Lecture d'un texte en français avec les caractères accentués «àéèäöüç».... Ils sont tous codés sur 8 bit est sont simplement ignorés.
Reading of a text in French with the accented characters "àéèäöüç" .... They are all coded on 8 bit and are simply ignored.
I just understood you are speaking about Text to speak (TTS) engine. TTS has nothing to deal with MacroDroid. MD uses TTS engine
you defined on your device, according to your system default language.
So, maybe the one you are using doesn't correctly decode some characters. On my side, I use standard Google one and it works fine. As an example, the text
"Ça c'est précis !" sounds nice.
These engines are mainly based on word dictionaries and correctly speak words they recognize. They generally 'convert' these 'special' characters to 'standard' ones to even correctly speak some misspelled words. In my previous example,
"Ca c'est precis !" gives the same correct spelling, despite misspelling.