ruby · y-yagi · Apr 6, 2025 · Oct 3, 2025 · Oct 5, 2025 · Oct 5, 2025
diff --git a/app/ruby_engine.rb b/app/ruby_engine.rb
@@ -39,14 +39,19 @@ def loading(part = nil)
   # When you update the engines, ensure that they are tested correctly.
   # Update the engine list also in spec/playground_spec.
   ENGINES = [
-    # https://www.jsdelivr.com/package/npm/@ruby/3.3-wasm-wasi?tab=files&path=dist&version=2.4.1
+    # https://www.jsdelivr.com/package/npm/@ruby/3.4-wasm-wasi?tab=files&path=dist&version=2.7.2
     CRubyWASI.new(
-      "https://cdn.jsdelivr.net/npm/@ruby/[email protected]/dist/ruby.wasm",
+      "https://cdn.jsdelivr.net/npm/@ruby/[email protected]/dist/ruby.wasm",
+      "3.4.1"
+    ),
+    # https://www.jsdelivr.com/package/npm/@ruby/3.3-wasm-wasi?tab=files&path=dist&version=2.7.2
+    CRubyWASI.new(
+      "https://cdn.jsdelivr.net/npm/@ruby/[email protected]/dist/ruby.wasm",
       "3.3.0"
     ),
-    # https://www.jsdelivr.com/package/npm/@ruby/3.2-wasm-wasi?tab=files&path=dist&version=2.4.1
+    # https://www.jsdelivr.com/package/npm/@ruby/3.2-wasm-wasi?tab=files&path=dist&version=2.7.2
     CRubyWASI.new(
-      "https://cdn.jsdelivr.net/npm/@ruby/3.2-wasm-wasi@2.4.1/dist/ruby.wasm",
+      "https://cdn.jsdelivr.net/npm/@ruby/3.2-wasm-wasi@2.7.2/dist/ruby.wasm",
       "3.2.2"
     ),
     # Opal.new,

diff --git a/app/ruby_engine/cruby_wasi.rb b/app/ruby_engine/cruby_wasi.rb
@@ -6,9 +6,9 @@ class RubyEngine
   class CRubyWASI < RubyEngine
     REQUIRED_SCRIPTS = [
         {
-            # https://www.jsdelivr.com/package/npm/@ruby/wasm-wasi?version=2.4.1&tab=files&path=dist
-            src: "https://cdn.jsdelivr.net/npm/@ruby/wasm-wasi@2.4.1/dist/index.umd.js",
-            integrity: "sha256-300VwPu5WqY+8LDKdE4RQwDglgJSpMtLFLgyf508bv0=",
+            # https://www.jsdelivr.com/package/npm/@ruby/wasm-wasi?version=2.7.2&tab=files&path=dist
+            src: "https://cdn.jsdelivr.net/npm/@ruby/wasm-wasi@2.7.2/dist/index.umd.js",
+            integrity: "sha256-sxHtVJLn+brnck+saGLUKbu/JEP7pilIBgChJvVdjko=",
             crossorigin: "anonymous"
         },
         {

diff --git a/app/try_ruby.rb b/app/try_ruby.rb
@@ -15,7 +15,14 @@ class TryRuby
   RUBY
   INITIAL_TRY_RESULT = 'Welcome ' * 3
 
-  DEFAULT_RUBY_ENGINE = "cruby-3.3.0"
+  DEFAULT_RUBY_ENGINE = "cruby-3.4.1"
+
+  GEM_PRELUDE_WARNINGS = [
+    "`RubyGems' were not loaded.",
+    "`error_highlight' was not loaded.",
+    "`did_you_mean' was not loaded.",
+    "`syntax_suggest' was not loaded."
+  ].freeze
 
   def self.start
     instance
@@ -455,13 +462,24 @@ def log_error(err)
   end
 
   def print_to_output(str, term = "\n")
+    return if warnings_from_gem_prelude?(str)
     @output_buffer << str.to_s + term
     @output.value = @output_buffer.join
   end
 
   def output=(text)
     @output.value = text
   end
+
+  # TODO: This would be needless if only supports Ruby >= 3.5.
+  def warnings_from_gem_prelude?(str)
+    return false if str.nil? || str.empty?
+
+    trimmed_str = str.strip
+    GEM_PRELUDE_WARNINGS.include?(trimmed_str)
+  end
+
+  private
 end
 
