Update grammars

extensions/dart/cgmanifest.json

@@ -6,7 +6,7 @@
 				"git": {
 					"name": "dart-lang/dart-syntax-highlight",
 					"repositoryUrl": "https://github.com/dart-lang/dart-syntax-highlight",
-					"commitHash": "e0055eb2f95dd206689f5b1527dadb7bebbfae3d"
+					"commitHash": "0aaacde81aa9a12cfed8ca4ab619be5d9e9ed00a"
 				}
 			},
 			"licenseDetail": [

extensions/dart/syntaxes/dart.tmLanguage.json

@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/dart-lang/dart-syntax-highlight/commit/e0055eb2f95dd206689f5b1527dadb7bebbfae3d",
+	"version": "https://github.com/dart-lang/dart-syntax-highlight/commit/0aaacde81aa9a12cfed8ca4ab619be5d9e9ed00a",
 	"name": "Dart",
 	"scopeName": "source.dart",
 	"patterns": [
@@ -323,16 +323,31 @@
 		"string-interp": {
 			"patterns": [
 				{
-					"match": "\\$(([a-zA-Z0-9_]+)|\\{([^{}]+)\\})",
+					"match": "\\$([a-zA-Z0-9_]+)",
 					"captures": {
-						"2": {
-							"name": "variable.parameter.dart"
-						},
-						"3": {
+						"1": {
 							"name": "variable.parameter.dart"
 						}
 					}
 				},
+				{
+					"name": "string.interpolated.expression.dart",
+					"begin": "\\$\\{",
+					"end": "\\}",
+					"patterns": [
+						{
+							"include": "#constants-and-special-vars",
+							"name": "variable.parameter.dart"
+						},
+						{
+							"include": "#strings"
+						},
+						{
+							"name": "variable.parameter.dart",
+							"match": "[a-zA-Z0-9_]+"
+						}
+					]
+				},
 				{
 					"name": "constant.character.escape.dart",
 					"match": "\\\\."