Ruby split with regex - regex isn't doing what i want

i have this string ``` string = "<p>para1</p><p>para2</p><p>para3</p>" ``` I want to split on the para2 text, so that i get this ``` ["<p>para1</p>", "<p>para3</p>"] ``` The catch is that sometimes para2 might not be wrapped in p tags (and there might be optional spaces outside the p and inside it). I thought that this would do it: ``` string.split(/\s*(<p>)?\s*para2\s*(<\/p>)?\s*/) ``` but, i get this: ``` ["<p>para1</p>", "<p>", "</p>", "<p>para3</p>"] ``` it's not pulling the start and end p tags into the matching pattern - they should be eliminated as part of the split. Ruby's regular expressions are greedy by default so i thought that they would get pulled in. And, this seems to be confirmed if i do a gsub instead of a split: ``` string.gsub(/\s*(<p>)?\s*para2\s*(<\/p>)?\s*/, "XXX") => "<p>para1</p>XXX<p>para3</p>" ``` They are being pulled in and got rid of here, but not on the split. Any ideas anyone? thanks, max