typeset [ {+|-}AHUaghlmrtux ] [ {+|-}EFLRZip [ n ] ]
        [ + ] [ name[=value] ... ]
typeset -T [ {+|-}Uglrux ] [ {+|-}LRZp [ n ] ]
        [ + | SCALAR[=value] array[=(value ...)] [ sep ] ]
typeset -f [ {+|-}TUkmtuz ] [ + ] [ name ... ]
       Set or display attributes and values for shell parameters.

       Except as noted below for control flags that change  the  behav-
       ior,  a parameter is created for each name that does not already
       refer to one.  When inside a function, a new parameter  is  cre-
       ated  for every name (even those that already exist), and is un-
       set again when the function completes.  See  `Local  Parameters'
       in  zshparam(1).   The same rules apply to special shell parame-
       ters, which retain their special attributes when made local.

       For each name=value assignment, the parameter  name  is  set  to
       value.   If the assignment is omitted and name does not refer to
       an existing parameter, a new parameter is  intialized  to  empty
       string,  zero, or empty array (as appropriate), unless the shell
       option TYPESET_TO_UNSET is set.  When that option  is  set,  the
       parameter  attributes are recorded but the parameter remains un-
       set.

       If the shell option TYPESET_SILENT is not set, for each  remain-
       ing  name  that  refers  to a parameter that is already set, the
       name and value of the parameter are printed in the  form  of  an
       assignment.  Nothing is printed for newly-created parameters, or
       when  any  attribute flags listed below are given along with the
       name.  Using `+' instead of  minus  to  introduce  an  attribute
       turns it off.

       If  no  name  is present, the names and values of all parameters
       are printed.  In this case the attribute flags restrict the dis-
       play to only those parameters that have  the  specified  attrib-
       utes,  and  using `+' rather than `-' to introduce the flag sup-
       presses printing of the values of parameters when  there  is  no
       parameter name.

       All  forms  of  the command handle scalar assignment.  Array as-
       signment is possible if any of the reserved words  declare,  ex-
       port, float, integer, local, readonly or typeset is matched when
       the line is parsed (N.B. not when it is executed).  In this case
       the  arguments  are  parsed as assignments, except that the `+='
       syntax and the GLOB_ASSIGN option are not supported, and  scalar
       values  after  =  are  not split further into words, even if ex-
       panded (regardless of the setting  of  the  KSH_TYPESET  option;
       this option is obsolete).

       Examples  of  the  differences between command and reserved word
       parsing:

              # Reserved word parsing
              typeset svar=$(echo one word) avar=(several words)

       The above creates a scalar parameter svar and an array parameter
       avar as if the assignments had been

              svar="one word"
              avar=(several words)

       On the other hand:

              # Normal builtin interface
              builtin typeset svar=$(echo two words)

       The builtin keyword causes the above to use the standard builtin
       interface to typeset in which argument parsing is  performed  in
       the  same  way  as  for  other commands.  This example creates a
       scalar svar containing the value two and another scalar  parame-
       ter  words with no value.  An array value in this case would ei-
       ther cause an error or be treated as  an  obscure  set  of  glob
       qualifiers.

       Arbitrary arguments are allowed if they take the form of assign-
       ments  after command line expansion; however, these only perform
       scalar assignment:

              var='svar=val'
              typeset $var

       The above sets the scalar  parameter  svar  to  the  value  val.
       Parentheses  around  the  value within var would not cause array
       assignment as they will be treated as ordinary  characters  when
       $var is substituted.  Any non-trivial expansion in the name part
       of  the  assignment  causes  the  argument to be treated in this
       fashion:

              typeset {var1,var2,var3}=name

       The above syntax is valid, and has the expected effect  of  set-
       ting  the  three  parameters  to the same value, but the command
       line is parsed as a set of three normal command  line  arguments
       to  typeset after expansion.  Hence it is not possible to assign
       to multiple arrays by this means.

       Note that each interface to any of the commands may be  disabled
       separately.   For example, `disable -r typeset' disables the re-
       served word interface to typeset, exposing  the  builtin  inter-
       face,  while  `disable typeset' disables the builtin.  Note that
       disabling the reserved word  interface  for  typeset  may  cause
       problems  with the output of `typeset -p', which assumes the re-
       served word interface is available in order to restore array and
       associative array values.

