Comment 3 for bug 1488939

From the procps man page:
  The -L flag is Linux-specific.

Also I would expect that the long options might be special or new, so I'm not sure how willing bash will be to take a modification for this.

BTW - these are the allowed parameters from the bash Doc
Options:
  -s sig SIG is a signal name
  -n sig SIG is a signal number
  -l list the signal names; if arguments follow `-l' they are
        assumed to be signal numbers for which names should be listed