Function words

static/editor.md/lib/codemirror/mode/sieve/sieve.js:15–19

(str)

CodeMirror.defineMode("sieve", function(config) {
  function words(str) {
    var obj = {}, words = str.split(" ");
    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
    return obj;
  }

  var keywords = words("if elsif else stop require");
  var atoms = words("true false not");