mirror of
https://github.com/neovim/neovim.git
synced 2024-12-20 11:15:14 -07:00
98 lines
2.8 KiB
VimL
98 lines
2.8 KiB
VimL
" Vim filetype plugin file
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" Language: Vim help file
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" Previous Maintainer: Nikolai Weibull <now@bitwi.se>
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" Latest Revision: 2008-07-09
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if exists("b:did_ftplugin")
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finish
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endif
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let b:did_ftplugin = 1
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let s:cpo_save = &cpo
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set cpo&vim
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let b:undo_ftplugin = "setl fo< tw< cole< cocu< keywordprg<"
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setlocal formatoptions+=tcroql textwidth=78
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if has("conceal")
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setlocal cole=2 cocu=nc
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endif
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" Prefer Vim help instead of manpages.
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setlocal keywordprg=:help
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if !exists('g:no_plugin_maps')
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function! s:show_toc() abort
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let bufname = bufname('%')
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let info = getloclist(0, {'winid': 1})
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if !empty(info) && getwinvar(info.winid, 'qf_toc') ==# bufname
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lopen
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return
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endif
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let toc = []
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let lnum = 2
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let last_line = line('$') - 1
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let last_added = 0
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let has_section = 0
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let has_sub_section = 0
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while lnum && lnum <= last_line
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let level = 0
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let add_text = ''
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let text = getline(lnum)
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if text =~# '^=\+$' && lnum + 1 < last_line
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" A de-facto section heading. Other headings are inferred.
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let has_section = 1
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let has_sub_section = 0
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let lnum = nextnonblank(lnum + 1)
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let text = getline(lnum)
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let add_text = text
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while add_text =~# '\*[^*]\+\*\s*$'
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let add_text = matchstr(add_text, '.*\ze\*[^*]\+\*\s*$')
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endwhile
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elseif text =~# '^[A-Z0-9][-A-ZA-Z0-9 .][-A-Z0-9 .():]*\%([ \t]\+\*.\+\*\)\?$'
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" Any line that's yelling is important.
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let has_sub_section = 1
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let level = has_section
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let add_text = matchstr(text, '.\{-}\ze\s*\%([ \t]\+\*.\+\*\)\?$')
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elseif text =~# '\~$'
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\ && matchstr(text, '^\s*\zs.\{-}\ze\s*\~$') !~# '\t\|\s\{2,}'
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\ && getline(lnum - 1) =~# '^\s*<\?$\|^\s*\*.*\*$'
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\ && getline(lnum + 1) =~# '^\s*>\?$\|^\s*\*.*\*$'
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" These lines could be headers or code examples. We only want the
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" ones that have subsequent lines at the same indent or more.
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let l = nextnonblank(lnum + 1)
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if getline(l) =~# '\*[^*]\+\*$'
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" Ignore tag lines
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let l = nextnonblank(l + 1)
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endif
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if indent(lnum) <= indent(l)
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let level = has_section + has_sub_section
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let add_text = matchstr(text, '\S.*')
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endif
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endif
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let add_text = substitute(add_text, '\s\+$', '', 'g')
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if !empty(add_text) && last_added != lnum
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let last_added = lnum
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call add(toc, {'bufnr': bufnr('%'), 'lnum': lnum,
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\ 'text': repeat(' ', level) . add_text})
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endif
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let lnum = nextnonblank(lnum + 1)
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endwhile
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call setloclist(0, toc, ' ')
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call setloclist(0, [], 'a', {'title': 'Help TOC'})
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lopen
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let w:qf_toc = bufname
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endfunction
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nnoremap <silent><buffer> gO :call <sid>show_toc()<cr>
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endif
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let &cpo = s:cpo_save
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unlet s:cpo_save
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