From f32cd5b3e1e9b5c81f8fe72042212a7c7d3a43a7 Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Thu, 19 Jun 2025 09:29:35 +0200
Subject: [PATCH] Ensure that label repr is syntactically valid (#6456)

---
 crates/typst-library/src/foundations/label.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/crates/typst-library/src/foundations/label.rs b/crates/typst-library/src/foundations/label.rs
index 2f5520b1c..3b9b010c5 100644
--- a/crates/typst-library/src/foundations/label.rs
+++ b/crates/typst-library/src/foundations/label.rs
@@ -79,7 +79,12 @@ impl Label {
 
 impl Repr for Label {
     fn repr(&self) -> EcoString {
-        eco_format!("<{}>", self.resolve())
+        let resolved = self.resolve();
+        if typst_syntax::is_valid_label_literal_id(&resolved) {
+            eco_format!("<{resolved}>")
+        } else {
+            eco_format!("label({})", resolved.repr())
+        }
     }
 }