setopt [ {+|-}options | {+|-}o option name ] [ name ... ]
       Set the options for the shell.   All  options  specified  either
       with  flags  or  by name are set.  If no arguments are supplied,
       the names of all options currently set are printed.  If  the  -m
       flag  is given the arguments are taken as patterns (which should
       be quoted to protect them  from  filename  expansion),  and  all
       options with names matching these patterns are set.
