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NAME

       zshzftpsys - zftp function front-end

DESCRIPTION

       This  describes  the  set  of  shell functions supplied with the source
       distribution as an interface to the zftp builtin command, allowing  you
       to  perform  FTP  operations  from  the  shell  command  line or within
       functions or scripts.  The interface is similar to  a  traditional  FTP
       client (e.g. the ftp command itself, see ftp(1)), but as it is entirely
       done within the shell all the familiar completion, editing and globbing
       features, and so on, are present, and macros are particularly simple to
       write as they are just ordinary shell functions.

       The  prerequisite  is  that  the  zftp   command,   as   described   in
       zshmodules(1)  ,  must  be available in the version of zsh installed at
       your site.  If the shell is configured to  load  new  commands  at  run
       time,  it  probably  is:  typing `zmodload zsh/zftp' will make sure (if
       that runs silently, it has worked).  If this is not  the  case,  it  is
       possible  zftp  was  linked  into  the shell anyway: to test this, type
       `which zftp' and if zftp is available you will get the  message  `zftp:
       shell built-in command'.

       Commands  given  directly with zftp builtin may be interspersed between
       the functions in this suite; in a few cases, using  zftp  directly  may
       cause  some  of  the  status  information stored in shell parameters to
       become invalid.  Note in particular the description  of  the  variables
       $ZFTP_TMOUT, $ZFTP_PREFS and $ZFTP_VERBOSE for zftp.

INSTALLATION

       You  should  make  sure  all  the  functions  from  the  Functions/Zftp
       directory of the source distribution are available; they all begin with
       the  two  letters  `zf'.   They may already have been installed on your
       system; otherwise, you will need to  find  them  and  copy  them.   The
       directory  should  appear  as  one  of the elements of the $fpath array
       (this should already be the case if they were installed), and at  least
       the  function  zfinit  should be autoloaded; it will autoload the rest.
       Finally, to initialize the use of the  system  you  need  to  call  the
       zfinit  function.   The  following code in your .zshrc will arrange for
       this; assume the functions are stored in the directory ~/myfns:

              fpath=(~/myfns $fpath)
              autoload -U zfinit
              zfinit

       Note that zfinit assumes you are using the zmodload method to load  the
       zftp  command.  If it is already built into the shell, change zfinit to
       zfinit -n.  It is helpful (though not essential) if the call to  zfinit
       appears  after  any  code to initialize the new completion system, else
       unnecessary compctl commands will be given.

FUNCTIONS

       The sequence of operations in performing a file transfer is essentially
       the  same  as that in a standard FTP client.  Note that, due to a quirk
       of the shell's getopts builtin, for those functions that handle options
       you must use `--' rather than `-' to ensure the remaining arguments are
       treated literally (a single `-' is treated as an argument).

   Opening a connection
       zfparams [ host [ user [ password ... ] ] ]
              Set  or  show  the  parameters  for  a  future  zfopen  with  no
              arguments.   If  no  arguments are given, the current parameters
              are  displayed  (the  password  will  be  shown  as  a  line  of
              asterisks).  If a host is given, and either the user or password
              is not, they will be prompted for; also, any parameter given  as
              `?'  will  be  prompted  for,  and  if  the `?' is followed by a
              string, that will be  used  as  the  prompt.   As  zfopen  calls
              zfparams  to  store  the  parameters,  this  usually need not be
              called directly.

              A single argument `-' will delete the stored  parameters.   This
              will  also cause the memory of the last directory (and so on) on
              the other host to be deleted.

       zfopen [ -1 ] [ host [ user [ password [ account ] ] ] ]
              If host is  present,  open  a  connection  to  that  host  under
              username user with password password (and, on the rare occasions
              when  it  is  necessary,  account  account).   If  a   necessary
              parameter  is  missing  or given as `?' it will be prompted for.
              If  host  is  not  present,  use  a  previously  stored  set  of
              parameters.

              If  the  command  was successful, and the terminal is compatible
              with xterm or is sun-cmd, a summary will  appear  in  the  title
              bar,   giving   the   local   host:directory   and   the  remote
              host:directory; this is  handled  by  the  function  zftp_chpwd,
              described below.

