BSD Commit Log Search

   Finish (hopefully) the second half of 1.47 ... make sure
   that when traps are marked as invalid, we never use them
   for anything except output from the trap command.

   Fixes issues where sub-shells of shells which use traps
   (eg: to trap SIGPIPE) can end up looping forever if the
   signal occurs in a sub-shell (where the trap is supposed
   to be reset to its default).   Reported, and mostly
   analyzed by Martijn Dekker.

UnifiedSplitRaw