diff --git a/.gitignore b/.gitignore
index fe303330b1..1ef1e76edd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -255,17 +255,17 @@ lcov*.info
 # /wasm/
 /wasm/tests/*.wasm
 
-# YARP
-/lib/yarp/compiler.rb
-/lib/yarp/dispatcher.rb
-/lib/yarp/dsl.rb
-/lib/yarp/mutation_compiler.rb
-/lib/yarp/node.rb
-/lib/yarp/serialize.rb
-/lib/yarp/visitor.rb
-/yarp/api_node.c
-/yarp/ast.h
-/yarp/node.c
-/yarp/prettyprint.c
-/yarp/serialize.c
-/yarp/token_type.c
+# prism
+/lib/prism/compiler.rb
+/lib/prism/dispatcher.rb
+/lib/prism/dsl.rb
+/lib/prism/mutation_compiler.rb
+/lib/prism/node.rb
+/lib/prism/serialize.rb
+/lib/prism/visitor.rb
+/prism/api_node.c
+/prism/ast.h
+/prism/node.c
+/prism/prettyprint.c
+/prism/serialize.c
+/prism/token_type.c
diff --git a/lib/yarp.rb b/lib/prism.rb
similarity index 100%
rename from lib/yarp.rb
rename to lib/prism.rb
diff --git a/lib/yarp/debug.rb b/lib/prism/debug.rb
similarity index 100%
rename from lib/yarp/debug.rb
rename to lib/prism/debug.rb
diff --git a/lib/yarp/desugar_compiler.rb b/lib/prism/desugar_compiler.rb
similarity index 100%
rename from lib/yarp/desugar_compiler.rb
rename to lib/prism/desugar_compiler.rb
diff --git a/lib/yarp/ffi.rb b/lib/prism/ffi.rb
similarity index 100%
rename from lib/yarp/ffi.rb
rename to lib/prism/ffi.rb
diff --git a/lib/yarp/language_server.rb b/lib/prism/language_server.rb
similarity index 100%
rename from lib/yarp/language_server.rb
rename to lib/prism/language_server.rb
diff --git a/lib/yarp/lex_compat.rb b/lib/prism/lex_compat.rb
similarity index 100%
rename from lib/yarp/lex_compat.rb
rename to lib/prism/lex_compat.rb
diff --git a/lib/yarp/node_ext.rb b/lib/prism/node_ext.rb
similarity index 100%
rename from lib/yarp/node_ext.rb
rename to lib/prism/node_ext.rb
diff --git a/lib/yarp/node_inspector.rb b/lib/prism/node_inspector.rb
similarity index 100%
rename from lib/yarp/node_inspector.rb
rename to lib/prism/node_inspector.rb
diff --git a/lib/yarp/pack.rb b/lib/prism/pack.rb
similarity index 100%
rename from lib/yarp/pack.rb
rename to lib/prism/pack.rb
diff --git a/lib/yarp/parse_result.rb b/lib/prism/parse_result.rb
similarity index 100%
rename from lib/yarp/parse_result.rb
rename to lib/prism/parse_result.rb
diff --git a/lib/yarp/parse_result/comments.rb b/lib/prism/parse_result/comments.rb
similarity index 100%
rename from lib/yarp/parse_result/comments.rb
rename to lib/prism/parse_result/comments.rb
diff --git a/lib/yarp/parse_result/newlines.rb b/lib/prism/parse_result/newlines.rb
similarity index 100%
rename from lib/yarp/parse_result/newlines.rb
rename to lib/prism/parse_result/newlines.rb
diff --git a/lib/yarp/pattern.rb b/lib/prism/pattern.rb
similarity index 100%
rename from lib/yarp/pattern.rb
rename to lib/prism/pattern.rb
diff --git a/lib/yarp/yarp.gemspec b/lib/prism/prism.gemspec
similarity index 100%
rename from lib/yarp/yarp.gemspec
rename to lib/prism/prism.gemspec
diff --git a/lib/yarp/ripper_compat.rb b/lib/prism/ripper_compat.rb
similarity index 100%
rename from lib/yarp/ripper_compat.rb
rename to lib/prism/ripper_compat.rb
diff --git a/lib/yarp/version.rb b/lib/prism/version.rb
similarity index 100%
rename from lib/yarp/version.rb
rename to lib/prism/version.rb
diff --git a/yarp/api_pack.c b/prism/api_pack.c
similarity index 100%
rename from yarp/api_pack.c
rename to prism/api_pack.c
diff --git a/yarp/config.yml b/prism/config.yml
similarity index 100%
rename from yarp/config.yml
rename to prism/config.yml
diff --git a/yarp/defines.h b/prism/defines.h
similarity index 100%
rename from yarp/defines.h
rename to prism/defines.h
diff --git a/yarp/diagnostic.c b/prism/diagnostic.c
similarity index 100%
rename from yarp/diagnostic.c
rename to prism/diagnostic.c
diff --git a/yarp/diagnostic.h b/prism/diagnostic.h
similarity index 100%
rename from yarp/diagnostic.h
rename to prism/diagnostic.h
diff --git a/yarp/enc/yp_big5.c b/prism/enc/pm_big5.c
similarity index 100%
rename from yarp/enc/yp_big5.c
rename to prism/enc/pm_big5.c
diff --git a/yarp/enc/yp_encoding.h b/prism/enc/pm_encoding.h
similarity index 100%
rename from yarp/enc/yp_encoding.h
rename to prism/enc/pm_encoding.h
diff --git a/yarp/enc/yp_euc_jp.c b/prism/enc/pm_euc_jp.c
similarity index 100%
rename from yarp/enc/yp_euc_jp.c
rename to prism/enc/pm_euc_jp.c
diff --git a/yarp/enc/yp_gbk.c b/prism/enc/pm_gbk.c
similarity index 100%
rename from yarp/enc/yp_gbk.c
rename to prism/enc/pm_gbk.c
diff --git a/yarp/enc/yp_shift_jis.c b/prism/enc/pm_shift_jis.c
similarity index 100%
rename from yarp/enc/yp_shift_jis.c
rename to prism/enc/pm_shift_jis.c
diff --git a/yarp/enc/yp_tables.c b/prism/enc/pm_tables.c
similarity index 100%
rename from yarp/enc/yp_tables.c
rename to prism/enc/pm_tables.c
diff --git a/yarp/enc/yp_unicode.c b/prism/enc/pm_unicode.c
similarity index 100%
rename from yarp/enc/yp_unicode.c
rename to prism/enc/pm_unicode.c
diff --git a/yarp/enc/yp_windows_31j.c b/prism/enc/pm_windows_31j.c
similarity index 100%
rename from yarp/enc/yp_windows_31j.c
rename to prism/enc/pm_windows_31j.c
diff --git a/yarp/extension.c b/prism/extension.c
similarity index 100%
rename from yarp/extension.c
rename to prism/extension.c
diff --git a/yarp/extension.h b/prism/extension.h
similarity index 100%
rename from yarp/extension.h
rename to prism/extension.h
diff --git a/yarp/node.h b/prism/node.h
similarity index 100%
rename from yarp/node.h
rename to prism/node.h
diff --git a/yarp/pack.c b/prism/pack.c
similarity index 100%
rename from yarp/pack.c
rename to prism/pack.c
diff --git a/yarp/pack.h b/prism/pack.h
similarity index 100%
rename from yarp/pack.h
rename to prism/pack.h
diff --git a/yarp/parser.h b/prism/parser.h
similarity index 100%
rename from yarp/parser.h
rename to prism/parser.h
diff --git a/yarp/yarp.c b/prism/prism.c
similarity index 100%
rename from yarp/yarp.c
rename to prism/prism.c
diff --git a/yarp/yarp.h b/prism/prism.h
similarity index 100%
rename from yarp/yarp.h
rename to prism/prism.h
diff --git a/yarp/yarp_compiler.c b/prism/prism_compiler.c
similarity index 100%
rename from yarp/yarp_compiler.c
rename to prism/prism_compiler.c
diff --git a/yarp/yarp_init.c b/prism/prism_init.c
similarity index 100%
rename from yarp/yarp_init.c
rename to prism/prism_init.c
diff --git a/yarp/regexp.c b/prism/regexp.c
similarity index 100%
rename from yarp/regexp.c
rename to prism/regexp.c
diff --git a/yarp/regexp.h b/prism/regexp.h
similarity index 100%
rename from yarp/regexp.h
rename to prism/regexp.h
diff --git a/yarp/templates/ext/yarp/api_node.c.erb b/prism/templates/ext/prism/api_node.c.erb
similarity index 100%
rename from yarp/templates/ext/yarp/api_node.c.erb
rename to prism/templates/ext/prism/api_node.c.erb
diff --git a/yarp/templates/include/yarp/ast.h.erb b/prism/templates/include/prism/ast.h.erb
similarity index 100%
rename from yarp/templates/include/yarp/ast.h.erb
rename to prism/templates/include/prism/ast.h.erb
diff --git a/yarp/templates/lib/yarp/compiler.rb.erb b/prism/templates/lib/prism/compiler.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/compiler.rb.erb
rename to prism/templates/lib/prism/compiler.rb.erb
diff --git a/yarp/templates/lib/yarp/dispatcher.rb.erb b/prism/templates/lib/prism/dispatcher.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/dispatcher.rb.erb
rename to prism/templates/lib/prism/dispatcher.rb.erb
diff --git a/yarp/templates/lib/yarp/dsl.rb.erb b/prism/templates/lib/prism/dsl.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/dsl.rb.erb
rename to prism/templates/lib/prism/dsl.rb.erb
diff --git a/yarp/templates/lib/yarp/mutation_compiler.rb.erb b/prism/templates/lib/prism/mutation_compiler.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/mutation_compiler.rb.erb
rename to prism/templates/lib/prism/mutation_compiler.rb.erb
diff --git a/yarp/templates/lib/yarp/node.rb.erb b/prism/templates/lib/prism/node.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/node.rb.erb
rename to prism/templates/lib/prism/node.rb.erb
diff --git a/yarp/templates/lib/yarp/serialize.rb.erb b/prism/templates/lib/prism/serialize.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/serialize.rb.erb
