The straight bars over vowels are called “macrons” in English. https://en.m.wikipedia.org/wiki/Macron_(diacritic)
In Māori, there are ā, ē, ī, ō and ū.
In Māori, there are ā, ē, ī, ō and ū.
Together with the macron, pinyin (the main romanization for Chinese) would be mostly supported. https://en.wikipedia.org/wiki/Pinyin