              Normally,  the  host,  user and password are internally recorded
              for later re-opening, either by a zfopen with no  arguments,  or
              automatically (see below).  With the option `-1', no information
              is stored.  Also, if an open command with arguments failed,  the
              parameters  will  not  be  retained (and any previous parameters
              will also be deleted).  A zfopen on its own,  or  a  zfopen  -1,
              never alters the stored parameters.

              Both zfopen and zfanon (but not zfparams) understand URLs of the
              form ftp://host/path... as meaning to connect to the host,  then
              change  directory  to  path  (which  must  be a directory, not a
              file).  The `ftp://' can be omitted; the trailing `/' is  enough
              to  trigger  recognition  of the path.  Note prefixes other than
              `ftp:' are not recognized, and that  all  characters  after  the
              first slash beyond host are significant in path.

       zfanon [ -1 ] host
              Open  a connection host for anonymous FTP.  The username used is
              `anonymous'.  The password (which will  be  reported  the  first
              time)  is  generated  as  user@host;  this is then stored in the
              shell parameter  $EMAIL_ADDR  which  can  alternatively  be  set
              manually to a suitable string.

   Directory management
       zfcd [ dir ]
       zfcd -
       zfcd old new
              Change  the  current  directory  on  the remote server:  this is
              implemented to have many of the features of  the  shell  builtin
              cd.

              In the first form with dir present, change to the directory dir.
              The command `zfcd ..' is treated specially, so is guaranteed  to
              work  on  non-UNIX  servers  (note this is handled internally by
              zftp).  If dir is omitted, has the effect of `zfcd ~'.

              The second form changes to the directory previously current.

              The third form attempts  to  change  the  current  directory  by
              replacing the first occurrence of the string old with the string
              new in the current directory.

              Note that in this command, and indeed anywhere a remote filename
              is  expected,  the string which on the local host corresponds to
              `~' is converted back to a `~' before being passed to the remote
              machine.   This  is  convenient  because of the way expansion is
              performed on the command line before  zfcd  receives  a  string.
              For  example,  suppose  the  command is `zfcd ~/foo'.  The shell
              will   expand   this   to   a   full   path   such   as    `zfcd
              /home/user2/pws/foo'.    At  this  stage,  zfcd  recognises  the
              initial path as corresponding to `~' and will send the directory
              to the remote host as ~/foo, so that the `~' will be expanded by
              the server to the correct remote host  directory.   Other  named
              directories of the form `~name' are not treated in this fashion.

       zfhere Change directory on the remote server to the  one  corresponding
              to  the current local directory, with special handling of `~' as
              in zfcd.   For  example,  if  the  current  local  directory  is
              ~/foo/bar,  then zfhere performs the effect of `zfcd ~/foo/bar'.

       zfdir [ -rfd ] [ - ] [ dir-options ] [ dir ]
              Produce a long directory listing.  The arguments dir-options and
              dir  are  passed  directly  to  the  server  and their effect is
              implementation dependent, but  specifying  a  particular  remote
              directory dir is usually possible.  The output is passed through
              a pager given by the environment variable $PAGER, or  `more'  if
              that is not set.

              The directory is usually cached for re-use.  In fact, two caches
              are maintained.  One is for use when there is no dir-options  or
              dir,  i.e. a full listing of the current remote directory; it is
              flushed when the current remote directory changes.  The other is
              kept  for  repeated  use  of  zfdir with the same arguments; for
              example, repeated use of `zfdir /pub/gnu' will only require  the
              directory  to  be  retrieved  on the first call.  Alternatively,
              this cache can be re-viewed with the  -r  option.   As  relative
              directories  will  confuse  zfdir,  the -f option can be used to
              force the cache to be flushed before the  directory  is  listed.
              The  option  -d  will  delete  both  caches  without  showing  a
              directory listing; it will also delete the cache of  file  names
              in the current remote directory, if any.

       zfls [ ls-options ] [ dir ]
              List  files  on the remote server.  With no arguments, this will
              produce a simple list of  file  names  for  the  current  remote
              directory.  Any arguments are passed directly to the server.  No
              pager and no caching is used.

   Status commands
       zftype [ type ]
              With no arguments, show the type  of  data  to  be  transferred,
              usually ASCII or binary.  With an argument, change the type: the
              types `A' or `ASCII' for ASCII data and `B' or `BINARY', `I'  or
              `IMAGE' for binary data are understood case-insensitively.

       zfstat [ -v ]
              Show  the  status  of the current or last connection, as well as
              the status of some of zftp's  status  variables.   With  the  -v
              option,  a  more  verbose  listing  is  produced by querying the
              server for its version of events, too.

