update main.rs

encoding/src/main.rs

@@ -10,6 +10,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let d_china = GBK.decode(&h_china, DecoderTrap::Strict)?;
 
+    println!("Encoding name: {}, whatwg name: {}", GBK.name(), GBK.whatwg_name().unwrap_or("None"));
     println!("{:?}", h_china);
     println!("{:?}", d_china);