Function Vim

static/js/codemirror/keymap/vim.js:256–2584

()

  ];

  var Vim = function() {
    var alphabetRegex = /[A-Za-z]/;
    var numberRegex = /[\d]/;
    var whiteSpaceRegex = /\s/;
    var wordRegexp = [(/\w/), (/[^\w\s]/)], bigWordRegexp = [(/\S/)];
    function makeKeyRange(start, size) {
      var keys = [];
      for (var i = start; i < start + size; i++) {
        keys.push(String.fromCharCode(i));
      }
      return keys;
    }
    var upperCaseAlphabet = makeKeyRange(65, 26);
    var lowerCaseAlphabet = makeKeyRange(97, 26);
    var numbers = makeKeyRange(48, 10);
    var SPECIAL_SYMBOLS = '~`!@#$%^&*()_-+=[{}]\\|/?.,<>:;\"\'';
    var specialSymbols = SPECIAL_SYMBOLS.split('');
    var specialKeys = ['Left', 'Right', 'Up', 'Down', 'Space', 'Backspace',
        'Esc', 'Home', 'End', 'PageUp', 'PageDown', 'Enter'];
    var validMarks = upperCaseAlphabet.concat(lowerCaseAlphabet).concat(
        numbers).concat(['<', '>']);
    var validRegisters = upperCaseAlphabet.concat(lowerCaseAlphabet).concat(
        numbers).concat('-\"'.split(''));

    function isAlphabet(k) {
      return alphabetRegex.test(k);
    }
    function isLine(cm, line) {
      return line >= cm.firstLine() && line <= cm.lastLine();
    }
    function isLowerCase(k) {
      return (/^[a-z]$/).test(k);
    }
    function isMatchableSymbol(k) {
      return '()[]{}'.indexOf(k) != -1;
    }
    function isNumber(k) {
      return numberRegex.test(k);
    }
    function isUpperCase(k) {
      return (/^[A-Z]$/).test(k);
    }
    function isAlphanumeric(k) {
      return (/^[\w]$/).test(k);
    }
    function isWhiteSpace(k) {
      return whiteSpaceRegex.test(k);
    }
    function isWhiteSpaceString(k) {
      return (/^\s*$/).test(k);
    }
    function inRangeInclusive(x, start, end) {
      return x >= start && x <= end;
    }
    function inArray(val, arr) {
      for (var i = 0; i < arr.length; i++) {
        if (arr[i] == val) {
          return true;