       Unlike parameter assignment statements, typeset's exit status on
       an assignment that involves a command substitution does not  re-
       flect  the  exit status of the command substitution.  Therefore,
       to test for an error in a command substitution, separate the de-
       claration of the parameter from its initialization:

              # WRONG
              typeset var1=$(exit 1) || echo "Trouble with var1"

              # RIGHT
              typeset var1 && var1=$(exit 1) || echo "Trouble with var1"

       To initialize a parameter param to a command output and mark  it
       readonly, use typeset -r param or readonly param after the para-
       meter assignment statement.

       If  no  attribute  flags are given, and either no name arguments
       are present or the flag +m is used,  then  each  parameter  name
       printed  is preceded by a list of the attributes of that parame-
       ter (array, association, exported, float, integer, readonly,  or
       undefined  for  autoloaded parameters not yet loaded).  If +m is
       used with attribute flags, and all those  flags  are  introduced
       with  +, the matching parameter names are printed but their val-
       ues are not.

       The following control flags change the behavior of typeset:

       +      If `+' appears by itself in a separate word as  the  last
              option,  then the names of all parameters (functions with
              -f) are printed, but the  values  (function  bodies)  are
              not.   No  name  arguments may appear, and it is an error
              for any other options to follow `+'.  The effect  of  `+'
              is  as if all attribute flags which precede it were given
              with a `+' prefix.  For example, `typeset -U +' is equiv-
              alent to `typeset +U' and displays the names of  all  ar-
              rays having the uniqueness attribute, whereas `typeset -f
              -U  +'  displays the names of all autoloadable functions.
              If + is the only option, then  type  information  (array,
              readonly,  etc.)  is  also printed for each parameter, in
              the same manner as `typeset +m "*"'.

       -g     The -g (global) means that any resulting  parameter  will
              not  be  restricted  to local scope.  Note that this does
              not necessarily mean that the parameter will  be  global,
              as the flag will apply to any existing parameter (even if
              unset)  from  an  enclosing function.  This flag does not
              affect the parameter after creation, hence it has no  ef-
              fect  when listing existing parameters, nor does the flag
              +g have any effect except in combination with -m (see be-
              low).

       -m     If the -m flag is given the name arguments are  taken  as
              patterns  (use quoting to prevent these from being inter-
              preted as file patterns).  With no attribute  flags,  all
              parameters  (or functions with the -f flag) with matching
              names are printed (the shell option TYPESET_SILENT is not
              used in this case).

              If the +g flag is combined with -m, a new local parameter
              is created for every matching parameter that is  not  al-
              ready local.  Otherwise -m applies all other flags or as-
              signments to the existing parameters.

              Except  when  assignments are made with name=value, using
              +m forces the matching parameters and their attributes to
              be printed, even inside a function.  Note that -m is  ig-
              nored  if no patterns are given, so `typeset -m' displays
              attributes but `typeset -a +m' does not.

       -p [ n ]
              If the -p option is  given,  parameters  and  values  are
              printed  in the form of a typeset command with an assign-
              ment, regardless of other flags and options.   Note  that
              the  -H flag on parameters is respected; no value will be
              shown for these parameters.

              -p may be followed by an optional integer argument.  Cur-
              rently only the value 1 is supported.  In this  case  ar-
              rays and associative arrays are printed with newlines be-
              tween indented elements for readability.

       -T [ scalar[=value] array[=(value ...)] [ sep ] ]
              This  flag has a different meaning when used with -f; see
              below.  Otherwise the -T option requires  zero,  two,  or
              three  arguments  to  be present.  With no arguments, the
              list of parameters created  in  this  fashion  is  shown.
              With  two  or three arguments, the first two are the name
              of a scalar and of an array  parameter  (in  that  order)
              that  will  be  tied  together in the manner of $PATH and
              $path.  The optional third argument is a single-character
              separator which will be used to join the elements of  the
              array  to form the scalar; if absent, a colon is used, as
              with $PATH.  Only the first character of the separator is
              significant;  any  remaining  characters   are   ignored.
              Multibyte characters are not yet supported.

              Only  one  of  the scalar and array parameters may be as-
              signed an initial value (the restrictions  on  assignment
              forms described above also apply).

              Both  the scalar and the array may be manipulated as nor-
              mal.  If one is unset, the other  will  automatically  be
              unset  too.   There  is  no  way of untying the variables
              without unsetting them, nor of converting the type of one
              of them with another typeset command; +T does  not  work,
              assigning an array to scalar is an error, and assigning a
              scalar to array sets it to be a single-element array.

