From dfd9d0429cbea6133d240a37d6f4edf2a5a90a85 Mon Sep 17 00:00:00 2001
From: Scott McMurray <scottmcm@users.noreply.github.com>
Date: Sat, 1 Jun 2019 00:23:26 -0700
Subject: [PATCH] Add an unusual-conversion example to to_uppercase
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Like how to_lowercase has ὈΔΥΣΣΕΎΣ.
---
 src/liballoc/str.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/liballoc/str.rs b/src/liballoc/str.rs
index f66ff894ae865..0c7d2b837a39a 100644
--- a/src/liballoc/str.rs
+++ b/src/liballoc/str.rs
@@ -431,6 +431,13 @@ impl str {
     ///
     /// assert_eq!(new_year, new_year.to_uppercase());
     /// ```
+    ///
+    /// One character can become multiple:
+    /// ```
+    /// let s = "tschüß";
+    ///
+    /// assert_eq!("TSCHÜSS", s.to_uppercase());
+    /// ```
     #[stable(feature = "unicode_case_mapping", since = "1.2.0")]
     pub fn to_uppercase(&self) -> String {
         let mut s = String::with_capacity(self.len());