indent bug in haskell-indent.el

[kosl90]

This bug annoyed me so much, if there is such a code fragment:

main = do
  (fileName:_) <- getArgs
  writeFile fileName "content"

I cannot indent the writeFile line, emacs told me "Wrong type argument: arryp, nil". haskell-indentation.el works right, but I cannot use the cool thing that completes my function name when I press [TAB] below my function declaration.

I will appreciate that if you guys fix it.

[ivan-m]

Why would you want to indent the writeFile line? I'm assuming your issue is when using haskell-indent? (And what cool thing are you using to complete the function name?)

[kosl90]

Sorry for giving you bad code fragment. I mean if writeFile line is not on the right place, I cannot indent the writeFile line to the right place look like the above fragment.

The cool thing is:

main :: IO ()

when I press [TAB] on the line blow the declaration, emacs will fill the function name for me automatically. I think indent.el provide that cool thing, because I can use this cool thing until indent.el is used instead of indentation.el.

I'm new to emacs, and my emacs configuration comes from https://github.com/redguardtoo/emacs.d. Those two things might be producted by other things.

[deftsp]

I have that problem too. It seems `haskell-indent-empty' return a non-string value caused it.

[gracjan]

@kosl90, @ivan-m, @deftsp: Itried to reproduce your problem with current github version of haskell-mode and could not trigger described behavior. I'vre tried the code:

main :: IO ()
main = do
  (fileName:_) <- getArgs
  writeFile fileName "content"

I've used both haskell-indent and haskell-indentation. I could not trigger the error on any of the lines.

Can you check out if the problem described still exists?

[gracjan]

@chrisdone, @purcell, this seems to be fixed.