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After ApplicatveDo strips the last `return` during renaming, the pretty printer has to restore it. However, if the return was followed by `$`, the dollar was stripped too and not restored. For example, the last stamement in: ``` foo = do x <- ... ... return $ f x ``` would be printed as: ``` return f x ``` This commit preserved the dolar, so it becomes: ``` return $ f x ```After ApplicatveDo strips the last `return` during renaming, the pretty printer has to restore it. However, if the return was followed by `$`, the dollar was stripped too and not restored. For example, the last stamement in: ``` foo = do x <- ... ... return $ f x ``` would be printed as: ``` return f x ``` This commit preserved the dolar, so it becomes: ``` return $ f x ```
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