move_column.twig

<select id="field_{{ column_number }}_{{ ci - ci_offset }}"
    name="field_move_to[{{ column_number }}]"
    size="1"
    width="5em">
    <option value="" selected="selected">&nbsp;</option>
    <option value="-first"{{ current_index == 0 ? ' disabled="disabled"' }}>
        {% trans 'first' %}
    </option>
    {% for mi in 0..move_columns|length - 1 %}
        <option value="{{ move_columns[mi].name }}"
            {{- current_index == mi or current_index == mi + 1 ? ' disabled="disabled"' }}>
            {{ 'after %s'|trans|format(Util_backquote(move_columns[mi].name|e)) }}
        </option>
    {% endfor %}
</select>