   Retrieving files
       The commands for retrieving files all take at  least  two  options.  -G
       suppresses remote filename expansion which would otherwise be performed
       (see below for a more detailed description of that).   -t  attempts  to
       set the modification time of the local file to that of the remote file:
       this requires version 5 of perl, see the description  of  the  function
       zfrtime below for more information.

       zfget [ -Gtc ] file1 ...
              Retrieve  all  the listed files file1 ... one at a time from the
              remote server.  If a file contains  a  `/',  the  full  name  is
              passed  to  the  remote  server,  but the file is stored locally
              under the name given by the  part  after  the  final  `/'.   The
              option  -c  (cat) forces all files to be sent as a single stream
              to standard output; in this case the -t option has no effect.

       zfuget [ -Gvst ] file1 ...
              As zfget, but only retrieve  files  where  the  version  on  the
              remote server is newer (has a later modification time), or where
              the local file does not exist.  If the remote file is older  but
              the files have different sizes, or if the sizes are the same but
              the remote file is newer, the  user  will  usually  be  queried.
              With  the  option  -s, the command runs silently and will always
              retrieve the file in either of those two cases.  With the option
              -v, the command prints more information about the files while it
              is working out whether or not to transfer them.

       zfcget [ -Gt ] file1 ...
              As zfget, but if any of the local files exists, and  is  shorter
              than  the corresponding remote file, the command assumes that it
              is the result of a partially completed transfer and attempts  to
              transfer  the  rest  of  the  file.   This  is  useful on a poor
              connection which keeps failing.

              Note  that   this   requires   a   commonly   implemented,   but
              non-standard,  version of the FTP protocol, so is not guaranteed
              to work on all servers.

       zfgcp [ -Gt ] remote-file local-file
       zfgcp [ -Gt ] rfile1 ... ldir
              This retrieves files  from  the  remote  server  with  arguments
              behaving similarly to the cp command.

              In the first form, copy remote-file from the server to the local
              file local-file.

              In the second form, copy all the remote files  rfile1  ...  into
              the  local  directory  ldir  retaining the same basenames.  This
              assumes UNIX directory semantics.

   Sending files
       zfput [ -r ] file1 ...
              Send all the file1 ... given separately to  the  remote  server.
              If  a filename contains a `/', the full filename is used locally
              to find the file, but only the basename is used for  the  remote
              file name.

              With the option -r, if any of the files are directories they are
              sent recursively with all their subdirectories, including  files
              beginning  with  `.'.   This  requires  that  the remote machine
              understand UNIX file semantics, since `/' is used as a directory
              separator.

       zfuput [ -vs ] file1 ...
              As  zfput,  but only send files which are newer than their local
              equivalents, or if the remote file does not exist.  The logic is
              the  same  as  for zfuget, but reversed between local and remote
              files.

       zfcput file1 ...
              As zfput, but if any remote file already exists and  is  shorter
              than  the  local  equivalent,  assume  it  is  the  result of an
              incomplete transfer and send the rest of the file to  append  to
              the  existing  part.   As  the FTP append command is part of the
              standard set, this is in principle  more  likely  to  work  than
              zfcget.

       zfpcp local-file remote-file
       zfpcp lfile1 ... rdir
              This  sends  files  to the remote server with arguments behaving
              similarly to the cp command.

              With  two  arguments,  copy  local-file   to   the   server   as
              remote-file.

              With  more  than  two arguments, copy all the local files lfile1
              ... into the existing remote directory rdir retaining  the  same
              basenames.  This assumes UNIX directory semantics.

              A  problem  arises if you attempt to use zfpcp lfile1 rdir, i.e.
              the second form of  copying  but  with  two  arguments,  as  the
              command  has  no  simple way of knowing if rdir corresponds to a
              directory or a filename.  It attempts to resolve this in various
              ways.   First,  if the rdir argument is `.' or `..' or ends in a
              slash, it is assumed  to  be  a  directory.   Secondly,  if  the
              operation  of copying to a remote file in the first form failed,
              and the remote server sends back the expected failure  code  553
              and  a  reply  including the string `Is a directory', then zfpcp
              will retry using the second form.

   Closing the connection
       zfclose
              Close the connection.

