This is Info file zsh.info, produced by Makeinfo-1.55 from the input
file zsh.texi.

   This is a texinfo version of the man page for the Z Shell,
originally by Paul Falstad.  It was converted from the `zsh.1' file
distributed with zsh v2.5.0.  The conversion was done by Jonathan
Hardwick, `jch@cs.cmu.edu', who would love to hear of any errors he
introduced or texinfo rules he broke.  The text remains the work of
Paul Falstad.


File: zsh.info,  Node: Options,  Next: Shell Builtin Commands,  Prev: Parameters,  Up: Top

Options
*******

The following options may be set upon invocation of the shell, or with
the `set' or `setopt' builtins.  The names are case-insensitive and
underscores are ignored, that is, `allexport' is equivalent to
`A_lleXP_ort'.

`ALL_EXPORT (-a)'
     All parameters subsequently defined are automatically exported.

`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 no numeric argument.

`ALWAYS_TO_END'
     If a completion with the cursor in the word was started and it
     results in only one match, the cursor is placed at the end of the
     word.

`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.  *Note Shell Builtin
     Commands::, for the `fc' command.

`AUTO_CD (-J)'
     If a command is not in the hash table, and there exists an
     executable directory by that name, perform the `cd' command to
     that directory.

`AUTO_LIST (-9)'
     Automatically list choices on an ambiguous completion.

`AUTO_MENU'
     Automatically use menu completion after the second consecutive
     request for completion, for example by pressing the TAB key
     repeatedly.  This option is overriden 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 in the usual form
     `~param'.  If this option is not set, the parameter must be used in
     that form for it to become a name (a command-line completion is
     sufficient for this).

`AUTO_PARAM_KEYS'
     If a parameter name was completed and the next character typed is
     one of those that have to come directly after the name (like `}',
     `:', etc.), they are placed there automatically.

`AUTO_PUSHD (-N)'
     Make `cd' act like `pushd'.

`AUTO_REMOVE_SLASH'
     When the last character resulting from a completion is a slash and
     the next character typed is a word delimiter, remove the slash.

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

`BGNICE (-6)'
     Run all background jobs at a lower priority.  This option is set by
     default.

`BRACE_CCL'
     Allow brace expansions of the form `{a-zA-Z}', etc.

`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
     `~' (*note Filename Expansion::.).

`CHASE_LINKS (-w)'
     Resolve symbolic links to their true values.

`COMPLETE_ALIASES'
     If set, aliases on the command line are not internally substituted
     before completion is attempted.

`COMPLETE_IN_WORD'
     If unset, the cursor is moved to the end of the word if completion
     is started.  Otherwise it stays where it is 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'
     A history reference without an event specifier will always refer
     to the previous command.

`CSH_JUNKIE_LOOPS'
     Allow loop bodies to take the form `LIST; end' instead of `do
     LIST; done'.

`CSH_JUNKIE_PAREN'
     Allow `for', `if' and `while' loops where the argument list is
     given in parentheses.  Otherwise, the parentheses will be treated
     as specifying a subshell.

`CSH_JUNKIE_QUOTES'
     Complain if a quoted expression runs off the end of a line; prevent
     quoted expressions from containing unescaped newlines.

`GLOB_SUBST'
     Treat any characters resulting from parameter substitution as being
     eligible for file expansion and filename generation, and any
     characters resulting from command substitution as being eligible
     for filename generation.

`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 `NULL_GLOB'.

`ERR_EXIT (-e)'
     If a command has a non-zero exit status, execute the `ZERR' trap,
     if set, and exit.

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

`EXTENDED_HISTORY'
     Save beginning and ending timestamps to the history file.  The
     format of these timestamps is `:<BEGINNING TIME>:<ENDING
     TIME>:<COMMAND>'.

`GLOB_COMPLETE'
     When the current word has a glob pattern, do not insert all the
     words resulting from the expansion but cycle through them like
     `MENU_COMPLETE'.  If no matches are found, a `*' is added to the
     end of the word, or inserted at the cursor if `COMPLETE_IN_WORD'
     is set, and completion is attempted again.  Using patterns works
     not only for files but for all completions, such as options, user
     names, etc.

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

`HASH_CMDS'
     Place the location of each command in the hash table the first
     time it is executed.  If this option is unset, no path hashing
     will be done at all.

`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 `HASH_CMDS' is unset.

`HASH_LIST_ALL'
     Whenever a command completion is attempted, make sure the entire
     command path is hashed first.  This makes the first completion
     slower.

