Fix external printer don't print until key press (#840)

src/engine.rs

@@ -718,6 +718,13 @@ impl Reedline {
 
             let mut latest_resize = None;
             loop {
+                // There could be multiple events queued up!
+                // pasting text, resizes, blocking this thread (e.g. during debugging)
+                // We should be able to handle all of them as quickly as possible without causing unnecessary output steps.
+                if !event::poll(Duration::from_millis(POLL_WAIT))? {
+                    break;
+                }
+
                 match event::read()? {
                     Event::Resize(x, y) => {
                         latest_resize = Some((x, y));
@@ -746,13 +753,6 @@ impl Reedline {
                         }
                     }
                 }
-
-                // There could be multiple events queued up!
-                // pasting text, resizes, blocking this thread (e.g. during debugging)
-                // We should be able to handle all of them as quickly as possible without causing unnecessary output steps.
-                if !event::poll(Duration::from_millis(POLL_WAIT))? {
-                    break;
-                }
             }
 
             if let Some((x, y)) = latest_resize {