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Re: [O] Bug: Babel Haskell mode [8.0.3 (8.0.3-30-g56b864-elpa @ /Users/i
From: |
Eric Schulte |
Subject: |
Re: [O] Bug: Babel Haskell mode [8.0.3 (8.0.3-30-g56b864-elpa @ /Users/ix/.emacs.d/elpa/org-20130610/)] |
Date: |
Wed, 12 Jun 2013 23:18:51 -0600 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Simon Beaumont <address@hidden> writes:
> Well that's really odd: I modded the paths in init.el and did the following:
>
> emacs -Q -l init.el foo.org
>
> When I eval'ed the code block in foo.org (twice) I still get message:
> "Code block returned no value" I've attached the inferior haskell
> buffer and all relevant files.
>
> (add-to-list 'load-path "~/.emacs.d/elpa/haskell-mode-20130610.152")
I thought maybe it could be a difference between our haskell modes, so I
switched to the latest available through my elpa (haskell-mode-13.6),
and I still see the correct behavior.
> GHClet fac n = product [1..n]
> [(x,fac x) | x <- [0..11]]
> "org-babel-haskell-eoe"
> i, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer-gmp ... linking ... done.
> Loading package base ... linking ... done.
>> [(0,1),(1,1),(2,2),(3,6),(4,24),(5,120),(6,720),(7,5040),(8,40320),(9,362880),(10,3628800),(11,39916800)]
>> "org-babel-haskell-eoe"
>> let fac n = product [1..n]
> [(x,fac x) | x <- [0..11]]
> "org-babel-haskell-eoe"
>> [(0,1),(1,1),(2,2),(3,6),(4,24),(5,120),(6,720),(7,5040),(8,40320),(9,362880),(10,3628800),(11,39916800)]
>> "org-babel-haskell-eoe"
>
My *haskell* buffer looks different then yours. Namely I have
"Prelude>" where as you just have ">". I don't know if this is
significant. Maybe you've customized your ghci prompts in such a way
that the comint functions can no longer recognize where output begins?
,----
| GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
| Loading package ghc-prim ... let fac n = product [1..n]
| [(x,fac x) | x <- [0..11]]
| "org-babel-haskell-eoe"
| linking ... done.
| Loading package integer-gmp ... linking ... done.
| Loading package base ... linking ... done.
| Prelude> Prelude>
[(0,1),(1,1),(2,2),(3,6),(4,24),(5,120),(6,720),(7,5040),(8,40320),(9,362880),(10,3628800),(11,39916800)]
| Prelude> "org-babel-haskell-eoe"
| Prelude> let fac n = product [1..n]
| [(x,fac x) | x <- [0..11]]
| "org-babel-haskell-eoe"
| Prelude>
[(0,1),(1,1),(2,2),(3,6),(4,24),(5,120),(6,720),(7,5040),(8,40320),(9,362880),(10,3628800),(11,39916800)]
| Prelude> "org-babel-haskell-eoe"
| Prelude>
`----
I'm not sure what else this could be. One option would be to instrument
`org-babel-execute:haskell' or `org-babel-comint-with-output' with
edebug, and then step through evaluation to see if you can pinpoint
where the problem lies.
Hope this helps,
--
Eric Schulte
http://cs.unm.edu/~eschulte