Provided by: zsh_4.3.17-1ubuntu1_i386 bug

NAME

       zshoptions - zsh options

SPECIFYING OPTIONS

       Options  are  primarily  referred  to  by  name.   These names are case
       insensitive and underscores are ignored.  For example,  `allexport'  is
       equivalent to `A__lleXP_ort'.

       The  sense of an option name may be inverted by preceding it with `no',
       so `setopt No_Beep' is equivalent to `unsetopt beep'.   This  inversion
       can  only  be  done  once,  so  `nonobeep' is not a synonym for `beep'.
       Similarly, `tify' is not a synonym for  `nonotify'  (the  inversion  of
       `notify').

       Some  options also have one or more single letter names.  There are two
       sets of single letter options: one used by default, and another used to
       emulate  sh/ksh  (used  when the SH_OPTION_LETTERS option is set).  The
       single letter options can be used on the shell command  line,  or  with
       the  set, setopt and unsetopt builtins, as normal Unix options preceded
       by `-'.

       The sense of the single letter options may be  inverted  by  using  `+'
       instead  of  `-'.   Some  of the single letter option names refer to an
       option being off, in which case the inversion of that  name  refers  to
       the  option  being  on.  For example, `+n' is the short name of `exec',
       and `-n' is the short name of its inversion, `noexec'.

       In strings of single letter options supplied to the shell  at  startup,
       trailing  whitespace  will  be ignored; for example the string `-f    '
       will be treated just as `-f', but the string `-f i' is an error.   This
       is  because many systems which implement the `#!' mechanism for calling
       scripts do not strip trailing whitespace.

DESCRIPTION OF OPTIONS

       In the following list, options set by default  in  all  emulations  are
       marked  <D>;  those  set  by  default  only  in  csh,  ksh,  sh, or zsh
       emulations are marked <C>, <K>, <S>, <Z> as appropriate.  When  listing
       options  (by  `setopt', `unsetopt', `set -o' or `set +o'), those turned
       on by default appear in the list prefixed  with  `no'.   Hence  (unless
       KSH_OPTION_PRINT is set), `setopt' shows all options whose settings are
       changed from the default.

   Changing Directories
       AUTO_CD (-J)
              If a command is issued  that  can't  be  executed  as  a  normal
              command, and the command is the name of a directory, perform the
              cd command to that directory.

       AUTO_PUSHD (-N)
              Make cd push the old directory onto the directory stack.

       CDABLE_VARS (-T)
              If the argument to a cd command  (or  an  implied  cd  with  the
              AUTO_CD  option set) is not a directory, and does not begin with
              a slash, try to expand the expression as if it were preceded  by
              a `~' (see the section `Filename Expansion').

       CHASE_DOTS
              When  changing  to  a  directory  containing a path segment `..'
              which would otherwise  be  treated  as  canceling  the  previous
              segment  in  the path (in other words, `foo/..' would be removed
              from the path, or if `..' is the first part  of  the  path,  the
              last  part  of  the current working directory would be removed),
              instead resolve the path to the physical directory.  This option
              is overridden by CHASE_LINKS.

              For  example,  suppose  /foo/bar  is  a  link  to  the directory
              /alt/rod.  Without this option set, `cd /foo/bar/..' changes  to
              /foo;  with it set, it changes to /alt.  The same applies if the
              current directory is /foo/bar and `cd ..' is  used.   Note  that
              all other symbolic links in the path will also be resolved.

       CHASE_LINKS (-w)
              Resolve  symbolic  links  to  their  true  values  when changing
              directory.  This also has the effect of CHASE_DOTS, i.e. a  `..'
              path  segment  will  be  treated  as  referring  to the physical
              parent, even if the preceding path segment is a symbolic link.

       POSIX_CD
              Modifies the behaviour of cd, chdir and pushd commands  to  make
              them more compatible with the POSIX standard. The behaviour with
              the option unset is described in the documentation  for  the  cd
              builtin in zshbuiltins(1).  If the option is set, the shell does
              not test for directories beneath the local directory (`.') until
              after all directories in cdpath have been tested.

              Also, if the option is set, the conditions under which the shell
              prints the new directory after changing to it are modified.   It
              is no longer restricted to interactive shells (although printing
              of  the  directory  stack  with  pushd  is  still   limited   to
              interactive  shells);  and  any  use  of  a component of CDPATH,
              including a  `.'  but  excluding  an  empty  component  that  is
              otherwise treated as `.', causes the directory to be printed.

       PUSHD_IGNORE_DUPS
              Don't  push  multiple  copies  of  the  same  directory onto the
              directory stack.

       PUSHD_MINUS
              Exchanges the meanings of `+' and `-' when used with a number to
              specify a directory in the stack.

       PUSHD_SILENT (-E)
              Do not print the directory stack after pushd or popd.

       PUSHD_TO_HOME (-D)
              Have pushd with no arguments act like `pushd $HOME'.

   Completion
       ALWAYS_LAST_PROMPT <D>
              If  unset,  key functions that list completions try to return to
              the last prompt if  given  a  numeric  argument.  If  set  these
              functions  try  to return to the last prompt if given no numeric
              argument.

       ALWAYS_TO_END
              If a completion is performed with the cursor within a word,  and
              a full completion is inserted, the cursor is moved to the end of
              the word.  That is, the cursor is moved to the end of  the  word
              if  either  a  single  match  is  inserted or menu completion is
              performed.

       AUTO_LIST (-9) <D>
              Automatically list choices on an ambiguous completion.

       AUTO_MENU <D>
              Automatically use menu completion after the  second  consecutive
              request  for  completion,  for  example  by pressing the tab key
              repeatedly. This option is overridden by MENU_COMPLETE.

       AUTO_NAME_DIRS
              Any parameter that is set to the absolute name  of  a  directory
              immediately becomes a name for that directory, that will be used
              by the `%~' and related prompt sequences, and will be  available
              when  completion  is  performed  on  a  word  starting with `~'.
              (Otherwise, the parameter must be  used  in  the  form  `~param'
              first.)

       AUTO_PARAM_KEYS <D>
              If  a  parameter  name  was  completed and a following character
              (normally  a  space)  automatically  inserted,  and   the   next
              character typed is one of those that have to come directly after
              the  name  (like  `}',  `:',  etc.),  the  automatically   added
              character   is  deleted,  so  that  the  character  typed  comes
              immediately after the parameter name.   Completion  in  a  brace
              expansion  is  affected similarly: the added character is a `,',
              which will be removed if `}' is typed next.

       AUTO_PARAM_SLASH <D>
              If a parameter is completed whose  content  is  the  name  of  a
              directory, then add a trailing slash instead of a space.

       AUTO_REMOVE_SLASH <D>
              When  the  last character resulting from a completion is a slash
              and the next character typed is a word delimiter, a slash, or  a
              character  that  ends  a  command  (such  as  a  semicolon or an
              ampersand), remove the slash.

       BASH_AUTO_LIST
              On an ambiguous completion, automatically list choices when  the
              completion  function  is called twice in succession.  This takes
              precedence over AUTO_LIST.  The  setting  of  LIST_AMBIGUOUS  is
              respected.   If  AUTO_MENU  is set, the menu behaviour will then
              start with the third press.  Note that this will not  work  with
              MENU_COMPLETE, since repeated completion calls immediately cycle
              through the list in that case.

       COMPLETE_ALIASES
              Prevents aliases on  the  command  line  from  being  internally
              substituted  before  completion  is attempted.  The effect is to
              make the alias a distinct command for completion purposes.

