Hi Karl, Then let me change my question; how can I get all the module names which (re-)export a given function name? I can make my Emacs Lisp code work if I can get a list of all such module names. Thanks! - Jong-won 2013-07-25 ?? 2:49, Karl Voelker ? ?:

The problem is that length is defined in GHC.List and simple re-exported by Data.List (and by Prelude).

You could try tying into a command-line installation of Hoogle. A quick search for "length" on the Hoogle website shows that it finds it in both Prelude and Data.List.

-Karl

On Wed, Jul 24, 2013 at 8:27 PM, Jong-won Choi mailto:oz.jongwon.choi@gmail.com> wrote:

Hi,

I am self-teaching Haskell and also try to fix a slightly broken Emacs mode for Haskell.

I'd like to browse Haskell documentation from Emacs - C-c C-d on a function name, say.

Current Emacs Lisp Haskell mode implementation uses return value of ':info', for example, GHC.List for length (the function name I want to browse). Unfortunately, this does not work because Glasgow Haskell's HTML doc uses module name Data.List(i.e. Data-List.html) instead of GHC.List.

I'd like to get 'Data.List' from 'length'. How can I do this?

For example, if it is Common Lisp, this can be achieved by: (symbol-package 'length)

One more thing. I think :info command is only for GHC. Is there any portable ways which will work on other implementations as well?

Thanks!

- Jong-won Choi

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