 $window.on("dom:load") { TryRuby.start }
diff --git a/spec/playground_spec.rb b/spec/playground_spec.rb
@@ -2,7 +2,7 @@
 
 RSpec.describe "Playground", type: :feature, js: true do
   context "engine" do
-    engines = ["opal-ww-1.8.2", "cruby-3.2.2", "cruby-3.3.0"]
+    engines = ["opal-ww-1.8.2", "cruby-3.2.2", "cruby-3.3.0", "cruby-3.4.1"]
     engines.each do |engine|
       context engine do
         before :each do

diff --git a/translations/de/try_ruby_280.md b/translations/de/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   EN
 title:  Bist du hart?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Gravitys Rainbow" => :splendid, "The deep end" => :abysmal, "Living colors" => :mediocre, "Bumblebees" => :mediocre}
 ok:     Toll, wow! Du hast eine Übersicht über deine Bewertungen erstellt
 error:  

diff --git a/translations/de/try_ruby_90.md b/translations/de/try_ruby_90.md
@@ -1,29 +1,29 @@
 ---
 lang:   DE
 title:  Hey, schon die Zusammenfassung #1
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Nö, es ist nicht möglich, eine Nummer umzukehren. Klick auf 'Next'
-error:  
+error:
 ---
 
 Sehen wir uns an, was Sie in der ersten Minute gelernt haben.
 
 ### Der Editor
-Wenn du den Code in den Editor eingibst und auf Ausführen klickst, erhältst du 
+Wenn du den Code in den Editor eingibst und auf Ausführen klickst, erhältst du
 eine Antwort im Ausgabefenster.
 (Fast) jeder Code gibt eine Antwort.
 
 ### Nummern und Strings
 Nummern und Strings sind Rubys Mathe- und Textobjekte.
 
 ### Methoden
-Du hast englischsprachige Methoden wie 'reverse' und 'length' verwendet. Und 
-symbolische Methoden wie die Multiplikationsmethode: \*  
+Du hast englischsprachige Methoden wie 'reverse' und 'length' verwendet. Und
+symbolische Methoden wie die Multiplikationsmethode: \*
 __Methoden bedeuten Aktion!__
 
-Das ist die Essenz deines Lernens. Mit einfachen Dingen zu spielen und sie in 
-neue Dinge zu verwandeln. Fühlst du dich schon wohl? Ich verspreche dir, es ist 
+Das ist die Essenz deines Lernens. Mit einfachen Dingen zu spielen und sie in
+neue Dinge zu verwandeln. Fühlst du dich schon wohl? Ich verspreche dir, es ist
 so.
 
 ## Okay,

diff --git a/translations/en/try_ruby_280.md b/translations/en/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   EN
 title:  Are You Harsh?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Gravitys Rainbow" => :splendid, "The deep end" => :abysmal, "Living colors" => :mediocre, "Bumblebees" => :mediocre}
 ok:     Great, wow! You've made a scorecard of your ratings
 error:  

diff --git a/translations/en/try_ruby_90.md b/translations/en/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   EN
 title:  Hey, Summary #1 Already
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Nope, it is not possible to reverse a number. Click 'next'
-error:  
+error:
 ---
 
 Let's look at what you've learned in the first minute.
@@ -18,7 +18,7 @@ Numbers and strings are Ruby's math and text objects.
 
 ### Methods
 You've used English-language methods like reverse and length. And symbolic methods like the
-multiplication method: \*  
+multiplication method: \*
 __Methods mean action!__
 
 This is the essence of your learning. Taking simple things, toying with them and turning them into

diff --git a/translations/es/try_ruby_280.md b/translations/es/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   ES
 title:  ¿Eres severo?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:	libros = {"El Arco Iris de Gravedad" => :esplendido, "El fin profundo" => :abismal, "Colores vivientes" => :mediocre, "Abejorros" => :mediocre}
 ok:     ¡Genial! Has hecho un marcador de puntuaciones.
 error:  

diff --git a/translations/es/try_ruby_90.md b/translations/es/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   ES
 title:  Ey, Sumario #1 Ya
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Nop, no es posible dar la vuelta a un número. Pulsa 'next'
-error:  
+error:
 ---
 
 Echemos un vistazo a lo que has aprendido en el primer minuto.
@@ -17,7 +17,7 @@ Escribir código en el editor y pulsar __run__ te da una respuesta en la ventana
 Los números y los strings (las cadenas de texto) son los objetos de Ruby para las mates y los textos.
 
