I can't see a way to choose self-closing tags.
The default format of many partially-human readable xml files e.g. csproj files, is to use self-closing tags. If you round trip a file through XmlMarkupFormatter then they will become uglified.
I would appreciate an option to choose self-closing but ideally I would support changing the default to be self-closing because it produces shorter and more readable output and I have no use-case for the verbose form.
Here is my current work-around to wrap the XmlMarkupFormatter:
public class SelfClosingXmlMarkupFormatter : IMarkupFormatter
{
public string Text(ICharacterData text) =>
XmlMarkupFormatter.Instance.Text(text);
public string Comment(IComment comment) =>
XmlMarkupFormatter.Instance.Comment(comment);
public string Processing(IProcessingInstruction processing) =>
XmlMarkupFormatter.Instance.Processing(processing);
public string Doctype(IDocumentType doctype) =>
XmlMarkupFormatter.Instance.Doctype(doctype);
public string OpenTag(IElement element, bool selfClosing) =>
XmlMarkupFormatter.Instance.OpenTag(element, !(element.HasChildNodes || element.HasTextNodes()));
public string CloseTag(IElement element, bool selfClosing) =>
XmlMarkupFormatter.Instance.CloseTag(element, !(element.HasChildNodes || element.HasTextNodes()));
public string Attribute(IAttr attribute) =>
XmlMarkupFormatter.Instance.Attribute(attribute);
}
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