breakopints and open editors open to the side on alt key

src/vs/workbench/parts/debug/electron-browser/breakpointsView.ts

@@ -95,7 +95,7 @@ export class BreakpointsView extends ViewsViewletPanel {
 		this.disposables.push(this.list.onKeyUp(e => {
 			const event = new StandardKeyboardEvent(e);
 			if (event.equals(KeyCode.Enter)) {
-				handleBreakpointFocus(false, event && (event.ctrlKey || event.metaKey), false);
+				handleBreakpointFocus(false, event && (event.ctrlKey || event.metaKey || event.altKey), false);
 			}
 		}));
 		this.disposables.push(this.list.onMouseDblClick(e => {

src/vs/workbench/parts/files/electron-browser/views/openEditorsView.ts

@@ -185,7 +185,7 @@ export class OpenEditorsView extends ViewsViewletPanel {
 				const focused = this.list.getFocusedElements();
 				const element = focused.length ? focused[0] : undefined;
 				if (element instanceof OpenEditor) {
-					this.openEditor(element, { pinned: false, sideBySide: !!event.ctrlKey, preserveFocus: false });
+					this.openEditor(element, { pinned: false, sideBySide: !!event.altKey, preserveFocus: false });
 				}
 			}
 		}));
@@ -270,7 +270,7 @@ export class OpenEditorsView extends ViewsViewletPanel {
 			const position = this.model.positionOfGroup(element.editorGroup);
 			this.editorService.closeEditor(position, element.editorInput).done(null, errors.onUnexpectedError);
 		} else {
-			this.openEditor(element, { preserveFocus: !isDoubleClick, pinned: isDoubleClick, sideBySide: event.browserEvent.ctrlKey || event.browserEvent.metaKey });
+			this.openEditor(element, { preserveFocus: !isDoubleClick, pinned: isDoubleClick, sideBySide: event.browserEvent.altKey });
 		}
 	}