Provided by: zsh_4.3.11-4ubuntu2.is.3ubuntu2_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.

       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.   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/zsh/zprofile,
              /etc/zsh/zshrc, /etc/zsh/zlogin and /etc/zsh/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/zsh/zshenv is sourced on startup, source the .zshenv,
              /etc/zsh/zprofile,    .zprofile,     /etc/zsh/zshrc,     .zshrc,
              /etc/zsh/zlogin,  .zlogin,  and  .zlogout files, as described in
              the  section  `Files'.    If   this   option   is   unset,   the
              /etc/zsh/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.

       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.

       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 is 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