rename to prism/templates/lib/prism/serialize.rb.erb
diff --git a/yarp/templates/lib/yarp/visitor.rb.erb b/prism/templates/lib/prism/visitor.rb.erb
similarity index 100%
rename from yarp/templates/lib/yarp/visitor.rb.erb
rename to prism/templates/lib/prism/visitor.rb.erb
diff --git a/yarp/templates/src/node.c.erb b/prism/templates/src/node.c.erb
similarity index 100%
rename from yarp/templates/src/node.c.erb
rename to prism/templates/src/node.c.erb
diff --git a/yarp/templates/src/prettyprint.c.erb b/prism/templates/src/prettyprint.c.erb
similarity index 100%
rename from yarp/templates/src/prettyprint.c.erb
rename to prism/templates/src/prettyprint.c.erb
diff --git a/yarp/templates/src/serialize.c.erb b/prism/templates/src/serialize.c.erb
similarity index 100%
rename from yarp/templates/src/serialize.c.erb
rename to prism/templates/src/serialize.c.erb
diff --git a/yarp/templates/src/token_type.c.erb b/prism/templates/src/token_type.c.erb
similarity index 100%
rename from yarp/templates/src/token_type.c.erb
rename to prism/templates/src/token_type.c.erb
diff --git a/yarp/templates/template.rb b/prism/templates/template.rb
similarity index 100%
rename from yarp/templates/template.rb
rename to prism/templates/template.rb
diff --git a/yarp/unescape.c b/prism/unescape.c
similarity index 100%
rename from yarp/unescape.c
rename to prism/unescape.c
diff --git a/yarp/unescape.h b/prism/unescape.h
similarity index 100%
rename from yarp/unescape.h
rename to prism/unescape.h
diff --git a/yarp/util/yp_buffer.c b/prism/util/pm_buffer.c
similarity index 100%
rename from yarp/util/yp_buffer.c
rename to prism/util/pm_buffer.c
diff --git a/yarp/util/yp_buffer.h b/prism/util/pm_buffer.h
similarity index 100%
rename from yarp/util/yp_buffer.h
rename to prism/util/pm_buffer.h
diff --git a/yarp/util/yp_char.c b/prism/util/pm_char.c
similarity index 100%
rename from yarp/util/yp_char.c
rename to prism/util/pm_char.c
diff --git a/yarp/util/yp_char.h b/prism/util/pm_char.h
similarity index 100%
rename from yarp/util/yp_char.h
rename to prism/util/pm_char.h
diff --git a/yarp/util/yp_constant_pool.c b/prism/util/pm_constant_pool.c
similarity index 100%
rename from yarp/util/yp_constant_pool.c
rename to prism/util/pm_constant_pool.c
diff --git a/yarp/util/yp_constant_pool.h b/prism/util/pm_constant_pool.h
similarity index 100%
rename from yarp/util/yp_constant_pool.h
rename to prism/util/pm_constant_pool.h
diff --git a/yarp/util/yp_list.c b/prism/util/pm_list.c
similarity index 100%
rename from yarp/util/yp_list.c
rename to prism/util/pm_list.c
diff --git a/yarp/util/yp_list.h b/prism/util/pm_list.h
similarity index 100%
rename from yarp/util/yp_list.h
rename to prism/util/pm_list.h
diff --git a/yarp/util/yp_memchr.c b/prism/util/pm_memchr.c
similarity index 100%
rename from yarp/util/yp_memchr.c
rename to prism/util/pm_memchr.c
diff --git a/yarp/util/yp_memchr.h b/prism/util/pm_memchr.h
similarity index 100%
rename from yarp/util/yp_memchr.h
rename to prism/util/pm_memchr.h
diff --git a/yarp/util/yp_newline_list.c b/prism/util/pm_newline_list.c
similarity index 100%
rename from yarp/util/yp_newline_list.c
rename to prism/util/pm_newline_list.c
diff --git a/yarp/util/yp_newline_list.h b/prism/util/pm_newline_list.h
similarity index 100%
rename from yarp/util/yp_newline_list.h
rename to prism/util/pm_newline_list.h
diff --git a/yarp/util/yp_state_stack.c b/prism/util/pm_state_stack.c
similarity index 100%
rename from yarp/util/yp_state_stack.c
rename to prism/util/pm_state_stack.c
diff --git a/yarp/util/yp_state_stack.h b/prism/util/pm_state_stack.h
similarity index 100%
rename from yarp/util/yp_state_stack.h
rename to prism/util/pm_state_stack.h
diff --git a/yarp/util/yp_string.c b/prism/util/pm_string.c
similarity index 100%
rename from yarp/util/yp_string.c
rename to prism/util/pm_string.c
diff --git a/yarp/util/yp_string.h b/prism/util/pm_string.h
similarity index 100%
rename from yarp/util/yp_string.h
rename to prism/util/pm_string.h
diff --git a/yarp/util/yp_string_list.c b/prism/util/pm_string_list.c
similarity index 100%
rename from yarp/util/yp_string_list.c
rename to prism/util/pm_string_list.c
diff --git a/yarp/util/yp_string_list.h b/prism/util/pm_string_list.h
similarity index 100%
rename from yarp/util/yp_string_list.h
rename to prism/util/pm_string_list.h
diff --git a/yarp/util/yp_strncasecmp.c b/prism/util/pm_strncasecmp.c
similarity index 100%
rename from yarp/util/yp_strncasecmp.c
rename to prism/util/pm_strncasecmp.c
diff --git a/yarp/util/yp_strpbrk.c b/prism/util/pm_strpbrk.c
similarity index 100%
rename from yarp/util/yp_strpbrk.c
rename to prism/util/pm_strpbrk.c
diff --git a/yarp/util/yp_strpbrk.h b/prism/util/pm_strpbrk.h
similarity index 100%
rename from yarp/util/yp_strpbrk.h
rename to prism/util/pm_strpbrk.h
diff --git a/yarp/version.h b/prism/version.h
similarity index 100%
rename from yarp/version.h
rename to prism/version.h
diff --git a/test/yarp/bom_test.rb b/test/prism/bom_test.rb
similarity index 100%
rename from test/yarp/bom_test.rb
rename to test/prism/bom_test.rb
diff --git a/test/yarp/comments_test.rb b/test/prism/comments_test.rb
similarity index 100%
rename from test/yarp/comments_test.rb
rename to test/prism/comments_test.rb
diff --git a/test/yarp/compiler_test.rb b/test/prism/compiler_test.rb
similarity index 100%
rename from test/yarp/compiler_test.rb
rename to test/prism/compiler_test.rb
diff --git a/test/yarp/desugar_compiler_test.rb b/test/prism/desugar_compiler_test.rb
similarity index 100%
rename from test/yarp/desugar_compiler_test.rb
rename to test/prism/desugar_compiler_test.rb
diff --git a/test/yarp/dispatcher_test.rb b/test/prism/dispatcher_test.rb
similarity index 100%
rename from test/yarp/dispatcher_test.rb
rename to test/prism/dispatcher_test.rb
diff --git a/test/yarp/encoding_test.rb b/test/prism/encoding_test.rb
similarity index 100%
rename from test/yarp/encoding_test.rb
rename to test/prism/encoding_test.rb
diff --git a/test/yarp/errors_test.rb b/test/prism/errors_test.rb
similarity index 100%
rename from test/yarp/errors_test.rb
rename to test/prism/errors_test.rb
diff --git a/test/yarp/fixtures/alias.txt b/test/prism/fixtures/alias.txt
similarity index 100%
rename from test/yarp/fixtures/alias.txt
rename to test/prism/fixtures/alias.txt
diff --git a/test/yarp/fixtures/arithmetic.txt b/test/prism/fixtures/arithmetic.txt
similarity index 100%
rename from test/yarp/fixtures/arithmetic.txt
rename to test/prism/fixtures/arithmetic.txt
diff --git a/test/yarp/fixtures/arrays.txt b/test/prism/fixtures/arrays.txt
similarity index 100%
rename from test/yarp/fixtures/arrays.txt
rename to test/prism/fixtures/arrays.txt
diff --git a/test/yarp/fixtures/begin_ensure.txt b/test/prism/fixtures/begin_ensure.txt
similarity index 100%
rename from test/yarp/fixtures/begin_ensure.txt
rename to test/prism/fixtures/begin_ensure.txt
diff --git a/test/yarp/fixtures/begin_rescue.txt b/test/prism/fixtures/begin_rescue.txt
similarity index 100%
rename from test/yarp/fixtures/begin_rescue.txt
rename to test/prism/fixtures/begin_rescue.txt
diff --git a/test/yarp/fixtures/blocks.txt b/test/prism/fixtures/blocks.txt
similarity index 100%
rename from test/yarp/fixtures/blocks.txt
rename to test/prism/fixtures/blocks.txt
diff --git a/test/yarp/fixtures/boolean_operators.txt b/test/prism/fixtures/boolean_operators.txt
similarity index 100%
rename from test/yarp/fixtures/boolean_operators.txt
rename to test/prism/fixtures/boolean_operators.txt
diff --git a/test/yarp/fixtures/booleans.txt b/test/prism/fixtures/booleans.txt
similarity index 100%
rename from test/yarp/fixtures/booleans.txt
rename to test/prism/fixtures/booleans.txt
diff --git a/test/yarp/fixtures/break.txt b/test/prism/fixtures/break.txt
similarity index 100%
rename from test/yarp/fixtures/break.txt
rename to test/prism/fixtures/break.txt
diff --git a/test/yarp/fixtures/case.txt b/test/prism/fixtures/case.txt
similarity index 100%
rename from test/yarp/fixtures/case.txt
rename to test/prism/fixtures/case.txt
diff --git a/test/yarp/fixtures/classes.txt b/test/prism/fixtures/classes.txt
similarity index 100%
