Vim: 如何删除空行中的空格？

Question

如何使用vim检测包含空格的空行并删除空格？

比如我用⎵表示空格：

def⎵function(foo):
⎵⎵⎵⎵print(foo) 
⎵⎵
⎵
function(1)

是否有 vim 命令将上面的代码转换为下面的代码？

def⎵function(foo):
⎵⎵⎵⎵print(foo) 


function(1)

Answer 1

:g/^\s\+$/s/\s\+//

解释：

g — execute the command globally (for all lines)
/^\s\+$/ — search lines that contain only whitespaces
s/\s\+// — for every found line execute this
           search and replace command:
           search whitespaces and replace with an empty string.

可以简化为

:%s/^\s\+$//

% — execute for all lines
s/^\s\+$// — search and replace command:
             search lines that only have whitespaces
             and replace with an empty string.

Answer 2

我有一个功能可以解决这个问题并保持你的光标位置

if !exists('*StripTrailingWhitespace')
    function! StripTrailingWhitespace()
        if !&binary && &filetype != 'diff'
            let b:win_view = winsaveview()
            silent! keepjumps keeppatterns %s/\s\+$//e
            call winrestview(b:win_view)
        endif
    endfunction
endif
command! Cls call StripTrailingWhitespace()
cnoreabbrev cls Cls
cnoreabbrev StripTrailingSpace Cls
nnoremap <Leader>s :call StripTrailingWhitespace()

您可以使用命令 :cls 或快捷方式 <leader>s。其实你可以改变它以满足你的需要。

Vim: 如何删除空行中的空格？

Vim: how to delete whitespace in blank lines?

vi

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