https://git.ruby-lang.org/ruby.git/commit/?id=71428ac264

From 71428ac2645400c02b0ee56b0ff7021542b9616f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sat, 10 Oct 2020 22:11:01 +0900
Subject: [ruby/io-console] Refined getch warnings

https://github.com/ruby/io-console/commit/f84e6abcce

diff --git a/ext/io/console/console.c b/ext/io/console/console.c
index 7d5181c..ff4df73 100644
--- a/ext/io/console/console.c
+++ b/ext/io/console/console.c
@@ -544,7 +544,7 @@ console_getch(int argc, VALUE *argv, VALUE io) https://github.com/ruby/ruby/blob/trunk/ext/io/console/console.c#L544
 	    if (optp->vtime) break;
 	    /* fallthru */
 	  default:
-	    rb_warning("min option ignored");
+	    rb_warning("min option larger than 1 ignored");
 	}
 	if (optp->intr) {
 # ifndef HAVE_RB_IO_WAIT
@@ -556,8 +556,8 @@ console_getch(int argc, VALUE *argv, VALUE io) https://github.com/ruby/ruby/blob/trunk/ext/io/console/console.c#L556
 	    if (result == Qfalse) return Qnil;
 # endif
 	}
-	else {
-	    rb_warning("vtime option ignored if intr flag is unset");
+	else if (optp->vtime) {
+	    rb_warning("Non-zero vtime option ignored if intr flag is unset");
 	}
     }
     len = (int)(VALUE)rb_thread_call_without_gvl(nogvl_getch, wbuf, RUBY_UBF_IO, 0);
-- 
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