Let in do-notation with braces does not parse
According to the the syntax at https://www.haskell.org/onlinereport/haskell2010/haskellch10.html the following do-notation should parse:
do {let x = 4; print x}But it doesn't.
do {let x = 4 in print x}parses OK. Doesn't look like a new bug, I tried with GHC 7.8 and same result. Googling "haskell do {let ds; es} = let ds in do {es}" also shows quite a lot of people taught Haskell that way, so maybe it once worked?
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.0.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
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