Update to latest line_discipline to handle EOF correctly

src/main.rs

@@ -42,17 +42,22 @@ impl Pty {
     }
 
     fn read_slave(&self, len: usize) -> Vec<u8> {
-        while !self.input_buffer.lock().contains(&b'\n') {
+        while self.input_buffer.lock().is_empty() {
             ipc::process_messages();
             let mut input_buffer = self.input_buffer.lock();
-            input_buffer.extend_from_slice(&self.line_discipline.lock().get_program_input());
+            let input = self.line_discipline.lock().get_program_input();
+            let Some(input) = input else {
+                continue;
+            };
+            if input.is_empty() {
+                return Vec::new();
+            }
+            input_buffer.extend_from_slice(&input);
         }
         let mut input_buffer = self.input_buffer.lock();
-        input_buffer.extend_from_slice(&self.line_discipline.lock().get_program_input());
+        input_buffer.extend_from_slice(&self.line_discipline.lock().get_program_input().unwrap_or_default());
-        let Some(line_end) = input_buffer.iter().position(|&x| x == b'\n') else {
+        let buf_len = input_buffer.len();
-            return Vec::new();
+        let rem_buf = input_buffer.split_off(usize::min(len, buf_len));
-        };
-        let rem_buf = input_buffer.split_off(usize::min(len, line_end + 1));
         std::mem::replace(&mut *input_buffer, rem_buf)
     }
 
@@ -63,7 +68,7 @@ impl Pty {
     fn curr_slave_poll(&self) -> PollEvents {
         self.input_buffer
             .lock()
-            .extend_from_slice(&self.line_discipline.lock().get_program_input());
+            .extend_from_slice(&self.line_discipline.lock().get_program_input().unwrap_or_default());
         let mut events = PollEvents::POLLOUT;
         if self.input_buffer.lock().contains(&b'\n') {
             events |= PollEvents::POLLIN;