Merge pull request #3322 from xixixao/issue1099

Fix #1099, remove in empty array optimization

test/operators.coffee

@@ -218,6 +218,10 @@ test "#1714: lexer bug with raw range `for` followed by `in`", ->
 test "#1099: statically determined `not in []` reporting incorrect result", ->
   ok 0 not in []
 
+test "#1099: make sure expression tested gets evaluted when array is empty", ->
+  a = 0
+  (do -> a = 1) in []
+  eq a, 1
 
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