Fix indentation in haskell-interactive-mode-multi-line

[gracjan]

There is this magic:

haskell-mode/haskell-interactive-mode.el

Line 254 in be9044b

(defun haskell-interactive-mode-multi-line (expr)

This means that by using C-j one can have multiline command like this:

λ> let x = 1
       y = 3

it will be wrapped in :{ and }: and send to GHCi like this:

:{
let x = 1
       y = 3
:}

Note that this is not documented and does not really work due to misaligned indentation.

Tasks:

• make it respect indentation
• document that by using C-j one can get multilne working

[geraldus]

It looks like inconsistency to me.

[gracjan]

Is this really fixed by #1341?

[fice-t]

Do you have an example that doesn't work? It works for me.

[gracjan]

Are we talking about the same functionality?

[fice-t]

Isn't this about properly wrapping an expression in :{ and :}? That's part of the PR. So the example

λ> let x = 1
       y = 3

Should work now.