error: Long names must be ASCII
 --> tests/ui/bad-long-names/bad-long-names.rs:6:5
  |
6 |     привет: bool,
  |     ^^^^^^

error: Long names may only contain lowercase letters, digits, and dashes
 --> tests/ui/bad-long-names/bad-long-names.rs:9:5
  |
9 |     XMLHTTPRequest: bool,
  |     ^^^^^^^^^^^^^^

error: Long names may only contain lowercase letters, digits, and dashes
  --> tests/ui/bad-long-names/bad-long-names.rs:10:27
   |
10 |     #[argh(switch, long = "invalid_character")]
   |                           ^^^^^^^^^^^^^^^^^^^
