Vim delete blank lines | 易学教程

问题

What command can I run to remove blank lines in Vim?

回答1:

:g/^$/d

:g will execute a command on lines which match a regex. The regex is 'blank line' and the command is :d (delete)

回答2:

Found it, it's:

g/^\s*$/d

Source: Power of g at vim wikia

Brief explanation of :g
:[range]g/pattern/cmd
This acts on the specified [range] (default whole file), by executing the Ex command cmd for each line matching pattern (an Ex command is one starting with a colon such as :d for delete). Before executing cmd, "." is set to the current line.

回答3:

:v/./d

:g/^$/d

:%!cat -s

回答4:

The following can be used to remove only multi blank lines (reduce them to a single blank line) and leaving single blank lines intact:

:g/^\_$\n\_^$/d

回答5:

how to remove all the blanks lines
```
:%s,\n\n,^M,g
```
(do this multiple times util all the empty lines went gone)
how to remove all the blanks lines leaving SINGLE empty line
```
:%s,\n\n\n,^M^M,g
```
(do this multiple times)
how to remove all the blanks lines leaving TWO empty lines AT MAXIMUM,
```
:%s,\n\n\n\n,^M^M^M,g
```
(do this multiple times)

in order to input ^M, I have to control-Q and control-M in windows

回答6:

How about:

:g/^[ \t]*$/d

回答7:

work with perl in vim:

:%!perl -pi -e s/^\s*$//g

回答8:

This works for me

:%s/^\s*$\n//gc

回答9:

This function only remove two or more blank lines, put the lines below in your vimrc, then use \d to call function

fun! DelBlank()
   let _s=@/
   let l = line(".")
   let c = col(".")
   :g/^\n\{2,}/d
   let @/=_s
   call cursor(l, c)
endfun
map <special> <leader>d :keepjumps call DelBlank()<cr>

回答10:

I tried a few of the answers on this page, but a lot of them didn't work for me. Maybe because I'm using Vim on Windows 7 (don't mock, just have pity on me :p)?

Here's the easiest one that I found that works on Vim in Windows 7:

:v/\S/d

Here's a longer answer on the Vim Wikia: http://vim.wikia.com/wiki/Remove_unwanted_empty_lines

回答11:

:g/^\s*$/d
^ begin of a line
\s* at least 0 spaces and as many as possible (greedy)
$ end of a line

paste

:command -range=% DBL :<line1>,<line2>g/^\s*$/d

in your .vimrc,then restart your vim. if you use command :5,12DBL it will delete all blank lines between 5th row and 12th row. I think my answer is the best answer!

回答12:

Press delete key in insert mode to remove blank lines.

回答13:

If something has double linespaced your text then this command will remove the double spacing and merge pre-existing repeating blank lines into a single blank line. It uses a temporary delimiter of ^^^ at the start of a line so if this clashes with your content choose something else. Lines containing only whitespace are treated as blank.

%s/^\s*\n\n\+/^^^\r/g | g/^\s*$/d | %s/^^^^.*

回答14:

This worked for me:

:%s/^[^a-zA-Z0-9]$\n//ig

It basically deletes all the lines that don't have a number or letter. Since all the items in my list had letters, it deleted all the blank lines.

来源：https://stackoverflow.com/questions/706076/vim-delete-blank-lines

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