Lindrian commented on a Page, Notify Script  -  Nov 17, 2007

Sorry for the doubble post, but you can use set -u instead of using a timer to remove the variable.
/help /set

Also; this is how id code it:

on *:TEXT:*:*: {
  if ($highlight($1-)) {
    if (($version == 6.31) && (!%tip. [ $+ [ $nick ] ])) {
      noop $tip(\'Tray Tip\', $nick , $nick just said your name in $chan with the following message:, 10)
      noop $tip(\'Tray Tip\', Message, $1-, 10)
      beep
      set -u20 %tip. [ $+ [ $nick ] ] true
    }
    else {
      beep
    }
  }
}
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