Consolidates `vscode.diff` calls into a helper

src/commands/diffWith.ts

@@ -7,9 +7,10 @@ import { isCommit } from '../git/models/commit';
 import { deletedOrMissing } from '../git/models/constants';
 import { isShaLike, isUncommitted, shortenRevision } from '../git/models/reference';
 import { showGenericErrorMessage } from '../messages';
-import { command, executeCoreCommand } from '../system/command';
+import { command } from '../system/command';
 import { Logger } from '../system/logger';
 import { basename } from '../system/path';
+import { openDiffEditor } from '../system/utils';
 import { Command } from './base';
 
 export interface DiffWithCommandArgsRevision {
@@ -179,13 +180,12 @@ export class DiffWithCommand extends Command {
 				args.showOptions.selection = new Range(args.line, 0, args.line, 0);
 			}
 
-			void (await executeCoreCommand(
-				'vscode.diff',
+			await openDiffEditor(
 				lhs ?? this.container.git.getRevisionUri(deletedOrMissing, args.lhs.uri.fsPath, args.repoPath),
 				rhs ?? this.container.git.getRevisionUri(deletedOrMissing, args.rhs.uri.fsPath, args.repoPath),
 				title,
 				args.showOptions,
-			));
+			);
 		} catch (ex) {
 			Logger.error(ex, 'DiffWithCommand', 'getVersionedFile');
 			void showGenericErrorMessage('Unable to open compare');

src/commands/openFileFromRemote.ts

@@ -54,7 +54,7 @@ export class OpenFileFromRemoteCommand extends Command {
 		}
 
 		try {
-			await openEditor(local.uri, { selection: selection, rethrow: true });
+			await openEditor(local.uri, { selection: selection, throwOnError: true });
 		} catch {
 			const uris = await window.showOpenDialog({
 				title: 'Open local file',

src/system/utils.ts

@@ -125,9 +125,13 @@ export function isTextEditor(editor: TextEditor): boolean {
 
 export async function openEditor(
 	uri: Uri,
-	options: TextDocumentShowOptions & { rethrow?: boolean } = {},
+	options?: TextDocumentShowOptions & { throwOnError?: boolean },
 ): Promise<TextEditor | undefined> {
-	const { rethrow, ...opts } = options;
+	let throwOnError;
+	if (options != null) {
+		({ throwOnError, ...options } = options);
+	}
+
 	try {
 		if (isGitUri(uri)) {
 			uri = uri.documentUri();
@@ -144,7 +148,7 @@ export async function openEditor(
 			preserveFocus: false,
 			preview: true,
 			viewColumn: ViewColumn.Active,
-			...opts,
+			...options,
 		});
 	} catch (ex) {
 		const msg: string = ex?.toString() ?? '';
@@ -154,13 +158,26 @@ export async function openEditor(
 			return undefined;
 		}
 
-		if (rethrow) throw ex;
+		if (throwOnError) throw ex;
 
 		Logger.error(ex, 'openEditor');
 		return undefined;
 	}
 }
 
+export async function openDiffEditor(
+	lhs: Uri,
+	rhs: Uri,
+	title: string,
+	options?: TextDocumentShowOptions,
+): Promise<void> {
+	try {
+		await executeCoreCommand('vscode.diff', lhs, rhs, title, options);
+	} catch (ex) {
+		Logger.error(ex, 'openDiffEditor');
+	}
+}
+
 export async function openWalkthrough(
 	extensionId: string,
 	walkthroughId: string,