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#[cfg(feature = "stderr_output")]
#[macro_export]
macro_rules! write_error 
{
    ($($arg:tt)*) => (
        eprintln!($($arg)*)
    )
}



#[cfg(not(feature = "stderr_output"))]
#[inline]
pub 
fn empty_func() { return; }

#[cfg(not(feature = "stderr_output"))]
#[macro_export]
macro_rules! write_error 
{
    ($($arg:tt)*) => (
        $crate::empty_func()
    )
}