Forums Feature Suggestions Double $$

from mirc.hlp:

i think that it would be pretty handfull if we could specify a command to be executed, if the requested parameter was $null (something like $iif).

I think you pretty much solved your own problem. Just use $iif.

$iif($blah,$blah,bleh)

I'd use $iif($blah,$ifmatch,bleh) as in most cases the $blah is more like $blah($bloh($blih),$bluh).bleh