Highlight __signature__

Author: 1st1

grammars/MagicPython.cson

@@ -1628,8 +1628,8 @@ repository:
         (\\.)?\\b(
           __(?:
             all | bases | class | code | debug | dict | doc | file | members
-            | metaclass | methods | module | mro | name | qualname | slots
-            | subclasses | version | weakref | wrapped
+            | metaclass | methods | module | mro | name | qualname | signature
+            | slots | subclasses | version | weakref | wrapped
           )__
         )\\b
       

grammars/MagicPython.tmLanguage

@@ -2562,8 +2562,8 @@ indirectly through syntactic constructs
   (\.)?\b(
     __(?:
       all | bases | class | code | debug | dict | doc | file | members
-      | metaclass | methods | module | mro | name | qualname | slots
-      | subclasses | version | weakref | wrapped
+      | metaclass | methods | module | mro | name | qualname | signature
+      | slots | subclasses | version | weakref | wrapped
     )__
   )\b
 </string>

grammars/src/MagicPython.syntax.yaml

@@ -1108,8 +1108,8 @@ repository:
         (\.)?\b(
           __(?:
             all | bases | class | code | debug | dict | doc | file | members
-            | metaclass | methods | module | mro | name | qualname | slots
-            | subclasses | version | weakref | wrapped
+            | metaclass | methods | module | mro | name | qualname | signature
+            | slots | subclasses | version | weakref | wrapped
           )__
         )\b
     captures:

test/builtins/builtins3.py

@@ -18,6 +18,7 @@
 some.__qualname__
 some.__code__
 some.__wrapped__
+some.__signature__
 some.__notspecial__
 
 
@@ -95,5 +96,8 @@
 __wrapped__   : source.python, support.variable.magic.python
 some          : source.python
 .             : source.python
+__signature__ : source.python, support.variable.magic.python
+some          : source.python
+.             : source.python
 __notspecial__ : source.python
               : source.python