s/(?<!<)p\sclass=/<p\sclass=/;

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Using of space as '\s' why s is displayed between p and class 
<psclass="Hi">
<p class="new">

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In reply to Re^2: replace at the begining by Anonymous Monk
in thread replace at the begining by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


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