title: Regex match every occurance and wildcard condition
body: <p>How can I write a regex that will match the following conditions: </p>
  
  <p>Where every instance of the occurance 'eVar7=' contains the following 'unav'</p>
  
  <p>This should be false: </p>
  
  <p>;AA;;;;eVar7=nr_unav,;AA;;;;eVar7=br_unavail,;AA;;;;eVar7=sugg,;AA;;;;eVar7=sugg,;AA;;;;eVar7=sugg</p>
  
  <p>and this should return true: 
  ;AA;;;;eVar7=nr_unav,;AA;;;;eVar7=br_unavail,;AA;;;;eVar7=nr_unav,;AA;;;;eVar7=nr_unav11,;AA;;;;eVar7=nr_unavasdfasdferwgf</p>