Author : friedl

When using control structures to create some case filtering, there are some things to consider when formatting this.

In general, a control structure can be as simple as this:

if $msg contains "word" then 
    action()
else
    action()

While this is correct and will work as expected, it is generally better style to encase expressions and actions. That way, they are more clearly separated from the control structure itself for better overview and can be more easily expanded without error. When using multiple actions or expressions, encasing is needed anyway, so we think it’s good practice to always use it.

Example:

if ($msg contains "word") then {
    action() 
} else {
    action()
}

And a more complex example:

if ($msg contains "word" and $source == "123.123.123.123") then {
    action()
    action()
} else {
    action()
    action()
}

All three sample snippets above are correct in their own way. Added complexity makes encasing necessary though. So, you may as well use it for all your filters to have a consistent and all-case proof configuration.