是否有折叠vimrc文件的最佳实践

#1 楼

"" vim:fdm=expr:fdl=0
"" vim:fde=getline(v\:lnum)=~'^""'?'>'.(matchend(getline(v\:lnum),'""*')-2)\:'='

#2 楼

""""""""""""""""""""""""
"  THIS IS A CATEGORY  "
""""""""""""""""""""""""
"" Autofolding .vimrc
" see http://vimcasts.org/episodes/writing-a-custom-fold-expression/
""" defines a foldlevel for each line of code
function! VimFolds(lnum)
  let s:thisline = getline(a:lnum)
  if match(s:thisline, '^"" ') >= 0
    return '>2'
  endif
  if match(s:thisline, '^""" ') >= 0
    return '>3'
  endif
  let s:two_following_lines = 0
  if line(a:lnum) + 2 <= line('$')
    let s:line_1_after = getline(a:lnum+1)
    let s:line_2_after = getline(a:lnum+2)
    let s:two_following_lines = 1
  endif
  if !s:two_following_lines
      return '='
    endif
  else
    if (match(s:thisline, '^"""""') >= 0) &&
       \ (match(s:line_1_after, '^"  ') >= 0) &&
       \ (match(s:line_2_after, '^""""') >= 0)
      return '>1'
    else
      return '='
    endif
  endif
endfunction

""" defines a foldtext
function! VimFoldText()
  " handle special case of normal comment first
  let s:info = '('.string(v:foldend-v:foldstart).' l)'
  if v:foldlevel == 1
    let s:line = ' ◇ '.getline(v:foldstart+1)[3:-2]
  elseif v:foldlevel == 2
    let s:line = '   ●  '.getline(v:foldstart)[3:]
  elseif v:foldlevel == 3
    let s:line = '     ▪ '.getline(v:foldstart)[4:]
  endif
  if strwidth(s:line) > 80 - len(s:info) - 3
    return s:line[:79-len(s:info)-3+len(s:line)-strwidth(s:line)].'...'.s:info
  else
    return s:line.repeat(' ', 80 - strwidth(s:line) - len(s:info)).s:info
  endif
endfunction

""" set foldsettings automatically for vim files
augroup fold_vimrc
  autocmd!
  autocmd FileType vim 
                   \ setlocal foldmethod=expr |
                   \ setlocal foldexpr=VimFolds(v:lnum) |
                   \ setlocal foldtext=VimFoldText() |
     "              \ set foldcolumn=2 foldminlines=2
augroup END

""""""""""""""
"  Category  "
""""""""""""""
"" Subcategory
""" Subsubcategory
" Just a comment, gets ignored no matter where

let mapleader = "\<space>"
" Toggle folds
nnoremap <silent> <leader><Space> @=(foldlevel('.')?'za':"\<Space>")<CR>
vnoremap <leader><space> zf

#3 楼

"--- Vim Options
source ~/.vim/config/vim_options.vim

"--- Here Be Functions!
" (need to be sourced before stuff that uses 'em)
runtime! functions/*.vim

"--- Key Mapping
source ~/.vim/config/key_mapping.vim

"--- Folding
source ~/.vim/config/folding.vim

"--- Autocmds
source ~/.vim/config/autocmds.vim

"--- We Are Plugged In!
source ~/.vim/config/plugins.vim

" vim: ft=vim fdm=marker

#4 楼

# vim: filetype=vim foldmethod=marker foldlevel=0 foldcolumn=3

#5 楼

#6 楼

"# Folding

" Fold with ATX style headers - "# is H1, "## is H2, and so on
" vim:fdm=expr:fdl=0
" vim:fde=getline(v\:lnum)=~'^"#'?'>'.(matchend(getline(v\:lnum),'"#*')-1)\:'='

#7 楼

fun! MyFoldLevel(linenum)
    if ! exists('w:nextline')
        let w:nextline = 0
        let w:insideafun = 0
    endif

    if w:nextline == 1
        let w:nextline = 0
        let w:insideafun = 0
    endif

    let l:line = getline(a:linenum)

    if l:line =~# '^[[:space:]]*fun'
        let w:insideafun = 1
        return '>1'
    elseif l:line =~# '^[[:space:]]*endf'
        let w:nextline = 1
        return '<1'
    endif

    if w:insideafun == 1
        return 1
    else
        return 0
    endif
endfun

" vim:fde=MyFoldLevel(v\:lnum):fdm=expr:

#8 楼

augroup vim_folding
    autocmd!
    autocmd FileType vim set foldmethod=expr foldlevel=0
    " note that double quote in foldexpr has to be escaped with backslash
    autocmd FileType vim set foldexpr=getline(v:lnum)=~'^\"#'?'>'.(matchend(getline(v:lnum),'\"#*')-1):'='
augroup END

function! VimFolds(lnum)
    let s:cur_line = getline(a:lnum)

    if s:cur_line =~ '^"#'
        return '>' . (matchend(s:cur_line, '"#*')-1)
    else
        return '='
    endif

endfunction

autocmd FileType vim set foldexpr=VimFolds(v:lnum)