Yes, the left hand side (except for the last closing bracket) 
<body.+?

[download]
is finding out to 
<body>

[download]
and then continuing out till it hits the next closing bracket. Problem is + finds AT LEAST one character. You want the star * here: 
s/<body.*?>/<body class="theBody">/is

[download]
* finds 0 or more characters. That should solve it! :)

In reply to Re: Non-greedy regex behaves greedily by tphyahoo
in thread Non-greedy regex behaves greedily by fourmi

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