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           This  version  of zsh has two ways of performing completion of words on
           the command line.  New users of the shell may prefer to use  the  newer
           and more powerful system based on shell functions; this is described in
           zshcompsys(1), and the basic shell  mechanisms  which  support  it  are
           described in zshcompwid(1).  This manual entry describes the older com-
           pctl command.
           compctl [ -CDT ] options [ command ... ]
           compctl [ -CDT ] options [ -x pattern options - ... -- ] [ + options  [
           -x ... -- ] ... [+] ] [ command ... ]
           compctl -M match-specs ...
           compctl -L [ -CDTM ] [ command ... ]
           compctl + command ...
           Control the editor's completion behavior according to the supplied  set
           of options.  Various editing commands, notably expand-or-complete-word,
           usually bound to tab, will attempt to complete  a  word  typed  by  the
           user, while others, notably delete-char-or-list, usually bound to ^D in
           EMACS editing mode, list the possibilities; compctl controls what those
           possibilities  are.  They may for example be filenames (the most common
           case, and  hence  the  default),  shell  variables,  or  words  from  a
           user-specified list.


           Completion of the arguments of a command may be different for each com-
           mand or may use the default.  The behavior when completing the  command
           word  itself may also be separately specified.  These correspond to the
           following flags and arguments, all of which (except for -L) may be com-
           bined with any combination of the options described subsequently in the
           section 'Option Flags':
           command ...
                  controls completion for the named commands, which must be listed
                  last on the command line.  If completion is attempted for a com-
                  mand with a pathname containing slashes and no completion  defi-
                  nition  is  found,  the search is retried with the last pathname
                  component. If the command starts with a =, completion  is  tried
                  with the pathname of the command.
                  Any  of the command strings may be patterns of the form normally
                  used for filename generation.  These should be quoted to protect
                  them  from  immediate  expansion; for example the command string
                  'foo*' arranges for completion  of  the  words  of  any  command
                  beginning  with  foo.  When completion is attempted, all pattern
                  completions are tried in the reverse order of  their  definition
                  until one matches.  By default, completion then proceeds as nor-
                  mal, i.e. the shell will try to generate more  matches  for  the
                  specific  command on the command line; this can be overridden by
                  including -tn in the flags for the pattern completion.
                  Note that aliases are expanded before the command name is deter-
                  cific  commands.   This  is especially useful when combined with
                  extended completion (the -x flag, see the section 'Extended Com-
                  pletion'  below).  Using this flag you can define default behav-
                  ior which will apply to all commands without exception,  or  you
                  can  alter the standard behavior for all commands.  For example,
                  if your access to the user database is too slow and/or  it  con-
                  tains  too  many users (so that completion after '~' is too slow
                  to be usable), you can use
                         compctl -T -x 's[~] C[0,[^/]#]' -k friends -S/ -tn
                  to complete the strings in the array friends after a  '~'.   The
                  C[...]  argument  is necessary so that this form of ~-completion
                  is not tried after the directory name is finished.
           -L     lists the existing completion behavior in a manner suitable  for
                  putting  into  a  start-up  script; the existing behavior is not
                  changed.  Any combination of the above forms,  or  the  -M  flag
                  (which must follow the -L flag), may be specified, otherwise all
                  defined completions are listed.  Any other  flags  supplied  are
           no argument
                  If  no  argument is given, compctl lists all defined completions
                  in an abbreviated form;  with a list of options, all completions
                  with  those  flags  set  (not  counting extended completion) are
           If the + flag is alone and followed immediately by  the  command  list,
           the  completion  behavior  for all the commands in the list is reset to
           the default.  In other words,  completion  will  subsequently  use  the
           options specified by the -D flag.
           The  form  with -M as the first and only option defines global matching
           specifications (see zshcompwid). The match specifications given will be
           used  for  every  completion attempt (only when using compctl, not with
           the new completion system) and are tried in the order in which they are
           defined until one generates at least one match. E.g.:
                  compctl -M '' 'm:{a-zA-Z}={A-Za-z}'
           This  will first try completion without any global match specifications
           (the empty string) and, if that generates no  matches,  will  try  case
           insensitive completion.


           [ -fcFBdeaRGovNAIOPZEnbjrzu/12 ]
           [ -k array ] [ -g globstring ] [ -s subststring ]
           [ -K function ]
           [ -Q ] [ -P prefix ] [ -S suffix ]
           [ -W file-prefix ] [ -H num pattern ]
           -f     Filenames and file system paths.
           -/     Just file system paths.
           -c     Command names, including aliases, shell functions, builtins  and
                  reserved words.
