From: Bruno Barbier <brubar.cs@gmail.com>
To: Lawrence Bottorff <borgauf@gmail.com>,
emacs-orgmode Mailinglist <emacs-orgmode@gnu.org>
Subject: Re: Haskell org-mode problems redux
Date: Thu, 30 May 2019 23:25:08 +0200 [thread overview]
Message-ID: <5cf03c32.1c69fb81.2b66a.5651@mx.google.com> (raw)
In-Reply-To: <CAFAhFSXDn9y1Bh3C86UX23ea0_FRGzKQ+R+r3r=WsNFwqoptZw@mail.gmail.com>
Hi Lawrence,
Lawrence Bottorff <borgauf@gmail.com> writes:
> I've been trying to get Haskell to work in babel code blocks for a long
> time. A year or so ago I tried and eventually gave up. I tried again
> recently . . . same old problems, i.e., the code block is evaluated
> exclusively by the ghci REPL, which doesn't understand or play well with an
> org babel code block.
>
...
> Soooo, any ideas?
I'm using the header arguments:
:prologue ":{\n" :epilogue ":}\n"
to request org to insert those multiline tags :{ :}
(so, I'm not using ":set +m").
I'm defining these header args as headline properties (so that I don't
have to enter them again and again). Something like that:
#+begin_example
,** A title
:PROPERTIES:
:header-args:haskell: :prologue ":{\n" :epilogue ":}\n"
:END:
#+end_example
I'm telling ghci to not insert a prompt, when waiting for the end of a
multiline.
#+begin_src haskell
:set prompt-cont ""
#+end_src
Configured like this, it seems to be working quite well for me (great
job org and GHC teams!).
#+begin_src haskell
doubleSmallNumber x =
if x > 10
then x
else x * 2
#+end_src
No error.
#+begin_src haskell
let
showMe :: Int -> [String]
showMe x = [show x, show $ doubleSmallNumber x]
in
[ ["x", "doubleSmallNumber x"]
, showMe 3
, showMe 13
]
#+end_src
#+RESULTS:
| x | doubleSmallNumber x |
| 3 | 6 |
| 13 | 13 |
My config:
| ghci | 8.6.3 |
| emacs | 26.1 |
| org | 9.2.3 |
| OS | linux |
If it doesn't work for you on GNU/Linux, post the example and I will try
it on my computer (sorry, I won't be able to help you with Microsoft
Windows though).
Bruno
> LB
next prev parent reply other threads:[~2019-05-30 20:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 17:55 Haskell org-mode problems redux Lawrence Bottorff
2019-05-30 21:25 ` Bruno Barbier [this message]
2019-05-31 3:40 ` Lawrence Bottorff
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