I have always used the Classical Greek keyboard of Manuel Lopez to write ancient Greek in Windows.
On the Mac however, this keyboard doesn’t work for me conerning for the diacritics. Normally, a/ would result in alfa with acute. But on my Mac, its just an alfa with a slash.
I tried som other keyboards of Keyman, but they all won’t combine the diacritics with the vowel.
Does anybody knows a solution?