path: root/Doc/Zsh/options.yo

texinode(Options)(Shell Builtin Commands)(Parameters)(Top)
chapter(Options)
cindex(options)
startmenu()
menu(Specifying Options)
menu(Description of Options)
menu(Option Aliases)
menu(Single Letter Options)
endmenu()
texinode(Specifying Options)(Description of Options)()(Options)
sect(Specifying Options)
cindex(options, specifying)
Options are primarily referred to by name.
These names are case insensitive and underscores are ignored.
For example, `tt(allexport)' is equivalent to `tt(A__lleXP_ort)'.

The sense of an option name may be inverted by preceding it with
`tt(no)', so `tt(setopt No_Beep)' is equivalent to `tt(unsetopt beep)'.
This inversion can only be done once, so `tt(nonobeep)' is em(not)
a synonym for `tt(beep)'.  Similarly, `tt(tify)' is not a synonym for
`tt(nonotify)' (the inversion of `tt(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 bf(sh)/bf(ksh) (used when the
tt(SH_OPTION_LETTERS) option is set).
The single letter options can be used on the shell command line,
or with the tt(set), tt(setopt) and tt(unsetopt)
builtins, as normal Unix options preceded by `tt(-)'.

The sense of the single letter options may be inverted by using
`tt(PLUS())' instead of `tt(-)'.
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, `tt(PLUS()n)' is the short name of `tt(exec)', and
`tt(-n)' is the short name of its inversion, `tt(noexec)'.
texinode(Description of Options)(Option Aliases)(Specifying Options)(Options)
sect(Description of Options)
cindex(options, description)
startitem()
pindex(ALL_EXPORT)
cindex(export, automatic)
item(tt(ALL_EXPORT) (tt(-a), ksh: tt(-a)))(
All parameters subsequently defined are automatically exported.
)
pindex(ALWAYS_LAST_PROMPT)
item(tt(ALWAYS_LAST_PROMPT))(
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 em(no) numeric argument.
)
pindex(ALWAYS_TO_END)
item(tt(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.
)
pindex(APPEND_HISTORY)
cindex(history, appending to a file)
item(tt(APPEND_HISTORY))(
If this is set, zsh sessions will append their history list to
the history file, rather than overwrite it. Thus, multiple parallel
zsh sessions will all have their history lists added to the
history file, in the order they are killed.
)
pindex(AUTO_CD)
cindex(cd, automatic)
item(tt(AUTO_CD) (tt(-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 tt(cd)
command to that directory.
)
pindex(AUTO_LIST)
cindex(completion, listing choices)
item(tt(AUTO_LIST) (tt(-9)))(
Automatically list choices on an ambiguous completion.
)
pindex(AUTO_MENU)
cindex(completion, menu)
item(tt(AUTO_MENU))(
Automatically use menu completion after the second consecutive request for
completion, for example by pressing the tab key repeatedly. This option
is overridden by tt(MENU_COMPLETE).
)
pindex(AUTO_NAME_DIRS)
cindex(directories, named)
item(tt(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 `tt(%~)'
and related prompt sequences, and will be available when completion
is performed on a word starting with `tt(~)'.
(Otherwise, the parameter must be used in the form `tt(~)var(param)' first.)
)
pindex(AUTO_PARAM_KEYS)
item(tt(AUTO_PARAM_KEYS))(
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 `tt(})', `tt(:)',
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 `tt(,)', which will be removed if `tt(})' is typed next.
)
pindex(AUTO_PARAM_SLASH)
item(tt(AUTO_PARAM_SLASH))(
If a parameter is completed whose content is the name of a directory,
then add a trailing slash instead of a space.
)
pindex(AUTO_PUSHD)
cindex(cd, behaving like pushd)
cindex(pushd, making cd behave like)
item(tt(AUTO_PUSHD) (tt(-N)))(
Make tt(cd) push the old directory onto the directory stack.
)
pindex(AUTO_REMOVE_SLASH)
cindex(slash, removing trailing)
item(tt(AUTO_REMOVE_SLASH))(
When the last character resulting from a completion is a slash and the next
character typed is a word delimiter or a slash, remove the slash.
)
pindex(AUTO_RESUME)
cindex(jobs, resuming automatically)
cindex(resuming jobs automatically)
item(tt(AUTO_RESUME) (tt(-W)))(
Treat single word simple commands without redirection
as candidates for resumption of an existing job.
)
pindex(BAD_PATTERN)
cindex(globbing, bad pattern)
cindex(filename generation, bad pattern)
item(tt(BAD_PATTERN) (tt(PLUS()2)))(
If a pattern for filename generation is badly formed, print an error message.
(If this option is unset, the pattern will be left unchanged.)
