Support for <optgroup>

[CSergienko]

I find myself needing to use <optgroup> to split an option into two sub options as so:

<select>
        <option value="#option1">Option 1</option>
        <option value="#option2">Option 2</option>
        <option value="#option3">Option 3</option>
        <optgroup label="Option 4">
            <option value="#option4.1">Option 4.1</option>
            <option value="#option4.2">Option 4.2</option>
        </optgroup>
        <option value="#option5">Option 5</option>
        <option value="#option6">Option 6</option>
        <option value="#option7">Option 7</option>
    </select>

Is this possible?

[HemantNegi]

Hi,
Please see : #59