From 7c09667c55ad26d0f46530261705861100880a23 Mon Sep 17 00:00:00 2001
From: Izumi Raine <63145238+IzumiRaine@users.noreply.github.com>
Date: Sat, 3 Apr 2021 20:21:56 +0200
Subject: [PATCH] Add function compatibility_case_fold_str

---
 src/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 5dba244..0192244 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -59,6 +59,10 @@ pub fn canonical_caseless_match_str(a: &str, b: &str) -> bool {
     a.chars().canonical_caseless_match(b.chars())
 }
 
+pub fn compatibility_case_fold_str(s: &str) -> String {
+    s.nfd().default_case_fold().nfkd().default_case_fold().nfkd().collect()
+}
+
 pub fn compatibility_caseless_match_str(a: &str, b: &str) -> bool {
     a.chars().compatibility_caseless_match(b.chars())
 }