)
pindex(BANG_HIST)
cindex(history, enable substitution)
cindex(enable history substitution)
item(tt(BANG_HIST) (tt(PLUS()K)))(
Perform textual history expansion, bf(csh)-style,
treating the character `tt(!)' specially.
)
pindex(BARE_GLOB_QUAL)
cindex(globbing qualifiers, enable)
cindex(enable globbing qualifiers)
item(tt(BARE_GLOB_QUAL))(
In a glob pattern, treat a trailing set of parentheses as a qualifier
list, if it contains no `tt(|)', `tt(LPAR())' or (if special) `tt(~)'
characters.  See noderef(Filename Generation).
)
pindex(BASH_AUTO_LIST)
cindex(completion, listing choices, bash style)
item(tt(BASH_AUTO_LIST))(
On an ambiguous completion, automatically list choices when the
completion function is called twice in succession.  This takes
precedence over tt(AUTO_LIST).  The setting of tt(LIST_AMBIGUOUS) is
respected.  If tt(AUTO_MENU) is set, the menu behaviour will then start
with the third press.  Note that this will not work with
tt(MENU_COMPLETE), since repeated completion calls immediately cycle
through the list in that case.
)
pindex(BEEP)
cindex(beep, enabling)
cindex(enabling the beep)
item(tt(BEEP) (tt(PLUS()B)))(
Beep on error in ZLE.
)
pindex(BG_NICE)
cindex(jobs, background priority)
cindex(background jobs, priority of)
cindex(priority of background jobs)
item(tt(BG_NICE) (tt(-6)))(
Run all background jobs at a lower priority.  This option
is set by default.
)
pindex(BRACE_CCL)
cindex(brace expansion, extending)
cindex(expansion, brace, extending)
item(tt(BRACE_CCL))(
Expand expressions in braces which would not otherwise undergo brace
expansion to a lexically ordered list of all the characters.  See
noderef(Brace Expansion).
)
pindex(BSD_ECHO)
cindex(echo, BSD compatible)
item(tt(BSD_ECHO))(
Make the tt(echo) builtin compatible with the BSD manref(echo)(1) command.
This disables backslashed escape sequences in echo strings unless the
tt(-e) option is specified.
)
pindex(CDABLE_VARS)
cindex(cd, to parameter)
item(tt(CDABLE_VARS) (tt(-T)))(
If the argument to a tt(cd) command (or an implied tt(cd) with the
tt(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 `tt(~)' (see
noderef(Filename Expansion)).
)
pindex(CHASE_LINKS)
cindex(links, symbolic)
cindex(symbolic links)
item(tt(CHASE_LINKS) (tt(-w)))(
Resolve symbolic links to their true values when changing directory.
)
pindex(CLOBBER)
cindex(clobbering, of files)
cindex(file clobbering, allowing)
item(tt(CLOBBER) (tt(PLUS()C), ksh: tt(PLUS()C)))(
Allows `tt(>)' redirection to truncate existing files,
and `tt(>>)' to create files.
Otherwise `tt(>!)' or `tt(>|)' must be used to truncate a file,
and `tt(>>!)' or `tt(>>|)' to create a file.
)
pindex(COMPLETE_ALIASES)
cindex(aliases, completion of)
item(tt(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.
)
pindex(COMPLETE_IN_WORD)
item(tt(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.
)
pindex(CORRECT)
cindex(correction, spelling)
cindex(spelling correction)
item(tt(CORRECT) (tt(-0)))(
Try to correct the spelling of commands.
)
pindex(CORRECT_ALL)
item(tt(CORRECT_ALL) (tt(-O)))(
Try to correct the spelling of all arguments in a line.
)
pindex(CSH_JUNKIE_HISTORY)
cindex(csh, history style)
cindex(history style, csh)
item(tt(CSH_JUNKIE_HISTORY))(
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.
)
pindex(CSH_JUNKIE_LOOPS)
cindex(csh, loop style)
cindex(loop style, csh)
item(tt(CSH_JUNKIE_LOOPS))(
Allow loop bodies to take the form `var(list); tt(end)' instead of
`tt(do) var(list); tt(done)'.
)
pindex(CSH_JUNKIE_QUOTES)
cindex(csh, quoting style)
cindex(quoting style, csh)
item(tt(CSH_JUNKIE_QUOTES))(
Changes the rules for single- and double-quoted text to match that of
bf(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 `tt($)', `tt(`)'
or `tt(")' (and `tt(\)' itself no longer needs escaping).
Command substitutions are only expanded once, and cannot be nested.
)
pindex(CSH_NULL_GLOB)
cindex(csh, null globbing style)
cindex(null globbing style, csh)
cindex(globbing, null, style, csh)
item(tt(CSH_NULL_GLOB))(
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 tt(NULL_GLOB).
