From 14121345adc1bc1cdf00f246f5d2c221aa89f55e Mon Sep 17 00:00:00 2001
From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Thu, 21 Oct 2021 04:41:35 +0200
Subject: [PATCH] Add a comment to the Turkish casefiddle test

---
 test/src/casefiddle-tests.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/src/casefiddle-tests.el b/test/src/casefiddle-tests.el
index 164adbc19ef..dbbe9f30925 100644
--- a/test/src/casefiddle-tests.el
+++ b/test/src/casefiddle-tests.el
@@ -280,6 +280,9 @@
 
 (ert-deftest casefiddle-turkish ()
   (skip-unless (member "tr_TR.utf8" (get-locale-names)))
+  ;; See bug#50752.  The point is that unibyte and multibyte strings
+  ;; are upcased differently in the "dotless i" case in Turkish,
+  ;; turning ASCII into non-ASCII, which is very unusual.
   (with-locale-environment "tr_TR.utf8"
     (should (string-equal (downcase "I ı") "ı ı"))
     (should (string-equal (downcase "İ i") "i̇ i"))
-- 
2.39.2