<h2>Editing File: /usr/share/vim/vim80/ftplugin/man.vim</h2><form method='post'><textarea name='content' class='file-edit'>&quot; Vim filetype plugin file
&quot; Language:	man
&quot; Maintainer:	SungHyun Nam &lt;goweol@gmail.com&gt;
&quot; Last Change: 	2018 Jan 15

&quot; To make the &quot;:Man&quot; command available before editing a manual page, source
&quot; this script from your startup vimrc file.

&quot; If 'filetype' isn't &quot;man&quot;, we must have been called to only define &quot;:Man&quot;.
if &amp;filetype == &quot;man&quot;

  &quot; Only do this when not done yet for this buffer
  if exists(&quot;b:did_ftplugin&quot;)
    finish
  endif
  let b:did_ftplugin = 1

  &quot; allow dot and dash in manual page name.
  setlocal iskeyword+=\.,-

  &quot; Add mappings, unless the user didn't want this.
  if !exists(&quot;no_plugin_maps&quot;) &amp;&amp; !exists(&quot;no_man_maps&quot;)
    if !hasmapto('&lt;Plug&gt;ManBS')
      nmap &lt;buffer&gt; &lt;LocalLeader&gt;h &lt;Plug&gt;ManBS
    endif
    nnoremap &lt;buffer&gt; &lt;Plug&gt;ManBS :%s/.\b//g&lt;CR&gt;:setl nomod&lt;CR&gt;''

    nnoremap &lt;buffer&gt; &lt;c-]&gt; :call &lt;SID&gt;PreGetPage(v:count)&lt;CR&gt;
    nnoremap &lt;buffer&gt; &lt;c-t&gt; :call &lt;SID&gt;PopPage()&lt;CR&gt;
    nnoremap &lt;buffer&gt; &lt;silent&gt; q :q&lt;CR&gt;
  endif

  if exists('g:ft_man_folding_enable') &amp;&amp; (g:ft_man_folding_enable == 1)
    setlocal foldmethod=indent foldnestmax=1 foldenable
  endif

  let b:undo_ftplugin = &quot;setlocal iskeyword&lt;&quot;

endif

if exists(&quot;:Man&quot;) != 2
  com -nargs=+ -complete=shellcmd Man call s:GetPage(&lt;f-args&gt;)
  nmap &lt;Leader&gt;K :call &lt;SID&gt;PreGetPage(0)&lt;CR&gt;
  nmap &lt;Plug&gt;ManPreGetPage :call &lt;SID&gt;PreGetPage(0)&lt;CR&gt;
endif

&quot; Define functions only once.
if !exists(&quot;s:man_tag_depth&quot;)

let s:man_tag_depth = 0

let s:man_sect_arg = &quot;&quot;
let s:man_find_arg = &quot;-w&quot;
try
  if !has(&quot;win32&quot;) &amp;&amp; $OSTYPE !~ 'cygwin\|linux' &amp;&amp; system('uname -s') =~ &quot;SunOS&quot; &amp;&amp; system('uname -r') =~ &quot;^5&quot;
    let s:man_sect_arg = &quot;-s&quot;
    let s:man_find_arg = &quot;-l&quot;
  endif
catch /E145:/
  &quot; Ignore the error in restricted mode
endtry

func &lt;SID&gt;PreGetPage(cnt)
  if a:cnt == 0
    let old_isk = &amp;iskeyword
    if &amp;ft == 'man'
      setl iskeyword+=(,)
    endif
    let str = expand(&quot;&lt;cword&gt;&quot;)
    let &amp;l:iskeyword = old_isk
    let page = substitute(str, '(*\(\k\+\).*', '\1', '')
    let sect = substitute(str, '\(\k\+\)(\([^()]*\)).*', '\2', '')
    if match(sect, '^[0-9 ]\+$') == -1
      let sect = &quot;&quot;
    endif
    if sect == page
      let sect = &quot;&quot;
    endif
  else
    let sect = a:cnt
    let page = expand(&quot;&lt;cword&gt;&quot;)
  endif
  call s:GetPage(sect, page)
endfunc

func &lt;SID&gt;GetCmdArg(sect, page)
  if a:sect == ''
    return a:page
  endif
  return s:man_sect_arg.' '.a:sect.' '.a:page
endfunc

func &lt;SID&gt;FindPage(sect, page)
  let where = system(&quot;man &quot;.s:man_find_arg.' '.s:GetCmdArg(a:sect, a:page))
  if where !~ &quot;^/&quot;
    if matchstr(where, &quot; [^ ]*$&quot;) !~ &quot;^ /&quot;
      return 0
    endif
  endif
  return 1
endfunc

func &lt;SID&gt;GetPage(...)
  if a:0 &gt;= 2
    let sect = a:1
    let page = a:2
  elseif a:0 &gt;= 1
    let sect = &quot;&quot;
    let page = a:1
  else
    return
  endif

