title: What to set as mimetype for CSV files to open in spreadsheet applications
body: <p>My application lets users download their data as CSV files. These are supposed to open in spreadsheet applications. On a Linux system, I get prompted correctly to open with OpenOffice, but some of my users complain that when they download the file, it does not open automatically Excel, but asks them to choose the application. When they download a CSV from some other site, it opens correctly in Excel.</p>
  
  <p>I am setting:<br>
   mimetype: text/csv<br>
   content_disposition: attachment; filename.csv</p>