Code Folding for Ruby

Vim
2

I have folding on by default, but frequently turn it off (often globally) shortly after launching vim. However, when I first start digging into a new codebase it’s nice to get an overview of what kinds of methods (and how many) are in a given file.

I use this plugin:

" Auto-fold files upon open. Disable session-wide with: <leader>nf
Bundle 'bruno-/vim-ruby-fold'

And have these additional settings in my .vimrc

"fold settings
" ------------
" toggle folding with za.
" fold everything with zM
" unfold everything with zR.
" zm and zr can be used too
" set foldmethod=syntax   "fold based on syntax (except for haml below)
" set foldnestmax=10      "deepest fold is 10 levels
" set nofoldenable        "dont fold by default
autocmd BufNewFile,BufRead *.haml setl foldmethod=indent nofoldenable
autocmd! FileType nofile setl foldmethod=indent nofoldenable

" Space to toggle folds.
nnoremap <Space> za
vnoremap <Space> za

" Toggles folds being enabled for this vim session
function! FoldToggle()
  if(&foldenable == 1)
    au WinEnter * set nofen
    au WinLeave * set nofen
    au BufEnter * set nofen
    au BufLeave * set nofen
    :set nofen
  else
    au WinEnter * set fen
    au WinLeave * set fen
    au BufEnter * set fen
    au BufLeave * set fen
    :set fen
  endif
endfunc

nnoremap <Leader>nf :call FoldToggle()<CR>