feat: simplify parens

src/alejandra_engine/src/rules/key_value.rs

@@ -55,6 +55,19 @@ pub(crate) fn rule(
 
     // peek: expr
     let child_expr = children.get_next().unwrap();
+    let child_expr =
+        if matches!(child_expr.kind(), rnix::SyntaxKind::NODE_PAREN) {
+            let mut children: Vec<rnix::SyntaxElement> =
+                child_expr.as_node().unwrap().children_with_tokens().collect();
+
+            if children.len() == 3 {
+                children.swap_remove(1)
+            } else {
+                child_expr
+            }
+        } else {
+            child_expr
+        };
 
     // peek: /**/
     let mut comments_after = std::collections::LinkedList::new();

src/alejandra_engine/tests/cases/key_value/in

@@ -1,5 +1,7 @@
 rec /**/ {
 
+  a = (((4)));
+
   a = {a     =     1     ;};
 
 

src/alejandra_engine/tests/cases/key_value/out

@@ -1,6 +1,8 @@
 rec
 /**/
 {
+  a = 4;
+
   a = {a = 1;};
 
   b = {