diff --git a/extensions/csharp/cgmanifest.json b/extensions/csharp/cgmanifest.json
index 0b192d30ec4..6156bbb5082 100644
--- a/extensions/csharp/cgmanifest.json
+++ b/extensions/csharp/cgmanifest.json
@@ -6,7 +6,7 @@
 				"git": {
 					"name": "dotnet/csharp-tmLanguage",
 					"repositoryUrl": "https://github.com/dotnet/csharp-tmLanguage",
-					"commitHash": "4d14854c9bfc9d84cce625d2bfebaac9741b9db8"
+					"commitHash": "572697a2c2267430010b3534281f73337144e94f"
 				}
 			},
 			"license": "MIT",
diff --git a/extensions/csharp/syntaxes/csharp.tmLanguage.json b/extensions/csharp/syntaxes/csharp.tmLanguage.json
index f67a94ba101..8e26aaefa77 100644
--- a/extensions/csharp/syntaxes/csharp.tmLanguage.json
+++ b/extensions/csharp/syntaxes/csharp.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/dotnet/csharp-tmLanguage/commit/4d14854c9bfc9d84cce625d2bfebaac9741b9db8",
+	"version": "https://github.com/dotnet/csharp-tmLanguage/commit/572697a2c2267430010b3534281f73337144e94f",
 	"name": "C#",
 	"scopeName": "source.cs",
 	"patterns": [
@@ -286,9 +286,6 @@
 				{
 					"include": "#this-or-base-expression"
 				},
-				{
-					"include": "#switch-expression"
-				},
 				{
 					"include": "#conditional-operator"
 				},
@@ -619,7 +616,7 @@
 			]
 		},
 		"delegate-declaration": {
-			"begin": "(?x)\n(?:\\b(delegate)\\b)\\s+\n(?<type_name>\n  (?:\n    (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s+\n(\\g<identifier>)\\s*\n(<([^<>]+)>)?\\s*\n(?=\\()",
+			"begin": "(?x)\n(?:\\b(delegate)\\b)\\s+\n(?<type-name>\n  (?:\n    (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s+\n(\\g<identifier>)\\s*\n(<([^<>]+)>)?\\s*\n(?=\\()",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.other.delegate.cs"
@@ -970,7 +967,7 @@
 			]
 		},
 		"field-declaration": {
-			"begin": "(?x)\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s+\n(\\g<identifier>)\\s* # first field name\n(?!=>|==)(?=,|;|=|$)",
+			"begin": "(?x)\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s+\n(\\g<identifier>)\\s* # first field name\n(?!=>|==)(?=,|;|=|$)",
 			"beginCaptures": {
 				"1": {
 					"patterns": [
@@ -1004,7 +1001,7 @@
 			]
 		},
 		"property-declaration": {
-			"begin": "(?x)\n\n# The negative lookahead below ensures that we don't match nested types\n# or other declarations as properties.\n(?![[:word:][:space:]]*\\b(?:class|interface|struct|enum|event)\\b)\n\n(?<return_type>\n  (?<type_name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\\s+\n)\n(?<interface_name>\\g<type_name>\\s*\\.\\s*)?\n(?<property_name>\\g<identifier>)\\s*\n(?=\\{|=>|$)",
+			"begin": "(?x)\n\n# The negative lookahead below ensures that we don't match nested types\n# or other declarations as properties.\n(?![[:word:][:space:]]*\\b(?:class|interface|struct|enum|event)\\b)\n\n(?<return-type>\n  (?<type-name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\\s+\n)\n(?<interface-name>\\g<type-name>\\s*\\.\\s*)?\n(?<property-name>\\g<identifier>)\\s*\n(?=\\{|=>|$)",
 			"beginCaptures": {
 				"1": {
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@@ -1047,7 +1044,7 @@
 			]
 		},
 		"indexer-declaration": {
-			"begin": "(?x)\n(?<return_type>\n  (?<type_name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\\s+\n)\n(?<interface_name>\\g<type_name>\\s*\\.\\s*)?\n(?<indexer_name>this)\\s*\n(?=\\[)",
+			"begin": "(?x)\n(?<return-type>\n  (?<type-name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\\s+\n)\n(?<interface-name>\\g<type-name>\\s*\\.\\s*)?\n(?<indexer-name>this)\\s*\n(?=\\[)",