)
pindex(EQUALS)
cindex(filename expansion, =)
item(tt(EQUALS))(
Perform tt(=) filename expansion.
(See noderef(Filename Expansion).)
)
pindex(ERR_EXIT)
cindex(exit status, trapping)
item(tt(ERR_EXIT) (tt(-e), ksh: tt(-e)))(
If a command has a non-zero exit status, execute the tt(ZERR)
trap, if set, and exit.  This is disabled while running initialization
scripts.
)
pindex(EXEC)
cindex(command execution, enabling)
item(tt(EXEC) (tt(PLUS()n), ksh: tt(PLUS()n)))(
Do execute commands.  Without this option, commands are
read and checked for syntax errors, but not executed.
)
pindex(EXTENDED_GLOB)
cindex(globbing, extended)
item(tt(EXTENDED_GLOB))(
Treat the `tt(#)', `tt(~)' and `tt(^)' characters as part of patterns
for filename generation, etc.  (An initial unquoted `tt(~)'
always produces named directory expansion.)
)
pindex(EXTENDED_HISTORY)
cindex(history, timestamping)
item(tt(EXTENDED_HISTORY))(
Save beginning and ending timestamps to the history file.
The format of these timestamps is
`tt(:)var(<beginning time>)tt(:)var(<ending time>)tt(:)var(<command>)'.
)
pindex(FLOW_CONTROL)
cindex(flow control)
item(tt(FLOW_CONTROL))(
If this option is unset,
output flow control via start/stop characters (usually assigned to
^S/^Q) is disabled in the shell's editor.
)
pindex(FUNCTION_ARGZERO)
cindex($0, setting)
item(tt(FUNCTION_ARGZERO))(
When executing a shell function or sourcing a script, set tt($0)
temporarily to the name of the function/script.
)
pindex(GLOB)
cindex(globbing, enabling)
cindex(enabling globbing)
item(tt(GLOB) (tt(PLUS()F), ksh: tt(PLUS()f)))(
Perform filename generation (globbing).
(See noderef(Filename Generation).)
)
pindex(GLOBAL_RCS_FIRST)
cindex(startup files, changing order)
cindex(files, startup, changing order)
item(tt(GLOBAL_RCS_FIRST) (tt(-d)))(
If this option is set, and the tt(RCS) option is also set (as it is by
default), then the order in which startup files are sourced after
tt(/etc/zshenv) changes to tt(/etc/zprofile), tt(/etc/zshrc),
tt(/etc/zlogin), tt(.zshenv), tt(.zprofile), tt(.zshrc), tt(.zlogin).
The order of tt(.zlogout) and tt(/etc/zlogout) is not affected.
)
pindex(GLOB_ASSIGN)
item(tt(GLOB_ASSIGN))(
If this option is set, filename generation (globbing) is
performed on the right hand side of scalar parameter assignments of
the form `var(name)tt(=)var(pattern) (e.g. `tt(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 `var(name)tt(=LPAR())var(value)tt(RPAR())'
(e.g. `tt(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.
)
pindex(GLOB_COMPLETE)
item(tt(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 tt(MENU_COMPLETE). The matches are generated
as if a `tt(*)' is added to the end of the word or inserted at the cursor if
tt(COMPLETE_IN_WORD) is set.  Since this doesn't use globbing, it
works not only for files but for all completions, such as options,
user names, etc.
)
pindex(GLOB_DOTS)
cindex(globbing, of . files)
item(tt(GLOB_DOTS) (tt(-4)))(
Do not require a leading `tt(.)' in a filename to be matched explicitly.
)
pindex(GLOB_SUBST)
item(tt(GLOB_SUBST))(
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.
)
pindex(HASH_CMDS)
cindex(hashing, of commands)
cindex(command hashing)
item(tt(HASH_CMDS))(
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.
)
pindex(HASH_DIRS)
cindex(hashing, of directories)
cindex(directories, hashing)
item(tt(HASH_DIRS))(
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 tt(HASH_CMDS) is unset.
)
pindex(HASH_LIST_ALL)
item(tt(HASH_LIST_ALL))(
Whenever a command completion is attempted, make sure the entire
command path is hashed first.  This makes the first completion slower.
)
pindex(HIST_ALLOW_CLOBBER)
item(tt(HIST_ALLOW_CLOBBER))(
Add `tt(|)' to output redirections in the history.  This allows history
references to clobber files even when tt(CLOBBER) is unset.
)
pindex(HIST_BEEP)
cindex(history beeping)
cindex(beep, history)
item(tt(HIST_BEEP))(
Beep when an attempt is made to access a history entry which
isn't there.
