Note: After saving, you have to bypass your browser's cache to see the changes. Internet Explorer: press Ctrl-F5, Mozilla: hold down Shift while clicking Reload (or press Ctrl-Shift-R), Opera/Konqueror: press F5, Safari: hold down Shift + Alt while clicking Reload, Chrome: hold down Shift while clicking Reload.
/*// Force summary// See https://en.wikipedia.org/wiki/Wikipedia:WikiProject_User_scripts/Scripts/Force_edit_summary*/functionaddForceSummary(){if(!/&action=edit/.test(window.location.href)&&!/&action=submit/.test(window.location.href))return;if(/§ion=new/.test(window.location.href))return;if(!document.forms.editform)return;document.forms.editform.wpSave.onclick=forceSummary;// The second invocation of this will cause extra annoyance if there is no edit summary present. If there *is* an edit summary, the dialog box will not appear.document.forms.editform.wpSave.onfocus=forceSummary;}functionforceSummary(){if(!document.forms.editform.wpSummary.value.replace(/^(?:\/\\*.*\\*\/)? *(.*) *$/,'$1')){varr=prompt('Are you sure you want to submit without adding a summary?\nTo add a summary, type it in the box below:',document.forms.editform.wpSummary.value);if(r==null){returnfalse;}document.forms.editform.wpSummary.value=r;}returntrue;}$(addForceSummary);/*// Force preview, too// https://en.wikipedia.org/wiki/User:X!/forcepreview.js*/functionforcePreview(){if(mw.config.get('wgAction')=="edit"){document.getElementById("wpSave").disabled=true;document.getElementById("wpSave").value="Save (preview first)";document.getElementById("wpSave").style.fontWeight="normal";document.getElementById("wpPreview").style.fontWeight="bold";}}$(forcePreview);