[ruby/stringio] Drop support for ruby 2.6 or earlier (https://github.com/ruby/stringio/pull/47)
rb_io_extract_modeenc has been exported since ruby 2.7.
rb_io_extract_modeenc
Added by nobu (Nobuyoshi Nakada) about 2 years ago
[ruby/stringio] Drop support for ruby 2.6 or earlier
(https://github.com/ruby/stringio/pull/47)
rb_io_extract_modeenchas been exported since ruby 2.7.