       COMPLETE_IN_WORD
              If unset, the cursor is set to the end of the word if completion
              is started. Otherwise it stays there and completion is done from
              both ends.

       GLOB_COMPLETE
              When the current word has a glob pattern, do not insert all  the
              words  resulting  from the expansion but generate matches as for
              completion  and  cycle  through  them  like  MENU_COMPLETE.  The
              matches  are  generated  as if a `*' was added to the end of the
              word, or inserted at the cursor when  COMPLETE_IN_WORD  is  set.
              This  actually  uses pattern matching, not globbing, so it works
              not only for files but for any completion, such as options, user
              names, etc.

              Note  that  when  the  pattern matcher is used, matching control
              (for example, case-insensitive or anchored matching)  cannot  be
              used.   This  limitation  only  applies  when  the  current word
              contains a pattern; simply turning on the  GLOB_COMPLETE  option
              does not have this effect.

       HASH_LIST_ALL <D>
              Whenever a command completion is attempted, make sure the entire
              command path is hashed first.  This makes the  first  completion
              slower.

       LIST_AMBIGUOUS <D>
              This  option works when AUTO_LIST or BASH_AUTO_LIST is also set.
              If there is an unambiguous prefix to insert on the command line,
              that is done without a completion list being displayed; in other
              words, auto-listing behaviour  only  takes  place  when  nothing
              would  be  inserted.   In the case of BASH_AUTO_LIST, this means
              that the list will be delayed to the third call of the function.

       LIST_BEEP <D>
              Beep on an ambiguous completion.  More accurately,  this  forces
              the  completion  widgets  to  return  status  1  on an ambiguous
              completion, which causes the shell to beep if the option BEEP is
              also  set;  this  may be modified if completion is called from a
              user-defined widget.

       LIST_PACKED
              Try to make the completion list smaller (occupying  less  lines)
              by printing the matches in columns with different widths.

       LIST_ROWS_FIRST
              Lay  out  the  matches  in completion lists sorted horizontally,
              that is, the second match is to the right of the first one,  not
              under it as usual.

       LIST_TYPES (-X) <D>
              When  listing files that are possible completions, show the type
              of each file with a trailing identifying mark.

       MENU_COMPLETE (-Y)
              On an ambiguous completion, instead of listing possibilities  or
              beeping,   insert   the  first  match  immediately.   Then  when
              completion is requested again, remove the first match and insert
              the  second match, etc.  When there are no more matches, go back
              to the first one again.  reverse-menu-complete may  be  used  to
              loop  through  the  list  in  the  other  direction. This option
              overrides AUTO_MENU.

       REC_EXACT (-S)
              In  completion,  recognize  exact  matches  even  if  they   are
              ambiguous.

   Expansion and Globbing
       BAD_PATTERN (+2) <C> <Z>
              If  a  pattern for filename generation is badly formed, print an
              error message.  (If this option is unset, the  pattern  will  be
              left unchanged.)

       BARE_GLOB_QUAL <Z>
              In  a  glob  pattern,  treat  a trailing set of parentheses as a
              qualifier list, if it contains no `|', `(' or (if  special)  `~'
              characters.  See the section `Filename Generation'.

       BRACE_CCL
              Expand  expressions  in braces which would not otherwise undergo
              brace  expansion  to  a  lexically  ordered  list  of  all   the
              characters.  See the section `Brace Expansion'.

       CASE_GLOB <D>
              Make  globbing  (filename  generation)  sensitive to case.  Note
              that other uses of patterns are always sensitive  to  case.   If
              the  option  is  unset,  the  presence of any character which is
              special  to  filename  generation  will  cause  case-insensitive
              matching.  For example, cvs(/) can match the directory CVS owing
              to  the  presence  of  the  globbing  flag  (unless  the  option
              BARE_GLOB_QUAL is unset).

       CASE_MATCH <D>
              Make  regular  expressions using the zsh/regex module (including
              matches with =~) sensitive to case.

       CSH_NULL_GLOB <C>
              If a pattern for filename generation has no matches, delete  the
              pattern  from  the  argument list; do not report an error unless
              all the patterns  in  a  command  have  no  matches.   Overrides
              NOMATCH.

       EQUALS <Z>
              Perform  =  filename  expansion.   (See  the  section  `Filename
              Expansion'.)

       EXTENDED_GLOB
              Treat the `#', `~' and `^' characters as part  of  patterns  for
              filename  generation,  etc.   (An  initial  unquoted  `~' always
              produces named directory expansion.)

       GLOB (+F, ksh: +f) <D>
              Perform  filename  generation  (globbing).   (See  the   section
              `Filename Generation'.)

       GLOB_ASSIGN <C>
              If  this  option  is  set,  filename  generation  (globbing)  is
              performed on the right hand side of scalar parameter assignments
              of  the  form  `name=pattern  (e.g. `foo=*').  If the result has
              more than one word the parameter will become an array with those
              words  as  arguments.  This  option  is  provided  for backwards
              compatibility only: globbing is always performed  on  the  right
              hand  side of array assignments of the form `name=(value)' (e.g.
              `foo=(*)') and this form is recommended for clarity;  with  this
              option  set,  it  is  not possible to predict whether the result
              will be an array or a scalar.

       GLOB_DOTS (-4)
              Do not require a  leading  `.'  in  a  filename  to  be  matched
              explicitly.

       GLOB_SUBST <C> <K> <S>
              Treat any characters resulting from parameter expansion as being
              eligible for file expansion and  filename  generation,  and  any
              characters resulting from command substitution as being eligible
              for filename generation.  Braces (and commas in between) do  not
              become eligible for expansion.

       HIST_SUBST_PATTERN
              Substitutions   using  the  :s  and  :&  history  modifiers  are
              performed with pattern  matching  instead  of  string  matching.
              This occurs wherever history modifiers are valid, including glob
              qualifiers  and  parameters.   See  the  section  Modifiers   in
              zshexpn(1).

       IGNORE_BRACES (-I) <S>
              Do  not  perform  brace  expansion.  For historical reasons this
              also includes the effect of the IGNORE_CLOSE_BRACES option.

       IGNORE_CLOSE_BRACES
              When neither this option nor IGNORE_BRACES is set, a sole  close
              brace character `}' is syntactically significant at any point on
              a command line.  This  has  the  effect  that  no  semicolon  or
              newline  is necessary before the brace terminating a function or
              current shell construct.  When either option is set,  a  closing
              brace  is  syntactically  significant  only in command position.
              Unlike  IGNORE_BRACES,  this  option  does  not  disable   brace
              expansion.

              For  example,  with both options unset a function may be defined
              in the following fashion:

                     args() { echo $# }

              while if either option is set, this does not work and  something
              equivalent to the following is required:

                     args() { echo $#; }

       KSH_GLOB <K>
              In  pattern  matching,  the  interpretation  of  parentheses  is
              affected by a preceding `@', `*', `+',  `?'  or  `!'.   See  the
              section `Filename Generation'.

       MAGIC_EQUAL_SUBST
              All   unquoted   arguments  of  the  form  `anything=expression'
              appearing after the command name have filename  expansion  (that
              is,  where  expression  has  a  leading `~' or `=') performed on
              expression as if it were a parameter assignment.   The  argument
              is  not otherwise treated specially; it is passed to the command
              as a single argument,  and  not  used  as  an  actual  parameter
              assignment.    For   example,   in  echo  foo=~/bar:~/rod,  both
              occurrences of ~ would be  replaced.   Note  that  this  happens
              anyway with typeset and similar statements.

