function processLine(lineHandle)
        {
            var text = lineHandle.text;
            if (text.length === 0 || !WebInspector.TextUtils.isSpaceChar(text[0]))
                return;
            if (tabRegex.test(text)) {
                ++tabLines;
                return;
            }
            var i = 0;
            while (i < text.length && WebInspector.TextUtils.isSpaceChar(text[i]))
                ++i;
            if (i % 2 !== 0)
                return;
            indents[i] = 1 + (indents[i] || 0);
        }
@param {number} direction
@param {boolean} shift