/usr/share/nvim/runtime/ftplugin/help.vim is in neovim-runtime 0.2.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | " Vim filetype plugin file
" Language: Vim help file
" Previous Maintainer: Nikolai Weibull <now@bitwi.se>
" Latest Revision: 2008-07-09
if exists("b:did_ftplugin")
finish
endif
let b:did_ftplugin = 1
let s:cpo_save = &cpo
set cpo&vim
let b:undo_ftplugin = "setl fo< tw< cole< cocu< keywordprg<"
setlocal formatoptions+=tcroql textwidth=78
if has("conceal")
setlocal cole=2 cocu=nc
endif
" Prefer Vim help instead of manpages.
setlocal keywordprg=:help
if !exists('g:no_plugin_maps')
function! s:show_toc() abort
let bufname = bufname('%')
let info = getloclist(0, {'winid': 1})
if !empty(info) && getwinvar(info.winid, 'qf_toc') ==# bufname
lopen
return
endif
let toc = []
let lnum = 2
let last_line = line('$') - 1
let last_added = 0
let has_section = 0
let has_sub_section = 0
while lnum && lnum <= last_line
let level = 0
let add_text = ''
let text = getline(lnum)
if text =~# '^=\+$' && lnum + 1 < last_line
" A de-facto section heading. Other headings are inferred.
let has_section = 1
let has_sub_section = 0
let lnum = nextnonblank(lnum + 1)
let text = getline(lnum)
let add_text = text
while add_text =~# '\*[^*]\+\*\s*$'
let add_text = matchstr(add_text, '.*\ze\*[^*]\+\*\s*$')
endwhile
elseif text =~# '^[A-Z0-9][-A-ZA-Z0-9 .][-A-Z0-9 .():]*\%([ \t]\+\*.\+\*\)\?$'
" Any line that's yelling is important.
let has_sub_section = 1
let level = has_section
let add_text = matchstr(text, '.\{-}\ze\s*\%([ \t]\+\*.\+\*\)\?$')
elseif text =~# '\~$'
\ && matchstr(text, '^\s*\zs.\{-}\ze\s*\~$') !~# '\t\|\s\{2,}'
\ && getline(lnum - 1) =~# '^\s*<\?$\|^\s*\*.*\*$'
\ && getline(lnum + 1) =~# '^\s*>\?$\|^\s*\*.*\*$'
" These lines could be headers or code examples. We only want the
" ones that have subsequent lines at the same indent or more.
let l = nextnonblank(lnum + 1)
if getline(l) =~# '\*[^*]\+\*$'
" Ignore tag lines
let l = nextnonblank(l + 1)
endif
if indent(lnum) <= indent(l)
let level = has_section + has_sub_section
let add_text = matchstr(text, '\S.*')
endif
endif
let add_text = substitute(add_text, '\s\+$', '', 'g')
if !empty(add_text) && last_added != lnum
let last_added = lnum
call add(toc, {'bufnr': bufnr('%'), 'lnum': lnum,
\ 'text': repeat(' ', level) . add_text})
endif
let lnum = nextnonblank(lnum + 1)
endwhile
call setloclist(0, toc, ' ')
call setloclist(0, [], 'a', {'title': 'Help TOC'})
lopen
let w:qf_toc = bufname
endfunction
nnoremap <silent><buffer> gO :call <sid>show_toc()<cr>
endif
let &cpo = s:cpo_save
unlet s:cpo_save
|