 			"beginCaptures": {
 				"1": {
 					"patterns": [
@@ -1090,7 +1087,7 @@
 			]
 		},
 		"event-declaration": {
-			"begin": "(?x)\n\\b(event)\\b\\s*\n(?<return_type>\n  (?<type_name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\\s+\n)\n(?<interface_name>\\g<type_name>\\s*\\.\\s*)?\n(?<event_names>\\g<identifier>(?:\\s*,\\s*\\g<identifier>)*)\\s*\n(?=\\{|;|$)",
+			"begin": "(?x)\n\\b(event)\\b\\s*\n(?<return-type>\n  (?<type-name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\\s+\n)\n(?<interface-name>\\g<type-name>\\s*\\.\\s*)?\n(?<event-names>\\g<identifier>(?:\\s*,\\s*\\g<identifier>)*)\\s*\n(?=\\{|;|$)",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.other.event.cs"
@@ -1220,7 +1217,7 @@
 			]
 		},
 		"method-declaration": {
-			"begin": "(?x)\n(?<return_type>\n  (?<type_name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\\s+\n)\n(?<interface_name>\\g<type_name>\\s*\\.\\s*)?\n(\\g<identifier>)\\s*\n(<([^<>]+)>)?\\s*\n(?=\\()",
+			"begin": "(?x)\n(?<return-type>\n  (?<type-name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\\s+\n)\n(?<interface-name>\\g<type-name>\\s*\\.\\s*)?\n(\\g<identifier>)\\s*\n(<([^<>]+)>)?\\s*\n(?=\\()",
 			"beginCaptures": {
 				"1": {
 					"patterns": [
@@ -1356,7 +1353,7 @@
 			]
 		},
 		"operator-declaration": {
-			"begin": "(?x)\n(?<type_name>\n  (?:\n    (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s*\n(?<operator_keyword>(?:\\b(?:operator)))\\s*\n(?<operator>(?:\\+|-|\\*|/|%|&|\\||\\^|\\<\\<|\\>\\>|==|!=|\\>|\\<|\\>=|\\<=|!|~|\\+\\+|--|true|false))\\s*\n(?=\\()",
+			"begin": "(?x)\n(?<type-name>\n  (?:\n    (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s*\n(?<operator-keyword>(?:\\b(?:operator)))\\s*\n(?<operator>(?:\\+|-|\\*|/|%|&|\\||\\^|\\<\\<|\\>\\>|==|!=|\\>|\\<|\\>=|\\<=|!|~|\\+\\+|--|true|false))\\s*\n(?=\\()",
 			"beginCaptures": {
 				"1": {
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@@ -1389,7 +1386,7 @@
 			]
 		},
 		"conversion-operator-declaration": {
-			"begin": "(?x)\n(?<explicit_or_implicit_keyword>(?:\\b(?:explicit|implicit)))\\s*\n(?<operator_keyword>(?:\\b(?:operator)))\\s*\n(?<type_name>\n  (?:\n    (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s*\n(?=\\()",
+			"begin": "(?x)\n(?<explicit-or-implicit-keyword>(?:\\b(?:explicit|implicit)))\\s*\n(?<operator-keyword>(?:\\b(?:operator)))\\s*\n(?<type-name>\n  (?:\n    (?:ref\\s+(?:readonly\\s+)?)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s*\n(?=\\()",
 			"beginCaptures": {
 				"1": {
 					"patterns": [
@@ -1618,7 +1615,7 @@
 			"end": "(?=;)",
 			"patterns": [
 				{
-					"include": "#statement"
+					"include": "#expression"
 				}
 			]
 		},
@@ -1721,178 +1718,6 @@
 				}
 			]
 		},
-		"switch-expression": {
-			"begin": "(?x) (?<!\\.)\\b(switch)",
-			"beginCaptures": {
-				"1": {
-					"name": "keyword.control.switch.cs"
-				}
-			},
-			"end": "(?<=\\})",
-			"endCaptures": {
-				"0": {
-					"name": "punctuation.curlybrace.close.cs"
-				}
-			},
-			"patterns": [
-				{
-					"begin": "\\{",
-					"beginCaptures": {
-						"0": {
-							"name": "punctuation.curlybrace.open.cs"
-						}
-					},
-					"end": "\\}",
-					"endCaptures": {
-						"0": {
-							"name": "punctuation.curlybrace.close.cs"
-						}
-					},
-					"patterns": [
-						{
-							"include": "#comment"
-						},
-						{
-							"include": "#literal"
-						},
-						{
-							"include": "#switch-var-pattern"
-						},
-						{
-							"include": "#switch-property-expression"
-						},
