From ddc5fda173289aed7859155d20b3f1e0a0696b30 Mon Sep 17 00:00:00 2001
From: bflatastic <bombayapirat@gmail.com>
Date: Tue, 20 Oct 2026 01:44:34 +0700
Subject: [PATCH] path.join: a single path closed at coinciding ends is closed
 before its merged anchor is smoothed (#2982)

---
 crates/engine/src/cmd/path.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crates/engine/src/cmd/path.rs b/crates/engine/src/cmd/path.rs
index e421c157e..7a671478a 100644
--- a/crates/engine/src/cmd/path.rs
+++ b/crates/engine/src/cmd/path.rs
@@ -448,6 +448,8 @@ fn join(s: &mut Session, p: &Value) -> Result<Value> {
                     && let Some(first) = sp.anchors.first_mut()
                 {
                     first.h_in = last.h_in;
+                    // Closed first, so the merged anchor smooths between both its neighbours.
+                    sp.closed = true;
                     if let Some(smooth) = join_kind {
                         join_point(sp, 0, smooth);
                     }