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" Copyright 2011 The Go Authors. All rights reserved.
" Use of this source code is governed by a BSD-style
" license that can be found in the LICENSE file.
"
" godoc.vim: Vim command to see godoc.
if exists("g:loaded_godoc")
finish
endif
let g:loaded_godoc = 1
let s:buf_nr = -1
let s:last_word = ''
function! s:GodocView()
if !bufexists(s:buf_nr)
leftabove new
file `="[Godoc]"`
let s:buf_nr = bufnr('%')
elseif bufwinnr(s:buf_nr) == -1
leftabove split
execute s:buf_nr . 'buffer'
delete _
elseif bufwinnr(s:buf_nr) != bufwinnr('%')
execute bufwinnr(s:buf_nr) . 'wincmd w'
endif
setlocal filetype=godoc
setlocal bufhidden=delete
setlocal buftype=nofile
setlocal noswapfile
setlocal nobuflisted
setlocal modifiable
setlocal nocursorline
setlocal nocursorcolumn
setlocal iskeyword+=:
setlocal iskeyword-=-
nnoremap <buffer> <silent> K :Godoc<cr>
au BufHidden <buffer> call let <SID>buf_nr = -1
endfunction
function! s:GodocWord(word)
let word = a:word
silent! let content = system('godoc ' . word)
if v:shell_error || !len(content)
if len(s:last_word)
silent! let content = system('godoc ' . s:last_word.'/'.word)
if v:shell_error || !len(content)
echo 'No documentation found for "' . word . '".'
return
endif
let word = s:last_word.'/'.word
else
echo 'No documentation found for "' . word . '".'
return
endif
endif
let s:last_word = word
silent! call s:GodocView()
setlocal modifiable
silent! %d _
silent! put! =content
silent! normal gg
setlocal nomodifiable
setfiletype godoc
endfunction
function! s:Godoc(...)
let word = join(a:000, ' ')
if !len(word)
let word = expand('<cword>')
endif
let word = substitute(word, '[^a-zA-Z0-9\\/._~-]', '', 'g')
if !len(word)
return
endif
call s:GodocWord(word)
endfunction
command! -nargs=* -range -complete=customlist,go#complete#Package Godoc :call s:Godoc(<q-args>)
nnoremap <silent> <Plug>(godoc-keyword) :<C-u>call <SID>Godoc('')<CR>
" vim:ts=4:sw=4:et
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