title: Regex for all spaces before a number
body: <p>I need to select via RegEx every space before a number.</p>
  
  <p>I know whitespace is \s and digit is \d, but I can't figure out how to just grab the space before the number.</p>
  
  <p>Sample text:
  John Doe 6
  Jane Doe 0</p>
  
  <p>It should select the spaces before 6 and 0.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks!</p>