)
pindex(HIST_IGNORE_DUPS)
cindex(history, ignoring duplicates)
item(tt(HIST_IGNORE_DUPS) (tt(-h)))(
Do not enter command lines into the history list
if they are duplicates of the previous event.
)
pindex(HIST_IGNORE_SPACE)
cindex(history, ignoring spaces)
item(tt(HIST_IGNORE_SPACE) (tt(-g)))(
Do not enter command lines into the history list
if any command on the line begins with a blank.
)
pindex(HIST_NO_FUNCTIONS)
item(tt(HIST_NO_FUNCTIONS))(
Do not store function definitions in the history list.
)
pindex(HIST_NO_STORE)
item(tt(HIST_NO_STORE))(
Remove the tt(history) (tt(fc -l)) command from
the history when invoked.
)
pindex(HIST_REDUCE_BLANKS)
item(tt(HIST_REDUCE_BLANKS))(
Remove superfluous blanks from each command line
being added to the history list.
)
pindex(HIST_VERIFY)
cindex(history, verifying substitution)
item(tt(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.
)
pindex(HUP)
cindex(jobs, HUP)
item(tt(HUP))(
Send the tt(HUP) signal to running jobs when the
shell exits.
)
pindex(IGNORE_BRACES)
cindex(disabling brace expansion)
cindex(brace expansion, disabling)
cindex(expansion, brace, disabling)
item(tt(IGNORE_BRACES) (tt(-I)))(
Do not perform brace expansion.
)
pindex(IGNORE_EOF)
cindex(EOF, ignoring)
item(tt(IGNORE_EOF) (tt(-7)))(
Do not exit on end-of-file.  Require the use
of tt(exit) or tt(logout) instead.
However, ten consecutive EOFs will cause the shell to exit anyway,
to avoid the shell hanging if its tty goes away.
)
pindex(INTERACTIVE)
item(tt(INTERACTIVE) (tt(-i), ksh: tt(-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 tt(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.
)
pindex(INTERACTIVE_COMMENTS)
cindex(comments, in interactive shells)
item(tt(INTERACTIVE_COMMENTS) (tt(-k)))(
Allow comments even in interactive shells.
)
pindex(KSH_ARRAYS)
cindex(arrays, ksh style)
cindex(array style, ksh)
cindex(ksh, array style)
item(tt(KSH_ARRAYS))(
Emulate bf(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 (`tt(${path[2]})' rather
than just `tt($path[2])').
)
pindex(KSH_AUTOLOAD)
item(tt(KSH_AUTOLOAD))(
Emulate bf(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 bf(ksh)-style case - of the file
containing only a simple definition of the function - is always handled
in the bf(ksh)-compatible manner.)
)
pindex(KSH_GLOB)
item(tt(KSH_GLOB))(
In pattern matching, the interpretation of parentheses is affected by
a preceding `tt(@)', `tt(*)', `tt(+)', `tt(?)' or `tt(!)'.
See noderef(Filename Generation).
)
pindex(KSH_OPTION_PRINT)
cindex(option printing, ksh style)
cindex(option printing style, ksh)
cindex(ksh, option printing style)
item(tt(KSH_OPTION_PRINT))(
Alters the way options settings are printed.
)
pindex(LIST_AMBIGUOUS)
cindex(ambiguous completion)
cindex(completion, ambiguous)
item(tt(LIST_AMBIGUOUS))(
This option works when tt(AUTO_LIST) or tt(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 tt(BASH_AUTO_LIST), this means that the list
will be delayed to the third call of the function.
)
pindex(LIST_BEEP)
cindex(beep, ambiguous completion)
cindex(completion, beep on ambiguous)
item(tt(LIST_BEEP))(
Beep on an ambiguous completion.
)
pindex(LIST_TYPES)
cindex(marking file types)
cindex(files, marking type of)
item(tt(LIST_TYPES) (tt(-X)))(
When listing files that are possible completions, show the
type of each file with a trailing identifying mark.
)
pindex(LOCAL_OPTIONS)
item(tt(LOCAL_OPTIONS))(
If this option is set at the point of return from a shell function,
all the options (including this one) which were in force upon entry to
the function are restored.  Otherwise, only this option and the
tt(XTRACE) and tt(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 `tt(emulate zsh; setopt localoptions)'.
)
pindex(LOGIN)
item(tt(LOGIN) (tt(-l), ksh: tt(-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 tt(argv[0]) passed to the shell is a `tt(-)'.
)
pindex(LONG_LIST_JOBS)
cindex(jobs, list format)
item(tt(LONG_LIST_JOBS) (tt(-R)))(
List jobs in the long format by default.
