Fix center positioning of tab

sandy081 · sandy081 · commit 6d5c3be3d478 · 2016-07-25T16:48:31.000+02:00
diff --git a/src/vs/workbench/browser/parts/editor/editorCommands.ts b/src/vs/workbench/browser/parts/editor/editorCommands.ts
@@ -101,7 +101,7 @@ function _moveActiveTab(args: ActiveEditorMoveArguments, activeEditor: IEditor,
 			index = index + args.value;
 			break;
 		case ActiveEditorMovePositioning.CENTER:
-			index = Math.round(editorGroup.count / 2);
+			index = Math.round(editorGroup.count / 2) - 1;
 			break;
 		case ActiveEditorMovePositioning.POSITION:
 			index = args.value - 1;