              Note  that  both  `typeset  -xT ...'  and `export -T ...'
              work, but only the scalar  will  be  marked  for  export.
              Setting the value using the scalar version causes a split
              on all separators (which cannot be quoted).  It is possi-
              ble to apply -T to two previously tied variables but with
              a  different separator character, in which case the vari-
              ables remain  joined  as  before  but  the  separator  is
              changed.

              When an existing scalar is tied to a new array, the value
              of  the  scalar  is preserved but no attribute other than
              export will be preserved.

       Attribute flags that transform the final value (-L, -R, -Z,  -l,
       -u) are only applied to the expanded value at the point of a pa-
       rameter  expansion  expression  using `$'.  They are not applied
       when a parameter is retrieved internally by the  shell  for  any
       purpose.

       The following attribute flags may be specified:

       -A     The names refer to associative array parameters; see `Ar-
              ray Parameters' in zshparam(1).

       -L [ n ]
              Left  justify  and  remove  leading blanks from the value
              when the parameter is expanded.  If n is nonzero, it  de-
              fines the width of the field.  If n is zero, the width is
              determined by the width of the value of the first assign-
              ment.   In  the case of numeric parameters, the length of
              the complete value assigned to the parameter is  used  to
              determine the width, not the value that would be output.

              The width is the count of characters, which may be multi-
              byte  characters  if  the  MULTIBYTE option is in effect.
              Note that the screen width of the character is not  taken
              into account; if this is required, use padding with para-
              meter  expansion flags ${(ml...)...} as described in `Pa-
              rameter Expansion Flags' in zshexpn(1).

              When the parameter is expanded, it is filled on the right
              with blanks or truncated if necessary to fit  the  field.
              Note  truncation  can lead to unexpected results with nu-
              meric parameters.  Leading zeros are removed  if  the  -Z
              flag is also set.

       -R [ n ]
              Similar  to  -L, except that right justification is used;
              when the parameter is expanded, the field is left  filled
              with  blanks  or truncated from the end.  May not be com-
              bined with the -Z flag.

       -U     For arrays (but not for associative  arrays),  keep  only
              the  first occurrence of each duplicated value.  This may
              also be set for tied parameters (see -T)  or  colon-sepa-
              rated special parameters like PATH or FIGNORE, etc.  Note
              the  flag takes effect on assignment, and the type of the
              variable being assigned to is  determinative;  for  vari-
              ables  with  shared values it is therefore recommended to
              set the flag for all interfaces, e.g.  `typeset  -U  PATH
              path'.

              This  flag has a different meaning when used with -f; see
              below.

       -Z [ n ]
              Specially handled if set along with the -L flag.   Other-
              wise,  similar  to -R, except that leading zeros are used
              for padding instead of  blanks  if  the  first  non-blank
              character  is  a digit.  Numeric parameters are specially
              handled: they are always eligible for  padding  with  ze-
              roes, and the zeroes are inserted at an appropriate place
              in the output.

       -a     The  names refer to array parameters.  An array parameter
              may be created this way, but it may be assigned to in the
              typeset statement only if the reserved word form of type-
              set is enabled (as it is by default).   When  displaying,
              both normal and associative arrays are shown.

       -f     The  names refer to functions rather than parameters.  No
              assignments can be made, and the only other  valid  flags
              are -t, -T, -k, -u, -U and -z.  The flag -t turns on exe-
              cution  tracing  for  this function; the flag -T does the
              same, but turns off tracing for any named (not anonymous)
              function called from the present one, unless  that  func-
              tion  also  has  the  -t or -T flag.  The -u and -U flags
              cause the function to be marked for autoloading; -U  also
              causes alias expansion to be suppressed when the function
              is loaded.  See the description of the `autoload' builtin
              for details.

              Note  that  the builtin functions provides the same basic
              capabilities as typeset -f but gives access to a few  ex-
              tra  options;  autoload  gives further additional options
              for the case typeset -fu and typeset -fU.

