Function findMatchedSymbol

static/js/codemirror/keymap/vim.js:1768–1818

(cm, cur, symb)

    }

    function findMatchedSymbol(cm, cur, symb) {
      var line = cur.line;
      symb = symb ? symb : cm.getLine(line).charAt(cur.ch);

      // Are we at the opening or closing char
      var forwards = inArray(symb, ['(', '[', '{']);

      var reverseSymb = ({
        '(': ')', ')': '(',
        '[': ']', ']': '[',
        '{': '}', '}': '{'})[symb];

      // Couldn't find a matching symbol, abort
      if (!reverseSymb) {
        return cur;
      }

      // set our increment to move forward (+1) or backwards (-1)
      // depending on which bracket we're matching
      var increment = ({'(': 1, '{': 1, '[': 1})[symb] || -1;
      var depth = 1, nextCh = symb, index = cur.ch, lineText = cm.getLine(line);
      // Simple search for closing paren--just count openings and closings till
      // we find our match
      // TODO: use info from CodeMirror to ignore closing brackets in comments
      // and quotes, etc.
      while (nextCh && depth > 0) {
        index += increment;
        nextCh = lineText.charAt(index);
        if (!nextCh) {
          line += increment;
          lineText = cm.getLine(line) || '';
          if (increment > 0) {
            index = 0;
          } else {
            var lineLen = lineText.length;
            index = (lineLen > 0) ? (lineLen-1) : 0;
          }
          nextCh = lineText.charAt(index);
        }
        if (nextCh === symb) {
          depth++;
        } else if (nextCh === reverseSymb) {
          depth--;
        }
      }

      if (nextCh) {
        return { line: line, ch: index };
      }
      return cur;
    }

    function selectCompanionObject(cm, revSymb, inclusive) {
      var cur = cm.getCursor();