scp経由のファイル保存を非同期化

scp経由でファイルを編集している時の保存を非同期化する

依存

• skywind3000/asyncrun.vim

コード

.vimrc に以下を記述

" inspired by https://github.com/skywind3000/asyncrun.vim/wiki/Get-netrw-using-asyncrun-to-save-remote-files
" required: skywind3000/asyncrun.vim
fu! s:AsyncSaveRemoteFile(...) abort
  let l:tmpfile = tempname()
  sil exe 'w! '.fnameescape(v:cmdarg).' '.fnameescape(tmpfile)

  let curbufname = expand('%')
  let scpurm = '^scp://\([^/#:]\+\)\%([#:]\(\d\+\)\)\=/\(.*\)$'
  let machine = substitute(curbufname,scpurm,'\1','')
  let port = substitute(curbufname,scpurm,'\2','')
  let fname = substitute(curbufname,scpurm,'\3','')
  if port != ''
    let scpcmd = 'scp -P '.shellescape(port)
  else
    let scpcmd = 'scp'
  endif
  let escaped_tmpfile = shellescape(tmpfile, 1)
  let escaped_fname = shellescape(machine.":".fname, 1)
  let bufnr = expand('<abuf>')+ 0
  call asyncrun#run(
    \ '',
    \ { 'post': 'call delete('.escaped_tmpfile.')|call setbufvar('.bufnr.',"&modified",0)|echo "Saved. '.curbufname.'"' },
    \ scpcmd.' '.escaped_tmpfile.' '.escaped_fname)
endfu
com! -range=% -nargs=* AsyncSaveRemoteFile call s:AsyncSaveRemoteFile(<f-args>)

fu! SetupAsyncSaveRemoteFile()
  " disable Netrw's BufWriteCmd
  au! Network BufWriteCmd scp://*
  aug SetAsyncSaveSCP
    au!
    au BufWriteCmd scp://* exe "sil doau BufWritePre ".fnameescape(expand("<amatch>"))|exe "AsyncSaveRemoteFile ".fnameescape(expand("<amatch>"))|exe "sil doau BufWritePost ".fnameescape(expand("<amatch>"))
  aug END
endfu

aug AsyncSaveRemoteFile
  au!
  au VimEnter * call SetupAsyncSaveRemoteFile()
aug END