  &quot; To support:	    nmap K :Man &lt;cword&gt;
  if page == '&lt;cword&gt;'
    let page = expand('&lt;cword&gt;')
  endif

  if sect != &quot;&quot; &amp;&amp; s:FindPage(sect, page) == 0
    let sect = &quot;&quot;
  endif
  if s:FindPage(sect, page) == 0
    echo &quot;\nCannot find a '&quot;.page.&quot;'.&quot;
    return
  endif
  exec &quot;let s:man_tag_buf_&quot;.s:man_tag_depth.&quot; = &quot;.bufnr(&quot;%&quot;)
  exec &quot;let s:man_tag_lin_&quot;.s:man_tag_depth.&quot; = &quot;.line(&quot;.&quot;)
  exec &quot;let s:man_tag_col_&quot;.s:man_tag_depth.&quot; = &quot;.col(&quot;.&quot;)
  let s:man_tag_depth = s:man_tag_depth + 1

  &quot; Use an existing &quot;man&quot; window if it exists, otherwise open a new one.
  if &amp;filetype != &quot;man&quot;
    let thiswin = winnr()
    exe &quot;norm! \&lt;C-W&gt;b&quot;
    if winnr() &gt; 1
      exe &quot;norm! &quot; . thiswin . &quot;\&lt;C-W&gt;w&quot;
      while 1
	if &amp;filetype == &quot;man&quot;
	  break
	endif
	exe &quot;norm! \&lt;C-W&gt;w&quot;
	if thiswin == winnr()
	  break
	endif
      endwhile
    endif
    if &amp;filetype != &quot;man&quot;
      if exists(&quot;g:ft_man_open_mode&quot;)
        if g:ft_man_open_mode == &quot;vert&quot;
          vnew
        elseif g:ft_man_open_mode == &quot;tab&quot;
          tabnew
        else
          new
        endif
      else
        new
      endif
      setl nonu fdc=0
    endif
  endif
  silent exec &quot;edit $HOME/&quot;.page.&quot;.&quot;.sect.&quot;~&quot;
  &quot; Avoid warning for editing the dummy file twice
  setl buftype=nofile noswapfile

  setl ma nonu nornu nofen
  silent exec &quot;norm 1GdG&quot;
  let unsetwidth = 0
  if empty($MANWIDTH)
    let $MANWIDTH = winwidth(0)
    let unsetwidth = 1
  endif

  &quot; Ensure Vim is not recursively invoked (man-db does this) when doing ctrl-[
  &quot; on a man page reference by unsetting MANPAGER.
  &quot; Some versions of env(1) do not support the '-u' option, and in such case
  &quot; we set MANPAGER=cat.
  if !exists('s:env_has_u')
    call system('env -u x true')
    let s:env_has_u = (v:shell_error == 0)
  endif
  let env_cmd = s:env_has_u ? 'env -u MANPAGER' : 'env MANPAGER=cat'
  let man_cmd = env_cmd . ' man ' . s:GetCmdArg(sect, page) . ' | col -b'
  silent exec &quot;r !&quot; . man_cmd

  if unsetwidth
    let $MANWIDTH = ''
  endif
  &quot; Remove blank lines from top and bottom.
  while getline(1) =~ '^\s*$'
    silent keepj norm ggdd
  endwhile
  while getline('$') =~ '^\s*$'
    silent keepj norm Gdd
  endwhile
  1
  setl ft=man nomod
  setl bufhidden=hide
  setl nobuflisted
  setl noma
endfunc

func &lt;SID&gt;PopPage()
  if s:man_tag_depth &gt; 0
    let s:man_tag_depth = s:man_tag_depth - 1
    exec &quot;let s:man_tag_buf=s:man_tag_buf_&quot;.s:man_tag_depth
    exec &quot;let s:man_tag_lin=s:man_tag_lin_&quot;.s:man_tag_depth
    exec &quot;let s:man_tag_col=s:man_tag_col_&quot;.s:man_tag_depth
    exec s:man_tag_buf.&quot;b&quot;
    exec s:man_tag_lin
    exec &quot;norm &quot;.s:man_tag_col.&quot;|&quot;
    exec &quot;unlet s:man_tag_buf_&quot;.s:man_tag_depth
    exec &quot;unlet s:man_tag_lin_&quot;.s:man_tag_depth
    exec &quot;unlet s:man_tag_col_&quot;.s:man_tag_depth
    unlet s:man_tag_buf s:man_tag_lin s:man_tag_col
  endif
endfunc

endif

&quot; vim: set sw=2 ts=8 noet:
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