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priority is one of: EMERG, ALERT, CRIT, ERR, WARNING, NOTICE, INFO (default), or DEBUG

R$* @ $*	$: $(name "Username was " $1 $) $1 @ $2

# set macro ${MyMacro} to the ruleset match
R$+		$: $(name {MyMacro} $@ $1 $) $1

# set macro ${MyMacro} to an empty string
R$*		$: $(name {MyMacro} $@ $) $1		

# clear macro ${MyMacro}
R$-		$: $(name {MyMacro} $) $1		

• operations: + - * / = l
  • l is less than
• returns result of operation
• Examples:
  • $(arith l $@ 4 $@ 2 $) returns FALSE
  • $(arith + $@ 4 $@ 2 $) return 6