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#compdef augtool

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

_arguments -C -s \
  '(-c --typecheck)'{-c,--typecheck}'[perform type checking on lenses]' \
  '(-b --backup)'{-b,--backup}'[preserve original files with .augsave extension]' \
  '(-n --new)'{-n,--new}'[leave files untouched but save changes with a .augnew extension]' \
  '(-r --root)'{-r,--root=}'[specify filesystem root]:root directory:_files -/' \
  \*{-I+,--include=}'[add directory containing lenses to search path]:directory:_files -/' \
  '(-f --file *)'{-f+,--file=}'[read commands from specified file]:file:_files' \
  '(-i --interactive)'{-i,--interactive}'[read commands from the terminal]' \
  '(-e --echo)'{-e,--echo}'[echo commands read from a file or stdin]' \
  '(-s --autosave)'{-s,--autosave}'[automatically save at the end of instructions]' \
  '(-S --nostdinc)'{-S,--nostdinc}'[do not search the builtin default directories for modules]' \
  '(-L --noload)'{-L,--noload}'[do not load any files into the tree on startup]' \
  '(-A --noautoload)'{-A,--noautoload}'[do not autoload modules from the search path]' \
  '--span[load span positions for nodes related to a file]' \
  '(- *)--version[print version information]' \
  '(-)'{-h,--help}'[print help information]' \
  '*:: :->subcommands' && ret=0

[[ -z $state ]] && return ret

if [[ CURRENT -eq 1 || $words[1] == help ]]; then
  local -a subcmds
  subcmds=( ${${${(f)"$(_call_program subcommands augtool help 2>/dev/null)"}[2,-2]## #}// #- /:} )
  _describe -t subcommands "augtool command" subcmds && ret=0
  return ret
fi

_tags paths
while _tags; do
  if _requested paths; then
    local subcmd="$words[1]"
    curcontext="${curcontext%:*}-${subcmd}:"
    if compset -P '/files/'; then
      _all_labels paths expl path _path_files -W / && ret=0
    elif compset -P '/augeas/'; then
      compset -P '*/'
      local files
      files=( ${${(f)"$(_call_program path augtool ls ${words[CURRENT]%/*} 2>/dev/null)"}% = *} )
      while _next_label paths expl path; do
	compadd "$expl[@]" -- ${files:#*/} && ret=0
	compadd "$expl[@]" -S '' -- ${(M)files:#*/} && ret=0
      done
    else
      local -a suf
      suf=(-S '')
      compset -S '/*' || suf=( -S / )
      _all_labels paths expl path compadd -P/ "$suf[@]" files augeas && ret=0
    fi
  fi
  (( ret )) || break
done

return ret