rename from test/yarp/fixtures/classes.txt
rename to test/prism/fixtures/classes.txt
diff --git a/test/yarp/fixtures/comments.txt b/test/prism/fixtures/comments.txt
similarity index 100%
rename from test/yarp/fixtures/comments.txt
rename to test/prism/fixtures/comments.txt
diff --git a/test/yarp/fixtures/constants.txt b/test/prism/fixtures/constants.txt
similarity index 100%
rename from test/yarp/fixtures/constants.txt
rename to test/prism/fixtures/constants.txt
diff --git a/test/yarp/fixtures/dash_heredocs.txt b/test/prism/fixtures/dash_heredocs.txt
similarity index 100%
rename from test/yarp/fixtures/dash_heredocs.txt
rename to test/prism/fixtures/dash_heredocs.txt
diff --git a/test/yarp/fixtures/defined.txt b/test/prism/fixtures/defined.txt
similarity index 100%
rename from test/yarp/fixtures/defined.txt
rename to test/prism/fixtures/defined.txt
diff --git a/test/yarp/fixtures/dos_endings.txt b/test/prism/fixtures/dos_endings.txt
similarity index 100%
rename from test/yarp/fixtures/dos_endings.txt
rename to test/prism/fixtures/dos_endings.txt
diff --git a/test/yarp/fixtures/embdoc_no_newline_at_end.txt b/test/prism/fixtures/embdoc_no_newline_at_end.txt
similarity index 100%
rename from test/yarp/fixtures/embdoc_no_newline_at_end.txt
rename to test/prism/fixtures/embdoc_no_newline_at_end.txt
diff --git a/test/yarp/fixtures/endless_methods.txt b/test/prism/fixtures/endless_methods.txt
similarity index 100%
rename from test/yarp/fixtures/endless_methods.txt
rename to test/prism/fixtures/endless_methods.txt
diff --git a/test/yarp/fixtures/endless_range_in_conditional.txt b/test/prism/fixtures/endless_range_in_conditional.txt
similarity index 100%
rename from test/yarp/fixtures/endless_range_in_conditional.txt
rename to test/prism/fixtures/endless_range_in_conditional.txt
diff --git a/test/yarp/fixtures/for.txt b/test/prism/fixtures/for.txt
similarity index 100%
rename from test/yarp/fixtures/for.txt
rename to test/prism/fixtures/for.txt
diff --git a/test/yarp/fixtures/global_variables.txt b/test/prism/fixtures/global_variables.txt
similarity index 100%
rename from test/yarp/fixtures/global_variables.txt
rename to test/prism/fixtures/global_variables.txt
diff --git a/test/yarp/fixtures/hashes.txt b/test/prism/fixtures/hashes.txt
similarity index 100%
rename from test/yarp/fixtures/hashes.txt
rename to test/prism/fixtures/hashes.txt
diff --git a/test/yarp/fixtures/heredoc_with_escaped_newline_at_start.txt b/test/prism/fixtures/heredoc_with_escaped_newline_at_start.txt
similarity index 100%
rename from test/yarp/fixtures/heredoc_with_escaped_newline_at_start.txt
rename to test/prism/fixtures/heredoc_with_escaped_newline_at_start.txt
diff --git a/test/yarp/fixtures/heredoc_with_trailing_newline.txt b/test/prism/fixtures/heredoc_with_trailing_newline.txt
similarity index 100%
rename from test/yarp/fixtures/heredoc_with_trailing_newline.txt
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diff --git a/test/yarp/fixtures/heredocs_nested.txt b/test/prism/fixtures/heredocs_nested.txt
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diff --git a/test/yarp/fixtures/seattlerb/heredoc_with_interpolation_and_carriage_return_escapes.txt b/test/prism/fixtures/seattlerb/heredoc_with_interpolation_and_carriage_return_escapes.txt
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diff --git a/test/yarp/fixtures/seattlerb/lasgn_call_bracket_rescue_arg.txt b/test/prism/fixtures/seattlerb/lasgn_call_bracket_rescue_arg.txt
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diff --git a/test/yarp/fixtures/seattlerb/mlhs_mid_splat.txt b/test/prism/fixtures/seattlerb/mlhs_mid_splat.txt
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diff --git a/test/yarp/fixtures/seattlerb/mlhs_rescue.txt b/test/prism/fixtures/seattlerb/mlhs_rescue.txt
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diff --git a/test/yarp/fixtures/seattlerb/module_comments.txt b/test/prism/fixtures/seattlerb/module_comments.txt
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diff --git a/test/yarp/fixtures/seattlerb/multiline_hash_declaration.txt b/test/prism/fixtures/seattlerb/multiline_hash_declaration.txt
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diff --git a/test/yarp/fixtures/seattlerb/non_interpolated_symbol_array_line_breaks.txt b/test/prism/fixtures/seattlerb/non_interpolated_symbol_array_line_breaks.txt
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diff --git a/test/yarp/fixtures/seattlerb/non_interpolated_word_array_line_breaks.txt b/test/prism/fixtures/seattlerb/non_interpolated_word_array_line_breaks.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_command_call.txt b/test/prism/fixtures/seattlerb/op_asgn_command_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_dot_ident_command_call.txt b/test/prism/fixtures/seattlerb/op_asgn_dot_ident_command_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_index_command_call.txt b/test/prism/fixtures/seattlerb/op_asgn_index_command_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_primary_colon_const_command_call.txt b/test/prism/fixtures/seattlerb/op_asgn_primary_colon_const_command_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_primary_colon_identifier1.txt b/test/prism/fixtures/seattlerb/op_asgn_primary_colon_identifier1.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_primary_colon_identifier_command_call.txt b/test/prism/fixtures/seattlerb/op_asgn_primary_colon_identifier_command_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/op_asgn_val_dot_ident_command_call.txt b/test/prism/fixtures/seattlerb/op_asgn_val_dot_ident_command_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_def_special_name.txt b/test/prism/fixtures/seattlerb/parse_def_special_name.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_if_not_canonical.txt b/test/prism/fixtures/seattlerb/parse_if_not_canonical.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_block.txt b/test/prism/fixtures/seattlerb/parse_line_block.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_block_inline_comment.txt b/test/prism/fixtures/seattlerb/parse_line_block_inline_comment.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_block_inline_comment_leading_newlines.txt b/test/prism/fixtures/seattlerb/parse_line_block_inline_comment_leading_newlines.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_block_inline_multiline_comment.txt b/test/prism/fixtures/seattlerb/parse_line_block_inline_multiline_comment.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_call_ivar_arg_no_parens_line_break.txt b/test/prism/fixtures/seattlerb/parse_line_call_ivar_arg_no_parens_line_break.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_call_ivar_line_break_paren.txt b/test/prism/fixtures/seattlerb/parse_line_call_ivar_line_break_paren.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_call_no_args.txt b/test/prism/fixtures/seattlerb/parse_line_call_no_args.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_defn_complex.txt b/test/prism/fixtures/seattlerb/parse_line_defn_complex.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_defn_no_parens.txt b/test/prism/fixtures/seattlerb/parse_line_defn_no_parens.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_defn_no_parens_args.txt b/test/prism/fixtures/seattlerb/parse_line_defn_no_parens_args.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_dot2.txt b/test/prism/fixtures/seattlerb/parse_line_dot2.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_dot2_open.txt b/test/prism/fixtures/seattlerb/parse_line_dot2_open.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_dot3.txt b/test/prism/fixtures/seattlerb/parse_line_dot3.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_dstr_escaped_newline.txt b/test/prism/fixtures/seattlerb/parse_line_dstr_escaped_newline.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_dstr_soft_newline.txt b/test/prism/fixtures/seattlerb/parse_line_dstr_soft_newline.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_evstr_after_break.txt b/test/prism/fixtures/seattlerb/parse_line_evstr_after_break.