Comment by captainmuon

I'm not a fan of YAML either, but I think you should not generate YAML files if you can avoid it. All YAML you encounter should be hand-written, so this problem should not occur.

I read "YAML is a superset of JSON" not as a logical statement, but as instructions to humans writing YAML. If you know JSON, you can use that syntax to write YAML. Just like, if you know JavaScript or Python (or to some extent PHP) object syntax, you can write JSON.

If you get a parse error, no biggie, you Alt+Tab to the editor where you are editing the config file and correct it. It is not like you are serving this over the net to some other program.