title: Regex: negative lookbehind with escaped asterisk not working right
body: <p>I have the following data:</p>
  <pre><code>FIT 13.5 ON 16 LNR, LWD[GR,RES,PWD] @ 10340, M12.8, NO SWC, *13-3/8 X 16* (13.9) EXP LNR @ 8696-10340, FIT 14.4, LWD(GR, RES, PWD  
  FIT 12.4 ON 20, LWD[ARC,PWD  
  FIT 15.0 ON 16, LWD[ARC,PWD]  
  FIT 13.3 ON 11-3/4, LWD[ARC,SON,PWD] @ 12065, PREP TO DRILL  
  9-5/8 LNR @ 11695-16163, FIT 14.9, LWD[ARC,SON,DEN,NEUT,CMR,TESTRAK], (SON FAILED), NO SWC, REAMING (TO RUN CSG ) 
  </code></pre>
  <p>I'm trying to write a Regex which will find all fractions without an asterisk, so I used a negative lookbehind:</p>
  <pre><code>(?&lt;=\*)(\d{1,2}-\d\/\d)
  </code></pre>
  <p>Naturally (because nothing can be easy), Regex thinks the 1 in the 13 is part of the lookbehind:</p>
  <p><a href="https://i.stack.imgur.com/qTbtr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qTbtr.png" alt="Regex negative lookbehind" /></a></p>
  <p>If I change it to a positive lookbehind, it works as it should if I wanted to find fractions with an asterisk:</p>
  <p><a href="https://i.stack.imgur.com/3PYmP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3PYmP.png" alt="Regex positive lookbehind" /></a></p>
  <p>That's not what I need. I'm trying to get Regex to ignore all figures between two asterisks in a string.</p>
  <p>Any idea on how to make it do what I need?</p>
  <p>Thanks!</p>