adapt write_term family, add handling for EOF actions.

src/prolog/read.rs

@@ -42,6 +42,11 @@ pub mod readline {
     }
 
     impl ReadlineStream {
+        pub fn new(pending_input: String) -> Self {
+            let rl = Editor::<()>::new();
+            ReadlineStream { rl, pending_input: Cursor::new(pending_input) }
+        }
+
         pub fn input_stream(pending_input: String) -> Stream {
             let mut rl = Editor::<()>::new();
             rl.bind_sequence(KeyPress::Tab, Cmd::Insert(1, "\t".to_string()));