title: Backtrack in Possesive Quantifier
body: <p>Earlier I posted a question about regex which resulted in stackoverflow error in java. My Regex was greedy and many commented to use possessive quantifier in regex. So, I started learning Possessive quantifier in regex.</p>
  
  <p>I tried to match string between double quotes. My regex is </p>
  
  <pre><code>"([^\\"]|\\.)++"
  </code></pre>
  
  <p>I tried to match the string </p>
  
  <pre><code>"Hello I am \" chitti"
  </code></pre>
  
  <p>While matching there was backtracks. I tested using <a href="http://regex101.com/#PCRE" rel="nofollow noreferrer">http://regex101.com/#PCRE</a>. The link to regex is <a href="http://regex101.com/r/eL0uG6" rel="nofollow noreferrer">REGEX 101 LINK</a></p>
  
  <p><img src="https://i.stack.imgur.com/Qs3kM.png" alt="enter image description here"></p>
  
  <p>Can someone please explain why there is a backtrack involved steps 6,8,10 etc</p>