)
pindex(MAGIC_EQUAL_SUBST)
item(tt(MAGIC_EQUAL_SUBST))(
All unquoted arguments of the form `var(anything)tt(=)var(expression)'
appearing after the command name have filename expansion (that is,
where var(expression) has a leading `tt(~)' or `tt(=)') performed on
var(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
tt(echo foo=~/bar:~/rod), both occurrences of tt(~) would be replaced.
Note that this happens anyway with tt(typeset) and similar statements.
)
pindex(MAIL_WARNING)
cindex(mail, warning of reading)
item(tt(MAIL_WARNING) (tt(-U)))(
Print a warning message if a mail file has been
accessed since the shell last checked.
)
pindex(MARK_DIRS)
cindex(directories, marking)
cindex(marking directories)
item(tt(MARK_DIRS) (tt(-8), ksh: tt(-X)))(
Append a trailing `tt(/)' to all directory
names resulting from filename generation (globbing).
)
pindex(MENU_COMPLETE)
cindex(completion, menu)
item(tt(MENU_COMPLETE) (tt(-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.
tt(reverse-menu-complete) may be used to loop through the list
in the other direction. This option overrides tt(AUTO_MENU).
)
pindex(MONITOR)
cindex(job control, allowing)
item(tt(MONITOR) (tt(-m), ksh: tt(-m)))(
Allow job control.  Set by default in interactive shells.
)
pindex(MULTIOS)
item(tt(MULTIOS))(
Perform implicit bf(tee)s or bf(cat)s when multiple
redirections are attempted (see noderef(Redirection)).
)
pindex(NOMATCH)
cindex(globbing, no matches)
item(tt(NOMATCH) (tt(PLUS()3)))(
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 `tt(~)' or `tt(=)'.
)
pindex(NOTIFY)
cindex(background jobs, notification)
cindex(notification of background jobs)
item(tt(NOTIFY) (tt(-5), ksh: tt(-b)))(
Report the status of background jobs immediately, rather than
waiting until just before printing a prompt.
)
pindex(NULL_GLOB)
cindex(globbing, no matches)
item(tt(NULL_GLOB) (tt(-G)))(
If a pattern for filename generation has no matches,
delete the pattern from the argument list instead
of reporting an error.  Overrides tt(NOMATCH).
)
pindex(NUMERIC_GLOB_SORT)
cindex(globbing, sorting numerically)
item(tt(NUMERIC_GLOB_SORT))(
If numeric filenames are matched by a filename generation pattern,
sort the filenames numerically rather than lexicographically.
)
pindex(OVERSTRIKE)
cindex(editor, overstrike mode)
cindex(overstrike mode, of editor)
item(tt(OVERSTRIKE))(
Start up the line editor in overstrike mode.
)
pindex(PATH_DIRS)
cindex(path search, extended)
item(tt(PATH_DIRS) (tt(-Q)))(
Perform a path search even on command names with slashes in them.
Thus if `tt(/usr/local/bin)' is in the user's path, and he types
`tt(X11/xinit)', the command `tt(/usr/local/bin/X11/xinit)' will be executed
(assuming it exists).
Commands explicitly beginning with `tt(/)', `tt(./)' or `tt(../)'
are not subject to the path search.
This also applies to the tt(.) builtin,
and to searches for modules performed by the tt(zmodload) builtin.
)
pindex(POSIX_BUILTINS)
item(tt(POSIX_BUILTINS))(
When this option is set the tt(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 tt(command) builtin.  Special
builtins are
tt(.),
tt(:),
tt(break),
tt(continue),
tt(declare),
tt(eval),
tt(exit),
tt(export),
tt(integer),
tt(local),
tt(readonly),
tt(return),
tt(set),
tt(shift),
tt(source),
tt(times),
tt(trap) and
tt(unset).
)
pindex(PRINT_EIGHT_BIT)
cindex(exit status, printing)
item(tt(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 manref(ctype)(3)).
)
pindex(PRINT_EXIT_VALUE)
cindex(exit status, printing)
item(tt(PRINT_EXIT_VALUE) (tt(-1)))(
Print the exit value of programs with non-zero exit status.
)
pindex(PRIVILEGED)
cindex(privileged mode)
cindex(mode, privileged)
item(tt(PRIVILEGED) (tt(-p), ksh: tt(-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 `tt(sh)' or `tt(ksh)' with this option set,
tt(/etc/suid_profile) is sourced (after tt(/etc/profile) on interactive
shells). Sourcing tt(~/.profile) is disabled and the contents of the
tt(ENV) variable is ignored. This option cannot be changed using the
tt(-m) option of tt(setopt) and tt(unsetopt), and changing it inside a
function always changes it globally regardless of the tt(LOCAL_OPTIONS)
option.
)
pindex(PROMPT_BANG)
cindex(prompt, ! expansion)
item(tt(PROMPT_BANG))(
If set, `tt(!)' is treated specially in prompt expansion.
