From 9095ff53cf6c25154c7f80910aab8d1af45c42ec Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@jeremyevans.net>
Date: Wed, 26 Jun 2019 16:36:52 -0700
Subject: [ruby/date] Describe what is meant by valid in the Date.valid_date?
 rdoc

https://github.com/ruby/date/commit/8eca79d1f0
---
 ext/date/date_core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ext/date/date_core.c b/ext/date/date_core.c
index 67ed6171a7..388b30ba7a 100644
--- a/ext/date/date_core.c
+++ b/ext/date/date_core.c
@@ -2545,9 +2545,12 @@ date_s__valid_civil_p(int argc, VALUE *argv, VALUE klass)
  *    Date.valid_date?(year, month, mday[, start=Date::ITALY])   ->  bool
  *
  * Returns true if the given calendar date is valid, and false if not.
+ * Valid in this context is whether the arguments passed to this
+ * method would be accepted by ::new.
  *
  *    Date.valid_date?(2001,2,3)	#=> true
  *    Date.valid_date?(2001,2,29)	#=> false
+ *    Date.valid_date?(2001,2,-1)	#=> true
  *
  * See also ::jd and ::civil.
  */
-- 
cgit v1.2.3