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ZSHOPTIONS(1)							 ZSHOPTIONS(1)

NAME
       zshoptions - zsh options

SPECIFYING OPTIONS
       Options are primarily referred to by name.  These names are case insen‐
       sitive and underscores are ignored.  For example, `allexport' is equiv‐
       alent 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'.  Sim‐
       ilarly, `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 emula‐
       tions 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.

       ALIASES <D>
	      Expand aliases.

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

       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 func‐
	      tions try to return to the last prompt if given no numeric argu‐
	      ment.

       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  per‐
	      formed.

       APPEND_HISTORY <D>
	      If  this	is set, zsh sessions will append their history list to
	      the history file, rather than overwrite it. Thus, multiple  par‐
	      allel  zsh  sessions  will all have their history lists added to
	      the history file, in the order they are killed.

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

       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 `~'.	 (Oth‐
	      erwise, 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 charac‐
	      ter 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_PUSHD (-N)
	      Make cd push the old directory onto the directory stack.

       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	amper‐
	      sand), remove the slash.

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

       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.)

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

       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'.

       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.

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

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

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

       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.

       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.

       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 seg‐
	      ment 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 $PWD would be deleted), 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 direc‐
	      tory.  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.

       CHECK_JOBS <Z>
	      Report the status of background and suspended jobs before	 exit‐
	      ing 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 com‐
	      mand 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 the precmd function is not  counted  for
	      this purpose.

       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.

       COMPLETE_ALIASES
	      Prevents	aliases on the command line from being internally sub‐
	      stituted 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.

       CORRECT (-0)
	      Try to correct the spelling of commands.

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

       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 ref‐
	      erence, 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').

       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.

       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.

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

       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.

       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  sup‐
	      plied to the shell at startup.

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

       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>'.

       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.

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

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

       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 func‐
	      tion; 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.).

       GLOB_ASSIGN <C>
	      If this option is set, filename generation  (globbing)  is  per‐
	      formed 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  com‐
	      patibility  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_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.

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

       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.

       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 will be done at all.

       HASH_DIRS <D>
	      Whenever a command is executed, hash  the	 directory  containing
	      it,  as  well as all directories that occur earlier in the path.
	      Has no effect if HASH_CMDS is unset.

       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.

       HIST_ALLOW_CLOBBER
	      Add `|' to output redirections in the history.  This allows his‐
	      tory 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_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	 char‐
	      acter  on	 the  line  is	a  space,  or when one of the expanded
	      aliases contains a leading space.	 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_NO_FUNCTIONS
	      Remove function definitions from the history  list.   Note  that
	      the function lingers in the internal history until the next com‐
	      mand is entered before it vanishes, allowing you to briefly  re‐
	      use 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_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.

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

       IGNORE_BRACES (-I) <S>
	      Do not perform brace expansion.

       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 (nor‐
	      mally Control-D) without printing the  normal  warning  message.
	      This works only for normal widgets, not for completion widgets.

       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 is killed.
	      The file is periodically trimmed to the number of	 lines	speci‐
	      fied by $SAVEHIST, but can exceed this value between trimmings.

       INTERACTIVE (-i, ksh: -i)
	      This is an interactive shell.  This option is set upon initiali‐
	      sation 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 cannot be
	      changed anywhere other than the command line.

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

       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 sub‐
	      script (`${path[2]}' rather than just `$path[2]').

       KSH_AUTOLOAD <K> <S>
	      Emulate ksh function autoloading.	 This means that when a	 func‐
	      tion  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 com‐
	      mon ksh-style case - of the file containing only a simple	 defi‐
	      nition of the function - is always handled in the ksh-compatible
	      manner.)

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

       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.

       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  com‐
	      pletion,	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.

       LOCAL_OPTIONS <K>
	      If  this option is set at the point of return from a shell func‐
	      tion, all the options (including this one) which were  in	 force
	      upon  entry  to the function are restored.  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 func‐
	      tion, 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 normally handling  of  SIGINT  after	 the  function
	      exits.

       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 `-'.

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

       MAGIC_EQUAL_SUBST
	      All unquoted arguments of the form `anything=expression' appear‐
	      ing after the command name have  filename	 expansion  (that  is,
	      where  expression has a leading `~' or `=') performed on expres‐
	      sion 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.

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

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

       MENU_COMPLETE (-Y)
	      On  an ambiguous completion, instead of listing possibilities or
	      beeping, insert the first match immediately.  Then when  comple‐
	      tion  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.

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

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

       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 `='.

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

       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 pat‐
	      tern, sort the filenames numerically rather  than	 lexicographi‐
	      cally.

       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.

       OVERSTRIKE
	      Start up the line editor in overstrike mode.

       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
	      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.

       POSIX_BUILTINS <K> <S>
	      When  this option is set the command builtin can be used to exe‐
	      cute 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, con‐
	      tinue, declare, eval, exit, export,  integer,  local,  readonly,
	      return, set, shift, source, times, trap and unset.

       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.

       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 effec‐
	      tive 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_pro‐
	      file  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.

       PROMPT_BANG <K>
	      If set, `!' is treated specially in prompt expansion.   See  the
	      section `Prompt Expansion'.

       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_PERCENT <C> <Z>
	      If set, `%' is treated specially in prompt expansion.   See  the
	      section `Prompt Expansion'.

       PROMPT_SUBST <K>
	      If set, parameter expansion, command substitution and arithmetic
	      expansion are performed in prompts.

       PUSHD_IGNORE_DUPS
	      Don't push multiple copies of the same directory onto the direc‐
	      tory 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'.

       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'.

       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 sin‐
	      gle quote can be used.

       RCS (+f) <D>
	      After  /etc/zshenv  is  sourced  on startup, source the .zshenv,
	      /etc/zprofile, .zprofile, /etc/zshrc, .zshrc, /etc/zlogin, .zlo‐
	      gin,  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  execut‐
	      ing one from being sourced.

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

       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  sec‐
	      tion `Restricted Shell'.

       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).

       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_HIS‐
	      TORY  (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	 when‐
	      ever you need them using `fc -RI'.

       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_GLOB <K> <S>
	      Disables	the special meaning of `(', `|', `)' and '<' for glob‐
	      bing 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.

       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  explic‐
	      itly 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 cannot be changed
	      anywhere other than the command line.

       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.

       SHORT_LOOPS <C> <Z>
	      Allow  the  short	 forms	of  for, select, if, and function con‐
	      structs.

       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'.)

       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 cannot be changed
	      anywhere other than the command line.

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

       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.

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

       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.

       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
       -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

zsh 4.0.1			 June 1, 2001			 ZSHOPTIONS(1)
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