在预览窗口中打开新缓冲区时占用Vim预览窗口的自动关闭缓冲区

Question

我经常使用Unite.vim来滚动浏览Vim中的文件列表。有时候我会使用Unite的auto-preview功能在预览窗口中打开每个文件，当我滚动它时。如果我滚动浏览大量文件，这会给我留下一堆我不需要的开放缓冲区。在预览窗口中打开新缓冲区时，如何使当前占用预览窗口的缓冲区关闭？

Answer 1

我能够翻翻团结源，复制预览功能，并使我直接需要此功能的修改做了预览窗口的垂直开放来解决这个问题：

function! s:preview.func(candidate) 
    let buflisted = buflisted(
     \ unite#util#escape_file_searching(
     \ a:candidate.action__path)) 
    if filereadable(a:candidate.action__path) 
    " If execute this command, unite.vim will be affected by events. 
    noautocmd silent execute 'vert pedit!' " added vert 
      \ fnameescape(a:candidate.action__path) 
    call SetWidthToHalfScreen() " added to resize preview window 
    let prev_winnr = winnr('#') 
    let winnr = winnr() 
    wincmd P 
    doautoall BufRead 
    setlocal nomodified 
    execute prev_winnr.'wincmd w' 
    execute winnr.'wincmd w' 
    endif 
    if !buflisted 
    call unite#add_previewed_buffer_list(
     \ bufnr(unite#util#escape_file_searching(
     \  a:candidate.action__path))) 
    endif 
endfunction 
call unite#custom#action("openable", "preview", s:preview) 
call unite#custom#action("file", "preview", s:preview) 

function! SetWidthToHalfScreen() 
    let diff = 100 - winwidth(winnr()) 
    exec "vert resize " . (diff > 0 ? '+' : '-') . abs(diff) 
endfunction