Fix n-th-ref dstring interpolation

mbj · Nov 9, 2020 · 60a03d6 · 60a03d6
1 parent 7ca6e76
commit 60a03d6
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diff --git a/lib/unparser/writer/dynamic_string.rb b/lib/unparser/writer/dynamic_string.rb
@@ -20,7 +20,7 @@ class DynamicString
         ]
       )
 
-      FLAT_INTERPOLATION = %i[ivar cvar gvar].to_set.freeze
+      FLAT_INTERPOLATION = %i[ivar cvar gvar nth_ref].to_set.freeze
 
       private_constant(*constants(false))
 

diff --git a/test/corpus/literal/dstr.rb b/test/corpus/literal/dstr.rb
@@ -17,3 +17,7 @@
   #{}
   #{}
 HEREDOC
+"a#$1"
+"a#$a"
+"a#@a"
+"a#@@a"