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Current File : //usr/share/zsh/4.3.11/functions/_cd

#compdef cd chdir pushd

# Handling of cd.
#  - Normally just completes directories.  Uses cdpath if that's set
#    and the string doesn't begin with ~, /, ./ or ../.
#  - In the second argument to cd for the form `cd old new', completes
#    possible `new' strings by examining `old' and $PWD.
#  - After - or +, _directory_stack completes numbers, but the listing
#    gives you the list of directories to complete.  This turns on
#    menu-completion and lists the possibilities automatically, otherwise
#    it's not a lot of use.  If you don't type the + or - it will
#    complete directories as normal.

_cd_options() {
  _arguments -s \
  '-q[quiet, no output or use of hooks]' \
  '-s[refuse to use paths with symlinks]' \
  '(-P)-L[retain symbolic links ignoring CHASE_LINKS]' \
  '(-L)-P[resolve symbolic links as CHASE_LINKS]'
}

setopt localoptions nonomatch

local expl ret=1 curarg
integer argstart=2 noopts

if (( CURRENT > 1 )); then
  # if not in command position, may have options.
  # Careful: -<-> is not an option.
  while [[ $words[$argstart] = -* && argstart -lt CURRENT ]]; do
    curarg=$words[$argstart]
    [[ $curarg = -<-> ]] && break
    (( argstart++ ))
    [[ $curarg = -- ]] && noopts=1 && break
  done
fi

if [[ CURRENT -eq $((argstart+1)) ]]; then
  # cd old new: look for old in $PWD and see what can replace it
  local rep
  # Get possible completions using word in position 2
  rep=(${~PWD/$words[$argstart]/*}~$PWD(-/))
  # Now remove all the common parts of $PWD and the completions from this
  rep=(${${rep#${PWD%%$words[$argstart]*}}%${PWD#*$words[$argstart]}})
  (( $#rep )) && _wanted -C replacement strings expl replacement compadd -a rep
else
  # Complete directory stack entries with ~ or when not in command position
  # (the rest of this test is optimization for the _tilde call below)
  if [[ "$PREFIX" == (#b)(\~|)[^/]# &&
      ( -n "$match[1]" || ( CURRENT -gt 1 && ! -o cdablevars ) ) ]]; then
    _directory_stack && ret=0
  fi

  if [[ $PREFIX != (\~|/|./|../)* ]]; then
    local tmpcdpath alt

    alt=()

    tmpcdpath=(${${(@)cdpath:#.}:#$PWD})

    (( $#tmpcdpath )) &&
      alt=( 'path-directories:directory in cdpath:_path_files -W tmpcdpath -/' )

    # With cdablevars, we can complete foo as if ~foo/
    if [[ -o cdablevars && -n "$PREFIX" && "$PREFIX" != <-> ]]; then
      if [[ "$PREFIX" != */* ]]; then
        alt=( "$alt[@]" 'named-directories: : _tilde' )
      else
        local oipre="$IPREFIX" opre="$PREFIX" dirpre dir

	# Note we need a tilde because cdablevars also allows user home
	# directories, hence nonomatch (above) to suppress error messages.

        dirpre="${PREFIX%%/*}/"
        IPREFIX="$IPREFIX$dirpre"
        eval "dir=( ~$dirpre )"
        PREFIX="${PREFIX#*/}"

        [[ $#dir -eq 1 && "$dir[1]" != "~$dirpre" ]] &&
          _wanted named-directories expl 'directory after cdablevar' \
	      _path_files -W dir -/ && ret=0

        PREFIX="$opre"
        IPREFIX="$oipre"
      fi
    fi
    # Don't complete local directories in command position, that's
    # already handled by _command_names (see _autocd)

    [[ CURRENT -ne 1 || ( -z "$path[(r).]" && $PREFIX != */* ) ]] &&
        alt=( "${cdpath+local-}directories:${cdpath+local }directory:_path_files -/" "$alt[@]" )

    if [[ CURRENT -eq argstart && noopts -eq 0 && $PREFIX = -* ]] &&
      zstyle -t ":completion:${curcontext}:options" complete-options; then
      alt=("$service-options:$service option:_cd_options" "$alt[@]")
    fi

    _alternative "$alt[@]" && ret=0

    return ret
  fi
  [[ CURRENT -ne 1 ]] && _wanted directories expl directory \
      _path_files -/ && ret=0

  return ret
fi

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