Support for YAML block scalars

[peterfigure]

Describe the problem you'd like to solve

Working on a DSL for github actions, would be really nice if a multiline string or list of strings gets rendered as a block scalar, eg: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun

It makes for much easier debugging & readability than \n separated strings

Describe the solution you'd like

https://yaml-multiline.info/ literal block scalars using the | symbol

Describe alternatives you've considered

No response

Additional context

No response

[charleskorn]

Hey @peterfigure, thanks for the suggestion. Just to clarify, are you asking that any multi-line string values are automatically emitted as block scalars?

If so, that should be pretty straightforward to add as a PR if you're keen:

• This is where emitting strings happens - it would need to detect if the string contains a newline character and choose a different style (ScalarStyle.LITERAL looks right)
• We should probably make this behaviour configurable, so you'd need to add an option to YamlConfiguration

[charleskorn]

Resolved by #247.