Ruby supports this too but it will be removed in the future (3.0). The preview doesn't show a warning but 2.0 will. Source: https://bugs.ruby-lang.org/issues/6

Ruby supports this too but it will be removed in the future (3.0). The preview doesn't show a warning but 2.0 will. Source: https://bugs.ruby-lang.org/issues/6265 https://bugs.ruby-lang.org/issues/6265 Btw, PRI_LL_PREFIX is defined in Ruby's config.h.