[glob] {**/package.json,**/project.json} matches too much (fixes #9917)

src/vs/base/common/glob.ts

@@ -207,14 +207,14 @@ function parseRegExp(pattern: string): string {
 }
 
 // regexes to check for trival glob patterns that just check for String#endsWith
-const T1 = /^\*\*\/\*\.[\w\.-]+$/; 						   // **/*.something
-const T2 = /^\*\*\/[\w\.-]+$/; 							   // **/something
-const T3 = /^{\*\*\/\*\.[\w\.-]+(,\*\*\/\*\.[\w\.-]+)*}$/; // {**/*.something,**/*.else}
+const T1 = /^\*\*\/\*\.[\w\.-]+$/; 						   			// **/*.something
+const T2 = /^\*\*\/[\w\.-]+$/; 							   			// **/something
+const T3 = /^{\*\*\/[\*\.]?[\w\.-]+(,\*\*\/[\*\.]?[\w\.-]+)*}$/; 	// {**/*.something,**/*.else} or {**/package.json,**/project.json}
 
 enum Trivia {
 	T1, // **/*.something
 	T2, // **/something
-	T3  // {**/*.something,**/*.else}
+	T3, // {**/*.something,**/*.else} or {**/package.json,**/project.json}
 }
 
 interface IParsedPattern {

src/vs/base/test/common/glob.test.ts

@@ -291,6 +291,12 @@ suite('Glob', () => {
 		assert(!glob.match(p, 'some/test/tempting'));
 		assert(!glob.match(p, 'some\\test\\tempting'));
 		assert(!glob.match(p, 'C:\\\\some\\test\\tempting'));
+
+		p = '{**/package.json,**/project.json}';
+		assert(glob.match(p, 'package.json'));
+		assert(glob.match(p, '/package.json'));
+		assert(!glob.match(p, 'xpackage.json'));
+		assert(!glob.match(p, '/xpackage.json'));
 	});
 
 	test('brace expansion', function () {