Default to CRuby for https://try.ruby-lang.org/

app/ruby_engine.rb

@@ -9,6 +9,16 @@ def run(source)
     raise NotImplementedError
   end
 
+  def exception_to_string(err)
+    # Beautify the backtrace a little bit
+    backtrace = err.backtrace
+    backtrace = backtrace.select { |i| i.include? '<anonymous>' }
+    backtrace = backtrace.map { |i| i.gsub(/.*(<anonymous>)/, '\1') }
+    backtrace = ["(file)"] if backtrace.empty?
+    err.set_backtrace(backtrace)
+    err.full_message
+  end
+
   def run_with_writer(source, writer, &block)
     @writer = writer
     @dots = 0
@@ -29,8 +39,6 @@ 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 = [
-    # Opal.new,
-    OpalWebWorker.new("1.7.1"),
     CRubyWASI.new(
       "https://cdn.jsdelivr.net/npm/[email protected]/dist/ruby.wasm",
       "3.2.0"
@@ -41,6 +49,9 @@ def loading(part = nil)
     #   "https://cdn.jsdelivr.net/npm/ruby-head-wasm-wasi@next/dist/ruby.wasm",
     #   "3.3.0dev"
     # ),
+
+    # Opal.new,
+    OpalWebWorker.new("1.7.1"),
   ].each_with_object({}) do |engine, hash|
     hash[engine.engine_id] = engine
   end

app/ruby_engine/cruby_wasi.rb

@@ -74,8 +74,8 @@ def run(source)
         textDecoder = `new TextDecoder("utf-8")`
         %x{
           wasmFs.fs.writeSync = (fd, buffer, offset, length, position) => {
-            const text = textDecoder.decode(buffer);
             if (fd == 1 || fd == 2) {
+              const text = textDecoder.decode(buffer);
               #{@writer.print_to_output(`text`, "")};
             }
             return originalWriteSync(fd, buffer, offset, length, position);
@@ -102,11 +102,18 @@ def run(source)
         `vm.setInstance(wasmInstance)`.await
         `wasi.setMemory(wasmInstance.exports.memory)`
         `vm.initialize()`
+        set_external_encoding = "Encoding.default_external = Encoding::UTF_8"
+        `vm.eval(set_external_encoding)`
       end
 
       yield `vm.eval(source).toString()`
     rescue JS::Error => err
-      @writer.log_error(err)
+      raise err
+    end
+
+    def exception_to_string(err)
+      # "...: undefined method `reverse' for 40:Integer (NoMethodError)\n (Exception)\n"
+      super(err).sub(/\s+\(Exception\)\s*\z/, '')
     end
   end
 end

app/try_ruby.rb

@@ -14,7 +14,7 @@ class TryRuby
   RUBY
   INITIAL_TRY_RESULT = 'Welcome ' * 3
 
-  DEFAULT_RUBY_ENGINE = "opal-ww-1.7.1"
+  DEFAULT_RUBY_ENGINE = "cruby-3.2.0"
 
   def self.start
     instance
@@ -397,14 +397,14 @@ def show_result(retval)
     # Do not check the answer if there is no regexp matcher
     if @current_item && @current_item.answer
       # Get last line of output
-      value_to_check = @output_buffer.length > 0 && !@output_buffer.last.empty? ? @output_buffer.last.chomp : ''
+      value_to_check = @output_buffer.join.rstrip.lines.last
 
       # Check if output matches the defined answer regexp
       # and print status message
       print_to_output("\n")
       from = count_lines
 
