gistfile1.txt

module Main where

-- In the following Haddock comment, place point in the first "Lorem
-- ipsum" line and then run M-x fill-paragraph.  Nothing will happen.

-- | Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc 
-- Lorem ipsum etc Lorem ipsum etc

-- But it works fine in the following comment.  Place point in the
-- first line of the next comment and run M-x fill-paragraph.

-- Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc 
-- Lorem ipsum etc Lorem ipsum etc

-- One workaround seems to be putting the Haddock indicator on a
-- separate line; is this what people are usually doing?  It results
-- in a wasted line.  Try fill-paragraph in the lorem ipsum line in
-- this sample.  fill-paragraph also works properly in the -- | line
-- too.

-- |
-- Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc Lorem ipsum etc 
-- Lorem ipsum etc Lorem ipsum etc