SearchValues<string>, IndexOfAny returns matched value?

[MihailsKuzmins]

It's very common to perform replacements in a template — for example, "{Title} was published by {Author} in {Year} / {Place}", where the values inside {} need to be replaced with actual data.
I tried implementing this using SearchValues<string>, but ran into an issue: IndexOfAny doesn't indicate which exact value was matched.
I'm wondering — is it possible to achieve this using SearchValues<string> without implementing custom logic to determine which value was matched?

var searchValues = SearchValues.Create(["{Title}", "{Author}", "{Year}", "{Place}"]);
const string input = "{Title} was published by {Author} in {Year} / {Place}";
var index = input.IndexOfAny(searchValues); // what is matched?

[stephentoub]

You can use Regex, which layers on top of SearchValues and adds that ability. SearchValues itself doesn't expose that because it bakes in policy about matching behavior.
#110670 (comment)