 ### Métodos
-Ya has usado métodos de lenguaje como dar la __vuelta__ (reverse) o __tamaño__ (length). Y también métodos simbólicos como la multiplicación: \*  
+Ya has usado métodos de lenguaje como dar la __vuelta__ (reverse) o __tamaño__ (length). Y también métodos simbólicos como la multiplicación: \*
 __Los Métodos significan acción!__
 
 Esta es la esencia de tu aprendizaje. Coger cosas simples, jugar con ellas y convertirlas en cosas nuevas. ¿Te sientes cómodo? Seguro que sí.

diff --git a/translations/fr/try_ruby_90.md b/translations/fr/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   FR
 title:  Hé, Résumé #1 Déjà
-answer: NoMethodError|undefined
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Nop, ce n'est pas possible d'inverser un nombre. Clique sur 'next'.
-error:  
+error:
 ---
 
 Regardons ce que tu as appris dans la première minute.
@@ -18,7 +18,7 @@ Les nombres et les chaînes de caractères sont des objets mathématiques et tex
 
 ### Méthodes
 Tu as utilisé des méthodes en anglais comme reverse (__inverse__) et length (__longueur__) . Et des méthodes symboliques comme la
-méthode de multiplication : \*  
+méthode de multiplication : \*
 __Méthodes signifie action !__
 
 C'est l'essence de ton apprentissage. Prendre des choses simples, jouer avec elles et les transformer en

diff --git a/translations/ja/try_ruby_280.md b/translations/ja/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   JA
 title:  辛辣な書評をつけてしまった？
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Gravitys Rainbow" => :splendid, "The deep end" => :abysmal, "Living colors" => :mediocre, "Bumblebees" => :mediocre}
 ok:     やった！すごいです。評価のスコアカードを作成しました
 error:  

diff --git a/translations/ja/try_ruby_90.md b/translations/ja/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   JA
 title:  このくらいで要約（その1）にしましょう
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     いいえ、数を逆さまにはできません。'Next'を押してください
-error:  
+error:
 ---
 
 ここまでの数分で学んだことを確認してみましょう。

diff --git a/translations/mk/try_ruby_280.md b/translations/mk/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   MK
 title:  Дали си строг при оценувањето на книгите?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Gravitys Rainbow" => :splendid, "The deep end" => :abysmal, "Living colors" => :mediocre, "Bumblebees" => :mediocre}
 ok:     Одлично, браво! Ти само што направи карта со твои оцени.
 error:  

diff --git a/translations/mk/try_ruby_90.md b/translations/mk/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   MK
 title:  Резиме на делот #1. Толку брзо?!
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Не, не е можно да го прикажеш бројот во обратен редослед. Кликни 'Next'
-error:  
+error:
 ---
 
 Ајде да погледнеме што сѐ научи во овие неколку воведни минути.
@@ -18,10 +18,10 @@ error:
 
 ### Методи
 Ти користеше методи чие име е блиско на Англискиот-јазик, и тоа: reverse и length. И симболички методи како што е
-методот за множење: \* 
+методот за множење: \*
 __Методите значат извршување на некаква активност!__
 
-Ова е основата за твоето учење. Земање на едноставни работи, манипулирање со нив и нивна трансформација во 
+Ова е основата за твоето учење. Земање на едноставни работи, манипулирање со нив и нивна трансформација во
 нови работи. Се чувствуваш комфортно, нели? Ти ветувам дека си.
 
 ## Во ред,

diff --git a/translations/nl/try_ruby_90.md b/translations/nl/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   NL
 title:  Je hebt samenvatting 1 bereikt
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Nee, nummers kan je niet omdraaien. Klik 'next'
-error:  
+error:
 ---
 
 Je bent net 1 minuut bezig en kijk eens wat je allemaal al weet.
@@ -18,8 +18,8 @@ je wilt tonen.
 Numbers en strings zijn Ruby's reken en tekst objecten.
 
