Unicode Version Mapping

The Ruby core team cares a lot about Unicode, and this is why we have pretty good Unicode support in the language.

Even though the Unicode standard evolves constantly - it gets updated at least once a year - Ruby's Unicode support is often only a little bit behind the current version of Unicode. The following tables list which Ruby version supports which version of Unicode / Emoji:

Ruby / Unicode

Ruby Version Unicode Version
2.7 12.1.0
2.6.3+ 12.1.0¹
2.6.2 12.0.0
2.6.1- 11.0.0
2.5 10.0.0
2.4 9.0.0
2.3 8.0.0
2.2 7.0.0
2.1 6.1.0
2.0 6.1.0
1.9 5.2.0

¹ Unicode 12.1 introduced a single character

Starting with Ruby 2.4, you can find out your Ruby version's Unicode support with:

RbConfig::CONFIG["UNICODE_VERSION"]

Ruby / Emoji

Ruby Version Emoji Version
2.7 12.1
2.6.2+ 12.0
2.6.1- 11.0
2.5 5.0

Starting with Ruby 2.6, you can find out your Ruby version's Emoji support with:

RbConfig::CONFIG["UNICODE_EMOJI_VERSION"]

Also See

More Idiosyncratic Ruby