From a187851900377383eabb91df9954b56252ddda64 Mon Sep 17 00:00:00 2001
From: Blake Mizerany <blake.mizerany@gmail.com>
Date: Fri, 5 Apr 2024 22:17:07 -0700
Subject: [PATCH] x/model: fast-path CompareFold for unequal lengths

---
 x/model/name.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/x/model/name.go b/x/model/name.go
index a6cef7e35..82396af27 100644
--- a/x/model/name.go
+++ b/x/model/name.go
@@ -308,13 +308,17 @@ func (r Name) CompareFold(o Name) int {
 }
 
 func compareFold(a, b string) int {
+	// fast-path for unequal lengths
+	if n := cmp.Compare(len(a), len(b)); n != 0 {
+		return n
+	}
 	for i := 0; i < len(a) && i < len(b); i++ {
 		ca, cb := downcase(a[i]), downcase(b[i])
 		if n := cmp.Compare(ca, cb); n != 0 {
 			return n
 		}
 	}
-	return cmp.Compare(len(a), len(b))
+	return 0
 }
 
 func downcase(c byte) byte {