[英]Regex in Vim- inserting blank line before numbered lines
I have following text: 我有以下文字:
Title line
1. First list
First line
Second line
2. Second list
Oranges
Mangoes
3. Stationary
Pen
Pencils
Etc
I want to add a blank line before every numbered line, so that above text looks like following: 我想在每个编号行之前添加一个空行,以便上面的文字如下所示:
Title line
1. First list
First line
Second line
2. Second list
Oranges
Mangoes
3. Stationary
Pen
Pencils
Etc
I tried following code but it is not working: 我尝试了以下代码,但它无法正常工作:
%s/^(\d)/\r\1/g
and 和
%s/(^\d)/\r\1/g
and 和
% s/^([0-9])/\\r\\1/gc
% s/^([0-9])/\\r\\1/gc
Where is the problem and how can this be solved. 问题在哪里以及如何解决。 Thanks for your help. 谢谢你的帮助。
You should escape parentheses within a VIM syntax in order to mean it a special cluster: 您应该在VIM语法中转义括号,以表示它是一个特殊的集群:
%s/^\(\d\)/\r\1/g
Or use an end of match zero-width assertion ( \\ze
) token: 或者使用匹配结束零宽度断言 ( \\ze
)令牌:
%s/^\ze\d/\r
To use capture group ()
without having to escape them, use \\v
very magic (See :h /magic
) 要使用捕获组()
而不必转义它们,请使用\\v
very magic(参见:h /magic
)
:%s/\v^(\d)/\r\1/
Note that g
flag is redundant as there can be only one match at beginning of line 请注意, g
标志是多余的,因为在行的开头只能有一个匹配
As entire matched string is needed in replacement section, one can simply use &
or \\0
without needing explicit capture group 由于替换部分需要整个匹配的字符串,因此可以简单地使用&
或\\0
而无需显式捕获组
:%s/^\d/\r&/
:g/^\d/norm O
The g
command allows filtering lines and executing command on those lines, like norm O
to open new line above. g
命令允许过滤行并在这些行上执行命令,如norm O
打开上面的新行。 Default range is entire file, so %
is not needed 默认范围是整个文件,因此不需要%
With substitute command, this would be :g/^\\d/s/^/\\r/
使用substitute命令,这将是:g/^\\d/s/^/\\r/
See :h :g
and :h ex-cmd-index
for complete list of commands to use with :g
请参阅:h :g
和:h ex-cmd-index
以获取要使用的命令的完整列表:g
You can use the global command, :g
to execute an empty :put
on each line before the matching number, ^\\d
. 你可以使用全局命令, :g
来执行一个空:put
在匹配的数字之前:put
每一行, ^\\d
。
:g/^\d/pu!_
Note: Using the blackhole register, "_
, combined with :put
to give us the empty line. 注意:使用黑洞寄存器, "_
,结合:put
给我们空行。
For more help see: 有关更多帮助请参阅:
:h :g
:h /\d
:h :put
:h quote_
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