3 files changed, 8 insertions, 8 deletions
diff --git a/src/run/builtin.rs b/src/run/builtin.rs
index 6f7cc5d..f3682f7 100644
--- a/src/run/builtin.rs
+++ b/src/run/builtin.rs
@@ -187,7 +187,7 @@ impl Builtin for _type {
         let session = session.lock().unwrap();
         for arg in args {
             if let Some((_, a)) = session.aliases.get(arg, AliasAge::MAX) {
-                stdout.write_all(&arg)?;
+                stdout.write_all(arg)?;
                 stdout.write_all(b" is aliased to ")?;
                 stdout.write_all(&a.unparsed)?;
                 stdout.write_all(b"\n")?;
@@ -385,7 +385,7 @@ impl Builtin for parse {
                 }
                 Err(e) => {
                     writeln!(stdout, "err {e:?} ")?;
-                    stdout.write_all(&c.remaining())?;
+                    stdout.write_all(c.remaining())?;
                 }
             }
         }
@@ -508,7 +508,7 @@ impl Builtin for alias {
                 }
                 Err(err) => {
                     writeln!(stdout, "alias: unparseable argument ({err:?}): ",)?;
-                    stdout.write_all(&arg)?;
+                    stdout.write_all(arg)?;
                     parse_fail = true;
                 }
             }
@@ -525,7 +525,7 @@ impl Builtin for alias {
                     if !a.is_empty() {
                         a.push(b' ');
                     }
-                    a.push_all(&b);
+                    a.push_all(b);
                     a
                 }),
                 parsed: alias_args,
@@ -995,7 +995,7 @@ impl Builtin for pish_theme {
                 stdout.write_all(b" ")?;
             }
             stdout.write_all(b"\n")?;
-            return Err(Error::Exit(-1));
+            Err(Error::Exit(-1))
         };
 
         if args.is_empty() {
@@ -1066,7 +1066,7 @@ mod dbg {
                     }
                     _ => {
                         stdout.write_all(b"debug: unknown option ")?;
-                        stdout.write_all(&arg)?;
+                        stdout.write_all(arg)?;
                     }
                 }
             }
diff --git a/src/run/mod.rs b/src/run/mod.rs
index c3ceb76..009954b 100644
--- a/src/run/mod.rs
+++ b/src/run/mod.rs
@@ -640,7 +640,7 @@ pub fn run(se: Arc<Mutex<Session>>, parsed: Ast<PreExpansion>) -> String {
 
     match result {
         Ok(_) => String::new(),
-        Err(e) => format!("{}", e.error_message()),
+        Err(e) => e.error_message(),
     }
 }
 
diff --git a/src/run/var/mod.rs b/src/run/var/mod.rs
index 1ccc195..57ff9e1 100644
--- a/src/run/var/mod.rs
+++ b/src/run/var/mod.rs
@@ -62,7 +62,7 @@ impl Vars {
         for var in vars {
             self.watched
                 .entry(var)
-                .or_insert_with(Vec::new)
+                .or_default()
                 .push(watch.weak());
         }
         watch