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_hash_lit.txt b/test/prism/fixtures/seattlerb/parse_line_hash_lit.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_heredoc.txt b/test/prism/fixtures/seattlerb/parse_line_heredoc.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_heredoc_hardnewline.txt b/test/prism/fixtures/seattlerb/parse_line_heredoc_hardnewline.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_heredoc_regexp_chars.txt b/test/prism/fixtures/seattlerb/parse_line_heredoc_regexp_chars.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_iter_call_no_parens.txt b/test/prism/fixtures/seattlerb/parse_line_iter_call_no_parens.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_iter_call_parens.txt b/test/prism/fixtures/seattlerb/parse_line_iter_call_parens.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_multiline_str.txt b/test/prism/fixtures/seattlerb/parse_line_multiline_str.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_multiline_str_literal_n.txt b/test/prism/fixtures/seattlerb/parse_line_multiline_str_literal_n.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_newlines.txt b/test/prism/fixtures/seattlerb/parse_line_newlines.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_op_asgn.txt b/test/prism/fixtures/seattlerb/parse_line_op_asgn.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_postexe.txt b/test/prism/fixtures/seattlerb/parse_line_postexe.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_preexe.txt b/test/prism/fixtures/seattlerb/parse_line_preexe.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_rescue.txt b/test/prism/fixtures/seattlerb/parse_line_rescue.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_return.txt b/test/prism/fixtures/seattlerb/parse_line_return.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_str_with_newline_escape.txt b/test/prism/fixtures/seattlerb/parse_line_str_with_newline_escape.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_to_ary.txt b/test/prism/fixtures/seattlerb/parse_line_to_ary.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_line_trailing_newlines.txt b/test/prism/fixtures/seattlerb/parse_line_trailing_newlines.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_opt_call_args_assocs_comma.txt b/test/prism/fixtures/seattlerb/parse_opt_call_args_assocs_comma.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_opt_call_args_lit_comma.txt b/test/prism/fixtures/seattlerb/parse_opt_call_args_lit_comma.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_pattern_019.txt b/test/prism/fixtures/seattlerb/parse_pattern_019.txt
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diff --git a/test/yarp/fixtures/seattlerb/parse_until_not_canonical.txt b/test/prism/fixtures/seattlerb/parse_until_not_canonical.txt
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diff --git a/test/yarp/fixtures/seattlerb/pctW_lineno.txt b/test/prism/fixtures/seattlerb/pctW_lineno.txt
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diff --git a/test/yarp/fixtures/seattlerb/pct_w_heredoc_interp_nested.txt b/test/prism/fixtures/seattlerb/pct_w_heredoc_interp_nested.txt
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diff --git a/test/yarp/fixtures/seattlerb/pipe_semicolon.txt b/test/prism/fixtures/seattlerb/pipe_semicolon.txt
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diff --git a/test/yarp/fixtures/seattlerb/read_escape_unicode_curlies.txt b/test/prism/fixtures/seattlerb/read_escape_unicode_curlies.txt
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diff --git a/test/yarp/fixtures/seattlerb/read_escape_unicode_h4.txt b/test/prism/fixtures/seattlerb/read_escape_unicode_h4.txt
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diff --git a/test/yarp/fixtures/seattlerb/regexp_esc_C_slash.txt b/test/prism/fixtures/seattlerb/regexp_esc_C_slash.txt
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diff --git a/test/yarp/fixtures/seattlerb/rescue_do_end_ensure_result.txt b/test/prism/fixtures/seattlerb/rescue_do_end_ensure_result.txt
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diff --git a/test/yarp/fixtures/seattlerb/rescue_do_end_no_raise.txt b/test/prism/fixtures/seattlerb/rescue_do_end_no_raise.txt
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diff --git a/test/yarp/fixtures/seattlerb/return_call_assocs.txt b/test/prism/fixtures/seattlerb/return_call_assocs.txt
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diff --git a/test/yarp/fixtures/seattlerb/ruby21_numbers.txt b/test/prism/fixtures/seattlerb/ruby21_numbers.txt
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diff --git a/test/yarp/fixtures/seattlerb/safe_call_rhs_newline.txt b/test/prism/fixtures/seattlerb/safe_call_rhs_newline.txt
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diff --git a/test/yarp/fixtures/seattlerb/safe_calls.txt b/test/prism/fixtures/seattlerb/safe_calls.txt
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diff --git a/test/yarp/fixtures/seattlerb/safe_op_asgn.txt b/test/prism/fixtures/seattlerb/safe_op_asgn.txt
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diff --git a/test/yarp/fixtures/seattlerb/slashy_newlines_within_string.txt b/test/prism/fixtures/seattlerb/slashy_newlines_within_string.txt
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diff --git a/test/yarp/fixtures/seattlerb/stabby_arg_no_paren.txt b/test/prism/fixtures/seattlerb/stabby_arg_no_paren.txt
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diff --git a/test/yarp/fixtures/seattlerb/stabby_arg_opt_splat_arg_block_omfg.txt b/test/prism/fixtures/seattlerb/stabby_arg_opt_splat_arg_block_omfg.txt
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diff --git a/test/yarp/fixtures/seattlerb/stabby_block_iter_call.txt b/test/prism/fixtures/seattlerb/stabby_block_iter_call.txt
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diff --git a/test/yarp/fixtures/seattlerb/stabby_block_iter_call_no_target_with_arg.txt b/test/prism/fixtures/seattlerb/stabby_block_iter_call_no_target_with_arg.txt
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diff --git a/test/yarp/fixtures/seattlerb/stabby_block_kw.txt b/test/prism/fixtures/seattlerb/stabby_block_kw.txt
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diff --git a/test/yarp/fixtures/seattlerb/stabby_proc_scope.txt b/test/prism/fixtures/seattlerb/stabby_proc_scope.txt
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diff --git a/test/yarp/fixtures/seattlerb/str_backslashes.txt b/test/prism/fixtures/seattlerb/str_backslashes.txt
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diff --git a/test/yarp/fixtures/seattlerb/str_double_double_escaped_newline.txt b/test/prism/fixtures/seattlerb/str_double_double_escaped_newline.txt
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diff --git a/test/yarp/fixtures/seattlerb/str_interp_ternary_or_label.txt b/test/prism/fixtures/seattlerb/str_interp_ternary_or_label.txt
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diff --git a/test/yarp/fixtures/seattlerb/str_lit_concat_bad_encodings.txt b/test/prism/fixtures/seattlerb/str_lit_concat_bad_encodings.txt
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diff --git a/test/yarp/fixtures/seattlerb/str_newline_hash_line_number.txt b/test/prism/fixtures/seattlerb/str_newline_hash_line_number.txt
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diff --git a/test/yarp/snapshots/seattlerb/mlhs_mid_anonsplat.txt b/test/prism/snapshots/seattlerb/mlhs_mid_anonsplat.txt
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diff --git a/test/yarp/snapshots/seattlerb/mlhs_rescue.txt b/test/prism/snapshots/seattlerb/mlhs_rescue.txt
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diff --git a/test/yarp/snapshots/seattlerb/module_comments.txt b/test/prism/snapshots/seattlerb/module_comments.txt
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diff --git a/test/yarp/snapshots/seattlerb/multiline_hash_declaration.txt b/test/prism/snapshots/seattlerb/multiline_hash_declaration.txt
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diff --git a/test/yarp/snapshots/seattlerb/non_interpolated_symbol_array_line_breaks.txt b/test/prism/snapshots/seattlerb/non_interpolated_symbol_array_line_breaks.txt