              This  option respects the setting of the KSH_TYPESET option.  In
              other words, if both options are in  effect,  arguments  looking
              like assignments will not undergo word splitting.

       MARK_DIRS (-8, ksh: -X)
              Append  a  trailing  `/'  to  all directory names resulting from
              filename generation (globbing).

       MULTIBYTE <C> <K> <Z>
              Respect multibyte characters when found in strings.   When  this
              option  is set, strings are examined using the system library to
              determine how many bytes form  a  character,  depending  on  the
              current  locale.  This affects the way characters are counted in
              pattern matching, parameter values and various delimiters.

              The option is on by default  if  the  shell  was  compiled  with
              MULTIBYTE_SUPPORT except in sh emulation; otherwise it is off by
              default and has no effect if turned on.  The mode is off  in  sh
              emulation  for compatibility but for interactive use may need to
              be turned on if the terminal interprets multibyte characters.

              If the option is off a single byte is always treated as a single
              character.   This  setting  is  designed  purely  for  examining
              strings known to contain raw bytes or other values that may  not
              be  characters  in  the  current locale.  It is not necessary to
              unset the option  merely  because  the  character  set  for  the
              current locale does not contain multibyte characters.

              The  option  does  not  affect the shell's editor,  which always
              uses the locale to  determine  multibyte  characters.   This  is
              because  the character set displayed by the terminal emulator is
              independent of shell settings.

       NOMATCH (+3) <C> <Z>
              If a pattern for filename generation has no  matches,  print  an
              error,  instead  of  leaving  it unchanged in the argument list.
              This also applies to file expansion of an initial `~' or `='.

       NULL_GLOB (-G)
              If a pattern for filename generation has no matches, delete  the
              pattern  from  the  argument list instead of reporting an error.
              Overrides NOMATCH.

       NUMERIC_GLOB_SORT
              If numeric  filenames  are  matched  by  a  filename  generation
              pattern,    sort   the   filenames   numerically   rather   than
              lexicographically.

       RC_EXPAND_PARAM (-P)
              Array expansions of the form `foo${xx}bar', where the  parameter
              xx  is  set  to  (a  b c), are substituted with `fooabar foobbar
              foocbar' instead of the default `fooa b  cbar'.   Note  that  an
              empty array will therefore cause all arguments to be removed.

       REMATCH_PCRE <Z>
              If  set,  regular  expression matching with the =~ operator will
              use Perl-Compatible Regular Expressions from the  PCRE  library,
              if  available.   If  not  set,  regular expressions will use the
              extended regexp syntax provided by the system libraries.

       SH_GLOB <K> <S>
              Disables the special meaning  of  `(',  `|',  `)'  and  '<'  for
              globbing  the result of parameter and command substitutions, and
              in some other places  where  the  shell  accepts  patterns.   If
              SH_GLOB  is  set  but  KSH_GLOB  is  not,  the  shell allows the
              interpretation of subshell expressions enclosed  in  parentheses
              in  some  cases  where  there  is  no  space  before the opening
              parenthesis, e.g. !(true) is interpreted  as  if  there  were  a
              space  after  the  !.   This  option is set by default if zsh is
              invoked as sh or ksh.

       UNSET (+u, ksh: +u) <K> <S> <Z>
              Treat unset parameters as if they were empty when  substituting.
              Otherwise they are treated as an error.

       WARN_CREATE_GLOBAL
              Print  a warning message when a global parameter is created in a
              function  by  an  assignment.   This  often  indicates  that   a
              parameter  has not been declared local when it should have been.
              Parameters explicitly declared global  from  within  a  function
              using  typeset -g do not cause a warning.  Note that there is no
              warning when a local  parameter  is  assigned  to  in  a  nested
              function, which may also indicate an error.

   History
       APPEND_HISTORY <D>
              If  this  is set, zsh sessions will append their history list to
              the  history  file,  rather  than  replace  it.  Thus,  multiple
              parallel  zsh  sessions will all have the new entries from their
              history lists added to the history file, in the order that  they
              exit.  The file will still be periodically re-written to trim it
              when the number of lines grows 20% beyond the value specified by
              $SAVEHIST (see also the HIST_SAVE_BY_COPY option).

       BANG_HIST (+K) <C> <Z>
              Perform  textual  history  expansion,  csh-style,  treating  the
              character `!' specially.

       EXTENDED_HISTORY <C>
              Save each command's beginning timestamp (in  seconds  since  the
              epoch)  and  the duration (in seconds) to the history file.  The
              format of this prefixed data is:

              `: <beginning time>:<elapsed seconds>;<command>'.

       HIST_ALLOW_CLOBBER
              Add `|' to output redirections  in  the  history.   This  allows
              history references to clobber files even when CLOBBER is unset.

       HIST_BEEP <D>
              Beep  when  an  attempt  is made to access a history entry which
              isn't there.

       HIST_EXPIRE_DUPS_FIRST
              If the internal history needs to be trimmed to add  the  current
              command  line, setting this option will cause the oldest history
              event that has a duplicate to be lost  before  losing  a  unique
              event  from  the  list.   You should be sure to set the value of
              HISTSIZE to a larger number than SAVEHIST in order to  give  you
              some  room for the duplicated events, otherwise this option will
              behave just like HIST_IGNORE_ALL_DUPS once the history fills  up
              with unique events.

       HIST_FCNTL_LOCK
              When  writing  out  the history file, by default zsh uses ad-hoc
              file locking to  avoid  known  problems  with  locking  on  some
              operating systems.  With this option locking is done by means of
              the system's fcntl call, where this  method  is  available.   On
              recent operating systems this may provide better performance, in
              particular avoiding history corruption when files are stored  on
              NFS.

       HIST_FIND_NO_DUPS
              When  searching  for  history entries in the line editor, do not
              display duplicates of a  line  previously  found,  even  if  the
              duplicates are not contiguous.

       HIST_IGNORE_ALL_DUPS
              If a new command line being added to the history list duplicates
              an older one, the older command is removed from the  list  (even
              if it is not the previous event).

       HIST_IGNORE_DUPS (-h)
              Do  not  enter  command  lines into the history list if they are
              duplicates of the previous event.

       HIST_IGNORE_SPACE (-g)
              Remove command lines  from  the  history  list  when  the  first
              character  on  the  line is a space, or when one of the expanded
              aliases contains a leading  space.   Only  normal  aliases  (not
              global  or  suffix  aliases) have this behaviour.  Note that the
              command lingers in the internal history until the  next  command
              is  entered before it vanishes, allowing you to briefly reuse or
              edit the line.  If you want to make it vanish right away without
              entering another command, type a space and press return.

       HIST_LEX_WORDS
              By  default,  shell  history that is read in from files is split
              into words on all white space.  This means that  arguments  with
              quoted   whitespace   are   not   correctly  handled,  with  the
              consequence that references to words in history lines that  have
              been  read  from  a file may be inaccurate.  When this option is
              set, words read in from a history  file  are  divided  up  in  a
              similar fashion to normal shell command line handling.  Although
              this produces more accurately delimited words, if  the  size  of
              the  history file is large this can be slow.  Trial and error is
              necessary to decide.

