Fix isWord

[akiomik]

非自立 is not POS (品詞; c[0]).

[mattn]

Could you please give me example words to lead the 非自立?

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[akiomik]

For example, the following text like this:

echo "東京が住みやすすぎるんだよな〜" | mecab -d /opt/homebrew/lib/mecab/dic/mecab-ipadic-neologd

東京    名詞,固有名詞,地域,一般,*,*,東京,トウキョウ,トーキョー
が      助詞,格助詞,一般,*,*,*,が,ガ,ガ
住み    動詞,自立,*,*,五段・マ行,連用形,住む,スミ,スミ
やす    形容詞,非自立,*,*,形容詞・アウオ段,ガル接続,やすい,ヤス,ヤス
すぎる  動詞,自立,*,*,一段,基本形,すぎる,スギル,スギル
ん      名詞,非自立,一般,*,*,*,ん,ン,ン
だ      助動詞,*,*,*,特殊・ダ,基本形,だ,ダ,ダ
よ      助詞,終助詞,*,*,*,*,よ,ヨ,ヨ
な      助詞,終助詞,*,*,*,*,な,ナ,ナ
〜      記号,一般,*,*,*,*,〜,〜,〜
EOS

[mattn]

Thank you