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diff --git a/test/yarp/snapshots/seattlerb/non_interpolated_word_array_line_breaks.txt b/test/prism/snapshots/seattlerb/non_interpolated_word_array_line_breaks.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_command_call.txt b/test/prism/snapshots/seattlerb/op_asgn_command_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_dot_ident_command_call.txt b/test/prism/snapshots/seattlerb/op_asgn_dot_ident_command_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_index_command_call.txt b/test/prism/snapshots/seattlerb/op_asgn_index_command_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_primary_colon_const_command_call.txt b/test/prism/snapshots/seattlerb/op_asgn_primary_colon_const_command_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_primary_colon_identifier1.txt b/test/prism/snapshots/seattlerb/op_asgn_primary_colon_identifier1.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_primary_colon_identifier_command_call.txt b/test/prism/snapshots/seattlerb/op_asgn_primary_colon_identifier_command_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/op_asgn_val_dot_ident_command_call.txt b/test/prism/snapshots/seattlerb/op_asgn_val_dot_ident_command_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_def_special_name.txt b/test/prism/snapshots/seattlerb/parse_def_special_name.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_if_not_canonical.txt b/test/prism/snapshots/seattlerb/parse_if_not_canonical.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_block.txt b/test/prism/snapshots/seattlerb/parse_line_block.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_block_inline_comment.txt b/test/prism/snapshots/seattlerb/parse_line_block_inline_comment.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_block_inline_comment_leading_newlines.txt b/test/prism/snapshots/seattlerb/parse_line_block_inline_comment_leading_newlines.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_block_inline_multiline_comment.txt b/test/prism/snapshots/seattlerb/parse_line_block_inline_multiline_comment.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_call_ivar_arg_no_parens_line_break.txt b/test/prism/snapshots/seattlerb/parse_line_call_ivar_arg_no_parens_line_break.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_call_ivar_line_break_paren.txt b/test/prism/snapshots/seattlerb/parse_line_call_ivar_line_break_paren.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_call_no_args.txt b/test/prism/snapshots/seattlerb/parse_line_call_no_args.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_defn_complex.txt b/test/prism/snapshots/seattlerb/parse_line_defn_complex.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_defn_no_parens_args.txt b/test/prism/snapshots/seattlerb/parse_line_defn_no_parens_args.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_dot2.txt b/test/prism/snapshots/seattlerb/parse_line_dot2.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_dot2_open.txt b/test/prism/snapshots/seattlerb/parse_line_dot2_open.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_dot3.txt b/test/prism/snapshots/seattlerb/parse_line_dot3.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_dstr_escaped_newline.txt b/test/prism/snapshots/seattlerb/parse_line_dstr_escaped_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_dstr_soft_newline.txt b/test/prism/snapshots/seattlerb/parse_line_dstr_soft_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_evstr_after_break.txt b/test/prism/snapshots/seattlerb/parse_line_evstr_after_break.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_hash_lit.txt b/test/prism/snapshots/seattlerb/parse_line_hash_lit.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_heredoc.txt b/test/prism/snapshots/seattlerb/parse_line_heredoc.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_heredoc_hardnewline.txt b/test/prism/snapshots/seattlerb/parse_line_heredoc_hardnewline.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_heredoc_regexp_chars.txt b/test/prism/snapshots/seattlerb/parse_line_heredoc_regexp_chars.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_iter_call_no_parens.txt b/test/prism/snapshots/seattlerb/parse_line_iter_call_no_parens.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_iter_call_parens.txt b/test/prism/snapshots/seattlerb/parse_line_iter_call_parens.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_multiline_str.txt b/test/prism/snapshots/seattlerb/parse_line_multiline_str.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_multiline_str_literal_n.txt b/test/prism/snapshots/seattlerb/parse_line_multiline_str_literal_n.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_newlines.txt b/test/prism/snapshots/seattlerb/parse_line_newlines.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_op_asgn.txt b/test/prism/snapshots/seattlerb/parse_line_op_asgn.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_postexe.txt b/test/prism/snapshots/seattlerb/parse_line_postexe.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_rescue.txt b/test/prism/snapshots/seattlerb/parse_line_rescue.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_return.txt b/test/prism/snapshots/seattlerb/parse_line_return.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_str_with_newline_escape.txt b/test/prism/snapshots/seattlerb/parse_line_str_with_newline_escape.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_to_ary.txt b/test/prism/snapshots/seattlerb/parse_line_to_ary.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_line_trailing_newlines.txt b/test/prism/snapshots/seattlerb/parse_line_trailing_newlines.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_opt_call_args_assocs_comma.txt b/test/prism/snapshots/seattlerb/parse_opt_call_args_assocs_comma.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_opt_call_args_lit_comma.txt b/test/prism/snapshots/seattlerb/parse_opt_call_args_lit_comma.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_pattern_019.txt b/test/prism/snapshots/seattlerb/parse_pattern_019.txt
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diff --git a/test/yarp/snapshots/seattlerb/parse_until_not_canonical.txt b/test/prism/snapshots/seattlerb/parse_until_not_canonical.txt
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diff --git a/test/yarp/snapshots/seattlerb/pctW_lineno.txt b/test/prism/snapshots/seattlerb/pctW_lineno.txt
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diff --git a/test/yarp/snapshots/seattlerb/pct_Q_backslash_nl.txt b/test/prism/snapshots/seattlerb/pct_Q_backslash_nl.txt
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diff --git a/test/yarp/snapshots/seattlerb/pct_nl.txt b/test/prism/snapshots/seattlerb/pct_nl.txt
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diff --git a/test/yarp/snapshots/seattlerb/pct_w_heredoc_interp_nested.txt b/test/prism/snapshots/seattlerb/pct_w_heredoc_interp_nested.txt
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diff --git a/test/yarp/snapshots/seattlerb/pipe_semicolon.txt b/test/prism/snapshots/seattlerb/pipe_semicolon.txt
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diff --git a/test/yarp/snapshots/seattlerb/pipe_space.txt b/test/prism/snapshots/seattlerb/pipe_space.txt
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diff --git a/test/yarp/snapshots/seattlerb/qWords_space.txt b/test/prism/snapshots/seattlerb/qWords_space.txt
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diff --git a/test/yarp/snapshots/seattlerb/qsymbols.txt b/test/prism/snapshots/seattlerb/qsymbols.txt
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diff --git a/test/yarp/snapshots/seattlerb/qsymbols_empty_space.txt b/test/prism/snapshots/seattlerb/qsymbols_empty_space.txt
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diff --git a/test/yarp/snapshots/seattlerb/qsymbols_interp.txt b/test/prism/snapshots/seattlerb/qsymbols_interp.txt
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diff --git a/test/yarp/snapshots/seattlerb/quoted_symbol_hash_arg.txt b/test/prism/snapshots/seattlerb/quoted_symbol_hash_arg.txt
