title: Elisp split-string function to split a string by . character
body: <p>I am trying to split a string using 'split-string' function based on the . character. But
  <code>(split-string "1.2.3" ".")</code> doesn't work at all. It just returns a list of variable number of empty strings. Is . a special character that needs to be escaped or specified in some different way?</p>