See noderef(Prompt Expansion).
)
pindex(PROMPT_CR)
cindex(prompt, with CR)
item(tt(PROMPT_CR) (tt(PLUS()V)))(
Print a carriage return just before printing
a prompt in the line editor.
)
pindex(PROMPT_PERCENT)
cindex(prompt, % expansion)
item(tt(PROMPT_PERCENT))(
If set, `tt(%)' is treated specially in prompt expansion.
See noderef(Prompt Expansion).
)
pindex(PROMPT_SUBST)
cindex(prompt, parameter expansion)
item(tt(PROMPT_SUBST))(
If set, em(parameter expansion), em(command substitution) and
em(arithmetic expansion) are performed in prompts.
)
pindex(PUSHD_IGNORE_DUPS)
cindex(directory stack, ignoring duplicates)
item(tt(PUSHD_IGNORE_DUPS))(
Don't push multiple copies of the same directory onto the directory stack.
)
pindex(PUSHD_MINUS)
cindex(directory stack, controlling syntax)
item(tt(PUSHD_MINUS))(
Exchanges the meanings of `tt(PLUS())' and `tt(-)'
when used with a number to specify a directory in the stack.
)
pindex(PUSHD_SILENT)
cindex(directory stack, silencing)
item(tt(PUSHD_SILENT) (tt(-E)))(
Do not print the directory stack after tt(pushd) or tt(popd).
)
pindex(PUSHD_TO_HOME)
cindex(pushd, to home)
item(tt(PUSHD_TO_HOME) (tt(-D)))(
Have tt(pushd) with no arguments act like `tt(pushd $HOME)'.
)
pindex(RC_EXPAND_PARAM)
cindex(rc, parameter expansion style)
cindex(parameter expansion style, rc)
item(tt(RC_EXPAND_PARAM) (tt(-P)))(
Array expansions of the form
`var(foo)tt(${)var(xx)tt(})var(bar)', where the parameter
var(xx) is set to tt(LPAR())var(a b c)tt(RPAR()), are substituted with
`var(fooabar foobbar foocbar)' instead of the default
`var(fooa b cbar)'.
)
pindex(RC_QUOTES)
cindex(rc, quoting style)
cindex(quoting style, rc)
item(tt(RC_QUOTES))(
Allow the character sequence `tt('')' to signify a single quote
within singly quoted strings.
)
pindex(RCS)
cindex(startup files, sourcing)
item(tt(RCS) (tt(PLUS()f)))(
After tt(/etc/zshenv) is sourced on startup, source the
tt(.zshenv), tt(/etc/zprofile), tt(.zprofile),
tt(/etc/zshrc), tt(.zshrc), tt(/etc/zlogin), tt(.zlogin), and tt(.zlogout)
files, as described in noderef(Files).
If this option is unset, only the tt(/etc/zshenv) file is sourced.
)
pindex(REC_EXACT)
cindex(completion, exact matches)
item(tt(REC_EXACT) (tt(-S)))(
In completion, recognize exact matches even
if they are ambiguous.
)
pindex(RESTRICTED)
cindex(restricted shell)
item(tt(RESTRICTED) (tt(-r)))(
Enables restricted mode.  This option cannot be changed using
tt(unsetopt), and setting it inside a function always changes it
globally regardless of the tt(LOCAL_OPTIONS) option.  See
noderef(Restricted Shell).
)
pindex(RM_STAR_SILENT)
cindex(rm *, querying before)
cindex(querying before rm *)
item(tt(RM_STAR_SILENT) (tt(-H)))(
Do not query the user before executing `tt(rm *)' or `tt(rm path/*)'.
)
pindex(RM_STAR_WAIT)
cindex(rm *, waiting before)
cindex(waiting before rm *)
item(tt(RM_STAR_WAIT))(
If querying the user before executing `tt(rm *)' or `tt(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 `tt(*)' in ZLE (with tab).
)
pindex(SH_FILE_EXPANSION)
cindex(sh, expansion style)
cindex(expansion style, sh)
item(tt(SH_FILE_EXPANSION))(
Perform filename expansion (e.g., ~ expansion) em(before)
parameter expansion, command substitution, arithmetic expansion
and brace expansion.
If this option is unset, it is performed em(after)
brace expansion, so things like `tt(~$USERNAME)' and
`tt(~{pfalstad,rc})' will work.
)
pindex(SH_GLOB)
cindex(sh, globbing style)
cindex(globbing style, sh)
item(tt(SH_GLOB))(
Disables the special meaning of `tt(LPAR())', `tt(|)', `tt(RPAR())'
and 'tt(<)' 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 tt(sh) or tt(ksh).