   Session management
       zfsession [ -lvod ] [ sessname ]
              Allows you to manage multiple FTP sessions at once.  By default,
              connections  take place in a session called `default'; by giving
              the command `zfsession sessname' you can  change  to  a  new  or
              existing  session  with  a name of your choice.  The new session
              remembers its  own  connection,  as  well  as  associated  shell
              parameters,  and  also the host/user parameters set by zfparams.
              Hence you can have different  sessions  set  up  to  connect  to
              different hosts, each remembering the appropriate host, user and
              password.

              With no arguments, zfsession prints  the  name  of  the  current
              session;  with  the  option  -l  it  lists  all  sessions  which
              currently exist, and with the option -v it gives a verbose  list
              showing  the  host  and  directory  for  each session, where the
              current session is marked with an asterisk.  With  -o,  it  will
              switch to the most recent previous session.

              With -d, the given session (or else the current one) is removed;
              everything to do with it is completely forgotten.  If it was the
              only session, a new session called `default' is created and made
              current.  It is safest not to delete sessions  while  background
              commands using zftp are active.

       zftransfer sess1:file1 sess2:file2
              Transfer files between two sessions; no local copy is made.  The
              file is read from the session sess1  as  file1  and  written  to
              session  sess2 as file file2; file1 and file2 may be relative to
              the current directories of the session.  Either sess1  or  sess2
              may  be omitted (though the colon should be retained if there is
              a possibility of  a  colon  appearing  in  the  file  name)  and
              defaults to the current session; file2 may be omitted or may end
              with a slash, in which case the basename of file1 will be added.
              The sessions sess1 and sess2 must be distinct.

              The  operation  is performed using pipes, so it is required that
              the connections still be valid in a subshell, which is  not  the
              case under versions of some operating systems, presumably due to
              a system bug.

   Bookmarks
       The two functions zfmark and zfgoto allow you to `bookmark' the present
       location  (host,  user and directory) of the current FTP connection for
       later use.  The file to be used for storing and retrieving bookmarks is
       given  by  the  parameter  $ZFTP_BMFILE; if not set when one of the two
       functions is called, it will be set  to  the  file  .zfbkmarks  in  the
       directory where your zsh startup files live (usually ~).

       zfmark [ bookmark ]
              If  given an argument, mark the current host, user and directory
              under the name bookmark for later use by zfgoto.  If there is no
              connection   open,  use  the  values  for  the  last  connection
              immediately before it was closed; it is an error  if  there  was
              none.   Any  existing  bookmark  under  the  same  name  will be
              silently replaced.

              If not given an argument, list the existing  bookmarks  and  the
              points to which they refer in the form user@host:directory; this
              is the format in which they are stored,  and  the  file  may  be
              edited directly.

       zfgoto [ -n ] bookmark
              Return  to  the location given by bookmark, as previously set by
              zfmark.  If the location has user `ftp' or `anonymous', open the
              connection with zfanon, so that no password is required.  If the
              user and host parameters match  those  stored  for  the  current
              session,  if  any,  those will be used, and again no password is
              required.  Otherwise a password will be prompted for.

              With the option -n, the bookmark  is  taken  to  be  a  nickname
              stored  by  the  ncftp  program  in  its bookmark file, which is
              assumed  to   be   ~/.ncftp/bookmarks.    The   function   works
              identically  in other ways.  Note that there is no mechanism for
              adding or modifying ncftp bookmarks from the zftp functions.

   Other functions
       Mostly, these  functions  will  not  be  called  directly  (apart  from
       zfinit),  but  are  described  here  for completeness.  You may wish to
       alter zftp_chpwd and zftp_progress, in particular.

       zfinit [ -n ]
              As described above, this is used to initialize the zftp function
              system.   The  -n  option  should be used if the zftp command is
              already built into the shell.

       zfautocheck [ -dn ]
              This  function  is  called  to  implement  automatic   reopening
              behaviour,  as described in more detail below.  The options must
              appear in the first  argument;  -n  prevents  the  command  from
              changing to the old directory, while -d prevents it from setting
              the variable do_close, which it otherwise does  as  a  flag  for
              automatically closing the connection after a transfer.  The host
              and directory for the last session are stored  in  the  variable
              $zflastsession,  but  the internal host/user/password parameters
              must also be correctly set.

