Short: notify_fail() returns int
From: Matthew Julius <julius.2@wright.edu>
Date: Fri, 08 Jan 1999 16:29:08 -0500
Type: Feature
State: Done - implemented in 3.2-dev.59

int notify_fail(closure|string)
  Returns 0 by default.
  If I ever see return notify_fail(msg), 0; again it will be too soon.