Merge pull request #1147 from jwilm/scrollback

Scrollback

1 files changed, 11 insertions, 4 deletions

diff --git a/src/event_loop.rs b/src/event_loop.rs
index 18d48a52..d7d27243 100644
--- a/src/event_loop.rs
+++ b/src/event_loop.rs
@@ -255,6 +255,9 @@ impl<Io> EventLoop<Io>
         let mut processed = 0;
         let mut terminal = None;
 
+        // Flag to keep track if wakeup has already been sent
+        let mut send_wakeup = false;
+
         loop {
             match self.pty.read(&mut buf[..]) {
                 Ok(0) => break,
@@ -272,10 +275,14 @@ impl<Io> EventLoop<Io>
                     // Get reference to terminal. Lock is acquired on initial
                     // iteration and held until there's no bytes left to parse
                     // or we've reached MAX_READ.
-                    if terminal.is_none() {
+                    let terminal = if terminal.is_none() {
                         terminal = Some(self.terminal.lock());
-                    }
-                    let terminal = terminal.as_mut().unwrap();
+                        let terminal = terminal.as_mut().unwrap();
+                        send_wakeup = !terminal.dirty;
+                        terminal
+                    } else {
+                        terminal.as_mut().unwrap()
+                    };
 
                     // Run the parser
                     for byte in &buf[..got] {
@@ -301,7 +308,7 @@ impl<Io> EventLoop<Io>
 
         // Only request a draw if one hasn't already been requested.
         if let Some(mut terminal) = terminal {
-            if !terminal.dirty {
+            if send_wakeup {
                 self.display.notify();
                 terminal.dirty = true;
             }