() C K Kashyap <ckkashyap@gmail.com>
() Fri, 28 Mar 2014 14:36:47 +0530

   I am trying to go-over a huge c++ file. In vim, I can collapse a
   huge set of lines by simply highlighting it an then doing a zf.
   I was wondering if I can do something similar in emacs - rather
   how I can do it in emacs.

   I tried hs-minor-mode but it appears to have pre-defined notions
   of "foldable" blocks.

You can (ab)use ‘hs-hide-comment-region’, like so:

 (defun hs-hide-region (beg end)
   "Basically (hs-hide-comment-region BEG END), as a command."
   (interactive "r")
   (hs-hide-comment-region beg end))

Does that work for you?  I tested lightly w/ Emacs Lisp only.
(See also ‘hs-set-up-overlay’.)

-- 
Thien-Thi Nguyen
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