Indenting data types seems broken and not configurable

[karljs]

I realize there is a lot going on with indentation right now, but this seemed like a pretty extreme case of something simple not working at all. I looked through the other issues, too, and didn't spot anything. Here's the scenario. Start defining a new data type:

data Foo = Bar

Newline, pipe character, indent, now gives:

data Foo = Bar
  | Baz

And repeated tab presses do nothing to indent this further. I want to align the pipe character with the equals character, as is common when not using GADTs.

If I already have two or more lines in the data type definition, then adding more after that seems to work just fine. Thinking maybe this was just a new default, I looked through the customization options, but didn't see one that corresponds to this.

[gracjan]

Thanks for the report. Can you add a test case in tests/haskell-indentation-tests.el?

[karljs]

Should be no problem. I'll take a look when I have some more spare minutes.

[gracjan]

Great!

[gracjan]

@karljs: How do you indent this fragment:

data User = User
  { userName :: String }
          | Admin
  { adminName :: String }

?

[karljs]

I wouldn't claim to have the definitive answer to this, but I would probably do the following.

data User = User { userName :: String
                 , ...}
          | Admin { adminName :: String
                  , ...}

This also seems to work fine for me currently.

[gracjan]

Thanks. We try to reconcile two styles of indentation to reduce a bit of complexity. Hence the question.