Auto-complete OPTIONS_GHC inserts an extra `-`

[dspies-leapyear]

I'm using the ide-haskell-hie package for Atom

When I start to type GHC at the top of the file it offers the suggestion GHC and I can hit enter to autocomplete
{-# OPTIONS_GHC -option #-}
with option selected

Then if I start to type in Wno-red, it offers the option -Wno-redundant-constraints and I can hit enter to auto-complete again. But now there are two dashes in front of the option so I get an unknown flag error.

[alanz]

I can recreate this in vscode too. I think there is a mismatch at the client level, where the scope of the thing being completed does not include the leading -, but the replacement text does.

I suspect the simplest solution is to remove the leading - in the provided completions, but I am not 100% sure this is the correct solution.

[dspies-leapyear]

I thought the fix would be to have -option be selected rather than just option when you autocomplete the first time. That way the - gets replaced rather than appended to.
I just checked right now and if I manually select -option and start typing, autocompletion works fine.

[alanz]

Yes, but I think the default behaviour is to work on a symbol, so the client will not include the leading -.

So my proposed fix should make that work better.