No they don't exactly follow semantic versioning, which is as useful as not following semantic versioning at all.

Specifically, I believe they're planning on breaking API compatibility within major version numbers.

> Specifically, I believe they're planning on breaking API compatibility within major version numbers.

Yes. Full details: https://www.ruby-lang.org/en/news/2013/12/21/semantic-versio...

> Semantic Versioning starting with Ruby 2.1.0

> MINOR: increased every christmas, may be API incompatible

That is not semantic versioning.

I know :'(

The PATCH version is the "number of commits since last MINOR release (will be reset at 0 when releasing MINOR)" — https://www.ruby-lang.org/en/news/2013/12/21/semantic-versio...