ruby-rdiscount 2.1.8-1build3 (arm64 binary) in ubuntu bionic

 Discount is an implementation of John Gruber's Markdown markup language in C.
 It implements all of the language described in the markdown syntax document
 and passes the Markdown 1.0 test suite.
 .
 RDiscount is a Ruby extension library for Discount. It can be used as a
 stand-alone program or within another Ruby program.