Originally reported in eslint/eslint#18475.

With this config:

// eslint.config.js
export default [
  {
    files: ['**/*'],
    rules: {
      semi: 'error',
    },
  },
];

for a file named fail.txt, config-inspector reports that it is matched by 1 config item (the one in eslint.config.js).

Which is true, this config item does match this file, but files not matched by at least one config object with a pattern that doesn't end with /* or /** are effectively ignored as "unconfigured". So for this file, it would make more sense to report it as "not included or has been ignored".

Repro: https://stackblitz.com/edit/stackblitz-starters-99hktx

Flat config's matching & ignoring logic is here:

https://github.com/eslint/rewrite/blob/830424fd10f0dfe88ee4b1a14b74095db7654476/packages/config-array/src/config-array.js#L838-L1009