typealias for function signature on multiple lines ignores all but 1st line

[DivineDominion]

Here's what we have in ReSwift, a typealias on 2 lines:

public typealias Middleware<State> = (@escaping DispatchFunction, @escaping () -> State?)
    -> (@escaping DispatchFunction) -> DispatchFunction

Here's what jazzy generates:

public typealias Middleware<State> = (@escaping DispatchFunction, @escaping () -> State?)

(See our docs)

I tried this with a clean install of the latest 0.13.0 and the result is the same.

[johnfairh]

For now you'll need to include all the declaration on the same line.

It's going wrong due to a cascade of historical Swift bugs unfortunately:

• Jazzy doesn't even get the multi-line decl from your source code because of Problem parsing generic function parameters when function split over multiple lines #896;
• Jazzy doesn't trust the compiler's printed decl (which is complete but all on one line) because of a workaround for SR-6321.

SR-6321 was fixed in Swift 4.2 so we could maybe remove the workaround now?
Or at least teach the workaround about the possibility of a fix.

Each time I've tried to fix 896 a new problem in the Swift compiler has got in the way - will make my annual attempt this week and see how Swift 5.1 is.

[DivineDominion]

Oh man that sounds way more horrible than I would've expected. Fingers crossed!

[johnfairh]

Fixed the 'truncated' part; remaining 'should be on two lines' part is tracked by 896.

[DivineDominion]

Great, it works now 🙌 Thanks