-      if !value_to_check.empty? && value_to_check.chomp.match(@current_item.answer)
+      if value_to_check && !value_to_check.empty? && value_to_check.match(@current_item.answer)
         @current_item.ok.each do |line|
           print_to_output(line)
         end
@@ -431,13 +431,7 @@ def count_lines
 
   def log_error(err)
     unless err.is_a? String
-      # Beautify the backtrace a little bit
-      backtrace = err.backtrace
-      backtrace = backtrace.select { |i| i.include? '<anonymous>' }
-      backtrace = backtrace.map { |i| i.gsub(/.*(<anonymous>)/, '\1') }
-      backtrace = ["(file)"] if backtrace.empty?
-      err.set_backtrace(backtrace)
-      err = err.full_message
+      err = @engine.exception_to_string(err)
     end
 
     from = count_lines

spec/tutorial_spec.rb

@@ -16,11 +16,6 @@
 
       dataset = language_dataset(language)
 
-      it "displays a correct title on the first page of the tutorial" do
-        page.should have_content(dataset["1"]["title"])
-        the_cookie_of_step.should be == 1
-      end
-
       steps = {
         1 => {pass: true},
         12 => {code: "[12, 47, 35, 1]"},
@@ -80,6 +75,11 @@
           end
         end
       end
+
+      it "displays a correct title on the first page of the tutorial" do
+        page.should have_content(dataset["1"]["title"])
+        the_cookie_of_step.should be == 1
+      end
     end
   end
 end

translations/en/try_ruby_200.md

@@ -1,7 +1,7 @@
 ---
 lang:   EN
 title:  Ready, Aim
-answer: ^\n.ti tae ot (.+)
+answer: dnah ym morf nwolf sah tsaot yM
 load:   prev
 ok:     Okay, sure.  So the whole poem has been turned backwards.
 error:  

translations/en/try_ruby_220.md

@@ -1,7 +1,7 @@
 ---
 lang:   EN
 title:  Ringlets of Chained Methods
-answer: ^More still did (.+)
+answer: My toast has flown from my hand
 load:   prev
 ok:     Good show, my friend!<br/>The join method took that array of lines and put them together into a string.
 error:  

translations/en/try_ruby_280.md

@@ -1,7 +1,7 @@
 ---
 lang:   EN
 title:  Are You Harsh?
-answer: "mediocre"
+answer: :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:  

