Merge from vscode d5e9aa0227e057a60c82568bf31c04730dc15dcd (#11276)

* Merge from vscode d5e9aa0227e057a60c82568bf31c04730dc15dcd

* fix tests

extensions/git/src/api/extension.ts

@@ -7,7 +7,6 @@ import { Model } from '../model';
 import { GitExtension, Repository, API } from './git';
 import { ApiRepository, ApiImpl } from './api1';
 import { Event, EventEmitter } from 'vscode';
-import { latchEvent } from '../util';
 
 export function deprecated(_target: any, key: string, descriptor: any): void {
 	if (typeof descriptor.value !== 'function') {
@@ -26,14 +25,20 @@ export class GitExtensionImpl implements GitExtension {
 	enabled: boolean = false;
 
 	private _onDidChangeEnablement = new EventEmitter<boolean>();
-	readonly onDidChangeEnablement: Event<boolean> = latchEvent(this._onDidChangeEnablement.event);
+	readonly onDidChangeEnablement: Event<boolean> = this._onDidChangeEnablement.event;
 
 	private _model: Model | undefined = undefined;
 
 	set model(model: Model | undefined) {
 		this._model = model;
 
-		this.enabled = !!model;
+		const enabled = !!model;
+
+		if (this.enabled === enabled) {
+			return;
+		}
+
+		this.enabled = enabled;
 		this._onDidChangeEnablement.fire(this.enabled);
 	}
 
@@ -73,4 +78,4 @@ export class GitExtensionImpl implements GitExtension {
 
 		return new ApiImpl(this._model);
 	}
-}
+}

extensions/git/src/main.ts

@@ -176,8 +176,7 @@ export async function activate(context: ExtensionContext): Promise<GitExtension>
 	return result;
 }
 
-// @ts-expect-error
-async function checkGitVersion(info: IGit): Promise<void> {
+async function checkGitv1(info: IGit): Promise<void> {
 	const config = workspace.getConfiguration('git');
 	const shouldIgnore = config.get<boolean>('ignoreLegacyWarning') === true;
 
@@ -204,3 +203,27 @@ async function checkGitVersion(info: IGit): Promise<void> {
 		await config.update('ignoreLegacyWarning', true, true);
 	}
 }
+
+async function checkGitWindows(info: IGit): Promise<void> {
+	if (!/^2\.(25|26)\./.test(info.version)) {
+		return;
+	}
+
+	const update = localize('updateGit', "Update Git");
+	const choice = await window.showWarningMessage(
+		localize('git2526', "There are known issues with the installed Git {0}. Please update to Git >= 2.27 for the git features to work correctly.", info.version),
+		update
+	);
+
+	if (choice === update) {
+		commands.executeCommand('vscode.open', Uri.parse('https://git-scm.com/'));
+	}
+}
+// @ts-expect-error
+async function checkGitVersion(info: IGit): Promise<void> {
+	await checkGitv1(info);
+
+	if (process.platform === 'win32') {
+		await checkGitWindows(info);
+	}
+}

extensions/git/src/repository.ts

@@ -865,7 +865,7 @@ export class Repository implements Disposable {
 	}
 
 	async getInputTemplate(): Promise<string> {
-		const commitMessage = (await Promise.all([this.repository.getMergeMessage(), this.repository.getSquashMessage()])).find(msg => msg !== undefined);
+		const commitMessage = (await Promise.all([this.repository.getMergeMessage(), this.repository.getSquashMessage()])).find(msg => !!msg);
 
 		if (commitMessage) {
 			return commitMessage;

extensions/git/src/util.ts

@@ -44,18 +44,6 @@ export function filterEvent<T>(event: Event<T>, filter: (e: T) => boolean): Even
 	return (listener: (e: T) => any, thisArgs?: any, disposables?: Disposable[]) => event(e => filter(e) && listener.call(thisArgs, e), null, disposables);
 }
 
-export function latchEvent<T>(event: Event<T>): Event<T> {
-	let firstCall = true;
-	let cache: T;
-
-	return filterEvent(event, value => {
-		let shouldEmit = firstCall || value !== cache;
-		firstCall = false;
-		cache = value;
-		return shouldEmit;
-	});
-}
-
 export function anyEvent<T>(...events: Event<T>[]): Event<T> {
 	return (listener: (e: T) => any, thisArgs?: any, disposables?: Disposable[]) => {
 		const result = combinedDisposable(events.map(event => event(i => listener.call(thisArgs, i))));