It should be cool if we could have an utility method validate which waits a String content of an editorconfig and throws ParsingException when this content is not well formatted:

public class  EditorConfig {

....
  public void validate(String editorConfigContent) throws ParsingException {
    // here parse editorConfigContent and throws ParsingException  with line/column, offset info
  }
}

Here a sample with miss of close of [ for section names:

[*]
charset = utf-8

[*.md // <- here there is an error because section is not closed

The exception ParsingException should contains offset and line/column info where there is an error.

With this utility method validate, any IDE could support validation with marker.

Many thanks!