Print warning when run against an unsupported file #1473
Description
$ echo 'not json' > foo.json
$ ruff foo.json
$ echo $?
0
We might also consider returning a non-zero status code since the file isn't supported.
{{ message }}
$ echo 'not json' > foo.json
$ ruff foo.json
$ echo $?
0
We might also consider returning a non-zero status code since the file isn't supported.