       HIST_NO_FUNCTIONS
              Remove function definitions from the history  list.   Note  that
              the  function  lingers  in  the  internal history until the next
              command is entered before it vanishes, allowing you  to  briefly
              reuse or edit the definition.

       HIST_NO_STORE
              Remove  the  history  (fc -l) command from the history list when
              invoked.  Note that the command lingers in the internal  history
              until  the  next command is entered before it vanishes, allowing
              you to briefly reuse or edit the line.

       HIST_REDUCE_BLANKS
              Remove superfluous blanks from each command line being added  to
              the history list.

       HIST_SAVE_BY_COPY <D>
              When  the  history  file  is re-written, we normally write out a
              copy of the file named $HISTFILE.new and then rename it over the
              old  one.  However, if this option is unset, we instead truncate
              the old history file and write out the new version in-place.  If
              one  of  the  history-appending  options is enabled, this option
              only has an effect when the enlarged history file  needs  to  be
              re-written  to  trim  it down to size.  Disable this only if you
              have special needs, as  doing  so  makes  it  possible  to  lose
              history entries if zsh gets interrupted during the save.

              When  writing  out a copy of the history file, zsh preserves the
              old file's permissions and group information, but will refuse to
              write  out  a  new  file  if  it would change the history file's
              owner.

       HIST_SAVE_NO_DUPS
              When writing out the history file, older commands that duplicate
              newer ones are omitted.

       HIST_VERIFY
              Whenever  the  user  enters a line with history expansion, don't
              execute the line directly; instead,  perform  history  expansion
              and reload the line into the editing buffer.

       INC_APPEND_HISTORY
              This  options  works like APPEND_HISTORY except that new history
              lines are added to the $HISTFILE incrementally (as soon as  they
              are  entered),  rather  than waiting until the shell exits.  The
              file will still be periodically re-written to trim it  when  the
              number  of  lines  grows  20%  beyond  the  value  specified  by
              $SAVEHIST (see also the HIST_SAVE_BY_COPY option).

       SHARE_HISTORY <K>

              This option both imports new commands from the history file, and
              also  causes  your  typed commands to be appended to the history
              file (the latter is like  specifying  INC_APPEND_HISTORY).   The
              history    lines   are   also   output   with   timestamps   ala
              EXTENDED_HISTORY (which makes it easier to find the  spot  where
              we left off reading the file after it gets re-written).

              By  default,  history movement commands visit the imported lines
              as well as the local lines, but you can toggle this on  and  off
              with  the set-local-history zle binding.  It is also possible to
              create a zle widget that will make some commands ignore imported
              commands, and some include them.

              If  you  find  that you want more control over when commands get
              imported,   you   may   wish   to   turn   SHARE_HISTORY    off,
              INC_APPEND_HISTORY   on,   and  then  manually  import  commands
              whenever you need them using `fc -RI'.

   Initialisation
       ALL_EXPORT (-a, ksh: -a)
              All parameters subsequently defined are automatically exported.

       GLOBAL_EXPORT (<Z>)
              If this option is set, passing  the  -x  flag  to  the  builtins
              declare,  float,  integer,  readonly and typeset (but not local)
              will also set the -g flag;  hence  parameters  exported  to  the
              environment  will  not  be made local to the enclosing function,
              unless they were already or the flag +g is given explicitly.  If
              the  option  is unset, exported parameters will be made local in
              just the same way as any other parameter.

              This option is set by default for backward compatibility; it  is
              not  recommended  that  its behaviour be relied upon.  Note that
              the builtin export always sets both the -x  and  -g  flags,  and
              hence  its  effect  extends  beyond  the  scope of the enclosing
              function;  this  is  the  most  portable  way  to  achieve  this
              behaviour.

       GLOBAL_RCS (-d) <D>
              If  this  option  is  unset,  the  startup  files /etc/zprofile,
              /etc/zshrc, /etc/zlogin and /etc/zlogout will not  be  run.   It
              can  be  disabled  and  re-enabled at any time, including inside
              local startup files (.zshrc, etc.).

       RCS (+f) <D>
              After /etc/zshenv is sourced on  startup,  source  the  .zshenv,
              /etc/zprofile,   .zprofile,   /etc/zshrc,  .zshrc,  /etc/zlogin,
              .zlogin,  and  .zlogout  files,  as  described  in  the  section
              `Files'.  If this option is unset, the /etc/zshenv file is still
              sourced, but any of the others will not be; it can be set at any
              time  to prevent the remaining startup files after the currently
              executing one from being sourced.

   Input/Output
       ALIASES <D>
              Expand aliases.

       CLOBBER (+C, ksh: +C) <D>
              Allows `>' redirection to truncate existing files, and  `>>'  to
              create files.  Otherwise `>!' or `>|' must be used to truncate a
              file, and `>>!' or `>>|' to create a file.

       CORRECT (-0)
              Try to correct the spelling of commands.  Note  that,  when  the
              HASH_LIST_ALL  option is not set or when some directories in the
              path are not readable, this may falsely report  spelling  errors
              the first time some commands are used.

              The  shell  variable  CORRECT_IGNORE  may be set to a pattern to
              match words that will never be offered as corrections.

       CORRECT_ALL (-O)
              Try to correct the spelling of all arguments in a line.

       DVORAK Use the Dvorak keyboard instead of the standard qwerty  keyboard
              as  a  basis for examining spelling mistakes for the CORRECT and
              CORRECT_ALL options and the spell-word editor command.

       FLOW_CONTROL <D>
              If this option is unset,  output  flow  control  via  start/stop
              characters  (usually  assigned  to  ^S/^Q)  is  disabled  in the
              shell's editor.

       IGNORE_EOF (-7)
              Do not exit on end-of-file.  Require the use of exit  or  logout
              instead.   However, ten consecutive EOFs will cause the shell to
              exit anyway, to avoid the shell hanging if its tty goes away.

              Also, if this option is set and the Zsh  Line  Editor  is  used,
              widgets  implemented  by  shell  functions  can  be bound to EOF
              (normally  Control-D)  without  printing  the   normal   warning
              message.  This works only for normal widgets, not for completion
              widgets.

       INTERACTIVE_COMMENTS (-k) <K> <S>
              Allow comments even in interactive shells.

       HASH_CMDS <D>
              Note the location of each command the first time it is executed.
              Subsequent  invocations  of  the same command will use the saved
              location, avoiding a path search.  If this option is  unset,  no
              path  hashing  is  done  at  all.  However, when CORRECT is set,
              commands whose names do not appear in the functions  or  aliases
              hash  tables  are  hashed  in  order  to avoid reporting them as
              spelling errors.

       HASH_DIRS <D>
              Whenever a command name is hashed, hash the directory containing
              it,  as  well as all directories that occur earlier in the path.
              Has no effect if neither HASH_CMDS nor CORRECT is set.

       HASH_EXECUTABLES_ONLY
              When hashing commands because of HASH_COMMANDS, check  that  the
              file  to  be  hashed  is actually an executable.  This option is
              unset by default as if the  path  contains  a  large  number  of
              commands, or consists of many remote files, the additional tests
              can take a long time.  Trial and error is needed to show if this
              option is beneficial.

       MAIL_WARNING (-U)
              Print  a  warning message if a mail file has been accessed since
              the shell last checked.

       PATH_DIRS (-Q)
              Perform a path search even on  command  names  with  slashes  in
              them.  Thus if `/usr/local/bin' is in the user's path, and he or
              she types `X11/xinit',  the  command  `/usr/local/bin/X11/xinit'
              will  be  executed  (assuming  it  exists).  Commands explicitly
              beginning with `/', `./' or `../' are not subject  to  the  path
              search.  This also applies to the `.' builtin.

              Note  that  subdirectories  of  the current directory are always
              searched for executables specified in  this  form.   This  takes
              place before any search indicated by this option, and regardless
              of whether `.' or the current directory appear  in  the  command
              search path.

       PATH_SCRIPT <K> <S>
              If  this  option  is  not  set,  a  script  passed  as the first
              non-option argument to the shell must contain the  name  of  the
              file  to  open.   If this option is set, and the script does not
              specify a directory path, the script is looked for first in  the
              current  directory,  then  in the command path.  See the section
              INVOCATION in zsh(1).

       PRINT_EIGHT_BIT
              Print eight bit characters literally in completion  lists,  etc.
              This  option  is  not necessary if your system correctly returns
              the printability of eight bit characters (see ctype(3)).

       PRINT_EXIT_VALUE (-1)
              Print the exit value of programs with non-zero exit status.

       RC_QUOTES
              Allow the character sequence `'''  to  signify  a  single  quote
              within  singly  quoted  strings.   Note  this  does not apply in
              quoted strings using the  format  $'...',  where  a  backslashed
              single quote can be used.

       RM_STAR_SILENT (-H) <K> <S>
              Do not query the user before executing `rm *' or `rm path/*'.

       RM_STAR_WAIT
              If  querying  the  user  before executing `rm *' or `rm path/*',
              first wait ten seconds and ignore anything typed in  that  time.
              This  avoids  the  problem of reflexively answering `yes' to the
              query when one didn't really mean it.  The wait  and  query  can
              always be avoided by expanding the `*' in ZLE (with tab).

       SHORT_LOOPS <C> <Z>
              Allow  the  short forms of for, repeat, select, if, and function
              constructs.

       SUN_KEYBOARD_HACK (-L)
              If a line ends with a backquote, and there are an odd number  of
              backquotes  on the line, ignore the trailing backquote.  This is
              useful on some keyboards where the return key is too small,  and
              the   backquote   key  lies  annoyingly  close  to  it.   As  an
              alternative the  variable  KEYBOARD_HACK  lets  you  choose  the
              character to be removed.

   Job Control
       AUTO_CONTINUE
              With this option set, stopped jobs that are removed from the job
              table with the disown builtin command are automatically  sent  a
              CONT signal to make them running.

       AUTO_RESUME (-W)
              Treat   single  word  simple  commands  without  redirection  as
              candidates for resumption of an existing job.

       BG_NICE (-6) <C> <Z>
              Run all background jobs at a lower priority.  This option is set
              by default.

       CHECK_JOBS <Z>
              Report  the  status  of  background  and  suspended  jobs before
              exiting a shell with job control; a second attempt to  exit  the
              shell   will  succeed.   NO_CHECK_JOBS  is  best  used  only  in
              combination  with  NO_HUP,  else  such  jobs  will   be   killed
              automatically.

              The  check  is  omitted  if  the  commands run from the previous
              command line included a `jobs' command, since it is assumed  the
              user  is  aware  that there are background or suspended jobs.  A
              `jobs' command run from one of the hook functions defined in the
              section  SPECIAL FUNCTIONS in zshmisc(1) is not counted for this
              purpose.

       HUP <Z>
              Send the HUP signal to running jobs when the shell exits.

       LONG_LIST_JOBS (-R)
              List jobs in the long format by default.

       MONITOR (-m, ksh: -m)
              Allow job control.  Set by default in interactive shells.

       NOTIFY (-5, ksh: -b) <Z>
              Report the status of background jobs  immediately,  rather  than
              waiting until just before printing a prompt.

       POSIX_JOBS <K> <S>
              This  option  makes  job  control  more compliant with the POSIX
              standard.

              When the option is not set, the MONITOR option is unset on entry
              to subshells, so that job control is no longer active.  When the
              option is set, the MONITOR option and job control remain  active
              in  the  subshell,  but  note that the subshell has no access to
              jobs in the parent shell.

              When the option is not  set,  jobs  put  in  the  background  or
              foreground with bg or fg are displayed with the same information
              that would be reported by jobs.  When the option  is  set,  only
              the  text  is  printed.   The  output  from  jobs  itself is not
              affected by the option.

              When the option is not set,  job  information  from  the  parent
              shell is saved for output within a subshell (for example, within
              a pipeline).  When the option is set,  the  output  of  jobs  is
              empty until a job is started within the subshell.

              When  the  option  is  set,  it becomes possible to use the wait
              builtin to wait for the last job started in the  background  (as
              given  by  $!)  even if that job has already exited.  This works
              even if the option is turned on temporarily around  the  use  of
              the wait builtin.

   Prompting
       PROMPT_BANG <K>
              If  set,  `!'  is  treated  specially  in prompt expansion.  See
              EXPANSION OF PROMPT SEQUENCES in zshmisc(1).

       PROMPT_CR (+V) <D>
              Print a carriage return just before printing  a  prompt  in  the
              line  editor.   This  is  on by default as multi-line editing is
              only possible if the editor knows where the start  of  the  line
              appears.

       PROMPT_SP <D>
              Attempt to preserve a partial line (i.e. a line that did not end
              with a newline) that  would  otherwise  be  covered  up  by  the
              command  prompt  due  to  the  PROMPT_CR  option.  This works by
              outputting some cursor-control characters, including a series of
              spaces, that should make the terminal wrap to the next line when
              a partial line is present (note that this is only successful  if
              your terminal has automatic margins, which is typical).

              When  a  partial  line  is preserved, by default you will see an
              inverse+bold character at the end of the partial  line:   a  "%"
              for  a  normal  user  or  a  "#"  for  root.   If set, the shell
              parameter PROMPT_EOL_MARK can be used to customize how  the  end
              of partial lines are shown.

              NOTE:  if  the PROMPT_CR option is not set, enabling this option
              will have no effect.  This option is on by default.

       PROMPT_PERCENT <C> <Z>
              If set, `%' is  treated  specially  in  prompt  expansion.   See
              EXPANSION OF PROMPT SEQUENCES in zshmisc(1).

       PROMPT_SUBST <K> <S>
              If set, parameter expansion, command substitution and arithmetic
              expansion  are  performed  in  prompts.   Substitutions   within
              prompts do not affect the command status.

       TRANSIENT_RPROMPT
              Remove  any  right  prompt from display when accepting a command
              line.  This may be useful with terminals  with  other  cut/paste
              methods.

   Scripts and Functions
       C_BASES
              Output hexadecimal numbers in the standard C format, for example
              `0xFF' instead of the usual `16#FF'.  If the option OCTAL_ZEROES
              is  also  set  (it  is  not  by  default), octal numbers will be
              treated similarly and hence appear as `077' instead  of  `8#77'.
              This  option has no effect on the choice of the output base, nor
              on the output of bases other than hexadecimal and  octal.   Note
              that  these  formats will be understood on input irrespective of
              the setting of C_BASES.

       C_PRECEDENCES
              This alters the precedence of arithmetic operators  to  be  more
              like  C  and other programming languages; the section ARITHMETIC
              EVALUATION in zshmisc(1) has an explicit list.

       DEBUG_BEFORE_CMD
              Run the DEBUG trap before each  command;  otherwise  it  is  run
              after each command.  Setting this option mimics the behaviour of
              ksh 93; with the option unset the behaviour is that of ksh 88.

