or method `index' for main:Object (NameError)
if index < 0 and $VERBOSE
$stderr.puts "warning: index is a negative number"
if $DEBUG
$stderr.puts "index value: #{index.inspect}"
$stderr.puts "array state: #{array.inspect}"
end
end
~~~~~~~~~~
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