title: How to ignore whitespaces in regular expression
body: <p>I am new to iPhone.I have a small doubt in regular expressions that at present i am using regular expression below one in my project that is </p>
  
  <pre><code>NSRegularExpression *regularExpression = 
     [NSRegularExpression regularExpressionWithPattern:@"href=\"(.*).zip\"" 
                                               options:NSRegularExpressionCaseInsensitive 
                                                 error:&amp;error];
  </code></pre>
  
  <p>it searches the website viewsource and gives results which are in below pattern</p>
  
  <pre><code>href="kjv/36_Zep.zip"
  href="kjv/37_Hag.zip"
  </code></pre>
  
  <p>but one of the link in view source is like below</p>
  
  <pre><code>href="kjv/38_Zec.zip        "
  </code></pre>
  
  <p>i want to ignore the white spaces after the .zip 
  how it is possible if any body know this please help me</p>