if 94 is an unreasonable limit (lol laugh) you could take advantage of error handling:

Code:
alias blink {
  bset -t &blink 1 $*
  ; code
  return
  :error
  reseterror
  ; null parameter exists
}


edit: then theres that bug with using $* twice in the same routine :P oh well, could always retokenize but kinda defeats the purpose.. :S

"The only excuse for making a useless script is that one admires it intensely" - Oscar Wilde