translations/en/try_ruby_380.md

@@ -4,7 +4,7 @@ title:  The world is our oyster
 answer: ^\{\"William
 ok:     Good. Bit difficult to read.
 error:  
-load:   def get_shakey;JSON.parse("{\"William Shakespeare\": {\"1\": {\"title\": \"The Two Gentlemen of Verona\", \"finished\": 1591},\"2\": {\"title\": \"The Taming of the Shrew\", \"finished\": 1591},\"3\": {\"title\": \"Henry VI, Part 2\", \"finished\": 1591},\"4\": {\"title\": \"Henry VI, Part 3\", \"finished\": 1591},\"5\": {\"title\": \"Henry VI, Part 1\", \"finished\": 1592},\"6\": {\"title\": \"Titus Andronicus\", \"finished\": 1592},\"7\": {\"title\": \"Richard III\", \"finished\": 1593},\"8\": {\"title\": \"Edward III\", \"finished\": 1593},\"9\": {\"title\": \"The Comedy of Errors\", \"finished\": 1594},\"10\": {\"title\": \"Love's Labour's Lost\", \"finished\": 1595},\"11\": {\"title\": \"Love's Labour's Won\", \"finished\": 1596},\"12\": {\"title\": \"Richard II\", \"finished\": 1595},\"13\": {\"title\": \"Romeo and Juliet\", \"finished\": 1595},\"14\": {\"title\": \"A Midsummer Night's Dream\", \"finished\": 1595},\"15\": {\"title\": \"King John\", \"finished\": 1596},\"16\": {\"title\": \"The Merchant of Venice\", \"finished\": 1597},\"17\": {\"title\": \"Henry IV, Part 1\", \"finished\": 1597},\"18\": {\"title\": \"The Merry Wives of Windsor\", \"finished\": 1597},\"19\": {\"title\": \"Henry IV, Part 2\", \"finished\": 1598},\"20\": {\"title\": \"Much Ado About Nothing\", \"finished\": 1599},\"21\": {\"title\": \"Henry V\", \"finished\": 1599},\"22\": {\"title\": \"Julius Caesar\", \"finished\": 1599},\"23\": {\"title\": \"As You Like It\", \"finished\": 1600},\"24\": {\"title\": \"Hamlet\", \"finished\": 1601},\"25\": {\"title\": \"Twelfth Night\", \"finished\": 1601},\"26\": {\"title\": \"Troilus and Cressida\", \"finished\": 1602},\"27\": {\"title\": \"Sir Thomas More\", \"finished\": 1604},\"28\": {\"title\": \"Measure for Measure\", \"finished\": 1604},\"29\": {\"title\": \"Othello\", \"finished\": 1604},\"30\": {\"title\": \"All's Well That Ends Well\", \"finished\": 1605},\"31\": {\"title\": \"King Lear\", \"finished\": 1606},\"32\": {\"title\": \"Timon of Athens\", \"finished\": 1606},\"33\": {\"title\": \"Macbeth\", \"finished\": 1606},\"34\": {\"title\": \"Antony and Cleopatra\", \"finished\": 1606},\"35\": {\"title\": \"Pericles, Prince of Tyre\", \"finished\": 1608},\"36\": {\"title\": \"Coriolanus\", \"finished\": 1608},\"37\": {\"title\": \"The Winter's Tale\", \"finished\": 1611},\"38\": {\"title\": \"Cymbeline\", \"finished\": 1610},\"39\": {\"title\": \"The Tempest\", \"finished\": 1611},\"40\": {\"title\": \"Cardenio\", \"finished\": 1613},\"41\": {\"title\": \"Henry VIII\", \"finished\": 1613},\"42\": {\"title\": \"The Two Noble Kinsmen\", \"finished\": 1614}}}");end;
+load:   def get_shakey; {"William Shakespeare"=>{"1"=>{"title"=>"The Two Gentlemen of Verona", "finished"=>1591},"2"=>{"title"=>"The Taming of the Shrew", "finished"=>1591},"3"=>{"title"=>"Henry VI, Part 2", "finished"=>1591},"4"=>{"title"=>"Henry VI, Part 3", "finished"=>1591},"5"=>{"title"=>"Henry VI, Part 1", "finished"=>1592},"6"=>{"title"=>"Titus Andronicus", "finished"=>1592},"7"=>{"title"=>"Richard III", "finished"=>1593},"8"=>{"title"=>"Edward III", "finished"=>1593},"9"=>{"title"=>"The Comedy of Errors", "finished"=>1594},"10"=>{"title"=>"Love's Labour's Lost", "finished"=>1595},"11"=>{"title"=>"Love's Labour's Won", "finished"=>1596},"12"=>{"title"=>"Richard II", "finished"=>1595},"13"=>{"title"=>"Romeo and Juliet", "finished"=>1595},"14"=>{"title"=>"A Midsummer Night's Dream", "finished"=>1595},"15"=>{"title"=>"King John", "finished"=>1596},"16"=>{"title"=>"The Merchant of Venice", "finished"=>1597},"17"=>{"title"=>"Henry IV, Part 1", "finished"=>1597},"18"=>{"title"=>"The Merry Wives of Windsor", "finished"=>1597},"19"=>{"title"=>"Henry IV, Part 2", "finished"=>1598},"20"=>{"title"=>"Much Ado About Nothing", "finished"=>1599},"21"=>{"title"=>"Henry V", "finished"=>1599},"22"=>{"title"=>"Julius Caesar", "finished"=>1599},"23"=>{"title"=>"As You Like It", "finished"=>1600},"24"=>{"title"=>"Hamlet", "finished"=>1601},"25"=>{"title"=>"Twelfth Night", "finished"=>1601},"26"=>{"title"=>"Troilus and Cressida", "finished"=>1602},"27"=>{"title"=>"Sir Thomas More", "finished"=>1604},"28"=>{"title"=>"Measure for Measure", "finished"=>1604},"29"=>{"title"=>"Othello", "finished"=>1604},"30"=>{"title"=>"All's Well That Ends Well", "finished"=>1605},"31"=>{"title"=>"King Lear", "finished"=>1606},"32"=>{"title"=>"Timon of Athens", "finished"=>1606},"33"=>{"title"=>"Macbeth", "finished"=>1606},"34"=>{"title"=>"Antony and Cleopatra", "finished"=>1606},"35"=>{"title"=>"Pericles, Prince of Tyre", "finished"=>1608},"36"=>{"title"=>"Coriolanus", "finished"=>1608},"37"=>{"title"=>"The Winter's Tale", "finished"=>1611},"38"=>{"title"=>"Cymbeline", "finished"=>1610},"39"=>{"title"=>"The Tempest", "finished"=>1611},"40"=>{"title"=>"Cardenio", "finished"=>1613},"41"=>{"title"=>"Henry VIII", "finished"=>1613},"42"=>{"title"=>"The Two Noble Kinsmen", "finished"=>1614}}}; end;
 ---
 
