TL;DRBackticks with echo in RainerScript now support brace-style environment variables (${VAR}) and adjacent text (e.g., `echo sasl.password=${KAFKA_PASSWORD}`). This removes a common pitfall when assembling key=value pairs for modules like omkafka. It’s still a limited, intentional subset—not a full shell. The change was motivated by real-world confusion reported in issue #5827. (GitHub) What changed (and why) […] The post Backticks in RainerScript just got smarter: ${VAR} and adjacent...
