- └─────result: primary_hostname: myhost.test.ex
- ┌considering: match: ${if match{abcd}{\N^([ab]+)(\w+)$\N}{$2$1}fail}
- ┌considering: abcd}{\N^([ab]+)(\w+)$\N}{$2$1}fail}
+ ╰─────result: primary_hostname: myhost.test.ex
+ ╭considering: sender_address: $sender_address
+ ├──expanding: sender_address: $sender_address
+ ╰─────result: sender_address: sndr@dom
+ ╰──(tainted)
+ ╭considering: match: ${if match{abcd}{\N^([ab]+)(\w+)$\N}{$2$1}fail}
+ ╭considering: abcd}{\N^([ab]+)(\w+)$\N}{$2$1}fail}