The Matsés orthography according to hyperglot contains the accented letters ā ē ī ō ū. The source is given as Omniglot and Wikipedia, but Omniglot uses diaeresis, not macron:

as does Wikipedia. Also, both Omniglot and Wikipedia contain the digraphs {ch}, {sh}, {ts}, {an}, {en}, {ën}, {in}, {on}, {un}, while Hyperglot does not.
The Matsés orthography according to hyperglot contains the accented letters ā ē ī ō ū. The source is given as Omniglot and Wikipedia, but Omniglot uses diaeresis, not macron:
as does Wikipedia. Also, both Omniglot and Wikipedia contain the digraphs {ch}, {sh}, {ts}, {an}, {en}, {ën}, {in}, {on}, {un}, while Hyperglot does not.