 ### Methodes
-Je hebt Engelstalige methodes gebruikt als _reverse_ en _length_.  
-En symbolische methoden zoals vermenigvuldigen: \*  
+Je hebt Engelstalige methodes gebruikt als _reverse_ en _length_.
+En symbolische methoden zoals vermenigvuldigen: \*
 __Methodes betekenen actie!__
 
 

diff --git a/translations/pt-br/try_ruby_280.md b/translations/pt-br/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   PT-BR
 title:  Você é Áspero (Harsh)?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   livros = {"O Arco-Íris da Gravidade" => :esplendido, "Até o Fim" => :lixo, "Cores Vivas" => :mediocre, "Bumblebees" => :mediocre}
 ok:     Ótimo, wow! Você fez um scorecard das suas análises.
 error:  

diff --git a/translations/pt-br/try_ruby_90.md b/translations/pt-br/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   PT-BR
 title:  Ei, Sumário #1 Pronto
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Não, não é possível inverter um número. Clique em __next__ para continuar
-error:  
+error:
 ---
 
 Vamos revisar o que nós aprendemos neste primeiro minuto.

diff --git a/translations/ru/try_ruby_280.md b/translations/ru/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   RU
 title:  А ты суров?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Война и мир" => :splendid, "Отцы и дети" => :abysmal, "Идиот" => :mediocre, "Евгений Онегин" => :amazing}
 ok:     Отлично, круто! Вы создали таблицу своих оценок
 ---

diff --git a/translations/ru/try_ruby_90.md b/translations/ru/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   RU
 title:  Подводим итоги #1 Уже
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Неа, нельзя использовать метод reverse с числом. Жми 'next'
-error:  
+error:
 ---
 
 Давайте посмотрим, что Вы уже изучили.
@@ -18,7 +18,7 @@ error:
 
 ### Методы
 Вы попробовали использовать методы из слов на английском языке reverse и length. А также символьный
-метод умножения: \*  
+метод умножения: \*
 __Метод значит действие!__
 
 В этом суть Вашего обучения. Берем базовые вещи, играем с ними и превращаем их в

diff --git a/translations/tr/try_ruby_280.md b/translations/tr/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   TR
 title:  Sert Misin?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Gravitys Rainbow" => :splendid, "The deep end" => :abysmal, "Living colors" => :mediocre, "Bumblebees" => :mediocre}
 ok:     Süper, vay! Değerlendirmelerinin bir puan kardını oluşturdun
 error:  

diff --git a/translations/tr/try_ruby_90.md b/translations/tr/try_ruby_90.md
@@ -1,10 +1,10 @@
 ---
 lang:   TR
 title:  Hey, Özet #Şimdiden 1 Numara
-answer: NoMethodError|undefined|-e:in `eval'
+answer: NoMethodError|undefined|-e:in `eval'|-e:in 'Kernel.eval'
 class:  stretcher chapmark
 ok:     Yoo, bir numarayı ters çevirmek mümkün değil ki. 'next' butonuna bas
-error:  
+error:
 ---
 
 Hadi ilk dakikanda öğrendiklerine bir göz atalım.
@@ -16,7 +16,7 @@ Editöre yazmak ve run butonuna basmak sana çıktı ekranında bir sonuç verir
 ### Numaralar ve string'ler
 Numaraler ve string'ler Ruby'nin matematik ve metin objeleridir.
 
-### Metodlar  
+### Metodlar
 İngilizce dilinde olan reverse ve length gibi metod isimleri kullandın. Ayrıca çarpma metodu
 gibi sembolik metodlar da kullandın: \*
 __Methodlar aksiyon anlamına gelir!__

diff --git a/translations/ua/try_ruby_280.md b/translations/ua/try_ruby_280.md
@@ -1,7 +1,7 @@
 ---
 lang:   UA
 title:  Ти суворий критик?
-answer: :mediocre
+answer: :mediocre|mediocre:
 load:   books = {"Фарбований Лис" => :splendid, "Сутінки. Сага." => :abysmal, "Хоббіт" => :mediocre, "Голодні ігри" => :mediocre}
 ok:     Ти створив свій власний рейтинг книжок
 error: