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.  The form is chosen so as to minimize the dif-
       ferences from the default options for the current emulation (the
       default  emulation  being  native  zsh,  shown  as <Z> in zshop-
       tions(1)).  Options that are on by default for the emulation are
       shown  with  the  prefix  no  only  if they are off, while other
       options are shown without the prefix no and only if they are on.
       In  addition  to  options  changed from the default state by the
       user, any options activated  automatically  by  the  shell  (for
       example,  SHIN_STDIN  or INTERACTIVE) will be shown in the list.
       The format is further modified by the  option  KSH_OPTION_PRINT,
       however  the  rationale for choosing options with or without the
       no prefix remains the same in this case.

       If the -m flag is given the  arguments  are  taken  as  patterns
       (which  should  be  quoted  to protect them from filename expan-
       sion), and all options with names matching  these  patterns  are
       set.

       Note  that  a bad option name does not cause execution of subse-
       quent shell code to be aborted; this is behaviour  is  different
       from  that  of  `set  -o'.  This is because set is regarded as a
       special builtin by the POSIX standard, but setopt is not.
