Function countIf

lib/web/CodeMirror/test/test.js:2471–2475

(arr, f)

}

function countIf(arr, f) {
  var result = 0
  for (var i = 0; i < arr.length; i++) if (f[arr[i]]) result++
  return result
}

function testMoveBidi(str) {
  testCM("move_bidi_" + str, function(cm) {