Function name auto-completion in Main prompt in Emacs - haskell mode

Question

I am writing a .hs (haskell) file through emacs and loading it with 'load file' (C-c C-l).

For testing the functions, I switchover to Main Prompt Window (C-x o), where I need to type complete function name. I am sure there must be a way to get the function names through auto-completion, but I don't know how to do it and could not find?

Please guide.

Answer 1

This answer found in Jedai's comment on the question.

When in Main prompt window, if you require, say function "doubleMe" , just type initial 2-3 letters like "dou" and then press Meta-/ (the meta key or Alt key and slash together); you will find the auto-completed function name. In this case - "doubleMe".

If you have multiple function names or other words in the buffer and around; which starts with "dou" then keep on pressing Meta-/ , till you find the desired name.

Note that this feature works in all windows.

Answer 2

Yes. I use imenu.el

For C language there are many possibilities.

It is expected that imenu shoud work for all possible languages.