xref: /vim-8.2.3635/runtime/ftplugin/man.vim (revision bb76f24a)
1" Vim filetype plugin file
2" Language:	man
3" Maintainer:	SungHyun Nam <[email protected]>
4" Last Change: 	2016 Jun 20
5
6" To make the ":Man" command available before editing a manual page, source
7" this script from your startup vimrc file.
8
9" If 'filetype' isn't "man", we must have been called to only define ":Man".
10if &filetype == "man"
11
12  " Only do this when not done yet for this buffer
13  if exists("b:did_ftplugin")
14    finish
15  endif
16  let b:did_ftplugin = 1
17
18  " Ensure Vim is not recursively invoked (man-db does this)
19  " when doing ctrl-[ on a man page reference.
20  if exists("$MANPAGER")
21    let $MANPAGER = ""
22  endif
23
24  " allow dot and dash in manual page name.
25  setlocal iskeyword+=\.,-
26
27  " Add mappings, unless the user didn't want this.
28  if !exists("no_plugin_maps") && !exists("no_man_maps")
29    if !hasmapto('<Plug>ManBS')
30      nmap <buffer> <LocalLeader>h <Plug>ManBS
31    endif
32    nnoremap <buffer> <Plug>ManBS :%s/.\b//g<CR>:setl nomod<CR>''
33
34    nnoremap <buffer> <c-]> :call <SID>PreGetPage(v:count)<CR>
35    nnoremap <buffer> <c-t> :call <SID>PopPage()<CR>
36    nnoremap <buffer> <silent> q :q<CR>
37  endif
38
39  if exists('g:ft_man_folding_enable') && (g:ft_man_folding_enable == 1)
40    setlocal foldmethod=indent foldnestmax=1 foldenable
41  endif
42
43  let b:undo_ftplugin = "setlocal iskeyword<"
44
45endif
46
47if exists(":Man") != 2
48  com -nargs=+ Man call s:GetPage(<f-args>)
49  nmap <Leader>K :call <SID>PreGetPage(0)<CR>
50endif
51
52" Define functions only once.
53if !exists("s:man_tag_depth")
54
55let s:man_tag_depth = 0
56
57let s:man_sect_arg = ""
58let s:man_find_arg = "-w"
59try
60  if !has("win32") && $OSTYPE !~ 'cygwin\|linux' && system('uname -s') =~ "SunOS" && system('uname -r') =~ "^5"
61    let s:man_sect_arg = "-s"
62    let s:man_find_arg = "-l"
63  endif
64catch /E145:/
65  " Ignore the error in restricted mode
66endtry
67
68func <SID>PreGetPage(cnt)
69  if a:cnt == 0
70    let old_isk = &iskeyword
71    if &ft == 'man'
72      setl iskeyword+=(,)
73    endif
74    let str = expand("<cword>")
75    let &l:iskeyword = old_isk
76    let page = substitute(str, '(*\(\k\+\).*', '\1', '')
77    let sect = substitute(str, '\(\k\+\)(\([^()]*\)).*', '\2', '')
78    if match(sect, '^[0-9 ]\+$') == -1
79      let sect = ""
80    endif
81    if sect == page
82      let sect = ""
83    endif
84  else
85    let sect = a:cnt
86    let page = expand("<cword>")
87  endif
88  call s:GetPage(sect, page)
89endfunc
90
91func <SID>GetCmdArg(sect, page)
92  if a:sect == ''
93    return a:page
94  endif
95  return s:man_sect_arg.' '.a:sect.' '.a:page
96endfunc
97
98func <SID>FindPage(sect, page)
99  let where = system("/usr/bin/man ".s:man_find_arg.' '.s:GetCmdArg(a:sect, a:page))
100  if where !~ "^/"
101    if matchstr(where, " [^ ]*$") !~ "^ /"
102      return 0
103    endif
104  endif
105  return 1
106endfunc
107
108func <SID>GetPage(...)
109  if a:0 >= 2
110    let sect = a:1
111    let page = a:2
112  elseif a:0 >= 1
113    let sect = ""
114    let page = a:1
115  else
116    return
117  endif
118
119  " To support:	    nmap K :Man <cword>
120  if page == '<cword>'
121    let page = expand('<cword>')
122  endif
123
124  if sect != "" && s:FindPage(sect, page) == 0
125    let sect = ""
126  endif
127  if s:FindPage(sect, page) == 0
128    echo "\nCannot find a '".page."'."
129    return
130  endif
131  exec "let s:man_tag_buf_".s:man_tag_depth." = ".bufnr("%")
132  exec "let s:man_tag_lin_".s:man_tag_depth." = ".line(".")
133  exec "let s:man_tag_col_".s:man_tag_depth." = ".col(".")
134  let s:man_tag_depth = s:man_tag_depth + 1
135
136  " Use an existing "man" window if it exists, otherwise open a new one.
137  if &filetype != "man"
138    let thiswin = winnr()
139    exe "norm! \<C-W>b"
140    if winnr() > 1
141      exe "norm! " . thiswin . "\<C-W>w"
142      while 1
143	if &filetype == "man"
144	  break
145	endif
146	exe "norm! \<C-W>w"
147	if thiswin == winnr()
148	  break
149	endif
150      endwhile
151    endif
152    if &filetype != "man"
153      if exists("g:ft_man_open_mode")
154        if g:ft_man_open_mode == "vert"
155          vnew
156        elseif g:ft_man_open_mode == "tab"
157          tabnew
158        else
159          new
160        endif
161      else
162        new
163      endif
164      setl nonu fdc=0
165    endif
166  endif
167  silent exec "edit $HOME/".page.".".sect."~"
168  " Avoid warning for editing the dummy file twice
169  setl buftype=nofile noswapfile
170
171  setl ma nonu nornu nofen
172  silent exec "norm 1GdG"
173  let unsetwidth = 0
174  if empty($MANWIDTH)
175    let $MANWIDTH = winwidth(0)
176    let unsetwidth = 1
177  endif
178  silent exec "r!/usr/bin/man ".s:GetCmdArg(sect, page)." | col -b"
179  if unsetwidth
180    let $MANWIDTH = ''
181  endif
182  " Remove blank lines from top and bottom.
183  while getline(1) =~ '^\s*$'
184    silent keepj norm ggdd
185  endwhile
186  while getline('$') =~ '^\s*$'
187    silent keepj norm Gdd
188  endwhile
189  1
190  setl ft=man nomod
191  setl bufhidden=hide
192  setl nobuflisted
193  setl noma
194endfunc
195
196func <SID>PopPage()
197  if s:man_tag_depth > 0
198    let s:man_tag_depth = s:man_tag_depth - 1
199    exec "let s:man_tag_buf=s:man_tag_buf_".s:man_tag_depth
200    exec "let s:man_tag_lin=s:man_tag_lin_".s:man_tag_depth
201    exec "let s:man_tag_col=s:man_tag_col_".s:man_tag_depth
202    exec s:man_tag_buf."b"
203    exec s:man_tag_lin
204    exec "norm ".s:man_tag_col."|"
205    exec "unlet s:man_tag_buf_".s:man_tag_depth
206    exec "unlet s:man_tag_lin_".s:man_tag_depth
207    exec "unlet s:man_tag_col_".s:man_tag_depth
208    unlet s:man_tag_buf s:man_tag_lin s:man_tag_col
209  endif
210endfunc
211
212endif
213
214" vim: set sw=2 ts=8 noet:
215