Switch the default of the --prism option to true

Author: andrykonchin

Diff for: src/main/java/org/truffleruby/options/LanguageOptions.java

@@ -129,7 +129,7 @@ public final class LanguageOptions {
     public final boolean RUN_TWICE;
     /** --experimental-engine-caching=RUN_TWICE */
     public final boolean EXPERIMENTAL_ENGINE_CACHING;
-    /** --prism=false */
+    /** --prism=true */
     public final boolean PRISM;
 
     public LanguageOptions(Env env, OptionValues options, boolean singleContext) {

Diff for: src/options.yml

@@ -265,4 +265,4 @@ INTERNAL: # Options for debugging the TruffleRuby implementation
     # Options for the regular expression engines
     COMPARE_REGEX_ENGINES: [compare-regex-engines, boolean, false, 'Uses both Joni and the TRegex engine and compares their results']
 
-    PRISM: [prism, boolean, false, 'Use Prism as the parser for Ruby code']
+    PRISM: [prism, boolean, true, 'Use Prism as the parser for Ruby code']

Diff for: src/shared/java/org/truffleruby/shared/options/OptionsCatalog.java

@@ -165,7 +165,7 @@ public final class OptionsCatalog {
     public static final OptionKey<Boolean> RUN_TWICE_KEY = new OptionKey<>(false);
     public static final OptionKey<Boolean> EXPERIMENTAL_ENGINE_CACHING_KEY = new OptionKey<>(RUN_TWICE_KEY.getDefaultValue());
     public static final OptionKey<Boolean> COMPARE_REGEX_ENGINES_KEY = new OptionKey<>(false);
-    public static final OptionKey<Boolean> PRISM_KEY = new OptionKey<>(false);
+    public static final OptionKey<Boolean> PRISM_KEY = new OptionKey<>(true);
 
     public static final OptionDescriptor LOAD_PATHS = OptionDescriptor
             .newBuilder(LOAD_PATHS_KEY, "ruby.load-paths")