[RFE] Add the ability to check for non-desirable words

[pmatulis]

This seems like an obvious one but I don't see it in the documentation. How can Sphinx be informed of non-desirable words?

[dhellmann]

What does "non-desirable" mean?

[pmatulis]

Those words which I do not want to have used. Like a blacklist (denylist?).

[dhellmann]

The PyEnchant filter API won't quite do what you want, since that only emits words that should be checked against the dictionary.

One way would be to modify the checker to understand about alternative ways to check words besides the dictionary, and then you can add the set of undesirable words via a configuration option with a filename just like we do for the custom dictionary. https://github.com/sphinx-contrib/spelling/blob/master/sphinxcontrib/spelling/checker.py#L51

On the other hand, it might make more sense to create a separate builder. One limitation of the spelling builder is that it only looks at one word at a time after passing them through the PyEnchant tokenizer. Creating your own builder would let you process the text yourself, and open up features like preventing the use of multi-word phrases (lingo, slang, etc.). https://github.com/sphinx-contrib/spelling/blob/master/sphinxcontrib/spelling/builder.py#L165

[dhellmann]

I think this is a dupe of #120 so I'm going to close it and track any future work in this area on that ticket.