\case should trigger auto-multiline mode in ghci
In ghci, most block heralds trigger the multiline mode when :set +m is on. However, \case does not (and should). Compare:
Prelude> ($True) (\case
Prelude| x -> x
Prelude| )
True
Prelude> ($True) $ \case
<interactive>:11:11:
Empty list of alternatives in case expression
Use EmptyCase to allow thisTrac metadata
| Trac field | Value |
|---|---|
| Version | 7.10.1 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |
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