       -h     Hide: only useful for special  parameters  (those  marked
              `<S>' in the table in zshparam(1)), and for local parame-
              ters  with  the  same name as a special parameter, though
              harmless for others.  A special parameter with  this  at-
              tribute  will not retain its special effect when made lo-
              cal.  Thus after `typeset -h PATH', a function containing
              `typeset PATH' will create an  ordinary  local  parameter
              without  the usual behaviour of PATH.  Alternatively, the
              local parameter may itself be given this attribute; hence
              inside a function `typeset -h PATH' creates  an  ordinary
              local parameter and the special PATH parameter is not al-
              tered  in any way.  It is also possible to create a local
              parameter using `typeset +h  special',  where  the  local
              copy  of  special  will retain its special properties re-
              gardless of having the -h attribute.  Global special  pa-
              rameters  loaded  from  shell modules (currently those in
              zsh/mapfile and zsh/parameter)  are  automatically  given
              the -h attribute to avoid name clashes.

       -H     Hide  value:  specifies that typeset will not display the
              value of the parameter when listing parameters; the  dis-
              play for such parameters is always as if the `+' flag had
              been  given.   Use  of the parameter is in other respects
              normal, and the option does not apply if the parameter is
              specified by name, or by  pattern  with  the  -m  option.
              This is on by default for the parameters in the zsh/para-
              meter  and  zsh/mapfile modules.  Note, however, that un-
              like the -h flag this is also useful for non-special  pa-
              rameters.

       -i [ n ]
              Use  an internal integer representation.  If n is nonzero
              it defines the output arithmetic base,  otherwise  it  is
              determined  by  the first assignment.  Bases from 2 to 36
              inclusive are allowed.

       -E [ n ]
              Use an internal double-precision floating point represen-
              tation.  On output the variable will be converted to sci-
              entific notation.  If n is nonzero it defines the  number
              of significant figures to display; the default is ten.

       -F [ n ]
              Use an internal double-precision floating point represen-
              tation.   On  output  the  variable  will be converted to
              fixed-point decimal notation.  If n is nonzero it defines
              the number of digits to display after the decimal  point;
              the default is ten.

       -l     Convert  the  result to lower case whenever the parameter
              is expanded.  The value is not converted when assigned.

       -r     The given names are marked readonly.  Note that  if  name
              is  a  special  parameter,  the readonly attribute can be
              turned on, but cannot then be turned off.

              If the POSIX_BUILTINS option is  set,  the  readonly  at-
              tribute  is  more  restrictive:  unset  variables  can be
              marked readonly and cannot then be set; furthermore,  the
              readonly attribute cannot be removed from any variable.

              It  is  still  possible to change other attributes of the
              variable though, some of which like -U or -Z would affect
              the value. More generally, the readonly attribute  should
              not be relied on as a security mechanism.

              Note  that  in  zsh  (like in pdksh but unlike most other
              shells) it is still possible to create a  local  variable
              of  the same name as this is considered a different vari-
              able (though this variable, too, can be marked readonly).
              Special variables that have  been  made  readonly  retain
              their value and readonly attribute when made local.

       -t     Tags  the named parameters.  Tags have no special meaning
              to the shell.  This flag has  a  different  meaning  when
              used with -f; see above.

       -u     Convert  the  result to upper case whenever the parameter
              is expanded.  The value is not converted  when  assigned.
              This  flag has a different meaning when used with -f; see
              above.

       -x     Mark for automatic export to the  environment  of  subse-
              quently  executed  commands.  If the option GLOBAL_EXPORT
              is set, this implies the option -g, unless +g is also ex-
              plicitly given; in other words the parameter is not  made
              local to the enclosing function.  This is for compatibil-
              ity with previous versions of zsh.

declare
       Same as typeset.

float [ {+|-}Hghlprtux ] [ {+|-}EFLRZ [ n ] ] [ name[=value] ... ]
       Equivalent  to  typeset  -E,  except  that options irrelevant to
       floating point numbers are not permitted.

integer [ {+|-}Hghlprtux ] [ {+|-}LRZi [ n ] ] [ name[=value] ... ]
       Equivalent  to typeset -i, except that options irrelevant to in-
       tegers are not permitted.

local [ {+|-}AHUahlprtux ] [ {+|-}EFLRZi [ n ] ] [ name[=value] ... ]
       Same as typeset, except that the options -g, and -f are not per-
       mitted.   In  this  case the -x option does not force the use of
       -g, i.e. exported variables will be local to functions.

readonly
       Same as typeset -r.  With the POSIX_BUILTINS option set, same as
       typeset -gr.
