diff --git a/src/ffi/lua/buffer.rs b/src/ffi/lua/buffer.rs
index c7d4ec7..635b10a 100644
--- a/src/ffi/lua/buffer.rs
+++ b/src/ffi/lua/buffer.rs
@@ -12,10 +12,9 @@ impl LuaUserData for CodempBufferController {
 			Ok(format!("{:?}", this))
 		});
 
-		methods.add_method("send", |_, this, (change,): (CodempTextChange,)| {
-			this.send(change)?;
-			Ok(())
-		});
+		methods.add_method("send", |_, this, (change,): (CodempTextChange,)|
+			Ok(this.send(change)?)
+		);
 
 		methods.add_method(
 			"try_recv",
@@ -29,16 +28,12 @@ impl LuaUserData for CodempBufferController {
 			|_, this, ()| a_sync! { this => this.content().await? },
 		);
 
-		methods.add_method("clear_callback", |_, this, ()| {
-			this.clear_callback();
-			Ok(())
-		});
-		methods.add_method("callback", |_, this, (cb,): (LuaFunction,)| {
-			this.callback(move |controller: CodempBufferController| {
+		methods.add_method("clear_callback", |_, this, ()| Ok(this.clear_callback()));
+		methods.add_method("callback", |_, this, (cb,): (LuaFunction,)|
+			Ok(this.callback(move |controller: CodempBufferController|
 				super::ext::callback().invoke(cb.clone(), controller)
-			});
-			Ok(())
-		});
+			))
+		);
 	}
 }
 
diff --git a/src/ffi/lua/cursor.rs b/src/ffi/lua/cursor.rs
index 2e93fc8..40df670 100644
--- a/src/ffi/lua/cursor.rs
+++ b/src/ffi/lua/cursor.rs
@@ -13,8 +13,7 @@ impl LuaUserData for CodempCursorController {
 		});
 
 		methods.add_method("send", |_, this, (cursor,): (CodempCursor,)| {
-			this.send(cursor)?;
-			Ok(())
+			Ok(this.send(cursor)?)
 		});
 		methods.add_method(
 			"try_recv",
@@ -23,16 +22,12 @@ impl LuaUserData for CodempCursorController {
 		methods.add_method("recv", |_, this, ()| a_sync! { this => this.recv().await? });
 		methods.add_method("poll", |_, this, ()| a_sync! { this => this.poll().await? });
 
-		methods.add_method("clear_callback", |_, this, ()| {
-			this.clear_callback();
-			Ok(())
-		});
-		methods.add_method("callback", |_, this, (cb,): (LuaFunction,)| {
-			this.callback(move |controller: CodempCursorController| {
+		methods.add_method("clear_callback", |_, this, ()| Ok(this.clear_callback()));
+		methods.add_method("callback", |_, this, (cb,): (LuaFunction,)|
+			Ok(this.callback(move |controller: CodempCursorController|
 				super::ext::callback().invoke(cb.clone(), controller)
-			});
-			Ok(())
-		});
+			))
+		);
 	}
 }
 
diff --git a/src/ffi/lua/ext/a_sync.rs b/src/ffi/lua/ext/a_sync.rs
index 02c672b..2e10776 100644
--- a/src/ffi/lua/ext/a_sync.rs
+++ b/src/ffi/lua/ext/a_sync.rs
@@ -51,10 +51,7 @@ impl LuaUserData for Promise {
 		});
 		methods.add_method_mut("cancel", |_, this, ()| match this.0.take() {
 			None => Err(LuaError::runtime("Promise already awaited")),
-			Some(x) => {
-				x.abort();
-				Ok(())
-			}
+			Some(x) => Ok(x.abort()),
 		});
 		methods.add_method_mut("and_then", |_, this, (cb,): (LuaFunction,)| {
 			match this.0.take() {
diff --git a/src/ffi/lua/workspace.rs b/src/ffi/lua/workspace.rs
index 15167c9..5aa4b82 100644
--- a/src/ffi/lua/workspace.rs
+++ b/src/ffi/lua/workspace.rs
@@ -60,17 +60,15 @@ impl LuaUserData for CodempWorkspace {
 
 		methods.add_method("poll", |_, this, ()| a_sync! { this => this.poll().await? });
 
-		methods.add_method("callback", |_, this, (cb,): (LuaFunction,)| {
-			this.callback(move |controller: CodempWorkspace| {
+		methods.add_method("callback", |_, this, (cb,): (LuaFunction,)|
+			Ok(this.callback(move |controller: CodempWorkspace|
 				super::ext::callback().invoke(cb.clone(), controller)
-			});
-			Ok(())
-		});
+			))
+		);
 
-		methods.add_method("clear_callbacl", |_, this, ()| {
-			this.clear_callback();
-			Ok(())
-		});
+		methods.add_method("clear_callbacl", |_, this, ()|
+			Ok(this.clear_callback())
+		);
 	}
 
 	fn add_fields<F: LuaUserDataFields<Self>>(fields: &mut F) {