       ERR_EXIT (-e, ksh: -e)
              If a command has a non-zero exit status, execute the ZERR  trap,
              if set, and exit.  This is disabled while running initialization
              scripts.

              The behaviour is also disabled inside DEBUG traps.  In this case
              the  option  is  handled  specially: it is unset on entry to the
              trap.  If the option  DEBUG_BEFORE_CMD  is  set,  as  it  is  by
              default,  and  the  option ERR_EXIT is found to have been set on
              exit, then the  command  for  which  the  DEBUG  trap  is  being
              executed  is  skipped.   The  option  is restored after the trap
              exits.

       ERR_RETURN
              If a command has a non-zero exit status, return immediately from
              the  enclosing  function.   The  logic  is identical to that for
              ERR_EXIT, except that an implicit return statement  is  executed
              instead  of an exit.  This will trigger an exit at the outermost
              level of a non-interactive script.

       EVAL_LINENO <Z>
              If set, line numbers of expressions evaluated using the  builtin
              eval  are tracked separately of the enclosing environment.  This
              applies both to the parameter LINENO and the line number  output
              by  the  prompt  escape  %i.   If  the option is set, the prompt
              escape %N will output the string `(eval)' instead of the  script
              or function name as an indication.   (The two prompt escapes are
              typically used in the parameter PS4 to be output when the option
              XTRACE is set.)  If EVAL_LINENO is unset, the line number of the
              surrounding  script  or  function   is   retained   during   the
              evaluation.

       EXEC (+n, ksh: +n) <D>
              Do execute commands.  Without this option, commands are read and
              checked for syntax errors, but not executed.  This option cannot
              be  turned  off  in  an  interactive  shell, except when `-n' is
              supplied to the shell at startup.

       FUNCTION_ARGZERO <C> <Z>
              When executing a shell function or sourcing  a  script,  set  $0
              temporarily to the name of the function/script.

       LOCAL_OPTIONS <K>
              If  this  option  is  set  at  the  point of return from a shell
              function, most options (including this one) which were in  force
              upon  entry  to  the function are restored; options that are not
              restored are PRIVILEGED and RESTRICTED.   Otherwise,  only  this
              option and the XTRACE and PRINT_EXIT_VALUE options are restored.
              Hence if this is explicitly unset by a shell function the  other
              options in force at the point of return will remain so.  A shell
              function can also guarantee itself a known  shell  configuration
              with  a  formulation  like  `emulate  -L  zsh'; the -L activates
              LOCAL_OPTIONS.

       LOCAL_TRAPS <K>
              If this option is set  when  a  signal  trap  is  set  inside  a
              function,  then  the previous status of the trap for that signal
              will be restored when the function exits.  Note that this option
              must  be set prior to altering the trap behaviour in a function;
              unlike LOCAL_OPTIONS, the value on exit  from  the  function  is
              irrelevant.   However,  it  does  not  need to be set before any
              global trap for that to be correctly  restored  by  a  function.
              For example,

                     unsetopt localtraps
                     trap - INT
                     fn() { setopt localtraps; trap '' INT; sleep 3; }

              will restore normal handling of SIGINT after the function exits.

       MULTI_FUNC_DEF <Z>
              Allow definitions of multiple functions at once in the form `fn1
              fn2...()'; if the option is not set, this causes a parse  error.
              Definition  of  multiple  functions with the function keyword is
              always allowed.  Multiple function  definitions  are  not  often
              used and can cause obscure errors.

       MULTIOS <Z>
              Perform  implicit  tees  or  cats when multiple redirections are
              attempted (see the section `Redirection').

       OCTAL_ZEROES <S>
              Interpret any integer constant beginning with a 0 as octal,  per
              IEEE  Std 1003.2-1992 (ISO 9945-2:1993).  This is not enabled by
              default as it causes problems with parsing of, for example, date
              and time strings with leading zeroes.

              Sequences  of  digits indicating a numeric base such as the `08'
              component  in  `08#77'  are  always  interpreted   as   decimal,
              regardless of leading zeroes.

       SOURCE_TRACE
              If  set,  zsh will print an informational message announcing the
              name of each file it loads.  The format of the output is similar
              to  that  for the XTRACE option, with the message <sourcetrace>.
              A file may be loaded by the shell itself when it starts  up  and
              shuts  down  (Startup/Shutdown  Files)  or  by  the  use  of the
              `source' and `dot' builtin commands.

       TYPESET_SILENT
              If this is unset, executing  any  of  the  `typeset'  family  of
              commands  with  no options and a list of parameters that have no
              values to be assigned but already exist will display  the  value
              of the parameter.  If the option is set, they will only be shown
              when parameters are selected with the `-m' option.   The  option
              `-p' is available whether or not the option is set.

       VERBOSE (-v, ksh: -v)
              Print shell input lines as they are read.

       XTRACE (-x, ksh: -x)
              Print  commands  and  their arguments as they are executed.  The
              output is proceded by the value of $PS4, formatted as  described
              in the section EXPANSION OF PROMPT SEQUENCES in zshmisc(1).

   Shell Emulation
       BASH_REMATCH
              When  set,  matches  performed with the =~ operator will set the
              BASH_REMATCH array variable, instead of the  default  MATCH  and
              match  variables.   The  first element of the BASH_REMATCH array
              will contain the entire matched  text  and  subsequent  elements
              will contain extracted substrings.  This option makes more sense
              when KSH_ARRAYS is also set, so that the entire matched  portion
              is  stored  at  index  0  and the first substring is at index 1.
              Without this option, the  MATCH  variable  contains  the  entire
              matched text and the match array variable contains substrings.

       BSD_ECHO <S>
              Make  the  echo builtin compatible with the BSD echo(1) command.
              This disables  backslashed  escape  sequences  in  echo  strings
              unless the -e option is specified.

       CSH_JUNKIE_HISTORY <C>
              A history reference without an event specifier will always refer
              to the previous command.  Without this option,  such  a  history
              reference  refers  to  the  same  event  as the previous history
              reference, defaulting to the previous command.

       CSH_JUNKIE_LOOPS <C>
              Allow loop bodies to take the form `list; end'  instead  of  `do
              list; done'.

       CSH_JUNKIE_QUOTES <C>
              Changes  the  rules  for single- and double-quoted text to match
              that of csh.  These require that embedded newlines  be  preceded
              by  a backslash; unescaped newlines will cause an error message.
              In double-quoted strings, it is made impossible to  escape  `$',
              ``'  or  `"' (and `\' itself no longer needs escaping).  Command
              substitutions are only expanded once, and cannot be nested.

       CSH_NULLCMD <C>
              Do not use the values of NULLCMD and  READNULLCMD  when  running
              redirections  with no command.  This make such redirections fail
              (see the section `Redirection').

       KSH_ARRAYS <K> <S>
              Emulate ksh array handling as  closely  as  possible.   If  this
              option  is  set, array elements are numbered from zero, an array
              parameter without subscript refers to the first element  instead
              of  the  whole  array,  and  braces  are  required  to delimit a
              subscript (`${path[2]}' rather than just `$path[2]').

       KSH_AUTOLOAD <K> <S>
              Emulate ksh  function  autoloading.   This  means  that  when  a
              function   is  autoloaded,  the  corresponding  file  is  merely
              executed, and must define the function itself.  (By default, the
              function  is  defined to the contents of the file.  However, the
              most common ksh-style case -  of  the  file  containing  only  a
              simple  definition  of  the  function - is always handled in the
              ksh-compatible manner.)

