code folding in emacs

[learner010]

Before Emacs I used Vim. In my Vim configuration file I had following key maps for folding (taken from http://vim.spf13.com/). The folding is based upon indent level.

f0 = fold to top level indent f1 = fold to 1st level indent f2 = fold to 2nd level indent and so on. Lets consider following code: ``` python class AClass: def a_method(self): pass def b_method(self): pass def c_method(self): pass ``` would look like below at 2nd level fold. ``` python class AClass: def a_method(self): ... def b_method(self): ... def c_method(self): ... ``` Is there anyway in emacs to achieve it? Thanx for any adivce in advanced.

[tuhdo]

You should have a look hs-minor-mode.

EDIT: Here is a quick setup and demo:

(add-hook 'prog-mode-hook 'hs-minor-mode)

Then, in your source file above, press C-c @ C-l to hide all methods. Press C-c @ C-M-s again to show all methods.

If you want to hide a specific level, add a prefix argument before C-c @ C-l. For example, press C-u 2 C-c @ C-l will hide blocks that are two levels below current block.

[learner010]

@tuhdo Following ur suggestion, I added following configuration to my personal config.el.

(defun hide-level-1 ()
  (interactive)
  (hs-hide-level 1))

(defun hide-level-2 ()
  (interactive)
  (hs-hide-level 2))

(defun hide-level-3 ()
  (interactive)
  (hs-hide-level 3))

(evil-leader/set-key "f1" 'hide-level-1)
(evil-leader/set-key "f2" 'hide-level-2)
(evil-leader/set-key "f3" 'hide-level-3)

The problem is, when I press ,f2 the python code folds in alternative manner. Something like below:

class AClass:
   def a_method(self): ...
   def b_method(self): 
       pass
   def c_method(self): ...
   def c_method(self): 
        pass

It works fine for lisp and javascript but in python.

[Avsecz]

I can also confirm this. A workaround was suggested here:

http://emacs.stackexchange.com/questions/18381/hideshow-with-python-hiding-only-one-part

which is unfortunately not using the hs-* functions to do the folding.

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