awk - 在图案处连接线。不均匀的间隔

Question

如果我有这个...

6,
9,
12
"url": "https://www.url.com"
6,
9,
12
"url": "https://www.url.com"
13,
16
"url": "https://www.url.com"
"url": "https://www.url.com"
18
"url": "https://www.url.com"
"url": "https://www.url.com"
3,
6,
14
"url": "https://www.url.com"
"url": "https://www.url.com"
20
"url": "https://www.url.com"
74
"url": "https://www.url.com"

我如何才能以这种方式加入队伍...

6,9,12"url": "https://www.url.com"
6,9,12"url": "https://www.url.com"
13,16"url": "https://www.url.com"
"url": "https://www.url.com"
18"url": "https://www.url.com"
"url": "https://www.url.com"
3,6,14"url": "https://www.url.com"
"url": "https://www.url.com"
20"url": "https://www.url.com"
74"url": "https://www.url.com"

我尝试使用sed删除以数字开头的行上的换行符，但是它不起作用。我认为是因为线路随着工作而改变了？

sed '/^[0-9]/N;s/\n//'

我明白了...

6,9,
12"url": "https://www.url.com"
6,9,
12"url": "https://www.url.com"
13,16
"url": "https://www.url.com"
"url": "https://www.url.com"
18"url": "https://www.url.com"
"url": "https://www.url.com"
3,6,
14"url": "https://www.url.com"
"url": "https://www.url.com"
20"url": "https://www.url.com"
74"url": "https://www.url.com"

编辑:
感谢您的帮助和解释。
我选择了这个，因为它对我来说更容易理解。他们都工作了。 sed ':a;/https/!{N;ba};s/\n//g'

Answer 1

下面的代码应该工作:

sed ':a;/https/!{N;ba};s/\n//g'

本质上是一个while循环，只要输出的多行确实而不是包含https，它就会在一行之后追加一行；只要添加了一行包含https的行，就会放弃while循环(因为未执行b命令)，并且所有嵌入的换行\n都会被s命令删除。

更详细地讲，脚本(单引号之间)可以像这样重写:

:a        # label you can jump to with a t or b command
/https/!{ # if the line does not match "https" do what's in {…}:
    N     #   append the next line to the current one (putting "\n" in between)
    ba    #   branch to the line labelled as ":a"
}
s/\n//g   # change all newlines to empty strings (i.e. remove all newlines for the current multi-line)

相应的伪代码为

begin
while line does not contain "https" {
  append another line
}
remove all newlines