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use core::fmt::{self, Display, Formatter};
#[cfg(feature = "std")]
use std::error::Error;

/// Error from the `regex` validator.
#[derive(Debug, Clone)]
pub struct RegexError;

impl Display for RegexError {
    #[inline]
    fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
        f.write_str("invalid format")
    }
}

#[cfg(feature = "std")]
impl Error for RegexError {}