By @frightful_hobgoblin@lemmy.ml
Fada = AltGr+vowel áéíóú
ponc séimhithe = AltGr+h, then consonant ṫḃḞ srl.
en-dash = hyphen+AltGr
em-dash = hyphen+shift+AltGr
umlaut = AltGr+8, then vowel
æ = AltGr+
'œ = AltGr+
qþ = AltGr+
tð = AltGr+
dSo many class little tricks in the Irish keyboard layout.
Thanks. I should check again what the problem was (I thought we tried that).