"Ignore close implementation" seems to be broken

[neongreen]

I'm not sure how "ignore closed implementation" (now the default) is supposed to work, but I think it used to work in this case and now it doesn't. Bisecting didn't help, though, so maybe I'm mistaken and it in fact never worked.

Using this file as an example:

data ContentPart =
  ContentPart
    { contentPartThumbnail :: !(Maybe Thumbnail),
      contentPartMMark :: !MMark
    }
  deriving (Show)

-- example.hs

Produces a result where ContentPart is listed twice:

$ stack run -- hasktags example.hs -o-

ContentPart	example.hs	1
ContentPart	example.hs	2
contentPartMMark	example.hs	4
contentPartThumbnail	example.hs	3

hasktags version: 0.71.2 (93d2b29ecf4ac98c7d5f0ebb9f32d9d6e5182e67, latest master as of today).