ほしいもの sourc: aaaaaaabbbbbxxxxxxdddddeeezzzzzfffffffffxxxxxxxxx rule: /[x|z]+/ result: ['aaaaaaabbbbb', 'xxxxxx', 'dddddeee', 'zzzzz', 'fffffffffggggg', 'xxxxxxxxx'] こんな感じ。splitだと、'xxxxxx'とか'zzzzz'は要素としては消えちゃうけ…