 So far we have been running programs that only use things that we have typed ourselves.

translations/en/try_ruby_500.md

@@ -25,7 +25,7 @@ At the same time we can limit the length of the Blurb<sup>TM</sup> content to 40
       end
     end
 
-    Blurb.new.time
+    Blurb.new(:sick).time
 
 (That parameter __content=""__ is there to make sure that we know content is a string,
 even if no content parameter is passed to the initialize method.)

translations/es/try_ruby_200.md

@@ -1,7 +1,7 @@
 ---
 lang:   ES
 title:  Apunten. Fuego
-answer: ^\n.ti tae ot (.+)
+answer: dnah ym morf nwolf sah tsaot yM
 load:   prev
 ok:     De acuerdo, sí. Se ha dado la vuelta el poema entero.
 error:  

translations/es/try_ruby_220.md

@@ -1,7 +1,7 @@
 ---
 lang:   ES
 title:  Tirabuzón de Métodos en Cadena
-answer: ^More still did (.+)
+answer: My toast has flown from my hand
 load:   prev
 ok:     Bien hecho, amigo mío.<br/>El método join cogió el array de líneas y las puso juntas en un string.
 error:  

translations/es/try_ruby_280.md

@@ -1,7 +1,7 @@
 ---
 lang:   ES
 title:  ¿Eres severo?
-answer: "mediocre"
+answer: :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:  

