RainerScript is a typeless language. That doesn’t imply you don’t need to care about types. Of course, expressions like “A” + “B” will not return a valid result, as you can’t really add two letters (to concatenate them, use the concatenation operator &). However, all type conversions are automatically done by the script interpreter when there is need to do so.
Help with configuring/using
Mailing list - best route for general questions
GitHub: rsyslog source project - detailed questions, reporting issues that are believed to be bugs with
Stack Exchange (View, Ask) - experimental support from rsyslog community
Source project: rsyslog project README.
Documentation: rsyslog-doc project README
Copyright 2008-2020 Rainer Gerhards (Großrinderfeld), and Others.