title: Eclipse Neon 2, "No local history available for selected resource" for all files
body: <p>I have updated many files many times, but the history window is always blank, and if I do right click on the file then "compare with local history..." it always pops up and says "No local history available for selected resource"</p>
  
  <p>When I go to Window ->Preferences > General > Workspace > Local History, I see "Limit history size" is ticked with 7 days, 50 entries per file and 1MB max file size.</p>
  
  <p>However, if i edit and save a file with 10 lines in it, there is no history.</p>
  
  <p>How do I get local history working?</p>
  
  <p>This is a real killer because the groovy eclipse plugin keeps crashing, and then I can't save the file so each time it happens I lose all my changes.</p>
  
  <p>I updated to neon 3, but same problem - no local history.</p>
  
  <h1>Update</h1>
  
  <p>I didnt realise, its just groovy files for which no local history exists.  Unfortunately, this is 99% of my files (grails)</p>