Fix highlighting of class instantiation arguments

reported at https://forum.sublimetext.com/t/coffeescript-syntax-highlighting-failing-in-very-basic-way/73975

Author: deathaxe

CoffeeScript.sublime-syntax

@@ -434,9 +434,22 @@ contexts:
         2: punctuation.accessor.dot.coffee
     - match: '{{identifier}}'
       scope: support.class.coffee
-      pop: 1
+      set: maybe-class-arguments
+    - include: else-pop
+
+  maybe-class-arguments:
+    - match: \(
+      scope: punctuation.section.group.begin.coffee
+      set: class-arguments-body
     - include: else-pop
 
+  class-arguments-body:
+    - meta_scope: meta.group.coffee
+    - match: \)
+      scope: punctuation.section.group.end.coffee
+      pop: 1
+    - include: script
+
 ###[ OPERATORS ]##############################################################
 
   punctuations:

tests/syntax_test_scope.coffee

@@ -284,12 +284,21 @@ class App.Router extends Snakeskin.Router
 #         ^ keyword.operator.assignment.coffee
 #           ^^^ keyword.operator.object.new.coffee
 #               ^^^^^ support.class.coffee
+#                    ^ punctuation.section.group.begin.coffee
+#                     ^ punctuation.section.group.end.coffee
 
-  try: new Class();
+  try: new Class("Unknown sort: #{info.type}");
 # ^^^ variable.other.readwrite.coffee
 #    ^ keyword.operator.assignment.coffee
 #      ^^^ keyword.operator.object.new.coffee
 #          ^^^^^ support.class.coffee
+#               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.group.coffee
+#               ^ punctuation.section.group.begin.coffee
+#                ^^^^^^^^^^^^^^^ meta.string.coffee string.quoted.double.coffee - meta.interpolation
+#                               ^^^^^^^^^^^^ meta.string.coffee meta.embedded.coffee source.coffee.embedded.source
+#                                           ^ meta.string.coffee string.quoted.double.coffee - meta.interpolation
+#                                            ^ punctuation.section.group.end.coffee
+#                                             ^ punctuation.terminator.statement.coffee
 
 ###[ KEYWORDS ]################################################################