-						{
-							"include": "#member-access-expression"
-						},
-						{
-							"include": "#switch-pattern"
-						},
-						{
-							"include": "#expression-body"
-						},
-						{
-							"include": "#punctuation-comma"
-						}
-					]
-				}
-			]
-		},
-		"switch-pattern": {
-			"begin": "(?x) # e.g. int x OR var x\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s+\n(\\g<identifier>)\\b\\s*",
-			"beginCaptures": {
-				"1": {
-					"patterns": [
-						{
-							"include": "#type"
-						}
-					]
-				},
-				"2": {
-					"name": "entity.name.variable.local.cs"
-				}
-			},
-			"end": "(?==>)",
-			"patterns": [
-				{
-					"include": "#comment"
-				},
-				{
-					"include": "#switch-when-clause"
-				}
-			]
-		},
-		"switch-property-expression": {
-			"begin": "(?x) # e.g. int x OR var x\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)?\\s*\n(\\{)",
-			"beginCaptures": {
-				"1": {
-					"patterns": [
-						{
-							"include": "#type"
-						}
-					]
-				},
-				"6": {
-					"name": "punctuation.curlybrace.open.cs"
-				}
-			},
-			"end": "\\}",
-			"endCaptures": {
-				"0": {
-					"name": "punctuation.curlybrace.close.cs"
-				}
-			},
-			"patterns": [
-				{
-					"include": "#expression"
-				},
-				{
-					"include": "#punctuation-comma"
-				}
-			]
-		},
-		"switch-var-pattern": {
-			"begin": "(?x) # match foreach (var (x, y) in ...)\n(?:\\b(var)\\b\\s*)\n(?<tuple>\\((?:[^\\(\\)]|\\g<tuple>)+\\))\\s*",
-			"beginCaptures": {
-				"1": {
-					"name": "keyword.other.var.cs"
-				},
-				"2": {
-					"patterns": [
-						{
-							"include": "#tuple-declaration-deconstruction-element-list"
-						}
-					]
-				}
-			},
-			"end": "(?==>)",
-			"patterns": [
-				{
-					"include": "#comment"
-				},
-				{
-					"include": "#switch-when-clause"
-				}
-			]
-		},
-		"switch-when-clause": {
-			"begin": "(?<!\\.)\\b(when)\\b\\s*(\\()?",
-			"beginCaptures": {
-				"1": {
-					"name": "keyword.control.try.when.cs"
-				},
-				"2": {
-					"name": "punctuation.parenthesis.open.cs"
-				}
-			},
-			"end": "(?==>)",
-			"patterns": [
-				{
-					"include": "#comment"
-				},
-				{
-					"include": "#expression"
-				},
-				{
-					"include": "#punctuation-comma"
-				},
-				{
-					"match": "\\(",
-					"captures": {
-						"0": {
-							"name": "punctuation.parenthesis.open.cs"
-						}
-					}
-				},
-				{
-					"match": "\\)",
-					"captures": {
-						"0": {
-							"name": "punctuation.parenthesis.close.cs"
-						}
-					}
-				}
-			]
-		},
 		"switch-label": {
 			"patterns": [
 				{
@@ -2040,7 +1865,7 @@
 					},
 					"patterns": [
 						{
-							"match": "(?x)\n(?:\n  (\\bvar\\b)|\n  (?<type_name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\n)\\s+\n(\\g<identifier>)\\s+\n\\b(in)\\b",
+							"match": "(?x)\n(?:\n  (\\bvar\\b)|\n  (?<type-name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\n)\\s+\n(\\g<identifier>)\\s+\n\\b(in)\\b",
 							"captures": {
 								"1": {
 									"name": "keyword.other.var.cs"
@@ -2159,7 +1984,7 @@
 					},
 					"patterns": [
 						{
-							"match": "(?x)\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s*\n(?:(\\g<identifier>)\\b)?",
+							"match": "(?x)\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s*\n(?:(\\g<identifier>)\\b)?",
 							"captures": {
 								"1": {
 									"patterns": [
@@ -2319,37 +2144,31 @@
 				{
 					"include": "#local-variable-declaration"
 				},
-				{
-					"include": "#local-function-declaration"
-				},
