Originally Posted By: sparta
if i userstand it right the :error will only be used if a error occur? $error return nothing.
Not exactly, ":error" is just a goto label (mIRC jumps to it automatically if there is an error) but like any goto label, if the script doesn't /return before it reaches that point, whatever follows will still be executed.

For example, this will echo the error line even though there is obviously no error
Code:
alias sparta1 {
  noop
  :error
  echo -ag Error: [sparta1]
  reseterror
}
This time because we check that there is an error, it won't. wink
Code:
alias sparta2 {
  noop
  :error
  if ($error) {
    echo -ag Error: [sparta2]
    reseterror
  }
}
The /reseterror command must come after you check for $error.