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Because `syntax_suggest` is a default gem you can get conflicts when working on this project with Ruby 3.2+. To fix conflicts you can disable loading `syntax_suggest` as a default gem by using then environment variable `RUBYOPT` with the value `--disable=syntax_suggest`. The `RUBYOPT` environment variable works the same as if we had entered those flags directly in the ruby cli (i.e. `ruby --disable=syntax_suggest` is the same as `RUBYOPT="--disable=syntax_suggest" ruby`). It's needed because we don't always directly execute Ruby and RUBYOPT will be picked up when other commands load ruby (`rspec`, `rake`, or `bundle` etc.). There are some binstubs that already have this done for you. Instead of running `bundle exec rake` you can run `bin/rake`. Binstubs provided: - `bin/rake` - `bin/rspec` https://github.com/ruby/syntax_suggest/commit/342093706d