           -F     Function names.
           -B     Names of builtin commands.
           -m     Names of external commands.
           -w     Reserved words.
           -a     Alias names.
           -R     Names of regular (non-global) aliases.
           -G     Names of global aliases.
           -d     This can be combined with -F, -B, -w, -a, -R and -G to get names
                  of disabled functions, builtins, reserved words or aliases.
           -e     This option (to show enabled commands) is in effect by  default,
                  but may be combined with -d; -de in combination with -F, -B, -w,
                  -a, -R and  -G  will  complete  names  of  functions,  builtins,
                  reserved words or aliases whether or not they are disabled.
           -o     Names of shell options (see zshoptions(1)).
           -v     Names of any variable defined in the shell.
           -N     Names of scalar (non-array) parameters.
           -A     Array names.
           -I     Names of integer variables.
           -O     Names of read-only variables.
           -p     Names of parameters used by the shell (including special parame-
           -Z     Names of shell special parameters.
           -E     Names of environment variables.
           -n     Named directories.
           -b     Key binding names.
           -k array
                  Names taken from the elements of $array (note that the '$'  does
                  not  appear  on  the command line).  Alternatively, the argument
                  array itself may be a set of space- or comma-separated values in
                  parentheses,  in which any delimiter may be escaped with a back-
                  slash; in this case the argument should be quoted.  For example,
                         compctl -k "(cputime filesize datasize stacksize
                                     coredumpsize resident descriptors)" limit
           -g globstring
                  The globstring is expanded using filename globbing; it should be
                  quoted to protect it from  immediate  expansion.  The  resulting
                  filenames  are  taken  as  the possible completions.  Use '*(/)'
                  instead of '*/' for directories.  The fignore special  parameter
                  is  not  applied  to the resulting files.  More than one pattern
                  may be given separated by blanks. (Note that brace expansion  is
                  not  part  of  globbing.   Use the syntax '(either|or)' to match
           -s subststring
                  The subststring is split into words and  these  words  are  than
                  expanded  using all shell expansion mechanisms (see zshexpn(1)).
                  The resulting words are taken as possible completions.  The fig-
                  nore  special  parameter  is not applied to the resulting files.
                  Note that -g is faster for filenames.
           -K function
                  Call the given function to get the completions.  Unless the name
                  starts with an underscore, the function is passed two arguments:
                  the prefix and the suffix of the word on which completion is  to
                  be  attempted, in other words those characters before the cursor
                  position, and those from the cursor position onwards.  The whole
                  command  line  can  be  accessed with the -c and -l flags of the
                  read builtin. The function should set the variable reply  to  an
                  array  containing  the completions (one completion per element);
                  note that reply should not be made local to the function.   From
                  such a function the command line can be accessed with the -c and
                  -l flags to the read builtin.  For example,
                         function whoson { reply=('users'); }
                         compctl -K whoson talk
                  completes only logged-on users after 'talk'.  Note that 'whoson'
                  must return an array, so 'reply='users'' would be incorrect.
           -H num pattern
                  The  possible  completions  are  taken from the last num history
                  lines.  Only words matching pattern are taken.  If num  is  zero
                  or  negative the whole history is searched and if pattern is the
                  empty string all words are taken (as with '*').  A  typical  use
                  that they are interpreted as normal characters.  This is  appro-
                  priate for filenames and ordinary strings.  However, for special
                  effects, such as inserting a backquoted expression from  a  com-
                  pletion  array (-k) so that the expression will not be evaluated
                  until the complete line is executed, this option must be used.
           -P prefix
                  The prefix is inserted just before  the  completed  string;  any
                  initial  part already typed will be completed and the whole pre-
                  fix ignored for completion purposes.  For example,
                         compctl -j -P "%" kill
                  inserts a '%' after the kill  command  and  then  completes  job
           -S suffix
                  When a completion is found the suffix is inserted after the com-
                  pleted string.  In the case of menu  completion  the  suffix  is
                  inserted  immediately, but it is still possible to cycle through
                  the list of completions by repeatedly hitting the same key.
           -W file-prefix
                  With directory file-prefix:  for command,  file,  directory  and
                  globbing completion (options -c, -f, -/, -g), the file prefix is
                  implicitly added in front of the completion.  For example,
                         compctl -/ -W ~/Mail maildirs
                  completes any subdirectories to any depth beneath the  directory
                  ~/Mail,  although  that  prefix  does  not appear on the command
                  line.  The file-prefix may also be of the form accepted  by  the
                  -k  flag,  i.e. the name of an array or a literal list in paren-
                  thesis. In this case all the directories in  the  list  will  be
                  searched for possible completions.
