" See:
" https://raw.githubusercontent.com/Shougo/shougo-s-github/master/vim/rc/encoding.rc.vim
" The automatic recognition of the character code.
" Setting of the encoding to use for a save and reading.
" Make it normal in UTF-8 in Unix.
if has('vim_starting')
  set encoding=utf-8
endif

" Setting of terminal encoding."{{{
if !has('gui_running')
  if &term ==# 'win32' &&
        \ (v:version < 703 || (v:version == 703 && has('patch814')))
    " Setting when use the non-GUI Japanese console.

    " Garbled unless set this.
    set termencoding=cp932
    " Japanese input changes itself unless set this.  Be careful because the
    " automatic recognition of the character code is not possible!
    set encoding=japan
  else
    if $ENV_ACCESS ==# 'linux'
      set termencoding=euc-jp
    elseif $ENV_ACCESS ==# 'colinux'
      set termencoding=utf-8
    else  " fallback
      set termencoding=  " same as 'encoding'
    endif
  endif
elseif IsWindows()
  " For system.
  set termencoding=cp932
endif
" }}}

" The automatic recognition of the character code."{{{
if !exists('did_encoding_settings') && has('iconv')
  let s:enc_euc = 'euc-jp'
  let s:enc_jis = 'iso-2022-jp'

  " Does iconv support JIS X 0213?
  if iconv("\x87\x64\x87\x6a", 'cp932', 'euc-jisx0213') ==# "\xad\xc5\xad\xcb"
    let s:enc_euc = 'euc-jisx0213,euc-jp'
    let s:enc_jis = 'iso-2022-jp-3'
  endif

  " Build encodings.
  let &fileencodings = 'ucs-bom'
  if &encoding !=# 'utf-8'
    let &fileencodings .= ',' . 'ucs-2le'
    let &fileencodings .= ',' . 'ucs-2'
  endif
  let &fileencodings .= ',' . s:enc_jis
  let &fileencodings .= ',' . 'utf-8'

  if &encoding ==# 'utf-8'
    let &fileencodings .= ',' . s:enc_euc
    let &fileencodings .= ',' . 'cp932'
  elseif &encoding =~# '^euc-\%(jp\|jisx0213\)$'
    let &encoding = s:enc_euc
    let &fileencodings .= ',' . 'cp932'
    let &fileencodings .= ',' . &encoding
  else  " cp932
    let &fileencodings .= ',' . s:enc_euc
    let &fileencodings .= ',' . &encoding
  endif
  let &fileencodings .= ',' . 'cp20932'

  unlet s:enc_euc
  unlet s:enc_jis

  let did_encoding_settings = 1
endif
" 2.2. END}}}

if has('kaoriya')
  set fileencodings=guess
endif

" When do not include Japanese, use encoding for fileencoding.
function! g:ReCheck_FENC() "{{{
  let is_multi_byte = search("[^\x01-\x7e]", 'n', 100, 100)
  if &fileencoding =~# 'iso-2022-jp' && !is_multi_byte
    let &fileencoding = &encoding
  endif
endfunction"}}}

Autocmd BufReadPost * call g:ReCheck_FENC()

" Default fileformat.
set fileformat=unix
" Automatic recognition of a new line cord.
set fileformats=unix,dos,mac
set ambiwidth=double

" Command group opening with a specific character code again."{{{
" In particular effective when I am garbled in a terminal.
" Open in UTF-8 again.
command! -bang -bar -complete=file -nargs=? Utf8
      \ edit<bang> ++enc=utf-8 <args>
" Open in iso-2022-jp again.
command! -bang -bar -complete=file -nargs=? Iso2022jp
      \ edit<bang> ++enc=iso-2022-jp <args>
" Open in Shift_JIS again.
command! -bang -bar -complete=file -nargs=? Cp932
      \ edit<bang> ++enc=cp932 <args>
" Open in EUC-jp again.
command! -bang -bar -complete=file -nargs=? Euc
      \ edit<bang> ++enc=euc-jp <args>
" Open in UTF-16 again.
command! -bang -bar -complete=file -nargs=? Utf16
      \ edit<bang> ++enc=ucs-2le <args>
" Open in UTF-16BE again.
command! -bang -bar -complete=file -nargs=? Utf16be
      \ edit<bang> ++enc=ucs-2 <args>

" Aliases.
command! -bang -bar -complete=file -nargs=? Jis  Iso2022jp<bang> <args>
command! -bang -bar -complete=file -nargs=? Sjis  Cp932<bang> <args>
command! -bang -bar -complete=file -nargs=? Unicode Utf16<bang> <args>
" }}}

" Tried to make a file note version."{{{
" Don't save it because dangerous.
command! WUtf8 setlocal fenc=utf-8
command! WIso2022jp setlocal fenc=iso-2022-jp
command! WCp932 setlocal fenc=cp932
command! WEuc setlocal fenc=euc-jp
command! WUtf16 setlocal fenc=ucs-2le
command! WUtf16be setlocal fenc=ucs-2
" Aliases.
command! WJis  WIso2022jp
command! WSjis  WCp932
command! WUnicode WUtf16
" }}}

" Appoint a line feed."{{{
command! -bang -complete=file -nargs=? WUnix
      \ write<bang> ++fileformat=unix <args> | edit <args>
command! -bang -complete=file -nargs=? WDos
      \ write<bang> ++fileformat=dos <args> | edit <args>
command! -bang -complete=file -nargs=? WMac
      \ write<bang> ++fileformat=mac <args> | edit <args>
" }}}

if has('multi_byte_ime')
  set iminsert=0 imsearch=0
endif