add EMIT_NEWLINE to add newlines to readline input only after query terms begin to be read (#1074, #1897)

src/machine/system_calls.rs

@@ -5797,6 +5797,7 @@ impl Machine {
     pub(crate) fn read_query_term(&mut self) -> CallResult {
         self.user_input.reset();
 
+        set_emit_newline(true);
         set_prompt(true);
         // let result = self.machine_st.read_term(self.user_input, &mut self.indices);
         let result = self.machine_st.read_term_from_user_input(self.user_input, &mut self.indices);