 				{
 					"include": "#local-tuple-var-deconstruction"
 				}
 			]
 		},
 		"local-variable-declaration": {
-			"begin": "(?x)\n(?:\n  (?:(\\busing)\\s+)?\n  (?:(\\bref)\\s+(?:(\\breadonly)\\s+)?)?(\\bvar\\b)| # ref local\n  (?<type_name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref local\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\n)\\s+\n(\\g<identifier>)\\s*\n(?!=>)\n(?=,|;|=|\\))",
+			"begin": "(?x)\n(?:\n  (?:(\\bref)\\s+(?:(\\breadonly)\\s+)?)?(\\bvar\\b)| # ref local\n  (?<type-name>\n    (?:\n      (?:ref\\s+(?:readonly\\s+)?)?   # ref local\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\n)\\s+\n(\\g<identifier>)\\s*\n(?!=>)\n(?=,|;|=|\\))",
 			"beginCaptures": {
 				"1": {
-					"name": "keyword.other.using.cs"
+					"name": "storage.modifier.cs"
 				},
 				"2": {
 					"name": "storage.modifier.cs"
 				},
 				"3": {
-					"name": "storage.modifier.cs"
-				},
-				"4": {
 					"name": "keyword.other.var.cs"
 				},
-				"5": {
+				"4": {
 					"patterns": [
 						{
 							"include": "#type"
 						}
 					]
 				},
-				"10": {
+				"9": {
 					"name": "entity.name.variable.local.cs"
 				}
 			},
@@ -2371,7 +2190,7 @@
 			]
 		},
 		"local-constant-declaration": {
-			"begin": "(?x)\n(?<const_keyword>\\b(?:const)\\b)\\s*\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s+\n(\\g<identifier>)\\s*\n(?=,|;|=)",
+			"begin": "(?x)\n(?<const-keyword>\\b(?:const)\\b)\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s+\n(\\g<identifier>)\\s*\n(?=,|;|=)",
 			"beginCaptures": {
 				"1": {
 					"name": "storage.modifier.cs"
@@ -2404,13 +2223,6 @@
 				}
 			]
 		},
-		"local-function-declaration": {
-			"patterns": [
-				{
-					"include": "#method-declaration"
-				}
-			]
-		},
 		"local-tuple-var-deconstruction": {
 			"begin": "(?x) # e.g. var (x, y) = GetPoint();\n(?:\\b(var)\\b\\s*)\n(?<tuple>\\((?:[^\\(\\)]|\\g<tuple>)+\\))\\s*\n(?=;|=|\\))",
 			"beginCaptures": {
@@ -2520,7 +2332,7 @@
 			]
 		},
 		"declaration-expression-local": {
-			"match": "(?x) # e.g. int x OR var x\n(?:\n  \\b(var)\\b|\n  (?<type_name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s* # array suffix?\n        \\[\n          (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n        \\]\n        \\s*\n        (?:\\?)? # arrays can be nullable reference types\n        \\s*\n      )*\n    )\n  )\n)\\s+\n(\\g<identifier>)\\b\\s*\n(?=[,)\\]])",
+			"match": "(?x) # e.g. int x OR var x\n(?:\n  \\b(var)\\b|\n  (?<type-name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\n)\\s+\n(\\g<identifier>)\\b\\s*\n(?=[,)\\]])",
 			"captures": {
 				"1": {
 					"name": "keyword.other.var.cs"
@@ -2538,7 +2350,7 @@
 			}
 		},
 		"declaration-expression-tuple": {
-			"match": "(?x) # e.g. int x OR var x\n(?:\n  \\b(var)\\b|\n  (?<type_name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name_and_type_args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n                (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n    )\n  )\n)\\s+\n(\\g<identifier>)\\b\\s*\n(?=[,)])",
+			"match": "(?x) # e.g. int x OR var x\n(?:\n  \\b(var)\\b|\n  (?<type-name>\n    (?:\n      (?:\n        (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n        (?<name-and-type-args> # identifier + type arguments (if any)\n          \\g<identifier>\\s*\n          (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n        )\n        (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n        (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n      )\n      (?:\\s*\\?\\s*)? # nullable suffix?\n      (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n    )\n  )\n)\\s+\n(\\g<identifier>)\\b\\s*\n(?=[,)])",
