Allow to pin an editor when saving explicitly (fixes #20466)

src/vs/workbench/parts/files/browser/fileActions.ts

@@ -1330,6 +1330,7 @@ export abstract class BaseSaveFileAction extends BaseActionWithErrorReporting {
 		label: string,
 		@IWorkbenchEditorService private editorService: IWorkbenchEditorService,
 		@ITextFileService private textFileService: ITextFileService,
+		@IEditorGroupService private editorGroupService: IEditorGroupService,
 		@IUntitledEditorService private untitledEditorService: IUntitledEditorService,
 		@IMessageService messageService: IMessageService
 	) {
@@ -1412,6 +1413,14 @@ export abstract class BaseSaveFileAction extends BaseActionWithErrorReporting {
 				});
 			}
 
+			// Pin the active editor if we are saving it
+			if (!this.resource) {
+				const editor = this.editorService.getActiveEditor();
+				if (editor) {
+					this.editorGroupService.pinEditor(editor.position, editor.input);
+				}
+			}
+
 			// Just save
 			return this.textFileService.save(source, { force: true /* force a change to the file to trigger external watchers if any */ });
 		}