https://git.ruby-lang.org/ruby.git/commit/?id=cece71b467

From cece71b46708d69c74583d48478ea4d0401bb746 Mon Sep 17 00:00:00 2001
From: Kazuhiro NISHIYAMA <zn@m...>
Date: Tue, 29 Sep 2020 22:49:44 +0900
Subject: Add call-seq of [Feature #16274]


diff --git a/hash.c b/hash.c
index 15c839c..c496ca6 100644
--- a/hash.c
+++ b/hash.c
@@ -3195,6 +3195,7 @@ transform_keys_i(VALUE key, VALUE value, VALUE result) https://github.com/ruby/ruby/blob/trunk/hash.c#L3195
 /*
  *  call-seq:
  *    hash.transform_keys {|key| ... } -> new_hash
+ *    hash.transform_keys(hash2) -> new_hash
  *    hash.transform_keys -> new_enumerator
  *
  *  Returns a new \Hash object; each entry has:
-- 
cgit v0.10.2


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