Description
Consider the following file; emacs 25.0.50 running with "-Q" and haskell-mode from git repository.
module A where
import Data.List
import Data.Ord
something :: [(Int, Int)]
something = sortBy (comparing fst) [(k, -k) | k <- [1..10]]
Start a ghci session, with no special settings. Then placing point on sortBy shows its type, but placing point on comparing shows nothing, which is disappointing.
I tried to set haskell-doc-use-inf-haskell (which I found in haskell-doc-sym-doc to t, but it did something rather strange to the ghci session, probably because I had enabled interactive-haskell-mode instead of inferior-haskell-mode.
Maybe I'm missing some configuration or something (I don't think so), but why doesn't haskell-mode (with interactive-haskell-mode) display types of fairly common functions, by default? How do I get it to do it?
P.S. Would it be interesting if haskell-mode could show the type of a selected region? That is, if you selected "comparing fst", it would show you the type comparing fst :: Ord a => (a, b) -> (a, b) -> Ordering.
I have patches, but is this actually a bug or am I misunderstanding something? I can't tell from documentation.