       zfcd_match prefix suffix
              This performs matching for completion of remote directory names.
              If  the  remote  server is UNIX, it will attempt to persuade the
              server to list the remote directory with subdirectories  marked,
              which  usually  works  but is not guaranteed.  On other hosts it
              simply calls zfget_match and hence completes all files, not just
              directories.   On  some  systems,  directories may not even look
              like filenames.

       zfget_match prefix suffix
              This performs matching for completion of remote  filenames.   It
              caches  files  for  the  current  directory  (only) in the shell
              parameter $zftp_fcache.  It is in the form to be called  by  the
              -K  option  of  compctl,  but  also  works  when  called  from a
              widget-style completion function  with  prefix  and  suffix  set
              appropriately.

       zfrglob varname
              Perform  remote  globbing,  as  describes  in more detail below.
              varname is the name of a variable containing the pattern  to  be
              expanded;  if  there were any matches, the same variable will be
              set to the expanded set of filenames on return.

       zfrtime lfile rfile [ time ]
              Set the local file lfile to have the same modification  time  as
              the  remote  file rfile, or the explicit time time in FTP format
              CCYYMMDDhhmmSS for the GMT timezone.

              Currently this requires perl version 5 to perform the conversion
              from  GMT  to local time.  This is unfortunately difficult to do
              using shell code alone.

       zftp_chpwd
              This function is called every time a connection  is  opened,  or
              closed,  or  the  remote directory changes.  This version alters
              the  title  bar  of  an  xterm-compatible  or  sun-cmd  terminal
              emulator  to  reflect the local and remote hostnames and current
              directories.  It works best  when  combined  with  the  function
              chpwd.  In particular, a function of the form

                     chpwd() {
                       if [[ -n $ZFTP_USER ]]; then
                         zftp_chpwd
                       else
                         # usual chpwd e.g put host:directory in title bar
                       fi
                     }

              fits in well.

       zftp_progress
              This  function  shows  the  status of the transfer.  It will not
              write anything  unless  the  output  is  going  to  a  terminal;
              however,  if  you  transfer  files in the background, you should
              turn off  progress  reports  by  hand  using  `zstyle  ':zftp:*'
              progress none'.  Note also that if you alter it, any output must
              be to standard error, as standard output may  be  a  file  being
              received.  The form of the progress meter, or whether it is used
              at all, can be configured  without  altering  the  function,  as
              described in the next section.

       zffcache
              This  is  used  to  implement  caching  of  files in the current
              directory  for  each  session  separately.   It   is   used   by
              zfget_match and zfrglob.

MISCELLANEOUS FEATURES

   Configuration
       Various  styles are available using the standard shell style mechanism,
       described in zshmodules(1).  Briefly,  the  command  `zstyle  ':zftp:*'
       style value ...'.  defines the style to have value value; more than one
       value may be given, although that is not useful in the cases  described
       here.   These  values  will  then  be used throughout the zftp function
       system.  For more precise control, the first argument,  which  gives  a
       context  in  which  the  style  applies,  can  be modified to include a
       particular function, as for example `:zftp:zfget': the style will  then
       have  the  given value only in the zfget function.  Values for the same
       style in different contexts may be set; the most specific function will
       be  used, where strings are held to be more specific than patterns, and
       longer patterns and shorter patterns.  Note that  only  the  top  level
       function  name,  as called by the user, is used; calling of lower level
       functions is transparent to the user.  Hence modifications to the title
       bar  in  zftp_chpwd  use  the  contexts :zftp:zfopen, :zftp:zfcd, etc.,
       depending  where  it  was  called  from.   The  following  styles   are
       understood:

       progress
              Controls the way that zftp_progress reports on the progress of a
              transfer.  If empty, unset, or `none',  no  progress  report  is
              made;  if  `bar'  a  growing  bar  of inverse video is shown; if
              `percent' (or any  other  string,  though  this  may  change  in
              future),  the  percentage of the file transferred is shown.  The
              bar meter requires that the width of the terminal  be  available
              via the $COLUMNS parameter (normally this is set automatically).
              If the size of the file being transferred is not available,  bar
              and  percent  meters  will  simply  show  the  number  of  bytes
              transferred so far.

              When zfinit is run, if this style is not defined for the context
              :zftp:*, it will be set to `bar'.

       update Specifies  the  minimum  time  interval  between  updates of the
              progress meter in seconds.  No update is made  unless  new  data
              has  been  received, so the actual time interval is limited only
              by $ZFTP_TIMEOUT.

