Change XML output file's version to 1.1

What version are you using? 4.7.1 - But this applies to all versions

What did you do?

1. Have a file with an object like this: var foo = { "\b":42 };
2. Run eslint with the -f checkstyle flag

What happened? One of the errors is: <error line="1" column="18" severity="error" message="Missing space before value for key &apos;&#8;&apos;. (key-spacing)" source="eslint.rules.key-spacing" />

This XML is valid for version 1.1, but the XML header has the version set to 1.0, in which some character references like  are not valid.

What did you expect to happen?

The XML version on the output file should be 1.1

I think this might be related to https://github.com/eslint/eslint/issues/6673.

[alberto]

@eslint/eslint-tsc After having a look at this, we framed the discussion around a non-existent xml formatter. The actual formatters that use xml output are checkstyle, jslint-xml and junit. I am a bit more reluctant to version these according to xml version. I propose we revisit the decision taking this into account.

[alberto]

I’d vote to add a new formatter and leave the old one as is.