           -q     If used with a suffix as specified by the -S option, this causes
                  the suffix to be removed if the next character typed is a  blank
                  or  does  not  insert anything or if the suffix consists of only
                  one character and the next character typed is the  same  charac-
                  ter;  this  the same rule used for the AUTO_REMOVE_SLASH option.
                  The option is most useful for  list  separators  (comma,  colon,
           -l cmd This  option  restricts the range of command line words that are
                  considered to  be  arguments.   If  combined  with  one  of  the
                  extended  completion  patterns  'p[...]',  'r[...]', or 'R[...]'
                  (see the section  'Extended  Completion'  below)  the  range  is
                  restricted  to the range of arguments specified in the brackets.
                  Completion is then performed as if these had been given as argu-
                  ments  to the cmd supplied with the option. If the cmd string is
                  empty the first word in the range is instead taken as  the  com-
                  ments  to  the  given cmd. If cmd is the empty string, the first
                  part is completed as a command name, as with -l.
           -U     Use the whole list of possible completions, whether or not  they
                  actually  match the word on the command line.  The word typed so
                  far will be deleted.  This is most useful with a function (given
                  by  the  -K option) which can examine the word components passed
                  to it (or via the read builtin's -c and -l flags)  and  use  its
                  own criteria to decide what matches.  If there is no completion,
                  the original word is retained.  Since the produced possible com-
                  pletions  seldom  have interesting common prefixes and suffixes,
                  menu completion is started immediately if AUTO_MENU is  set  and
                  this flag is used.
           -y func-or-var
                  The  list  provided  by  func-or-var is displayed instead of the
                  list of completions whenever a listing is required;  the  actual
                  completions to be inserted are not affected.  It can be provided
                  in two ways. Firstly, if func-or-var begins with a $ it  defines
                  a  variable,  or  if it begins with a left parenthesis a literal
                  array, which contains the list.  A variable may have been set by
                  a call to a function using the -K option.  Otherwise it contains
                  the name of a function which will  be  executed  to  create  the
                  list.   The  function  will  be  passed  as an argument list all
                  matching completions, including prefixes and  suffixes  expanded
                  in  full, and should set the array reply to the result.  In both
                  cases, the display list will only be retrieved after a  complete
                  list of matches has been created.
                  Note that the returned list does not have to correspond, even in
                  length, to the original set of matches, and may be passed  as  a
                  scalar instead of an array.  No special formatting of characters
                  is performed on the output in this case; in particular, newlines
                  are  printed  literally  and if they appear output in columns is
           -X explanation
                  Print explanation when trying completion on the current  set  of
                  options.  A  '%n'  in  this  string is replaced by the number of
                  matches that were added for this explanation string.  The expla-
                  nation  only  appears  if  completion was tried and there was no
                  unique match, or when listing completions.  Explanation  strings
                  will  be listed together with the matches of the group specified
                  together with the -X option (using the -J or -V option). If  the
                  same  explanation  string  is  given to multiple -X options, the
                  string appears only once (for each  group)  and  the  number  of
                  matches  shown  for  the '%n' is the total number of all matches
                  for each of these uses. In any case, the explanation string will
                  only  be  shown  if  there  was at least one match added for the
                  explanation string.
                  The sequences  %B,  %b,  %S,  %s,  %U,  and  %u  specify  output
                  (i) With -T, or when trying a list of pattern completions,  when
                  compctl  would  usually  continue with ordinary processing after
                  finding matches; this can be suppressed with '-tn'.
                  (ii) With a list of alternatives separated by  +,  when  compctl
                  would  normally  stop  when  one  of  the alternatives generates
                  matches.  It can be forced to consider the next set  of  comple-
                  tions by adding '-t+' to the flags of the alternative before the
                  (iii) In an extended completion list (see below),  when  compctl
                  would  normally  continue  until  a set of conditions succeeded,
                  then use only the immediately following flags.  With '-t-', com-
                  pctl  will  continue  trying extended completions after the next
                  '-'; with '-tx' it will  attempt  completion  with  the  default
                  flags, in other words those before the '-x'.
           -J name
                  This  gives  the  name of the group the matches should be placed
                  in. Groups are listed and sorted separately; likewise, menu com-
                  pletion  will  offer  the  matches in the groups in the order in
                  which the groups were defined. If no group  name  is  explicitly
                  given,  the  matches  are  stored  in a group named default. The
                  first time a group name is encountered, a group with  that  name
                  is  created. After that all matches with the same group name are
                  stored in that group.
