Merge pull request #393 from viralpraxis/fix-extra-begin-within-dsym

Fix extra `begin` within `dsym` edge case

Author: mbj

lib/unparser/emitter/dsym.rb

@@ -33,7 +33,7 @@ def emit_str_child(value)
 
       def emit_begin_child(component)
         write('#{')
-        visit(unwrap_single_begin(component))
+        visit(unwrap_single_begin(component)) if component.children.any?
         write('}')
       end
     end # DSym

test/corpus/semantic/literal.rb

@@ -12,3 +12,4 @@
 10.2e10000000000
 -10.2e10000000000
 w(foo bar)
+{ "#{}": {} }