haskell-indentation's behaviour is slightly different from haskell-indent

[konn]

In the latest haskell-mode's manual,turn-on-haskell-indentation is described as follows:

Improved variation of turn-on-haskell-indent indentation mode. Rebinds RET and DEL, so that indentations can be set and deleted as if they were real tabs.

To me, haskell-indentation is more sensible about tab-width, so I prefer this indentation mode rather than haskell-indent.

But I found there are different behaviours other than RET and DEL (in haskell-mode-20131013, with Cocoa Emacs 2013-03-11)!

RET behaviour

If I use turn-on-haskell-indentation, delete key's behaviour disables Delete key's crucial behaviour.

Suppose I select (i.e. set region on) () in the below code and put the cursor right after (:

main = putStrLn ()
--              ~~^ cursor here

With turn-on-haskell-indent, If I press "Delete" Key, then () is deleted from source and I get the following:

main = putStrLn 

But, with haskell-indentation, I get the following:

main = putStrLn (

Only the character right before the cursor is deleted!

Function-name completion

In haskell-indent, it also completes the function name.

Suppose following situation:

fib :: Int -> Int
fib 0 = 1
--       ^ cursor here

When I hit C-j and TAB twice, haskell-indent completes the function name:

fib :: Int -> Int
fib 0 = 1
fib 

But with haskell-indentation, function name is not completed!

I think above two difference is inconvenient, so I want haskell-indentation behaves like haskell-indent in this two situations.

[gracjan]

This issue has not seen activity for a very long time. Is this still something we should be concerned about?

[gracjan]

Part of request submitted as a separate issue #1027.