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diff --git a/test/yarp/snapshots/seattlerb/quoted_symbol_keys.txt b/test/prism/snapshots/seattlerb/quoted_symbol_keys.txt
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diff --git a/test/yarp/snapshots/seattlerb/qw_escape.txt b/test/prism/snapshots/seattlerb/qw_escape.txt
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diff --git a/test/yarp/snapshots/seattlerb/qw_escape_term.txt b/test/prism/snapshots/seattlerb/qw_escape_term.txt
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diff --git a/test/yarp/snapshots/seattlerb/read_escape_unicode_curlies.txt b/test/prism/snapshots/seattlerb/read_escape_unicode_curlies.txt
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diff --git a/test/yarp/snapshots/seattlerb/read_escape_unicode_h4.txt b/test/prism/snapshots/seattlerb/read_escape_unicode_h4.txt
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diff --git a/test/yarp/snapshots/seattlerb/regexp.txt b/test/prism/snapshots/seattlerb/regexp.txt
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diff --git a/test/yarp/snapshots/seattlerb/regexp_esc_C_slash.txt b/test/prism/snapshots/seattlerb/regexp_esc_C_slash.txt
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diff --git a/test/yarp/snapshots/seattlerb/regexp_esc_u.txt b/test/prism/snapshots/seattlerb/regexp_esc_u.txt
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diff --git a/test/yarp/snapshots/seattlerb/regexp_escape_extended.txt b/test/prism/snapshots/seattlerb/regexp_escape_extended.txt
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diff --git a/test/yarp/snapshots/seattlerb/regexp_unicode_curlies.txt b/test/prism/snapshots/seattlerb/regexp_unicode_curlies.txt
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diff --git a/test/yarp/snapshots/seattlerb/required_kwarg_no_value.txt b/test/prism/snapshots/seattlerb/required_kwarg_no_value.txt
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diff --git a/test/yarp/snapshots/seattlerb/rescue_do_end_ensure_result.txt b/test/prism/snapshots/seattlerb/rescue_do_end_ensure_result.txt
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diff --git a/test/yarp/snapshots/seattlerb/rescue_do_end_no_raise.txt b/test/prism/snapshots/seattlerb/rescue_do_end_no_raise.txt
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diff --git a/test/yarp/snapshots/seattlerb/rescue_do_end_raised.txt b/test/prism/snapshots/seattlerb/rescue_do_end_raised.txt
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diff --git a/test/yarp/snapshots/seattlerb/rescue_do_end_rescued.txt b/test/prism/snapshots/seattlerb/rescue_do_end_rescued.txt
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diff --git a/test/yarp/snapshots/seattlerb/rescue_in_block.txt b/test/prism/snapshots/seattlerb/rescue_in_block.txt
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diff --git a/test/yarp/snapshots/seattlerb/rescue_parens.txt b/test/prism/snapshots/seattlerb/rescue_parens.txt
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diff --git a/test/yarp/snapshots/seattlerb/return_call_assocs.txt b/test/prism/snapshots/seattlerb/return_call_assocs.txt
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diff --git a/test/yarp/snapshots/seattlerb/rhs_asgn.txt b/test/prism/snapshots/seattlerb/rhs_asgn.txt
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diff --git a/test/yarp/snapshots/seattlerb/ruby21_numbers.txt b/test/prism/snapshots/seattlerb/ruby21_numbers.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_attrasgn.txt b/test/prism/snapshots/seattlerb/safe_attrasgn.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_call.txt b/test/prism/snapshots/seattlerb/safe_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_call_after_newline.txt b/test/prism/snapshots/seattlerb/safe_call_after_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_call_dot_parens.txt b/test/prism/snapshots/seattlerb/safe_call_dot_parens.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_call_newline.txt b/test/prism/snapshots/seattlerb/safe_call_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_call_operator.txt b/test/prism/snapshots/seattlerb/safe_call_operator.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_call_rhs_newline.txt b/test/prism/snapshots/seattlerb/safe_call_rhs_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_calls.txt b/test/prism/snapshots/seattlerb/safe_calls.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_op_asgn.txt b/test/prism/snapshots/seattlerb/safe_op_asgn.txt
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diff --git a/test/yarp/snapshots/seattlerb/safe_op_asgn2.txt b/test/prism/snapshots/seattlerb/safe_op_asgn2.txt
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diff --git a/test/yarp/snapshots/seattlerb/slashy_newlines_within_string.txt b/test/prism/snapshots/seattlerb/slashy_newlines_within_string.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_arg_no_paren.txt b/test/prism/snapshots/seattlerb/stabby_arg_no_paren.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_arg_opt_splat_arg_block_omfg.txt b/test/prism/snapshots/seattlerb/stabby_arg_opt_splat_arg_block_omfg.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_block_iter_call.txt b/test/prism/snapshots/seattlerb/stabby_block_iter_call.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_block_iter_call_no_target_with_arg.txt b/test/prism/snapshots/seattlerb/stabby_block_iter_call_no_target_with_arg.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_block_kw.txt b/test/prism/snapshots/seattlerb/stabby_block_kw.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_block_kw__required.txt b/test/prism/snapshots/seattlerb/stabby_block_kw__required.txt
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diff --git a/test/yarp/snapshots/seattlerb/stabby_proc_scope.txt b/test/prism/snapshots/seattlerb/stabby_proc_scope.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_backslashes.txt b/test/prism/snapshots/seattlerb/str_backslashes.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_double_double_escaped_newline.txt b/test/prism/snapshots/seattlerb/str_double_double_escaped_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_evstr.txt b/test/prism/snapshots/seattlerb/str_evstr.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_evstr_escape.txt b/test/prism/snapshots/seattlerb/str_evstr_escape.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_heredoc_interp.txt b/test/prism/snapshots/seattlerb/str_heredoc_interp.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_interp_ternary_or_label.txt b/test/prism/snapshots/seattlerb/str_interp_ternary_or_label.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_lit_concat_bad_encodings.txt b/test/prism/snapshots/seattlerb/str_lit_concat_bad_encodings.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_newline_hash_line_number.txt b/test/prism/snapshots/seattlerb/str_newline_hash_line_number.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_pct_Q_nested.txt b/test/prism/snapshots/seattlerb/str_pct_Q_nested.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_pct_nested_nested.txt b/test/prism/snapshots/seattlerb/str_pct_nested_nested.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_pct_q.txt b/test/prism/snapshots/seattlerb/str_pct_q.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_single_double_escaped_newline.txt b/test/prism/snapshots/seattlerb/str_single_double_escaped_newline.txt
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diff --git a/test/yarp/snapshots/seattlerb/str_str.txt b/test/prism/snapshots/seattlerb/str_str.txt
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diff --git a/test/yarp/snapshots/seattlerb/super_arg.txt b/test/prism/snapshots/seattlerb/super_arg.txt
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diff --git a/test/yarp/snapshots/seattlerb/symbol_empty.txt b/test/prism/snapshots/seattlerb/symbol_empty.txt
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rename from test/yarp/snapshots/whitequark/send_index_cmd.txt
