From 7225aac2a403fd5b7b908e1cfa3470e17f751cf8 Mon Sep 17 00:00:00 2001
From: GreasySlug <9619abgoni@gmail.com>
Date: Wed, 5 Oct 2022 09:10:54 +0900
Subject: [PATCH] Update: structurally displayed

---
 compiler/erg_parser/ast.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/compiler/erg_parser/ast.rs b/compiler/erg_parser/ast.rs
index 2b0d12b1..af1a3e14 100644
--- a/compiler/erg_parser/ast.rs
+++ b/compiler/erg_parser/ast.rs
@@ -775,8 +775,10 @@ pub struct NormalSet {
 }
 
 impl NestedDisplay for NormalSet {
-    fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
-        write!(f, "{{{}}}", self.elems)
+    fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, level: usize) -> fmt::Result {
+        writeln!(f, "{{")?;
+        self.elems.fmt_nest(f, level + 1)?;
+        write!(f, "{}}}", "    ".repeat(level))
     }
 }