https://git.ruby-lang.org/ruby.git/commit/?id=20efeaddbe

From 20efeaddbe246f3b2eaee4f17f54a814777176a8 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Thu, 3 Nov 2022 23:26:53 -0700
Subject: [ruby/erb] Optimize away to_s if it's already T_STRING

[Feature #19102]https://github.com/ruby/erb/commit/38c6e182fb
---
 ext/erb/erb.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/ext/erb/erb.c b/ext/erb/erb.c
index 92cfbd0769..9376fa5dcb 100644
--- a/ext/erb/erb.c
+++ b/ext/erb/erb.c
@@ -68,9 +68,9 @@ optimized_escape_html(VALUE str) https://github.com/ruby/ruby/blob/trunk/ext/erb/erb.c#L68
 }
 
 static VALUE
-cgiesc_escape_html(VALUE self, VALUE str)
+erb_escape_html(VALUE self, VALUE str)
 {
-    StringValue(str);
+    str = rb_convert_type(str, T_STRING, "String", "to_s");
 
     if (rb_enc_str_asciicompat_p(str)) {
         return optimized_escape_html(str);
@@ -80,13 +80,6 @@ cgiesc_escape_html(VALUE self, VALUE str) https://github.com/ruby/ruby/blob/trunk/ext/erb/erb.c#L80
     }
 }
 
-static VALUE
-erb_escape_html(VALUE self, VALUE str)
-{
-    str = rb_funcall(str, rb_intern("to_s"), 0);
-    return cgiesc_escape_html(self, str);
-}
-
 void
 Init_erb(void)
 {
-- 
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