`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)'
     Do not enter command lines into the history list if they begin
     with a blank.

`HIST_LIT (-j)'
     Use literal (unparsed) versions of the history lines in the editor.

`HIST_NO_STORE'
     Remove the `history' (`fc -l') command from the history when
     invoked.

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

`IGNORE_BRACES (-I)'
     Do not perform brace expansion.

`IGNORE_EOF (-7)'
     Do not exit on end-of-file.  Require the use of `exit' or `logout'
     instead.

`INTERACTIVE (-i)'
     This is an interactive shell.

`INTERACTIVE_COMMENTS (-k)'
     Allow comments even in interactive shells.

`KSH_OPTION_PRINT'
     Alters the way options settings are printed.

`LIST_AMBIGUOUS'
     If this option is set completions are shown only if the completions
     don't have an unambiguous prefix or suffix that could be inserted
     in the command line.

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

`LOGIN (-l)'
     This is a login shell.

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

`MAGIC_EQUAL_SUBST'
     All unquoted arguments of the form `IDENTIFIER=EXPRESSION' have
     file expansion performed on EXPRESSION as if it were a parameter
     assignment, although the argument is not otherwise treated
     specially.

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

`MARK_DIRS (-8)'
     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 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'.

`MONITOR (-m)'
     Allow job control.  Set by default in interactive shells.

`NO_BAD_PATTERN (-2)'
     If a pattern for filename generation is badly formed, leave it
     unchanged in the argument list instead of printing an error.

`NO_BANG_HIST (-K)'
     Do not perform textual history substitution.  Do not treat the `!'
     character specially.

`NO_BEEP (-B)'
     Do not beep.

`NO_CLOBBER (-1)'
     Prevents `>' redirection from truncating existing files.  `>!' may
     be used to truncate a file instead.  Also prevents `>>' from
     creating files.  `>>!' may be used instead.

`NO_EQUALS'
     Don't perform `=' filename substitution.

`NO_EXEC (-n)'
     Read commands and check them for syntax errors, but do not execute
     them.

`NO_FLOW_CONTROL'
     Disable output flow control via start/stop characters (usually
     assigned to `^S'/`^Q') in the shell's editor.

`NO_GLOB (-F)'
     Disable filename generation.

`NO_HIST_BEEP'
     Don't beep when an attempt is made to access a history entry which
     isn't there.

`NO_HUP'
     Don't send the `HUP' signal to running jobs when the shell exits.

`NO_LIST_BEEP'
     Don't beep on an ambiguous completion.

`NO_NOMATCH (-3)'
     If a pattern for filename generation has no matches, leave it
     unchanged in the argument list instead of printing an error.  This
     also applies to file expansion of an initial `~' or `='.

`NO_PROMPT_CR (-V)'
     Don't print a carriage return just before printing a prompt in the
     line editor.

`NO_RCS (-f)'
     Source only the `/etc/zshenv' file.  Do not source the `.zshenv',
     `/etc/zprofile', `.zprofile', `/etc/zshrc', `.zshrc',
     `/etc/zlogin', `.zlogin', or `.zlogout' files.

`NO_SHORT_LOOPS'
     Disallow the short forms of `for', `select', `if', and `function'
     constructs.

`NOTIFY (-5)'
     Report the status of background jobs immediately, rather than
     waiting until just before printing a prompt.

`NO_UNSET (-u)'
     Treat unset parameters as an error when substituting.

`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 `NO_NOMATCH'.

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

`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).  This applies to the `.' builtin as well as to command
     execution.  Commands explicitly beginning with `./' or `../' are
     not subject to path search.

`PRINT_EXIT_VALUE (-C)'
     Print the exit value of programs with non-zero exit status.

`PROMPT_SUBST'
     Expressions like `${...}', `$(...)', and `$[...]' in prompts will
     be expanded.

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

`PUSHD_MINUS'
     *Note Shell Builtin Commands::, for the `popd' command.

`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)'
     *Note Parameter Expansion::.

`RC_QUOTES'
     Allow the character sequence `''' to signify a single quote within
     singly quoted strings.

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

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

`SHIN_STDIN (-s)'
     Read commands from the standard input.

`SH_WORD_SPLIT (-y)'
     *Note Parameter Expansion::.

`SINGLE_LINE_ZLE (-M)'
     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.

`VERBOSE (-v)'
     Print shell input lines as they are read.

`XTRACE (-x)'
     Print commands and their arguments as they are executed.

`ZLE (-Z)'
     Use the zsh line editor.