)
pindex(SHIN_STDIN)
item(tt(SHIN_STDIN) (tt(-s), ksh: tt(-s)))(
Commands are being read from the standard input.
Commands are read from standard input if no command is specified with
tt(-c) and no file of commands is specified.  If tt(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
em(actually) being read from standard input.
The value of this option cannot be changed anywhere other than the command line.
)
pindex(SH_OPTION_LETTERS)
cindex(sh, single letter options style)
cindex(ksh, single letter options style)
cindex(single letter options, ksh style)
cindex(options, single letter, ksh style)
item(tt(SH_OPTION_LETTERS))(
If this option is set the shell tries to interpret single letter options
(which are used with tt(set) and tt(setopt)) like bf(ksh) does.
This also affects the value of the tt(-) special parameter.
)
pindex(SHORT_LOOPS)
item(tt(SHORT_LOOPS))(
Allow the short forms of tt(for), tt(select),
tt(if), and tt(function) constructs.
)
pindex(SH_WORD_SPLIT)
cindex(field splitting, sh style)
cindex(sh, field splitting style)
item(tt(SH_WORD_SPLIT) (tt(-y)))(
Causes field splitting to be performed on unquoted parameter expansions.
Note that this option has nothing to do with word splitting.
(See noderef(Parameter Expansion).)
)
pindex(SINGLE_COMMAND)
cindex(single command)
pindex(INTERACTIVE, use of)
item(tt(SINGLE_COMMAND) (tt(-t), ksh: tt(-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
tt(INTERACTIVE) option is explicitly set on the command line.
The value of this option cannot be changed anywhere other than the command line.
)
pindex(SINGLE_LINE_ZLE)
cindex(editor, single line mode)
item(tt(SINGLE_LINE_ZLE) (tt(-M)))(
Use single-line command line editing instead of multi-line.
)
pindex(SUN_KEYBOARD_HACK)
cindex(sun keyboard, annoying)
cindex(annoying keyboard, sun)
item(tt(SUN_KEYBOARD_HACK) (tt(-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.
)
pindex(UNSET)
cindex(parameters, substituting unset)
cindex(unset parameters, substituting)
item(tt(UNSET) (tt(PLUS()u), ksh: tt(PLUS()u)))(
Treat unset parameters as if they were empty when substituting.
Otherwise they are treated as an error.
)
pindex(VERBOSE)
cindex(tracing, of input lines)
cindex(input, tracing)
item(tt(VERBOSE) (tt(-v), ksh: tt(-v)))(
Print shell input lines as they are read.
)
pindex(XTRACE)
cindex(tracing, of commands)
cindex(commands, tracing)
item(tt(XTRACE) (tt(-x), ksh: tt(-x)))(
Print commands and their arguments as they are executed.
)
pindex(ZLE)
cindex(editor, enabling)
cindex(enabling the editor)
item(tt(ZLE) (tt(-Z)))(
Use the zsh line editor.
)
enditem()
texinode(Option Aliases)(Single Letter Options)(Description of Options)(Options)
sect(Option Aliases)
cindex(options, 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.

startitem()
pindex(BRACE_EXPAND)
item(tt(BRACE_EXPAND))(
em(NO_)tt(IGNORE_BRACES)
(ksh and bash compatibility)
)
pindex(DOT_GLOB)
item(tt(DOT_GLOB))(
tt(GLOB_DOTS)
(bash compatibility)
)
pindex(HASH_ALL)
item(tt(HASH_ALL))(
tt(HASH_CMDS)
(bash compatibility)
)
pindex(HIST_APPEND)
item(tt(HIST_APPEND))(
tt(APPEND_HISTORY)
(bash compatibility)
)
pindex(HIST_EXPAND)
item(tt(HIST_EXPAND))(
