Fixes #89562

src/vs/workbench/contrib/markers/browser/markersTreeViewer.ts

@@ -48,6 +48,9 @@ import { textLinkForeground } from 'vs/platform/theme/common/colorRegistry';
 import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 import { OS, OperatingSystem } from 'vs/base/common/platform';
 import { IFileService } from 'vs/platform/files/common/files';
+import { domEvent } from 'vs/base/browser/event';
+import { StandardKeyboardEvent } from 'vs/base/browser/keyboardEvent';
+import { KeyCode } from 'vs/base/common/keyCodes';
 
 export type TreeElement = ResourceMarkers | Marker | RelatedInformation;
 
@@ -374,14 +377,21 @@ class MarkerWidget extends Disposable {
 
 					dom.append(parent, this._codeLink);
 					this._codeLink.setAttribute('href', codeLink);
-
-					this._codeLink.onclick = (e) => {
-						e.preventDefault();
-						if ((this._clickModifierKey === 'meta' && e.metaKey) || (this._clickModifierKey === 'ctrl' && e.ctrlKey) || (this._clickModifierKey === 'alt' && e.altKey)) {
-							this._openerService.open(codeUri);
-							e.stopPropagation();
-						}
-					};
+					this._codeLink.tabIndex = 0;
+
+					const onClick = Event.chain(domEvent(this._codeLink, 'click'))
+						.filter(e => ((this._clickModifierKey === 'meta' && e.metaKey) || (this._clickModifierKey === 'ctrl' && e.ctrlKey) || (this._clickModifierKey === 'alt' && e.altKey)))
+						.event;
+					const onEnterPress = Event.chain(domEvent(this._codeLink, 'keydown'))
+						.map(e => new StandardKeyboardEvent(e))
+						.filter(e => e.keyCode === KeyCode.Enter)
+						.event;
+					const onOpen = Event.any<dom.EventLike>(onClick, onEnterPress);
+
+					this._register(onOpen(e => {
+						dom.EventHelper.stop(e, true);
+						this._openerService.open(codeUri);
+					}));
 
 					const code = new HighlightedLabel(dom.append(this._codeLink, dom.$('.marker-code')), false);
 					const codeMatches = filterData && filterData.codeMatches || [];