###-begin-{pkgname}-completion-###
if type complete &>/dev/null; then
  _{pkgname}_completion () {
    local words cword
    if type _get_comp_words_by_ref &>/dev/null; then
      _get_comp_words_by_ref -n = -n @ -w words -i cword
    else
      cword="$COMP_CWORD"
      words=("${COMP_WORDS[@]}")
    fi

    local si="$IFS"
    IFS=$'\n' COMPREPLY=($(COMP_CWORD="$cword" \
                           COMP_LINE="$COMP_LINE" \
                           COMP_POINT="$COMP_POINT" \
                           {completer} completion -- "${words[@]}" \
                           2>/dev/null)) || return $?
    IFS="$si"
  }
  complete -o default -F _{pkgname}_completion {pkgname}
fi
###-end-{pkgname}-completion-###