Vim delete blank lines

Question

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

Answer 1

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.

Answer 2

:g/^$/d

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

Answer 3

: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!

Answer 4

How about:

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

Answer 5

1. how to remove all the blanks lines

   :%s,\n\n,^M,g
   

   (do this multiple times util all the empty lines went gone)

2. how to remove all the blanks lines leaving SINGLE empty line

   :%s,\n\n\n,^M^M,g
   

   (do this multiple times)

3. 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

Answer 6

Press delete key in insert mode to remove blank lines.