M-j does not work in block comments

[jstolarek]

Assume I have:

-- my comment|

where | represents cursor position. Pressing M-j should continue the comment in the next line (currently affected by #981):

-- my comment
-- |

That doesn't work with block comments. Assume I have:

{-
  my comment|
-}

Pressing M-j gives:

{-
  my comment-}
{-|
-}

The correct result is:

{-
  my comment
  |
-}

[gracjan]

Documentation says:

(indent-new-comment-line &optional SOFT)

This command is intended for styles where you write a comment per line, starting a new comment (and terminating it if necessary) on each line. If you want to continue one comment across several lines, use M-x newline-and-indent.

So it seem we are doing things according to the documentation, although I agree that it does not make much sense.

[jstolarek]

Related: #393

[gracjan]

Same as #225.