make the tokio pty backend actually work properly

1 files changed, 1 insertions, 0 deletions

diff --git a/src/pty.rs b/src/pty.rs
index 07d6b2c..986b216 100644
--- a/src/pty.rs
+++ b/src/pty.rs
@@ -16,6 +16,7 @@ pub trait Pty {
     where
         Self: Sized;
     fn pt(&self) -> &Self::Pt;
+    fn pt_mut(&mut self) -> &mut Self::Pt;
     fn pts(&self) -> Result<::std::fs::File>;
     fn resize(&self, size: &super::Size) -> Result<()>;
 }