              As described for progress, zfinit will force this to default  to
              1.

       remote-glob
              If  set  to `1', `yes' or `true', filename generation (globbing)
              is performed on the remote machine instead of by zsh itself; see
              below.

       titlebar
              If  set  to `1', `yes' or `true', zftp_chpwd will put the remote
              host  and  remote  directory  into  the  titlebar  of   terminal
              emulators such as xterm or sun-cmd that allow this.

              As  described for progress, zfinit will force this to default to
              1.

       chpwd  If set to `1' `yes' or `true', zftp_chpwd will call the function
              chpwd when a connection is closed.  This is useful if the remote
              host details were put into the terminal title bar by  zftp_chpwd
              and your usual chpwd also modifies the title bar.

              When  zfinit  is run, it will determine whether chpwd exists and
              if so it will set the default value for the style to 1  if  none
              exists already.

       Note  that  there  is also an associative array zfconfig which contains
       values used by the function system.  This should  not  be  modified  or
       overwritten.

   Remote globbing
       The  commands  for retrieving files usually perform filename generation
       (globbing) on their arguments; this can be turned off  by  passing  the
       option  -G  to  each  of  the  commands.   Normally  this  operates  by
       retrieving a complete list of files for the directory in question, then
       matching  these  locally  against  the  pattern supplied.  This has the
       advantage that the full range of zsh patterns (respecting  the  setting
       of  the  option EXTENDED_GLOB) can be used.  However, it means that the
       directory part of a filename will not be expanded  and  must  be  given
       exactly.   If  the  remote  server  does not support the UNIX directory
       semantics, directory handling is problematic and it is recommended that
       globbing  only be used within the current directory.  The list of files
       in the current  directory,  if  retrieved,  will  be  cached,  so  that
       subsequent  globs in the same directory without an intervening zfcd are
       much faster.

       If the remote-glob style  (see  above)  is  set,  globbing  is  instead
       performed  on  the  remote  host:  the  server  is  asked for a list of
       matching files.   This  is  highly  dependent  on  how  the  server  is
       implemented,  though  typically  UNIX  servers will provide support for
       basic glob patterns.  This may in some cases be faster,  as  it  avoids
       retrieving the entire list of directory contents.

   Automatic and temporary reopening
       As  described  for  the  zfopen  command,  a  subsequent zfopen with no
       parameters will reopen the connection to the last host  (this  includes
       connections made with the zfanon command).  Opened in this fashion, the
       connection starts in the default remote directory and will remain  open
       until explicitly closed.

       Automatic  re-opening  is  also  available.   If  a  connection  is not
       currently open and a command requiring a connection is given, the  last
       connection  is  implicitly  reopened.  In this case the directory which
       was current when the connection was closed again  becomes  the  current
       directory (unless, of course, the command given changes it).  Automatic
       reopening will also take place if  the  connection  was  close  by  the
       remote  server  for  whatever  reason  (e.g.  a  timeout).   It  is not
       available if the -1 option to zfopen or zfanon was used.

       Furthermore, if the command issued is a file transfer,  the  connection
       will  be  closed  after  the  transfer  is  finished, hence providing a
       one-shot mode for transfers.  This does not apply to directory changing
       or  listing  commands;  for example a zfdir may reopen a connection but
       will leave it open.  Also, automatic closure will only ever  happen  in
       the same command as automatic opening, i.e a zfdir directly followed by
       a zfget will never close the connection automatically.

       Information about the  previous  connection  is  given  by  the  zfstat
       function.  So, for example, if that reports:

              Session:        default
              Not connected.
              Last session:   ftp.bar.com:/pub/textfiles

       then  the command zfget file.txt will attempt to reopen a connection to
       ftp.bar.com, retrieve the file /pub/textfiles/file.txt, and immediately
       close  the connection again.  On the other hand, zfcd ..  will open the
       connection in the directory /pub and leave it open.

       Note that all the above is local to each session; if you  return  to  a
       previous session, the connection for that session is the one which will
       be reopened.

   Completion
       Completion  of  local  and  remote  files,  directories,  sessions  and
       bookmarks is supported.  The older, compctl-style completion is defined
       when zfinit is called; support  for  the  new  widget-based  completion
       system  is provided in the function Completion/Zsh/Command/_zftp, which
       should be installed with the other functions of the  completion  system
       and hence should automatically be available.