BUG: When using a Class for grouping commands `--self` shows as a flag

fire/completion.py から始め、python3 example.py -- --completion を使って例を再現します。クラスメソッドがどのように補完オプションへ変換されるかを追跡し、生成された Bash 補完で bar または do-stuff に対して --self が一覧表示されなくなり、--arg1 は引き続き保持されていることを確認します。

Example code (example.py):

import fire

class Foo:
    def bar(self):
        return 'bar'

    def do_stuff(self, arg1):
        return 'stuff'

if __name__ == '__main__':
    fire.Fire(Foo)

Run:

python3 example.py -- --completion

Completion Output (take note of --self in output):

# bash completion support for example.py
# DO NOT EDIT.
# This script is autogenerated by fire/completion.py.

_complete-examplepy()
{
  local cur prev opts lastcommand
  COMPREPLY=()
  prev="${COMP_WORDS[COMP_CWORD-1]}"
  cur="${COMP_WORDS[COMP_CWORD]}"
  lastcommand=$(get_lastcommand)

  opts=""
  GLOBAL_OPTIONS=""


  case "${lastcommand}" in

    bar)

      if is_prev_global; then
        opts="${GLOBAL_OPTIONS}"
      else
        opts="--self ${GLOBAL_OPTIONS}"
      fi
      opts=$(filter_options $opts)
    ;;

    do-stuff)

      if is_prev_global; then
        opts="${GLOBAL_OPTIONS}"
      else
        opts="--arg1 --self ${GLOBAL_OPTIONS}"
      fi
      opts=$(filter_options $opts)
    ;;

    example.py)

      opts="bar do-stuff ${GLOBAL_OPTIONS}"
      opts=$(filter_options $opts)
    ;;
  esac

  COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
  return 0
}

get_lastcommand()
{
  local lastcommand i

  lastcommand=
  for ((i=0; i < ${#COMP_WORDS[@]}; ++i)); do
    if [[ ${COMP_WORDS[i]} != -* ]] && [[ -n ${COMP_WORDS[i]} ]] && [[
      ${COMP_WORDS[i]} != $cur ]]; then
      lastcommand=${COMP_WORDS[i]}
    fi
  done

  echo $lastcommand
}

filter_options()
{
  local opts
  opts=""
  for opt in "$@"
  do
    if ! option_already_entered $opt; then
      opts="$opts $opt"
    fi
  done

  echo $opts
}

option_already_entered()
{
  local opt
  for opt in ${COMP_WORDS[@]:0:COMP_CWORD}
  do
    if [ $1 == $opt ]; then
      return 0
    fi
  done
  return 1
}

is_prev_global()
{
  local opt
  for opt in $GLOBAL_OPTIONS
  do
    if [ $opt == $prev ]; then
      return 0
    fi
  done
  return 1
}

complete -F _complete-examplepy example.py