                  This can be useful with non-exclusive  alternative  completions.
                  For example, in
                         compctl -f -J files -t+ + -v -J variables foo
                  both  files  and  variables are possible completions, as the -t+
                  forces both sets of alternatives before and after the  +  to  be
                  considered  at  once.   Because  of the -J options, however, all
                  files are listed before all variables.
           -V name
                  Like -J, but matches within the group  will  not  be  sorted  in
                  listings  nor in menu completion. These unsorted groups are in a
                  different name space from the sorted ones, so groups defined  as
                  -J files and -V files are distinct.
           -1     If  given  together  with  the -V option, makes only consecutive
                  duplicates in the group be removed. Note that  groups  with  and
                  without this flag are in different name spaces.
           -2     If given together with the -J or -V option, makes all duplicates
                  be kept. Again, groups with and without this flag are in differ-
                  ent name spaces.
           point, default completion is tried.  If the list of flags contains a -t
           with  a + character, the next list of flags is used even if the current
           list produced matches.
           Additional options are available that restrict completion to some  part
           of the command line; this is referred to as 'extended completion'.


           compctl [ -CDT ] options -x pattern options - ... --
                    [ command ... ]
           compctl [ -CDT ] options [ -x pattern options - ... -- ]
                    [ + options [ -x ... -- ] ... [+] ] [ command ... ]
           The  form  with  '-x'  specifies  extended  completion for the commands
           given; as shown, it may be combined with alternative  completion  using
           '+'.  Each pattern is examined in turn; when a match is found, the cor-
           responding options, as described in the section 'Option  Flags'  above,
           are  used to generate possible completions.  If no pattern matches, the
           options given before the -x are used.
           Note that each pattern should be supplied  as  a  single  argument  and
           should be quoted to prevent expansion of metacharacters by the shell.
           A  pattern  is built of sub-patterns separated by commas; it matches if
           at least one of these sub-patterns matches  (they  are  'or'ed).  These
           sub-patterns  are  in  turn composed of other sub-patterns separated by
           white spaces which match if all of the  sub-patterns  match  (they  are
           'and'ed).  An element of the sub-patterns is of the form 'c[...][...]',
           where the pairs of brackets may be repeated as often as necessary,  and
           matches  if  any  of the sets of brackets match (an 'or').  The example
           below makes this clearer.
           The elements may be any of the following:
                  Matches if the current word on the command line starts with  one
                  of the strings given in brackets.  The string is not removed and
                  is not part of the completion.
                  Like s[string] except that the string is part of the completion.
                  Matches  if the number of the current word is between one of the
                  from and to pairs inclusive. The comma and to are  optional;  to
                  defaults  to  the  same value as from.  The numbers may be nega-
                  tive: -n refers to the n'th last word on the line.
                  Matches if the string matches the word offset by offset from the
                  Matches if the current word contains string.  Anything up to and
                  including the indexth occurrence of this string will not be con-
                  sidered part of the completion, but the rest will.  index may be
                  negative to count from the end: in most cases, index will  be  1
                  or -1.  For example,
                         compctl -s ''users'' -x 'n[1,@]' -k hosts -- talk
                  will  usually  complete  usernames, but if you insert an @ after
                  the name, names from the array hosts (assumed to  contain  host-
                  names,  though  you  must  make the array yourself) will be com-
                  pleted.  Other commands such as rcp can be handled similarly.
                  Like n except that the string  will  be  taken  as  a  character
                  class.   Anything  up to and including the indexth occurrence of
                  any of the characters in string will not be considered  part  of
                  the completion.
                  Matches  if  the  total number of words lies between min and max
                  Matches if the cursor is after a  word  with  prefix  str1.   If
                  there  is also a word with prefix str2 on the command line after
                  the one matched by str1 it matches only if the cursor is  before
                  this  word. If the comma and str2 are omitted, it matches if the
                  cursor is after a word with prefix str1.
                  Like r but using pattern matching instead.
                  Matches the word currently being completed is in  single  quotes
                  and the str begins with the letter 's', or if completion is done
                  in double quotes and str starts with the letter 'd', or if  com-
                  pletion is done in backticks and str starts with a 'b'.


                  compctl -u -x 's[+] c[-1,-f],s[-f+]' \
                    -g '~/Mail/*(:t)' - 's[-f],c[-1,-f]' -f -- mail
           This is to be interpreted as follows:
           If the current command is mail, then
                  if ((the current word begins with + and the previous word is -f)
                  or (the current word begins with -f+)), then complete the
                  non-directory part (the ':t' glob modifier) of files in the directory

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