Issue #19190 has been updated by hsbt (Hiroshi SHIBATA). FYI: This issue has been fixed at racc-1.6.1 https://github.com/ruby/racc/commit/65cd26efd88e013c532c223fe9ab9ea4d0c93271 ---------------------------------------- Bug #19190: `Regexp.compile('regexp', 'n')` raises `unknown regexp option: n (ArgumentError)` https://bugs.ruby-lang.org/issues/19190#change-100517 * Author: koic (Koichi ITO) * Status: Open * Priority: Normal * ruby -v: ruby 3.2.0dev (2022-12-07T03:32:29Z master bcd8b2f00a) [x86_64-darwin19] * Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN ---------------------------------------- I get the following unexpected error when using Ruby 3.2.0-dev. ## Expected (Ruby 3.1 and prior) No errors: ```console % ruby -ve "Regexp.compile('regexp', 'n')" ruby 3.1.3p185 (2022-11-24 revision 1a6b16756e) [x86_64-darwin19] ``` ## Actual (Ruby 3.2.0-dev) An unexpected error occurs. ```console % ruby -ve "Regexp.compile('regexp', 'n')" ruby 3.2.0dev (2022-12-07T03:32:29Z master bcd8b2f00a) [x86_64-darwin19] -e:1:in `initialize': unknown regexp option: n (ArgumentError) Regexp.compile('regexp', 'n') ^^^^^^^^^^^^^ from -e:1:in `compile' from -e:1:in `<main>' ``` ## Context I encountered the following error when developing the Parser gem with Ruby 3.2.0-dev. This is not encountered in Ruby 3.1. ```console % cd whitequark/parser % bundle exec rake racc --superclass=Parser::Base lib/parser/ruby32.y -o lib/parser/ruby32.rb --no-line-convert /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:219:in `initialize': unknown regexp option: n (ArgumentError) Regexp.compile(map, 'n') ^^^^^^^^ from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:219:in `compile' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:219:in `mkmapexp' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:179:in `addent' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:122:in `block in gen_action_tables' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/state.rb:56:in `each' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/state.rb:56:in `each_state' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:112:in `gen_action_tables' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:72:in `generate' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/statetransitiontable.rb:35:in `generate' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/state.rb:93:in `state_transition_table' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/grammar.rb:153:in `parser_class' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/grammarfileparser.rb:144:in `<module:Racc>' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/grammarfileparser.rb:20:in `<top (required)>' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/static.rb:3:in `require' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/lib/racc/static.rb:3:in `<top (required)>' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/bin/racc:11:in `require' from /Users/koic/.rbenv/versions/3.2.0-dev/lib/ruby/gems/3.2.0+3/gems/racc-1.6.0/bin/racc:11:in `<top (required)>' from /Users/koic/.rbenv/versions/3.2.0-dev/bin/racc:25:in `load' from /Users/koic/.rbenv/versions/3.2.0-dev/bin/racc:25:in `<main>' rake aborted! Command failed with status (1): [racc --superclass=Parser::Base lib/parser/...] /Users/koic/src/github.com/whitequark/parser/Rakefile:166:in `block in <top (required)>' /Users/koic/.rbenv/versions/3.2.0-dev/bin/bundle:25:in `load' /Users/koic/.rbenv/versions/3.2.0-dev/bin/bundle:25:in `<main>' Tasks: TOP => default => test => generate => lib/parser/ruby32.rb (See full trace by running task with --trace) ``` -- https://bugs.ruby-lang.org/