       KSH_OPTION_PRINT <K>
              Alters the way options settings are printed: instead of separate
              lists  of  set  and unset options, all options are shown, marked
              `on' if they are in the non-default state, `off' otherwise.

       KSH_TYPESET <K>
              Alters the way arguments to  the  typeset  family  of  commands,
              including  declare,  export, float, integer, local and readonly,
              are processed.  Without this option,  zsh  will  perform  normal
              word   splitting   after  command  and  parameter  expansion  in
              arguments of an assignment; with it,  word  splitting  does  not
              take place in those cases.

       KSH_ZERO_SUBSCRIPT
              Treat  use  of  a  subscript  of  value  zero in array or string
              expressions as a  reference  to  the  first  element,  i.e.  the
              element that usually has the subscript 1.  Ignored if KSH_ARRAYS
              is also set.

              If neither this option nor KSH_ARRAYS is  set,  accesses  to  an
              element  of  an  array  or  string with subscript zero return an
              empty element or string, while attempts to set element  zero  of
              an  array  or string are treated as an error.  However, attempts
              to set an otherwise valid subscript  range  that  includes  zero
              will succeed.  For example, if KSH_ZERO_SUBSCRIPT is not set,

                     array[0]=(element)

              is an error, while

                     array[0,1]=(element)

              is not and will replace the first element of the array.

              This  option  is  for  compatibility  with older versions of the
              shell and is not recommended in new code.

       POSIX_ALIASES <K> <S>
              When this option is set, reserved words are not  candidates  for
              alias expansion:  it is still possible to declare any of them as
              an alias, but the alias will never be expanded.  Reserved  words
              are described in the section RESERVED WORDS in zshmisc(1).

              Alias expansion takes place while text is being read; hence when
              this option is set it does not take effect until the end of  any
              function  or other piece of shell code parsed as one unit.  Note
              this may cause differences  from  other  shells  even  when  the
              option  is  in effect.  For example, when running a command with
              `zsh -c', or even `zsh -o posixaliases -c', the  entire  command
              argument  is  parsed  as one unit, so aliases defined within the
              argument are not available even in later lines.   If  in  doubt,
              avoid use of aliases in non-interactive code.

       POSIX_BUILTINS <K> <S>
              When  this  option  is  set  the  command builtin can be used to
              execute shell builtin commands.  Parameter assignments specified
              before  shell  functions and special builtins are kept after the
              command completes unless the special builtin  is  prefixed  with
              the   command  builtin.   Special  builtins  are  .,  :,  break,
              continue, declare, eval, exit, export, integer, local, readonly,
              return, set, shift, source, times, trap and unset.

              In  addition, various error conditions associated with the above
              builtins or exec cause a non-interactive shell to  exit  and  an
              interactive shell to return to its top-level processing.

       POSIX_IDENTIFIERS <K> <S>
              When  this option is set, only the ASCII characters a to z, A to
              Z, 0 to 9 and _ may be  used  in  identifiers  (names  of  shell
              parameters and modules).

              When  the  option  is  unset  and multibyte character support is
              enabled (i.e. it is compiled in  and  the  option  MULTIBYTE  is
              set), then additionally any alphanumeric characters in the local
              character set may be used in identifiers.  Note that scripts and
              functions  written  with this feature are not portable, and also
              that both options must be set before the script or  function  is
              parsed;  setting  them during execution is not sufficient as the
              syntax variable=value has  already  been  parsed  as  a  command
              rather than an assignment.

              If  multibyte  character  support is not compiled into the shell
              this option is ignored; all octets with the top bit set  may  be
              used   in   identifiers.    This  is  non-standard  but  is  the
              traditional zsh behaviour.

       POSIX_STRINGS <K> <S>
              This option affects processing of quoted strings.  Currently  it
              only  affects the behaviour of null characters, i.e. character 0
              in the portable character set corresponding to US ASCII.

              When this option is not set,  null  characters  embedded  within
              strings  of  the form $'...' are treated as ordinary characters.
              The entire string is maintained within the shell and  output  to
              files  where  necessary,  although  owing to restrictions of the
              library interface the string is truncated at the null  character
              in  file  names,  environment  variables,  or  in  arguments  to
              external programs.

              When this option is set, the $'...' expression is  truncated  at
              the  null  character.   Note  that  remaining  parts of the same
              string beyond the termination of the quotes are not trunctated.

              For example, the command line argument a$'b\0c'd is treated with
              the  option off as the characters a, b, null, c, d, and with the
              option on as the characters a, b, d.

       POSIX_TRAPS <K> <S>
              When the is option is set, the usual zsh behaviour of  executing
              traps  for  EXIT on exit from shell functions is suppressed.  In
              that case, manipulating EXIT traps always alters the global trap
              for exiting the shell; the LOCAL_TRAPS option is ignored for the
              EXIT trap.

       SH_FILE_EXPANSION <K> <S>
              Perform filename expansion (e.g., ~ expansion) before  parameter
              expansion,  command substitution, arithmetic expansion and brace
              expansion.  If this option is unset, it is performed after brace
              expansion, so things like `~$USERNAME' and `~{pfalstad,rc}' will
              work.

       SH_NULLCMD <K> <S>
              Do not use the values of  NULLCMD  and  READNULLCMD  when  doing
              redirections, use `:' instead (see the section `Redirection').

       SH_OPTION_LETTERS <K> <S>
              If this option is set the shell tries to interpret single letter
              options (which are used with set  and  setopt)  like  ksh  does.
              This also affects the value of the - special parameter.

       SH_WORD_SPLIT (-y) <K> <S>
              Causes  field  splitting  to  be performed on unquoted parameter
              expansions.  Note that this option has nothing to do  with  word
              splitting.  (See the section `Parameter Expansion'.)

       TRAPS_ASYNC
              While  waiting  for  a  program  to exit, handle signals and run
              traps immediately.  Otherwise the trap  is  run  after  a  child
              process  has  exited.   Note  this  does not affect the point at
              which traps are run for any case other than when  the  shell  is
              waiting for a child process.

   Shell State
       INTERACTIVE (-i, ksh: -i)
              This   is  an  interactive  shell.   This  option  is  set  upon
              initialisation if the standard input is a tty and  commands  are
              being   read  from  standard  input.   (See  the  discussion  of
              SHIN_STDIN.)  This heuristic may be overridden by  specifying  a
              state  for  this  option on the command line.  The value of this
              option can only be changed via flags supplied at  invocation  of
              the shell.  It cannot be changed once zsh is running.

       LOGIN (-l, ksh: -l)
              This  is  a  login shell.  If this option is not explicitly set,
              the shell becomes a login shell if the first  character  of  the
              argv[0] passed to the shell is a `-'.

       PRIVILEGED (-p, ksh: -p)
              Turn  on  privileged  mode.  This  is  enabled  automatically on
              startup if the effective user (group) ID is  not  equal  to  the
              real  user  (group)  ID.   Turning  this  option  off causes the
              effective user and group IDs to be set  to  the  real  user  and
              group IDs. This option disables sourcing user startup files.  If
              zsh  is  invoked  as  `sh'  or  `ksh'  with  this  option   set,
              /etc/suid_profile  is sourced (after /etc/profile on interactive
              shells). Sourcing ~/.profile is disabled and the contents of the
              ENV variable is ignored. This option cannot be changed using the
              -m option of setopt and  unsetopt,  and  changing  it  inside  a
              function   always   changes   it   globally  regardless  of  the
              LOCAL_OPTIONS option.

