我有一个网址

postgres://some-url.com:23244/users-pool?sslmode=require

我基本上需要匹配//和:之间的所有内容。所以在本例中我需要some-url.com。我正在尝试使用这个正则表达式/(?<=\/\/)(.*?)(?=\:)/gm，它在在线regex工具上工作。但是当我尝试在TF上这样做时

regex("postgres://some-url.com:23244/users-pool?sslmode=require", "(?<=//)(.*?)(?=\:)")

我越来越

│
│   on <console-input> line 1:
│   (source code not available)
│
│  Error: Invalid escape sequence
│
│   on <console-input> line 1:
│   (source code not available)
│
│ The symbol "/" is not a valid escape sequence selector.
╵

╷
│ Error: Invalid escape sequence
│
│   on <console-input> line 1:
│   (source code not available)
│
│ The symbol "/" is not a valid escape sequence selector.```

How can I do this on Terraform? Appreciate the help