tt(BANG_HIST)
(bash compatibility)
)
pindex(LOG)
item(tt(LOG))(
em(NO_)tt(HIST_NO_FUNCTIONS)
(ksh compatibility)
)
pindex(MAIL_WARN)
item(tt(MAIL_WARN))(
tt(MAIL_WARNING)
(bash compatibility)
)
pindex(ONE_CMD)
item(tt(ONE_CMD))(
tt(SINGLE_COMMAND)
(bash compatibility)
)
pindex(PHYSICAL)
item(tt(PHYSICAL))(
tt(CHASE_LINKS)
(ksh and bash compatibility)
)
pindex(PROMPT_VARS)
item(tt(PROMPT_VARS))(
tt(PROMPT_SUBST)
(bash compatibility)
)
pindex(STDIN)
item(tt(STDIN))(
tt(SHIN_STDIN)
(ksh compatibility)
)
pindex(TRACK_ALL)
item(tt(TRACK_ALL))(
tt(HASH_CMDS)
(ksh compatibility)
)
enditem()
texinode(Single Letter Options)()(Option Aliases)(Options)
sect(Single Letter Options)
cindex(options, single letter)
cindex(single letter options)
subsect(Default set)
startsitem()
sitem(tt(-0))(CORRECT)
sitem(tt(-1))(PRINT_EXIT_VALUE)
sitem(tt(-2))(em(NO_)BAD_PATTERN)
sitem(tt(-3))(em(NO_)NOMATCH)
sitem(tt(-4))(GLOB_DOTS)
sitem(tt(-5))(NOTIFY)
sitem(tt(-6))(BG_NICE)
sitem(tt(-7))(IGNORE_EOF)
sitem(tt(-8))(MARK_DIRS)
sitem(tt(-9))(AUTO_LIST)
sitem(tt(-B))(em(NO_)BEEP)
sitem(tt(-C))(em(NO_)CLOBBER)
sitem(tt(-D))(PUSHD_TO_HOME)
sitem(tt(-E))(PUSHD_SILENT)
sitem(tt(-F))(em(NO_)GLOB)
sitem(tt(-G))(NULL_GLOB)
sitem(tt(-H))(RM_STAR_SILENT)
sitem(tt(-I))(IGNORE_BRACES)
sitem(tt(-J))(AUTO_CD)
sitem(tt(-K))(em(NO_)BANG_HIST)
sitem(tt(-L))(SUN_KEYBOARD_HACK)
sitem(tt(-M))(SINGLE_LINE_ZLE)
sitem(tt(-N))(AUTO_PUSHD)
sitem(tt(-O))(CORRECT_ALL)
sitem(tt(-P))(RC_EXPAND_PARAM)
sitem(tt(-Q))(PATH_DIRS)
sitem(tt(-R))(LONG_LIST_JOBS)
sitem(tt(-S))(REC_EXACT)
sitem(tt(-T))(CDABLE_VARS)
sitem(tt(-U))(MAIL_WARNING)
sitem(tt(-V))(em(NO_)PROMPT_CR)
sitem(tt(-W))(AUTO_RESUME)
sitem(tt(-X))(LIST_TYPES)
sitem(tt(-Y))(MENU_COMPLETE)
sitem(tt(-Z))(ZLE)
sitem(tt(-a))(ALL_EXPORT)
sitem(tt(-e))(ERR_EXIT)
sitem(tt(-f))(em(NO_)RCS)
sitem(tt(-g))(HIST_IGNORE_SPACE)
sitem(tt(-h))(HIST_IGNORE_DUPS)
sitem(tt(-i))(INTERACTIVE)
sitem(tt(-k))(INTERACTIVE_COMMENTS)
sitem(tt(-l))(LOGIN)
sitem(tt(-m))(MONITOR)
sitem(tt(-n))(em(NO_)EXEC)
sitem(tt(-p))(PRIVILEGED)
sitem(tt(-r))(RESTRICTED)
sitem(tt(-s))(SHIN_STDIN)
sitem(tt(-t))(SINGLE_COMMAND)
sitem(tt(-u))(em(NO_)UNSET)
sitem(tt(-v))(VERBOSE)
sitem(tt(-w))(CHASE_LINKS)
sitem(tt(-x))(XTRACE)
sitem(tt(-y))(SH_WORD_SPLIT)
endsitem()
subsect(sh/ksh emulation set)
startsitem()
sitem(tt(-C))(em(NO_)CLOBBER)
sitem(tt(-X))(MARK_DIRS)
sitem(tt(-a))(ALL_EXPORT)
sitem(tt(-b))(NOTIFY)
sitem(tt(-e))(ERR_EXIT)
sitem(tt(-f))(em(NO_)GLOB)
sitem(tt(-i))(INTERACTIVE)
sitem(tt(-l))(LOGIN)
sitem(tt(-m))(MONITOR)
sitem(tt(-n))(em(NO_)EXEC)
sitem(tt(-p))(PRIVILEGED)
sitem(tt(-r))(RESTRICTED)
sitem(tt(-s))(SHIN_STDIN)
sitem(tt(-t))(SINGLE_COMMAND)
sitem(tt(-u))(em(NO_)UNSET)
sitem(tt(-v))(VERBOSE)
sitem(tt(-x))(XTRACE)
endsitem()
subsect(Also note)
startsitem()
sitem(tt(-A))(Used by tt(set) for setting arrays)
sitem(tt(-b))(Used on the command line to specify end of option processing)
sitem(tt(-c))(Used on the command line to specify a single command)
sitem(tt(-m))(Used by tt(setopt) for pattern-matching option setting)
sitem(tt(-o))(Used in all places to allow use of long option names)
sitem(tt(-s))(Used by tt(set) to sort positional parameters)
endsitem()