translations/es/try_ruby_380.md

@@ -4,7 +4,7 @@ title:  El mundo es nuestro
 answer: ^\{\"William
 ok:     Bien. Un poco difícil de leer
 error:  
-load:   def get_shakey;JSON.parse("{\"William Shakespeare\": {\"1\": {\"titulo\": \"Los dos hidalgos de Verona\", \"terminado\": 1591},\"2\": {\"titulo\": \"La fierecilla domada\", \"terminado\": 1591},\"3\": {\"titulo\": \"Enrique VI, Parte 2\", \"terminado\": 1591},\"4\": {\"titulo\": \"Enrique VI, Parte 3\", \"terminado\": 1591},\"5\": {\"titulo\": \"Enrique VI, Parte 1\", \"terminado\": 1592},\"6\": {\"titulo\": \"Tito Andrónico\", \"terminado\": 1592},\"7\": {\"titulo\": \"Ricardo III\", \"terminado\": 1593},\"8\": {\"titulo\": \"Eduardo III\", \"terminado\": 1593},\"9\": {\"titulo\": \"La comedia de las equivocaciones\", \"terminado\": 1594},\"10\": {\"titulo\": \"Trabajos de amor perdidos\", \"terminado\": 1595},\"11\": {\"titulo\": \"Trabajos de amor ganados\", \"terminado\": 1596},\"12\": {\"titulo\": \"Ricardo II\", \"terminado\": 1595},\"13\": {\"titulo\": \"Romeo y Julieta\", \"terminado\": 1595},\"14\": {\"titulo\": \"El sueño de una noche de verano\", \"terminado\": 1595},\"15\": {\"titulo\": \"El rey Juan\", \"terminado\": 1596},\"16\": {\"titulo\": \"El mercader de Venecia\", \"terminado\": 1597},\"17\": {\"titulo\": \"Enrique IV, Parte 1\", \"terminado\": 1597},\"18\": {\"titulo\": \"Las alegres comadres de Windsor\", \"terminado\": 1597},\"19\": {\"titulo\": \"Enrique IV, Parte 2\", \"terminado\": 1598},\"20\": {\"titulo\": \"Mucho ruido y pocas nueces\", \"terminado\": 1599},\"21\": {\"titulo\": \"Enrique V\", \"terminado\": 1599},\"22\": {\"titulo\": \"Julio Cesar\", \"terminado\": 1599},\"23\": {\"titulo\": \"Como gustéis\", \"terminado\": 1600},\"24\": {\"titulo\": \"Hamlet\", \"terminado\": 1601},\"25\": {\"titulo\": \"La decimosegunda noche\", \"terminado\": 1601},\"26\": {\"titulo\": \"Troilo y Crésida\", \"terminado\": 1602},\"27\": {\"titulo\": \"Tomás Moro\", \"terminado\": 1604},\"28\": {\"titulo\": \"Medida por medida\", \"terminado\": 1604},\"29\": {\"titulo\": \"Otelo\", \"terminado\": 1604},\"30\": {\"titulo\": \"A buen fin no hay mal tiempo\", \"terminado\": 1605},\"31\": {\"titulo\": \"El rey Lear\", \"terminado\": 1606},\"32\": {\"titulo\": \"Timón de Atenas\", \"terminado\": 1606},\"33\": {\"titulo\": \"Macbeth\", \"terminado\": 1606},\"34\": {\"titulo\": \"Antonio y Cleopatra\", \"terminado\": 1606},\"35\": {\"titulo\": \"Pericles\", \"terminado\": 1608},\"36\": {\"titulo\": \"Coriolano\", \"terminado\": 1608},\"37\": {\"titulo\": \"Cuento de invierno\", \"terminado\": 1611},\"38\": {\"titulo\": \"Cimbelino\", \"terminado\": 1610},\"39\": {\"titulo\": \"La tempestad\", \"terminado\": 1611},\"40\": {\"titulo\": \"Cardenio\", \"terminado\": 1613},\"41\": {\"titulo\": \"Enrique VIII\", \"terminado\": 1613},\"42\": {\"titulo\": \"Los dos nobles caballeros\", \"terminado\": 1614}}}");end;
