tools/regression/bin/sh/builtins/trap5.0

   1 # $FreeBSD: head/tools/regression/bin/sh/builtins/trap5.0 217461 2011-01-15 21:09:00Z jilles $
   2
   3 set -e
   4 trap - USR1
   5 initial=$(trap)
   6 trap -- -l USR1
   7 added=$(trap)
   8 [ -n "$added" ]
   9 trap - USR1
  10 second=$(trap)
  11 [ "$initial" = "$second" ]
  12 eval "$added"
  13 added2=$(trap)
  14 added3=$(trap --)
  15 [ "$added" = "$added2" ]
  16 [ "$added2" = "$added3" ]
  17 trap -- - USR1
  18 third=$(trap)
  19 [ "$initial" = "$third" ]