Remove keepOriginalScroll option

README.md

@@ -101,7 +101,6 @@ var sortable = new Sortable(el, {
 	fallbackTolerance: 0, // Specify in pixels how far the mouse should move before it's considered as a drag.
 
 	scroll: true, // or HTMLElement
-  keepOriginalScroll: false // use only with scrollFn. Also keep the original scroll behavior alongside the scrollFn
 	scrollFn: function(offsetX, offsetY, originalEvent, touchEvt, hoverTargetEl) { ... }, // if you have custom scrollbar scrollFn may be used for autoscrolling
 	scrollSensitivity: 30, // px, how near the mouse must be to an edge to start scrolling.
 	scrollSpeed: 10, // px

Sortable.js

@@ -167,9 +167,8 @@
 							scrollOffsetX = vx ? vx * speed : 0;
 
 							if ('function' === typeof(scrollCustomFn)) {
-                var scrollFnResult = scrollCustomFn.call(_this, scrollOffsetX, scrollOffsetY, evt, touchEvt, el);
-								if (!options.keepOriginalScroll) {
-                  return scrollFnResult;
+								if (scrollCustomFn.call(_this, scrollOffsetX, scrollOffsetY, evt, touchEvt, el) !== 'continue') {
+									return;
 								}
 							}
 
@@ -266,7 +265,6 @@
 			store: null,
 			handle: null,
       scroll: true,
-      keepOriginalScroll: false,
 			scrollSensitivity: 30,
 			scrollSpeed: 10,
 			draggable: /[uo]l/i.test(el.nodeName) ? 'li' : '>*',