Added internal wrapper function.

Author: adelura

core/selection.js

@@ -192,14 +192,18 @@
 		];
 	}
 
+	function setRangeOnSelection( range, selection ) {
+		selection.removeAllRanges();
+		selection.addRange( range );
+	}
+
 	function moveNativeSelectionToBookmark( document, bm ) {
 		var sel = document.getSelection(),
 			range = document.createRange();
 
 		range.setStart( bm[ 0 ].node, bm[ 0 ].offset );
 		range.collapse( true );
-		sel.removeAllRanges();
-		sel.addRange( range );
+		setRangeOnSelection( range, sel );
 		sel.extend( bm[ 1 ].node, bm[ 1 ].offset );
 	}
 
@@ -221,8 +225,7 @@
 			nativeRange.setStart( range.startContainer.$, range.startOffset );
 			nativeRange.collapse( 1 );
 
-			nativeSel.removeAllRanges();
-			nativeSel.addRange( nativeRange );
+			setRangeOnSelection( nativeRange, nativeSel );
 		}
 		else {
 			// IE in specific case may also fire selectionchange.
@@ -1978,8 +1981,7 @@
 					}
 
 					// Select the range.
-					sel.removeAllRanges();
-					sel.addRange( nativeRange );
+					setRangeOnSelection( nativeRange, sel );
 				}
 			}