I would prefer Keyword("discard") to make it clearer, and avoid future disambiguation on the docs side.

Also, how do you feel about handling IParameterSymbol where the name is _ because _ => goo(); is not a discard to the compiler, but probably is to the user

I would prefer Keyword("discard") to make it clearer, and avoid future disambiguation on the docs side.

@BillWagner what do you think? I can see that we send punction for a lot of the symbols (like ?_CSharpKeyword). Would you prefer us to continue that here, os use a name like discard?

Also, how do you feel about handling IParameterSymbol where the name is _ because _ => goo(); is not a discard to the compiler, but probably is to the user

I'll think about it, but i don't feel great about it :)

We certainly do send punctuation in other scenarios, but then also have to come in here and disambiguate later (eg #47516 and #46987). Feels like this is a good opportunity to preempt that.. for example, we should probably add help for the digit separator, which is also an underscore.

k!