+load:   def get_shakey; {"William Shakespeare"=>{"1"=>{"titulo"=>"Los dos hidalgos de Verona", "terminado"=>1591},"2"=>{"titulo"=>"La fierecilla domada", "terminado"=>1591},"3"=>{"titulo"=>"Enrique VI, Parte 2", "terminado"=>1591},"4"=>{"titulo"=>"Enrique VI, Parte 3", "terminado"=>1591},"5"=>{"titulo"=>"Enrique VI, Parte 1", "terminado"=>1592},"6"=>{"titulo"=>"Tito Andrónico", "terminado"=>1592},"7"=>{"titulo"=>"Ricardo III", "terminado"=>1593},"8"=>{"titulo"=>"Eduardo III", "terminado"=>1593},"9"=>{"titulo"=>"La comedia de las equivocaciones", "terminado"=>1594},"10"=>{"titulo"=>"Trabajos de amor perdidos", "terminado"=>1595},"11"=>{"titulo"=>"Trabajos de amor ganados", "terminado"=>1596},"12"=>{"titulo"=>"Ricardo II", "terminado"=>1595},"13"=>{"titulo"=>"Romeo y Julieta", "terminado"=>1595},"14"=>{"titulo"=>"El sueño de una noche de verano", "terminado"=>1595},"15"=>{"titulo"=>"El rey Juan", "terminado"=>1596},"16"=>{"titulo"=>"El mercader de Venecia", "terminado"=>1597},"17"=>{"titulo"=>"Enrique IV, Parte 1", "terminado"=>1597},"18"=>{"titulo"=>"Las alegres comadres de Windsor", "terminado"=>1597},"19"=>{"titulo"=>"Enrique IV, Parte 2", "terminado"=>1598},"20"=>{"titulo"=>"Mucho ruido y pocas nueces", "terminado"=>1599},"21"=>{"titulo"=>"Enrique V", "terminado"=>1599},"22"=>{"titulo"=>"Julio Cesar", "terminado"=>1599},"23"=>{"titulo"=>"Como gustéis", "terminado"=>1600},"24"=>{"titulo"=>"Hamlet", "terminado"=>1601},"25"=>{"titulo"=>"La decimosegunda noche", "terminado"=>1601},"26"=>{"titulo"=>"Troilo y Crésida", "terminado"=>1602},"27"=>{"titulo"=>"Tomás Moro", "terminado"=>1604},"28"=>{"titulo"=>"Medida por medida", "terminado"=>1604},"29"=>{"titulo"=>"Otelo", "terminado"=>1604},"30"=>{"titulo"=>"A buen fin no hay mal tiempo", "terminado"=>1605},"31"=>{"titulo"=>"El rey Lear", "terminado"=>1606},"32"=>{"titulo"=>"Timón de Atenas", "terminado"=>1606},"33"=>{"titulo"=>"Macbeth", "terminado"=>1606},"34"=>{"titulo"=>"Antonio y Cleopatra", "terminado"=>1606},"35"=>{"titulo"=>"Pericles", "terminado"=>1608},"36"=>{"titulo"=>"Coriolano", "terminado"=>1608},"37"=>{"titulo"=>"Cuento de invierno", "terminado"=>1611},"38"=>{"titulo"=>"Cimbelino", "terminado"=>1610},"39"=>{"titulo"=>"La tempestad", "terminado"=>1611},"40"=>{"titulo"=>"Cardenio", "terminado"=>1613},"41"=>{"titulo"=>"Enrique VIII", "terminado"=>1613},"42"=>{"titulo"=>"Los dos nobles caballeros", "terminado"=>1614}}}; end;
 ---
 
 Hasta ahora hemos ejecutado programas que usan solamente cosas que hemos tecleado nosotros mismos.

translations/es/try_ruby_500.md

@@ -24,6 +24,6 @@ A la misma vez podemos limitar la longitud del contenido del Blurb<sup>TM</sup>
       end
     end
 
-    Blurb.new.tiempo
+    Blurb.new(:sick).tiempo
 
 (Ese parámetro __contenido=""__ está ahí para asegurarnos de que tenemos un string como contenido, aunque no le pasemos nada al método initialize).

translations/ja/try_ruby_200.md

@@ -1,7 +1,7 @@
 ---
 lang:   JA
 title:  構えて、狙って
-answer: ^\n.ti tae ot (.+)
+answer: dnah ym morf nwolf sah tsaot yM
 load:   prev
 ok:     オーケー。詩全体が逆順に変わりました。
 error:  

translations/ja/try_ruby_220.md

@@ -1,7 +1,7 @@
 ---
 lang:   JA
 title:  メソッドをつなげる
-answer: ^More still did (.+)
+answer: My toast has flown from my hand
 load:   prev
 ok:     いい感じですね！joinメソッドは、配列の各要素をつなげて、一つの文字列にしました。
 error:  

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
 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: