Indentation requirements for parsing seem inconsistent

The "golden rule of indentation" does not seem to be strictly adhered to in all cases: there is an interaction between let/where clauses and do-notation that makes indentation requirements different in different situations:

Example 1, parsed successfully:

f = let y = do
        Just 1
    in y

Example 2, causes an error:

f = let y =
        Just 1
    in y

Example 3, causes an error:

f = do
Just 1

This behavior seems inconsistent to me.

See also http://stackoverflow.com/questions/32531508/haskell-parse-error-from-incorrect-indent.

Trac metadata

Trac field	Value
Version	7.10.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler (Parser)
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