I'm coming from Windows/Linux world, so don't be too harsh while answering :-)
Is it possible to develop a spelling dictionary and grammar support for unsupported languages?
Is there any documentation available? After some searching, I didn't find anything useful. Our wish is to develop language tools for macOS (speller, grammar, text-to-speech). What is the right procedure to start in the macOS world?
Regards.
If you open the Dictionary app, then File menu, and Open Dictionaries Folder, you’ll be redirected to ~/Libraries/Dictionaries. There you can add .dictionary packages to be viewed in the Dictionary app.
Next to the Dictionaries folder, you’ll find Spelling. In this one you can add .aff and .dic files to drive the spell checker.
For instance an ar.dic can contain a list of Arabic words (one word per line).
The affix file ar.aff would contain information and behaviors. It can just contain SET UTF-8, or a broader set of instructions.
I suggest you check documentation for hunspell, it should explain these shared file formats in more details.
