Tokenize '?' as 'keyword.operator.nullable-type.php' in nullable types in comments.

Author: BladeMF

grammars/php.cson

@@ -2499,6 +2499,10 @@
     'captures':
       '0':
         'patterns': [
+          {
+            'match': '\\?'
+            'name': 'keyword.operator.nullable-type.php'
+          }
           {
             'match': '''(?x)\\b
               (string|integer|int|boolean|bool|float|double|object|mixed

spec/php-spec.coffee

@@ -2569,7 +2569,7 @@ describe 'PHP grammar', ->
 
         expect(lines[1][1]).toEqual value: '@param', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'keyword.other.phpdoc.php']
         expect(lines[1][2]).toEqual value: ' ', scopes: ['source.php', 'comment.block.documentation.phpdoc.php']
-        expect(lines[1][3]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php']
+        expect(lines[1][3]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'keyword.operator.nullable-type.php']
         expect(lines[1][4]).toEqual value: 'int', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'keyword.other.type.php']
         expect(lines[1][5]).toEqual value: ' description', scopes: ['source.php', 'comment.block.documentation.phpdoc.php']
 
@@ -2580,7 +2580,7 @@ describe 'PHP grammar', ->
 
         expect(lines[1][1]).toEqual value: '@param', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'keyword.other.phpdoc.php']
         expect(lines[1][2]).toEqual value: ' ', scopes: ['source.php', 'comment.block.documentation.phpdoc.php']
-        expect(lines[1][3]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php']
+        expect(lines[1][3]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'keyword.operator.nullable-type.php']
         expect(lines[1][4]).toEqual value: 'Test', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'support.class.php']
         expect(lines[1][5]).toEqual value: ' description', scopes: ['source.php', 'comment.block.documentation.phpdoc.php']
 
@@ -2619,10 +2619,10 @@ describe 'PHP grammar', ->
 
         expect(lines[1][1]).toEqual value: '@param', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'keyword.other.phpdoc.php']
         expect(lines[1][2]).toEqual value: ' ', scopes: ['source.php', 'comment.block.documentation.phpdoc.php']
-        expect(lines[1][3]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php']
+        expect(lines[1][3]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'keyword.operator.nullable-type.php']
         expect(lines[1][4]).toEqual value: 'int', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'keyword.other.type.php']
         expect(lines[1][5]).toEqual value: '|', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'punctuation.separator.delimiter.php']
-        expect(lines[1][6]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php']
+        expect(lines[1][6]).toEqual value: '?', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'keyword.operator.nullable-type.php']
         expect(lines[1][7]).toEqual value: 'Class', scopes: ['source.php', 'comment.block.documentation.phpdoc.php', 'meta.other.type.phpdoc.php', 'support.class.php']
         expect(lines[1][8]).toEqual value: ' description', scopes: ['source.php', 'comment.block.documentation.phpdoc.php']