Wise monks, I have a question. How can I substitute every occurence of  cat with  <a href=x>cat</a> and every occurence of  Cat with  <a href=x>Cat</a> As a first attempt, I defined 
 
$term=cat;
$newterm="<a href=x>$term</a>";
$text=~s/(\W)$term(\W)/\1$newterm\2/i;

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but this turns  Cat into  <a href=x>cat</a> that is, I lose the capitilization of the term. Thank you for sharing of your wisdom.

In reply to substitution preserving capitilization by Anonymous Monk

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