Merge pull request #50 from ruby-syntax-tree/match-double-star-nil

in **nil

Author: kddnewton

lib/syntax_tree/node.rb

@@ -8677,7 +8677,11 @@ def deconstruct_keys(keys)
     end
 
     def format(q)
-      q.format(value) if value
+      if value == :nil
+        q.text("nil")
+      elsif value
+        q.format(value)
+      end
     end
   end
 

lib/syntax_tree/parser.rb

@@ -2991,7 +2991,7 @@ def on_var_alias(left, right)
     #   ) -> VarField
     def on_var_field(value)
       location =
-        if value
+        if value && value != :nil
           value.location
         else
           # You can hit this pattern if you're assigning to a splat using

test/fixtures/hshptn.rb

@@ -48,3 +48,7 @@
 case foo
 in {}
 end
+%
+case foo
+in **nil
+end