Straightforward example of inlining for the docs?

[dburgener]

I'm looking at writing docs for the #[inline] attribute, since that's an omission in the docs right now (working to check off the list in #1019 (comment)). I haven't yet been able to think of a good motivating example though. My go-to example is highly domain specific, and the examples in lrgrammar.lalrpop and lalrpop-test are awfully similar to ?, which makes me not like them as a motivating example. Ideally I'd like something like:

You have this grammar:

grammar;

Rule = {
    ConflictingPrefix "foo" "bar" "baz",
    "one_prefix" "foo" "bar" "qux"
};

ConflictingPrefix = {
    "one_prefix",
    "two_prefix"
}

Where ConflictingPrefix basically exists to reduce code duplication, but causes a SR conflict as written, which can be fixed by inlining. But ideally I'd like something at least a little real-world-y, without being too domain specific. Any suggestions?

(Bonus points if lalrpop suggests inlining for the produced conflict, which is does not for the above example. Maybe it should though. I haven't dug in to understand the try_classify_inline_example in detail. Based on a skim of the comments, it seems like the above is in scope for something it should be able to suggest inlining on. But that's a separate issue than writing the docs.)