 			"captures": {
 				"1": {
 					"name": "keyword.other.var.cs"
@@ -2663,7 +2475,7 @@
 		},
 		"verbatim-interpolated-string": {
 			"name": "string.quoted.double.cs",
-			"begin": "(?:\\$@|@\\$)\"",
+			"begin": "\\$@\"",
 			"beginCaptures": {
 				"0": {
 					"name": "punctuation.definition.string.begin.cs"
@@ -2900,7 +2712,7 @@
 			"patterns": [
 				{
 					"name": "keyword.operator.assignment.compound.cs",
-					"match": "\\*=|/=|%=|\\+=|-=|\\?\\?="
+					"match": "\\*=|/=|%=|\\+=|-="
 				},
 				{
 					"name": "keyword.operator.assignment.compound.bitwise.cs",
@@ -2948,26 +2760,6 @@
 				}
 			]
 		},
-		"switch-literal": {
-			"name": "constant.language.null.cs",
-			"match": "(?<!\\.)\\bnull\\b",
-			"beginCaptures": {
-				"1": {
-					"name": "constant.language.null.cs"
-				}
-			},
-			"patterns": [
-				{
-					"include": "#comment"
-				},
-				{
-					"include": "#punctuation-comma"
-				},
-				{
-					"include": "#expression-body"
-				}
-			]
-		},
 		"conditional-operator": {
 			"begin": "(?<!\\?)\\?(?!\\?|\\.|\\[)",
 			"beginCaptures": {
@@ -3037,7 +2829,7 @@
 			"match": "@?[_[:alpha:]][_[:alnum:]]*"
 		},
 		"cast-expression": {
-			"match": "(?x)\n(\\()\\s*\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s*\n(\\))(?=\\s*@?[_[:alnum:]\\(])",
+			"match": "(?x)\n(\\()\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s*\n(\\))(?=\\s*@?[_[:alnum:]\\(])",
 			"captures": {
 				"1": {
 					"name": "punctuation.parenthesis.open.cs"
@@ -3055,7 +2847,7 @@
 			}
 		},
 		"as-expression": {
-			"match": "(?x)\n(?<!\\.)\\b(as)\\b\\s*\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)?",
+			"match": "(?x)\n(?<!\\.)\\b(as)\\b\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)?",
 			"captures": {
 				"1": {
 					"name": "keyword.other.as.cs"
@@ -3070,7 +2862,7 @@
 			}
 		},
 		"is-expression": {
-			"match": "(?x)\n(?<!\\.)\\b(is)\\b\\s*\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)?",
+			"match": "(?x)\n(?<!\\.)\\b(is)\\b\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)?",
 			"captures": {
 				"1": {
 					"name": "keyword.other.is.cs"
@@ -3096,7 +2888,7 @@
 			}
 		},
 		"invocation-expression": {
-			"begin": "(?x)\n(?:(\\?)\\s*)?                                     # preceding null-conditional operator?\n(?:(\\.)\\s*)?                                     # preceding dot?\n(@?[_[:alpha:]][_[:alnum:]]*)\\s*                   # method name\n(?<type_args>\\s*<([^<>]|\\g<type_args>)+>\\s*)?\\s* # type arguments\n(?=\\()                                           # open paren of argument list",
+			"begin": "(?x)\n(?:(\\?)\\s*)?                                     # preceding null-conditional operator?\n(?:(\\.)\\s*)?                                     # preceding dot?\n(@?[_[:alpha:]][_[:alnum:]]*)\\s*                   # method name\n(?<type-args>\\s*<([^<>]|\\g<type-args>)+>\\s*)?\\s* # type arguments\n(?=\\()                                           # open paren of argument list",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.operator.null-conditional.cs"
@@ -3162,7 +2954,7 @@
 					}
 				},
 				{
-					"match": "(?x)\n(\\.)?\\s*\n(@?[_[:alpha:]][_[:alnum:]]*)\n(?<type_params>\\s*<([^<>]|\\g<type_params>)+>\\s*)\n(?=\n  (\\s*\\?)?\n  \\s*\\.\\s*@?[_[:alpha:]][_[:alnum:]]*\n)",
