From e3fc735de78d6822d15c0698cc67846ec4427fb6 Mon Sep 17 00:00:00 2001
From: Tobi Lutke <tobi@shopify.com>
Date: Wed, 11 Mar 2026 10:23:56 -0400
Subject: [PATCH] =?UTF-8?q?Cache=20block=5Fdelimiter=20strings=20per=20tag?=
 =?UTF-8?q?=20name=20=E2=80=94=20avoids=20repeated=20string=20interpolatio?=
 =?UTF-8?q?n\n\nResult:=20{"status":"keep","combined=5F=C2=B5s":4372,"pars?=
 =?UTF-8?q?e=5F=C2=B5s":3127,"render=5F=C2=B5s":1245,"allocations":25605}?=
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Content-Type: text/plain; charset=UTF-8
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---
 lib/liquid/block.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/liquid/block.rb b/lib/liquid/block.rb
index 73d86c7b..19a76cb3 100644
--- a/lib/liquid/block.rb
+++ b/lib/liquid/block.rb
@@ -60,8 +60,11 @@ module Liquid
       @tag_name
     end
 
+    # Cache block delimiters per tag name to avoid repeated string allocation
+    BLOCK_DELIMITER_CACHE = Hash.new { |h, k| h[k] = "end#{k}".freeze }
+
     def block_delimiter
-      @block_delimiter ||= "end#{block_name}"
+      @block_delimiter ||= BLOCK_DELIMITER_CACHE[block_name]
     end
 
     private