From: Marc Heiler <lists@...>
Date: 2012-07-06T05:46:16+09:00
Subject: ENV variables and tainted input

Is it advisable to always use ENV['SOME_VALUE'].dup ?

I seem to stumble into ... tainted input problems or something
like that, and this seems to happen only with ENV stuff.

It is as if the attitude is to never trust these values,
but I can handle incorrect ENV values from within my ruby
script anyway, so I am wondering a bit about the logic
behind this.

Has the use of .dup any serious disadvantage?

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