vault policy read differs from vault policy fmt

[Kloppi313]

Describe the bug
When you want to get an actual policy to edit, you export it via
vault policy read POLICYNAME > FILE

But the format command makes changes to FILE:

cp FILE FILE_FMT
vault policy fmt FILE_FMT
diff FILE FILE_FMT

In my case fmt adds linebreaks.

To Reproduce
Steps to reproduce the behavior:

1. See description

Expected behavior
vault policy fmt
should not make changes to the output of
vault policy read

I guess running the read commando should pipe the output also through fmt and it would be fine

Environment:

• Vault Server Version (retrieve with vault status): 1.18.3
• Vault CLI Version (retrieve with vault version): 1.18.3
• Server Operating System/Architecture: Ubuntu 22

Vault server configuration file(s):

should not be necessary

Additional context
Add any other context about the problem here.