yq -P changed behavior in v4.32.x

[marcosbc]

Describe the bug

We are seeing an issue where yq in its versions v4.32.x changed its behavior with the -P flag, and now is not able to properly format a YAML file with the pretty formatting.

Version of yq: 4.32.1 and forward
Operating system: Tested on mac and linux
Installed via: binary release

Input Yaml

test.json:

{
  "foo": "bar"
}

Command

yq -P test.json

Actual behavior

This behavior can be observed in yq v4.32.1 and later versions:

{
  "foo": "bar"
}

Expected behavior

This behavior can be observed in yq v4.31.2 and previous versions:

foo: bar

Additional context

We use yq -P to convert a JSON-formatted file to YAML syntax.

[marcosbc]

Just noticed that this looks like a duplicate bug report to #1608, so closing this. Sorry for the noise!