[Haskell-cafe] Layout rules for if then else

[Vo Minh Thu]

What you state is true within a `do` expression. What you wrote is a
single if_then_else_ expression on the rhs of the function definition.

Cheers,
Thu

2015-03-10 17:01 GMT+01:00 Alan & Kim Zimmerman <alan.zimm at gmail.com>:
> I am working on ghc-exactprint, and need to flag points where layout must be
> preserved, and considering the `if` statement.
>
> My understanding of the layout rules for if then else is that the `then` has
> to start more to the right than the `if`.
>
> Using GHC 7.10 RC2, ghci cheerfully loads the following
>
> ```
> f =
>     if True
>  then 1
>   else 2
>
> ```
>
> Is this valid? Have the rules been relaxed?
>
> Alan
>
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