       RESTRICTED (-r)
              Enables restricted mode.  This option cannot  be  changed  using
              unsetopt,  and  setting  it  inside a function always changes it
              globally  regardless  of  the  LOCAL_OPTIONS  option.   See  the
              section `Restricted Shell'.

       SHIN_STDIN (-s, ksh: -s)
              Commands  are  being read from the standard input.  Commands are
              read from standard input if no command is specified with -c  and
              no  file  of  commands  is  specified.   If  SHIN_STDIN  is  set
              explicitly  on  the  command  line,  any  argument  that   would
              otherwise  have  been  taken  as  a  file to run will instead be
              treated as a normal positional parameter.  Note that setting  or
              unsetting  this  option on the command line does not necessarily
              affect the state the option will have while the shell is running
              -  that  is  purely  an indicator of whether on not commands are
              actually being read from standard  input.   The  value  of  this
              option  can  only be changed via flags supplied at invocation of
              the shell.  It cannot be changed once zsh is running.

       SINGLE_COMMAND (-t, ksh: -t)
              If the shell is reading from standard input, it  exits  after  a
              single  command  has  been  executed.  This also makes the shell
              non-interactive, unless the INTERACTIVE option is explicitly set
              on  the  command  line.   The  value  of this option can only be
              changed via flags supplied  at  invocation  of  the  shell.   It
              cannot be changed once zsh is running.

   Zle
       BEEP (+B) <D>
              Beep on error in ZLE.

       COMBINING_CHARS
              Assume   that   the   terminal   displays  combining  characters
              correctly.  Specifically, if a base  alphanumeric  character  is
              followed  by  one  or  more  zero-width  punctuation characters,
              assume that the  zero-width  characters  will  be  displayed  as
              modifications  to the base character within the same width.  Not
              all  terminals  handle  this.   If  this  option  is  not   set,
              zero-width  characters  are  displayed  separately  with special
              mark-up.

              If this option is set, the pattern  test  [[:WORD:]]  matches  a
              zero-width  punctuation character on the assumption that it will
              be used as part of a word in combination with a word  character.
              Otherwise  the  base  shell does not handle combining characters
              specially.

       EMACS  If ZLE is loaded, turning on  this  option  has  the  equivalent
              effect  of  `bindkey  -e'.  In addition, the VI option is unset.
              Turning it off  has  no  effect.   The  option  setting  is  not
              guaranteed  to  reflect  the  current  keymap.   This  option is
              provided  for  compatibility;   bindkey   is   the   recommended
              interface.

       OVERSTRIKE
              Start up the line editor in overstrike mode.

       SINGLE_LINE_ZLE (-M) <K>
              Use single-line command line editing instead of multi-line.

              Note  that  although  this  is on by default in ksh emulation it
              only provides superficial compatibility with the ksh line editor
              and reduces the effectiveness of the zsh line editor.  As it has
              no effect on shell syntax, many users may wish to  disable  this
              option when using ksh emulation interactively.

       VI     If  ZLE  is  loaded,  turning  on this option has the equivalent
              effect of `bindkey -v'.  In addition, the EMACS option is unset.
              Turning  it  off  has  no  effect.   The  option  setting is not
              guaranteed to  reflect  the  current  keymap.   This  option  is
              provided   for   compatibility;   bindkey   is  the  recommended
              interface.

       ZLE (-Z)
              Use the zsh line editor.  Set by default in  interactive  shells
              connected to a terminal.

OPTION ALIASES

       Some  options have alternative names.  These aliases are never used for
       output, but can be used just like normal option names  when  specifying
       options to the shell.

       BRACE_EXPAND
              NO_IGNORE_BRACES (ksh and bash compatibility)

       DOT_GLOB
              GLOB_DOTS (bash compatibility)

       HASH_ALL
              HASH_CMDS (bash compatibility)

       HIST_APPEND
              APPEND_HISTORY (bash compatibility)

       HIST_EXPAND
              BANG_HIST (bash compatibility)

       LOG    NO_HIST_NO_FUNCTIONS (ksh compatibility)

       MAIL_WARN
              MAIL_WARNING (bash compatibility)

       ONE_CMD
              SINGLE_COMMAND (bash compatibility)

       PHYSICAL
              CHASE_LINKS (ksh and bash compatibility)

       PROMPT_VARS
              PROMPT_SUBST (bash compatibility)

       STDIN  SHIN_STDIN (ksh compatibility)

       TRACK_ALL
              HASH_CMDS (ksh compatibility)

SINGLE LETTER OPTIONS

   Default set
       -0     CORRECT
       -1     PRINT_EXIT_VALUE
       -2     NO_BAD_PATTERN
       -3     NO_NOMATCH
       -4     GLOB_DOTS
       -5     NOTIFY
       -6     BG_NICE
       -7     IGNORE_EOF
       -8     MARK_DIRS
       -9     AUTO_LIST
       -B     NO_BEEP
       -C     NO_CLOBBER
       -D     PUSHD_TO_HOME
       -E     PUSHD_SILENT
       -F     NO_GLOB
       -G     NULL_GLOB
       -H     RM_STAR_SILENT
       -I     IGNORE_BRACES
       -J     AUTO_CD
       -K     NO_BANG_HIST
       -L     SUN_KEYBOARD_HACK
       -M     SINGLE_LINE_ZLE
       -N     AUTO_PUSHD
       -O     CORRECT_ALL
       -P     RC_EXPAND_PARAM
       -Q     PATH_DIRS
       -R     LONG_LIST_JOBS
       -S     REC_EXACT
       -T     CDABLE_VARS
       -U     MAIL_WARNING
       -V     NO_PROMPT_CR
       -W     AUTO_RESUME
       -X     LIST_TYPES
       -Y     MENU_COMPLETE
       -Z     ZLE
       -a     ALL_EXPORT
       -e     ERR_EXIT
       -f     NO_RCS
       -g     HIST_IGNORE_SPACE
       -h     HIST_IGNORE_DUPS
       -i     INTERACTIVE
       -k     INTERACTIVE_COMMENTS
       -l     LOGIN
       -m     MONITOR
       -n     NO_EXEC
       -p     PRIVILEGED
       -r     RESTRICTED
       -s     SHIN_STDIN
       -t     SINGLE_COMMAND
       -u     NO_UNSET
       -v     VERBOSE
       -w     CHASE_LINKS
       -x     XTRACE
       -y     SH_WORD_SPLIT

   sh/ksh emulation set
       -C     NO_CLOBBER
       -T     TRAPS_ASYNC
       -X     MARK_DIRS
       -a     ALL_EXPORT
       -b     NOTIFY
       -e     ERR_EXIT
       -f     NO_GLOB
       -i     INTERACTIVE
       -l     LOGIN
       -m     MONITOR
       -n     NO_EXEC
       -p     PRIVILEGED
       -r     RESTRICTED
       -s     SHIN_STDIN
       -t     SINGLE_COMMAND
       -u     NO_UNSET
       -v     VERBOSE
       -x     XTRACE

   Also note
       -A     Used by set for setting arrays
       -b     Used on the command line to specify end of option processing
       -c     Used on the command line to specify a single command
       -m     Used by setopt for pattern-matching option setting
       -o     Used in all places to allow use of long option names
       -s     Used by set to sort positional parameters