sreichel/magento-StackExchange_DisableSearchBySku

<?xml version="1.0" ?>
<config>
    <sections>
        <catalog>
            <groups>
                <frontend>
                    <fields>
                        <disable_search translate="label" module="stackexchange_disablesearchbysku">
                            <label>Disable search by SKU</label>
                            <frontend_type>select</frontend_type>
                            <source_model>adminhtml/system_config_source_enabledisable</source_model>
                            <sort_order>99991</sort_order>
                            <show_in_default>1</show_in_default>
                            <show_in_website>1</show_in_website>
                            <show_in_store>1</show_in_store>
                        </disable_search>
                    </fields>
                </frontend>
            </groups>
        </catalog>
    </sections>
</config>