rename to test/prism/snapshots/whitequark/send_index_cmd.txt
diff --git a/test/yarp/snapshots/whitequark/send_index_legacy.txt b/test/prism/snapshots/whitequark/send_index_legacy.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_index_legacy.txt
rename to test/prism/snapshots/whitequark/send_index_legacy.txt
diff --git a/test/yarp/snapshots/whitequark/send_lambda.txt b/test/prism/snapshots/whitequark/send_lambda.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_lambda.txt
rename to test/prism/snapshots/whitequark/send_lambda.txt
diff --git a/test/yarp/snapshots/whitequark/send_lambda_args.txt b/test/prism/snapshots/whitequark/send_lambda_args.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_lambda_args.txt
rename to test/prism/snapshots/whitequark/send_lambda_args.txt
diff --git a/test/yarp/snapshots/whitequark/send_lambda_args_noparen.txt b/test/prism/snapshots/whitequark/send_lambda_args_noparen.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_lambda_args_noparen.txt
rename to test/prism/snapshots/whitequark/send_lambda_args_noparen.txt
diff --git a/test/yarp/snapshots/whitequark/send_lambda_args_shadow.txt b/test/prism/snapshots/whitequark/send_lambda_args_shadow.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_lambda_args_shadow.txt
rename to test/prism/snapshots/whitequark/send_lambda_args_shadow.txt
diff --git a/test/yarp/snapshots/whitequark/send_lambda_legacy.txt b/test/prism/snapshots/whitequark/send_lambda_legacy.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_lambda_legacy.txt
rename to test/prism/snapshots/whitequark/send_lambda_legacy.txt
diff --git a/test/yarp/snapshots/whitequark/send_op_asgn_conditional.txt b/test/prism/snapshots/whitequark/send_op_asgn_conditional.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_op_asgn_conditional.txt
rename to test/prism/snapshots/whitequark/send_op_asgn_conditional.txt
diff --git a/test/yarp/snapshots/whitequark/send_plain.txt b/test/prism/snapshots/whitequark/send_plain.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_plain.txt
rename to test/prism/snapshots/whitequark/send_plain.txt
diff --git a/test/yarp/snapshots/whitequark/send_plain_cmd.txt b/test/prism/snapshots/whitequark/send_plain_cmd.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_plain_cmd.txt
rename to test/prism/snapshots/whitequark/send_plain_cmd.txt
diff --git a/test/yarp/snapshots/whitequark/send_self.txt b/test/prism/snapshots/whitequark/send_self.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_self.txt
rename to test/prism/snapshots/whitequark/send_self.txt
diff --git a/test/yarp/snapshots/whitequark/send_self_block.txt b/test/prism/snapshots/whitequark/send_self_block.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_self_block.txt
rename to test/prism/snapshots/whitequark/send_self_block.txt
diff --git a/test/yarp/snapshots/whitequark/send_unary_op.txt b/test/prism/snapshots/whitequark/send_unary_op.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/send_unary_op.txt
rename to test/prism/snapshots/whitequark/send_unary_op.txt
diff --git a/test/yarp/snapshots/whitequark/slash_newline_in_heredocs.txt b/test/prism/snapshots/whitequark/slash_newline_in_heredocs.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/slash_newline_in_heredocs.txt
rename to test/prism/snapshots/whitequark/slash_newline_in_heredocs.txt
diff --git a/test/yarp/snapshots/whitequark/space_args_arg.txt b/test/prism/snapshots/whitequark/space_args_arg.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/space_args_arg.txt
rename to test/prism/snapshots/whitequark/space_args_arg.txt
diff --git a/test/yarp/snapshots/whitequark/space_args_arg_block.txt b/test/prism/snapshots/whitequark/space_args_arg_block.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/space_args_arg_block.txt
rename to test/prism/snapshots/whitequark/space_args_arg_block.txt
diff --git a/test/yarp/snapshots/whitequark/space_args_arg_call.txt b/test/prism/snapshots/whitequark/space_args_arg_call.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/space_args_arg_call.txt
rename to test/prism/snapshots/whitequark/space_args_arg_call.txt
diff --git a/test/yarp/snapshots/whitequark/space_args_arg_newline.txt b/test/prism/snapshots/whitequark/space_args_arg_newline.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/space_args_arg_newline.txt
rename to test/prism/snapshots/whitequark/space_args_arg_newline.txt
diff --git a/test/yarp/snapshots/whitequark/space_args_block.txt b/test/prism/snapshots/whitequark/space_args_block.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/space_args_block.txt
rename to test/prism/snapshots/whitequark/space_args_block.txt
diff --git a/test/yarp/snapshots/whitequark/space_args_cmd.txt b/test/prism/snapshots/whitequark/space_args_cmd.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/space_args_cmd.txt
rename to test/prism/snapshots/whitequark/space_args_cmd.txt
diff --git a/test/yarp/snapshots/whitequark/string___FILE__.txt b/test/prism/snapshots/whitequark/string___FILE__.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/string___FILE__.txt
rename to test/prism/snapshots/whitequark/string___FILE__.txt
diff --git a/test/yarp/snapshots/whitequark/string_concat.txt b/test/prism/snapshots/whitequark/string_concat.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/string_concat.txt
rename to test/prism/snapshots/whitequark/string_concat.txt
diff --git a/test/yarp/snapshots/whitequark/string_dvar.txt b/test/prism/snapshots/whitequark/string_dvar.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/string_dvar.txt
rename to test/prism/snapshots/whitequark/string_dvar.txt
diff --git a/test/yarp/snapshots/whitequark/string_interp.txt b/test/prism/snapshots/whitequark/string_interp.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/string_interp.txt
rename to test/prism/snapshots/whitequark/string_interp.txt
diff --git a/test/yarp/snapshots/whitequark/string_plain.txt b/test/prism/snapshots/whitequark/string_plain.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/string_plain.txt
rename to test/prism/snapshots/whitequark/string_plain.txt
diff --git a/test/yarp/snapshots/whitequark/super.txt b/test/prism/snapshots/whitequark/super.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/super.txt
rename to test/prism/snapshots/whitequark/super.txt
diff --git a/test/yarp/snapshots/whitequark/super_block.txt b/test/prism/snapshots/whitequark/super_block.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/super_block.txt
rename to test/prism/snapshots/whitequark/super_block.txt
diff --git a/test/yarp/snapshots/whitequark/symbol_interp.txt b/test/prism/snapshots/whitequark/symbol_interp.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/symbol_interp.txt
rename to test/prism/snapshots/whitequark/symbol_interp.txt
diff --git a/test/yarp/snapshots/whitequark/symbol_plain.txt b/test/prism/snapshots/whitequark/symbol_plain.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/symbol_plain.txt
rename to test/prism/snapshots/whitequark/symbol_plain.txt
diff --git a/test/yarp/snapshots/whitequark/ternary.txt b/test/prism/snapshots/whitequark/ternary.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/ternary.txt
rename to test/prism/snapshots/whitequark/ternary.txt
diff --git a/test/yarp/snapshots/whitequark/ternary_ambiguous_symbol.txt b/test/prism/snapshots/whitequark/ternary_ambiguous_symbol.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/ternary_ambiguous_symbol.txt
rename to test/prism/snapshots/whitequark/ternary_ambiguous_symbol.txt
diff --git a/test/yarp/snapshots/whitequark/trailing_forward_arg.txt b/test/prism/snapshots/whitequark/trailing_forward_arg.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/trailing_forward_arg.txt
rename to test/prism/snapshots/whitequark/trailing_forward_arg.txt
diff --git a/test/yarp/snapshots/whitequark/true.txt b/test/prism/snapshots/whitequark/true.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/true.txt
rename to test/prism/snapshots/whitequark/true.txt
diff --git a/test/yarp/snapshots/whitequark/unary_num_pow_precedence.txt b/test/prism/snapshots/whitequark/unary_num_pow_precedence.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/unary_num_pow_precedence.txt
