Suggestion for Completion/Unix/Command/_ln

[Nikolai Weibull <now@bitwi.se>]

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Hi!

Here’s a suggestion for Completion/Unix/Command/_ln.

I have, however, not been able to get _pick_variant to work for
zle/files.  Can someone please suggest a way to handle it?

[-- Attachment #2: _ln --]
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#compdef ln gln

local curcontext="$curcontext" state line ret=1
local -A opt_args

local -a args
args=(
  '-f[remove existing destination files]'
  '-s[create symbolic links instead of hard links]')

local -a opts

local variant
_pick_variant -r variant gnu=gnu zsh=zsh unix --help
case $variant in
  (gnu)
    opts=(-S)
    args=(
      '(-b --backup)-b[create a backup of each existing destination file]' \
      '(-b --backup)--backup=[create a backup of each existing destination file]::method:((
         none\:"never create backups"
         off\:"never create backups"
         numbered\:"create numbered backup"
         t\:"create numbered backup"
         existing\:"same as numbered if numbered backups exist, otherwise same as simple"
         nil\:"same as numbered if numbered backups exist, otherwise same as simple"
         simple\:"always create simple backups"
         never\:"always create simple backups"))'
      '(-d -F --directory)'{-d,-F,--directory}'[allow the superuser to attempt to hard link directories]'
      '(-f --force)'{-f,--force}'[remove existing destination files]'
      '(-i --interactive)'{-i,--interactive}'[prompt before removing destination files]'
      '(-L --logical)'{-L,--logical}'[create hard links to symbolic link references]'
      '(-n --no-dereference)'{-n,--no-dereference}'[treat destination symbolic link to a directory as if it were a normal file]'
      '(-P --physical)'{-P,--physical}'[create hard links directly to symbolic links]'
      '(-s --symbolic)'{-s,--symbolic}'[create symbolic links instead of hard links]'
      '(-S --suffix)'{-S,--suffix=}'[override default backup suffix]:suffix'
      '(-t --target-directory)'{-t,--target-directory=}'[specify directory in which to create the links]: :_directories'
      '(-T --no-target-directory)'{-T,--no-target-directory}'[treat destination as a normal file]'
      '(-v --verbose)'{-v,--verbose}'[print name of each linked file]'
      '--help[display usage information and exit]'
      '--version[display version information and exit]')
    ;;
  (zsh)
    args+=(
      '-d[attempt to hard link directories]'
      {-h,-n}'[do not dereference destination]'
        '-i[prompt before removing destination files]')
    ;;
  (*)
    case $OSTYPE in
      (darwin*)
        args+=(
          '-F[remove existing destination directories]'
          {-h,-n}'[do not dereference destination]'
          '-i[prompt before removing destination files]'
          '-v[print name of each linked file]')
        ;;
    esac
    ;;
esac

_arguments -s $opts \
  $args \
  ':link target:_files' \
  '*:: :->files' && ret=0

case $state in
  (files)
    if [[ $variant == gnu && -n ${opt_args[(I)-t|--target-directory]} ]]; then
      _wanted files expl 'link target' _files && ret=0
    else
      if (( CURRENT == 2 )); then
        local expl
        _wanted files expl 'additional link target or link name' _files && ret=0
      else
        _alternative \
          'link-targets:additional link target:_files' \
          'target-directories:target directory:_directories' && ret=0
      fi
    fi
    ;;
esac

return ret