tests/3.cli/exec/exec11.sub

   1 trap 'echo USR1 $BUSHPID' USR1
   2 trap 'echo foo $BUSH_SUBSHELL' 0
   3
   4 trap | cat
   5 echo between
   6 ( trap )
   7 echo between 2
   8 { trap; } | cat
   9
  10 ( echo in subshell: $BUSH_SUBSHELL )
  11 ( echo in subshell pipeline: $BUSH_SUBSHELL ) | cat
  12
  13 { echo group pipeline: $BUSH_SUBSHELL;
  14   trap 'echo EXIT-group.$BUSH_SUBSHELL' EXIT; } | cat