rename to test/prism/snapshots/whitequark/unary_num_pow_precedence.txt
diff --git a/test/yarp/snapshots/whitequark/undef.txt b/test/prism/snapshots/whitequark/undef.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/undef.txt
rename to test/prism/snapshots/whitequark/undef.txt
diff --git a/test/yarp/snapshots/whitequark/unless.txt b/test/prism/snapshots/whitequark/unless.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/unless.txt
rename to test/prism/snapshots/whitequark/unless.txt
diff --git a/test/yarp/snapshots/whitequark/unless_else.txt b/test/prism/snapshots/whitequark/unless_else.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/unless_else.txt
rename to test/prism/snapshots/whitequark/unless_else.txt
diff --git a/test/yarp/snapshots/whitequark/unless_mod.txt b/test/prism/snapshots/whitequark/unless_mod.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/unless_mod.txt
rename to test/prism/snapshots/whitequark/unless_mod.txt
diff --git a/test/yarp/snapshots/whitequark/until.txt b/test/prism/snapshots/whitequark/until.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/until.txt
rename to test/prism/snapshots/whitequark/until.txt
diff --git a/test/yarp/snapshots/whitequark/until_mod.txt b/test/prism/snapshots/whitequark/until_mod.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/until_mod.txt
rename to test/prism/snapshots/whitequark/until_mod.txt
diff --git a/test/yarp/snapshots/whitequark/until_post.txt b/test/prism/snapshots/whitequark/until_post.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/until_post.txt
rename to test/prism/snapshots/whitequark/until_post.txt
diff --git a/test/yarp/snapshots/whitequark/var_and_asgn.txt b/test/prism/snapshots/whitequark/var_and_asgn.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/var_and_asgn.txt
rename to test/prism/snapshots/whitequark/var_and_asgn.txt
diff --git a/test/yarp/snapshots/whitequark/var_op_asgn.txt b/test/prism/snapshots/whitequark/var_op_asgn.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/var_op_asgn.txt
rename to test/prism/snapshots/whitequark/var_op_asgn.txt
diff --git a/test/yarp/snapshots/whitequark/var_op_asgn_cmd.txt b/test/prism/snapshots/whitequark/var_op_asgn_cmd.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/var_op_asgn_cmd.txt
rename to test/prism/snapshots/whitequark/var_op_asgn_cmd.txt
diff --git a/test/yarp/snapshots/whitequark/var_or_asgn.txt b/test/prism/snapshots/whitequark/var_or_asgn.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/var_or_asgn.txt
rename to test/prism/snapshots/whitequark/var_or_asgn.txt
diff --git a/test/yarp/snapshots/whitequark/when_multi.txt b/test/prism/snapshots/whitequark/when_multi.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/when_multi.txt
rename to test/prism/snapshots/whitequark/when_multi.txt
diff --git a/test/yarp/snapshots/whitequark/when_splat.txt b/test/prism/snapshots/whitequark/when_splat.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/when_splat.txt
rename to test/prism/snapshots/whitequark/when_splat.txt
diff --git a/test/yarp/snapshots/whitequark/when_then.txt b/test/prism/snapshots/whitequark/when_then.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/when_then.txt
rename to test/prism/snapshots/whitequark/when_then.txt
diff --git a/test/yarp/snapshots/whitequark/while.txt b/test/prism/snapshots/whitequark/while.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/while.txt
rename to test/prism/snapshots/whitequark/while.txt
diff --git a/test/yarp/snapshots/whitequark/while_mod.txt b/test/prism/snapshots/whitequark/while_mod.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/while_mod.txt
rename to test/prism/snapshots/whitequark/while_mod.txt
diff --git a/test/yarp/snapshots/whitequark/while_post.txt b/test/prism/snapshots/whitequark/while_post.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/while_post.txt
rename to test/prism/snapshots/whitequark/while_post.txt
diff --git a/test/yarp/snapshots/whitequark/xstring_interp.txt b/test/prism/snapshots/whitequark/xstring_interp.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/xstring_interp.txt
rename to test/prism/snapshots/whitequark/xstring_interp.txt
diff --git a/test/yarp/snapshots/whitequark/xstring_plain.txt b/test/prism/snapshots/whitequark/xstring_plain.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/xstring_plain.txt
rename to test/prism/snapshots/whitequark/xstring_plain.txt
diff --git a/test/yarp/snapshots/whitequark/yield.txt b/test/prism/snapshots/whitequark/yield.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/yield.txt
rename to test/prism/snapshots/whitequark/yield.txt
diff --git a/test/yarp/snapshots/whitequark/zsuper.txt b/test/prism/snapshots/whitequark/zsuper.txt
similarity index 100%
rename from test/yarp/snapshots/whitequark/zsuper.txt
rename to test/prism/snapshots/whitequark/zsuper.txt
diff --git a/test/yarp/snapshots/xstring.txt b/test/prism/snapshots/xstring.txt
similarity index 100%
rename from test/yarp/snapshots/xstring.txt
rename to test/prism/snapshots/xstring.txt
diff --git a/test/yarp/snapshots/yield.txt b/test/prism/snapshots/yield.txt
similarity index 100%
rename from test/yarp/snapshots/yield.txt
rename to test/prism/snapshots/yield.txt
diff --git a/test/yarp/test_helper.rb b/test/prism/test_helper.rb
similarity index 100%
rename from test/yarp/test_helper.rb
rename to test/prism/test_helper.rb
diff --git a/test/yarp/unescape_test.rb b/test/prism/unescape_test.rb
similarity index 100%
rename from test/yarp/unescape_test.rb
rename to test/prism/unescape_test.rb
diff --git a/test/yarp/version_test.rb b/test/prism/version_test.rb
similarity index 100%
rename from test/yarp/version_test.rb
rename to test/prism/version_test.rb
diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index c3d010f82a..4f8dba5ad3 100755
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -398,31 +398,31 @@ module SyncDefaultGems
       cp_r("#{upstream}/spec", "spec/syntax_suggest")
       cp_r("#{upstream}/exe/syntax_suggest", "libexec/syntax_suggest")
     when "yarp"
-      # We don't want to remove YARP-specific files that existing in ruby/ruby
-      # that do not exist in ruby/yarp, so we temporarily move them out of the
-      # yarp dir, wipe the yarp dir, and then put them back.
-      mv("yarp/yarp_init.c", ".")
-      mv("yarp/yarp_compiler.c", ".")
-      mv("test/yarp/iseq_test.rb", ".")
-      rm_rf(%w[test/yarp yarp])
+      # We don't want to remove prism-specific files that existing in ruby/ruby
+      # that do not exist in ruby/prism, so we temporarily move them out of the
+      # prism dir, wipe the prism dir, and then put them back.
+      mv("prism/prism_init.c", ".")
+      mv("prism/prism_compiler.c", ".")
+      mv("test/prism/iseq_test.rb", ".")
+      rm_rf(%w[test/prism prism])
 
-      cp_r("#{upstream}/ext/yarp", "yarp")
+      cp_r("#{upstream}/ext/prism", "prism")
       cp_r("#{upstream}/lib/.", "lib")
-      cp_r("#{upstream}/test/yarp", "test")
-      cp_r("#{upstream}/src/.", "yarp")
+      cp_r("#{upstream}/test/prism", "test")
+      cp_r("#{upstream}/src/.", "prism")
 
-      cp_r("#{upstream}/yarp.gemspec", "lib/yarp")
-      cp_r("#{upstream}/include/yarp/.", "yarp")
-      cp_r("#{upstream}/include/yarp.h", "yarp")
+      cp_r("#{upstream}/prism.gemspec", "lib/prism")
+      cp_r("#{upstream}/include/prism/.", "prism")
+      cp_r("#{upstream}/include/prism.h", "prism")
 
-      cp_r("#{upstream}/config.yml", "yarp/")
-      cp_r("#{upstream}/templates", "yarp/")
-      rm_rf("yarp/templates/java")
+      cp_r("#{upstream}/config.yml", "prism/")
+      cp_r("#{upstream}/templates", "prism/")
+      rm_rf("prism/templates/java")
 
-      rm("yarp/extconf.rb")
-      mv("yarp_init.c", "yarp/")
-      mv("yarp_compiler.c", "yarp/")
-      mv("iseq_test.rb", "test/yarp/")
+      rm("prism/extconf.rb")
+      mv("prism_init.c", "prism/")
+      mv("prism_compiler.c", "prism/")
+      mv("iseq_test.rb", "test/prism/")
     else
       sync_lib gem, upstream
     end