Use XML instead of YAML

Just FYI, in my experience SimpleXML uses significantly less memory when manipulating large amounts of structured data than basic PHP arrays. So, even setting aside export formats, if memory exhaustion is a recurring issue (eg. 🐛 Memory error after install Active and 🐛 Out of memory on main module page Active ), SimpleXML might be worth exploring.

Also, David is not wrong about Yaml's limitations on wrt/ large blobs of HTML.

However, if this were ever to be pursued, it'd be nice to make it pluggable. Personally, I much prefer Yaml's human-readability over JSON and XML.

YAML is one of the best options for managing configurations due to its lightweight and readable structure, which allows you to define processes efficiently without overloading memory. Its indentation-based format facilitates manual reading and editing, reducing complexity compared to other formats such as JSON or XML. In addition, its compatibility with multiple languages and frameworks makes it an ideal choice for configuration management in scalable environments.

could you provide us with some sample config yml which has erroneous data to check what improvement could be used