Fix key repeat escape code truncation issue

src/editor.rs

@@ -183,7 +183,8 @@ impl Editor {
         // Match escape sequence
         // --------------------------------------------------------------------
         let mut seq = [0; 4];
-        match br.read_exact(&mut seq) {
+        let mut seq_handle = br.take(4);
+        match seq_handle.read(&mut seq) {
             Ok(_) => (),
             Err(e) => {
                 if e.kind() != io::ErrorKind::UnexpectedEof {