From 46befe5267bec959bff5523f6e42f3c1c1dcf5d8 Mon Sep 17 00:00:00 2001
From: BurdetteLamar <burdettelamar@yahoo.com>
Date: Sat, 25 Oct 2025 21:55:01 +0100
Subject: [PATCH] [DOC] Tweaks for StringIO#closed?

---
 ext/stringio/stringio.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index ca71bb48..2760e99a 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -614,8 +614,16 @@ strio_close_write(VALUE self)
  * call-seq:
  *   closed? -> true or false
  *
- * Returns +true+ if +self+ is closed for both reading and writing,
- * +false+ otherwise.
+ * Returns whether +self+ is closed for both reading and writing:
+ *
+ *   strio = StringIO.new
+ *   strio.closed?     # => false  # Open for reading and writing.
+ *   strio.close_read
+ *   strio.closed?     # => false  # Still open for writing.
+ *   strio.close_write
+ *   strio.closed?     # => true   # Now closed for both.
+ *
+ * Related: StringIO.closed_read?, StringIO.closed_write?.
  */
 static VALUE
 strio_closed(VALUE self)