+					"match": "(?x)\n(\\.)?\\s*\n(@?[_[:alpha:]][_[:alnum:]]*)\n(?<type-params>\\s*<([^<>]|\\g<type-params>)+>\\s*)\n(?=\n  (\\s*\\?)?\n  \\s*\\.\\s*@?[_[:alpha:]][_[:alnum:]]*\n)",
 					"captures": {
 						"1": {
 							"name": "punctuation.accessor.cs"
@@ -3200,7 +2992,7 @@
 			]
 		},
 		"object-creation-expression-with-parameters": {
-			"begin": "(?x)\n(new)\\s+\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s*\n(?=\\()",
+			"begin": "(?x)\n(new)\\s+\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s*\n(?=\\()",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.other.new.cs"
@@ -3221,7 +3013,7 @@
 			]
 		},
 		"object-creation-expression-with-no-parameters": {
-			"match": "(?x)\n(new)\\s+\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s*\n(?=\\{|$)",
+			"match": "(?x)\n(new)\\s+\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s*\n(?=\\{|$)",
 			"captures": {
 				"1": {
 					"name": "keyword.other.new.cs"
@@ -3236,7 +3028,7 @@
 			}
 		},
 		"array-creation-expression": {
-			"begin": "(?x)\n\\b(new|stackalloc)\\b\\s*\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)?\\s*\n(?=\\[)",
+			"begin": "(?x)\n\\b(new|stackalloc)\\b\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)?\\s*\n(?=\\[)",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.other.new.cs"
@@ -3339,7 +3131,7 @@
 			]
 		},
 		"parameter": {
-			"match": "(?x)\n(?:(?:\\b(ref|params|out|in|this)\\b)\\s+)?\n(?<type_name>\n  (?:\n    (?:ref\\s+)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)\\s+\n(\\g<identifier>)",
+			"match": "(?x)\n(?:(?:\\b(ref|params|out|in|this)\\b)\\s+)?\n(?<type-name>\n  (?:\n    (?:ref\\s+)?   # ref return\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s+\n(\\g<identifier>)",
 			"captures": {
 				"1": {
 					"name": "storage.modifier.cs"
@@ -3438,7 +3230,7 @@
 			]
 		},
 		"query-expression": {
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+			"begin": "(?x)\n\\b(from)\\b\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)?\n\\s+(\\g<identifier>)\\b\\s*\n\\b(in)\\b\\s*",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.query.from.cs"
@@ -3530,7 +3322,7 @@
 			]
 		},
 		"join-clause": {
-			"begin": "(?x)\n\\b(join)\\b\\s*\n(?<type_name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name_and_type_args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type_args>\\s*<(?:[^<>]|\\g<type_args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name_and_type_args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s* # array suffix?\n      \\[\n        (?:\\s*,\\s*)* # commata for multi-dimensional arrays\n      \\]\n      \\s*\n      (?:\\?)? # arrays can be nullable reference types\n      \\s*\n    )*\n  )\n)?\n\\s+(\\g<identifier>)\\b\\s*\n\\b(in)\\b\\s*",
+			"begin": "(?x)\n\\b(join)\\b\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)?\n\\s+(\\g<identifier>)\\b\\s*\n\\b(in)\\b\\s*",
 			"beginCaptures": {
 				"1": {
 					"name": "keyword.query.join.cs"
@@ -3800,7 +3592,7 @@
 			]
 		},
 		"lambda-parameter": {
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+			"match": "(?x)\n(?:\\b(ref|out|in)\\b)?\\s*\n(?:(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s+)?\n(\\g<identifier>)\\b\\s*\n(?=[,)])",
 			"captures": {
 				"1": {
 					"name": "storage.modifier.cs"
@@ -3880,7 +3672,7 @@
 			]
 		},
 		"tuple-element": {
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+			"match": "(?x)\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\n(?:(?<tuple-name>\\g<identifier>)\\b)?",
 			"captures": {
 				"1": {
 					"patterns": [