Comments in lists are handled differently on Linux and Windows, when using retain_line_breaks_single

[kiraacorsac]

I'm using the same .ymlfmt file on both platforms. I am using fresh installation via $ go install github.com/google/yamlfmt/cmd/yamlfmt@latest on both platforms.

formatter:
  type: basic
  retain_line_breaks_single: true # retain_line_breaks also triggers this bug

This results in the following .yaml file being formatted differently

nav:
  - Home:
      - Welcome: index.md
      - Back to Documentation Index: index.md
    # - Download Now: index.md
  - Troubleshooting:
      - Support: troubleshooting/support.md
      - FAQ: troubleshooting/faq.md

On windows the file stays unchanged.

On linux, the file gets formatted like this:

nav:
  - Home:
      - Welcome: index.md
      - Back to Documentation Index: index.md
        # - Download Now (Superhive): index.md
  - Troubleshooting:
      - Support: troubleshooting/support.md
      - FAQ: troubleshooting/faq.md

[kiraacorsac]

I assume this is related to #198, but the behavior is slightly different (only related to this flag, does not resolve by rolling back to older version)

[braydonk]

This is likely unfixable until I move off the existing yaml library because of this hotfix line that is necessary for retain_line_breaks to work.