From 852758eb9c2ad36cfc9aa187ec4a1fe90ccfd11a Mon Sep 17 00:00:00 2001
From: Andrew Scott <git@andyscott.me>
Date: Mon, 28 Oct 2024 22:22:16 -0400
Subject: [PATCH] Rust: completed Reverse String again

---
 rust/reverse-string/.exercism/metadata.json |  2 +-
 rust/reverse-string/Cargo.toml              | 11 ++++++-----
 rust/reverse-string/README.md               | 15 +++++++++------
 rust/reverse-string/src/lib.rs              |  4 +++-
 rust/reverse-string/tests/reverse-string.rs |  8 ++++++--
 5 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/rust/reverse-string/.exercism/metadata.json b/rust/reverse-string/.exercism/metadata.json
index f306970..825a0fa 100644
--- a/rust/reverse-string/.exercism/metadata.json
+++ b/rust/reverse-string/.exercism/metadata.json
@@ -1 +1 @@
-{"track":"rust","exercise":"reverse-string","id":"aeec5dd024f94c60b89e66907f4e90b9","url":"https://exercism.org/tracks/rust/exercises/reverse-string","handle":"Chomp1295","is_requester":true,"auto_approve":false}
\ No newline at end of file
+{"track":"rust","exercise":"reverse-string","id":"f97879b6def647a5bf82751034c483e3","url":"https://exercism.org/tracks/rust/exercises/reverse-string","handle":"Chomp1295","is_requester":true,"auto_approve":false}
\ No newline at end of file
diff --git a/rust/reverse-string/Cargo.toml b/rust/reverse-string/Cargo.toml
index 52b902c..e8a1ce6 100644
--- a/rust/reverse-string/Cargo.toml
+++ b/rust/reverse-string/Cargo.toml
@@ -1,9 +1,10 @@
-[dependencies]
-
-[features]
-grapheme = []
-
 [package]
 edition = "2021"
 name = "reverse_string"
 version = "1.2.0"
+
+[features]
+grapheme = []
+
+[dependencies]
+unicode-segmentation = "=1.11.0"
diff --git a/rust/reverse-string/README.md b/rust/reverse-string/README.md
index afd18f8..ca34435 100644
--- a/rust/reverse-string/README.md
+++ b/rust/reverse-string/README.md
@@ -21,17 +21,20 @@ Some examples:
 
 ## Bonus
 
-Test your function on this string: `uüu` and see what happens. Try to write a function that properly
-reverses this string. Hint: grapheme clusters
+Test your function on this string: `uüu` and see what happens.
+Try to write a function that properly reverses this string.
+Hint: grapheme clusters
 
-To get the bonus test to run, remove the ignore flag (`#[ignore]`) from the
-last test, and execute the tests with:
+To get the bonus test to run, remove the ignore flag (`#[ignore]`) from the last test, and execute the tests with:
 
 ```bash
-$ cargo test --features grapheme
+cargo test --features grapheme
 ```
 
-You will need to use external libraries (a `crate` in rust lingo) for the bonus task. A good place to look for those is [crates.io](https://crates.io/), the official repository of crates.
+You will need to use external libraries (a `crate` in rust lingo) for the bonus task.
+A good place to look for those is [crates.io](https://crates.io/), the official repository of crates.
+Please remember that only a limited set of crates is supported by our test runner.
+The full list is in [this file](https://github.com/exercism/rust-test-runner/blob/main/local-registry/Cargo.toml) under the section `[dependencies]`.
 
 [Check the documentation](https://doc.rust-lang.org/cargo/guide/dependencies.html) for instructions on how to use external crates in your projects.
 
diff --git a/rust/reverse-string/src/lib.rs b/rust/reverse-string/src/lib.rs
index 0393f10..1c19104 100644
--- a/rust/reverse-string/src/lib.rs
+++ b/rust/reverse-string/src/lib.rs
@@ -1,3 +1,5 @@
+use unicode_segmentation::UnicodeSegmentation;
+
 pub fn reverse(input: &str) -> String {
-    input.chars().rev().collect()
+    input.graphemes(true).rev().collect()
 }
diff --git a/rust/reverse-string/tests/reverse-string.rs b/rust/reverse-string/tests/reverse-string.rs
index cc16866..06f9263 100644
--- a/rust/reverse-string/tests/reverse-string.rs
+++ b/rust/reverse-string/tests/reverse-string.rs
@@ -9,6 +9,7 @@ fn an_empty_string() {
 }
 
 #[test]
+
 fn a_word() {
     let input = "robot";
     let output = reverse(input);
@@ -17,6 +18,7 @@ fn a_word() {
 }
 
 #[test]
+
 fn a_capitalized_word() {
     let input = "Ramen";
     let output = reverse(input);
@@ -25,6 +27,7 @@ fn a_capitalized_word() {
 }
 
 #[test]
+
 fn a_sentence_with_punctuation() {
     let input = "I'm hungry!";
     let output = reverse(input);
@@ -33,6 +36,7 @@ fn a_sentence_with_punctuation() {
 }
 
 #[test]
+
 fn a_palindrome() {
     let input = "racecar";
     let output = reverse(input);
@@ -41,6 +45,7 @@ fn a_palindrome() {
 }
 
 #[test]
+
 fn an_even_sized_word() {
     let input = "drawer";
     let output = reverse(input);
@@ -49,6 +54,7 @@ fn an_even_sized_word() {
 }
 
 #[test]
+
 fn wide_characters() {
     let input = "子猫";
     let output = reverse(input);
@@ -57,7 +63,6 @@ fn wide_characters() {
 }
 
 #[test]
-#[ignore]
 #[cfg(feature = "grapheme")]
 fn grapheme_cluster_with_pre_combined_form() {
     let input = "Würstchenstand";
@@ -67,7 +72,6 @@ fn grapheme_cluster_with_pre_combined_form() {
 }
 
 #[test]
-#[ignore]
 #[cfg(feature = "grapheme")]
 fn grapheme_clusters() {
     let input = "ผู้เขียนโปรแกรม";