- leading whitespace: "has leading whitespace"
- trailing whitespace: "has trailing whitespace"
- invalid chars: "must not contain an invalid char: %{invalid_chars}"
+ leading_whitespace: "has leading whitespace"
+ trailing_whitespace: "has trailing whitespace"
+ invalid_chars: "contains invalid chars"
+ invalid_url_chars: "must not contain an invalid char: %{invalid_url_chars}"