Bug with unusedArguments rule

[mnazirov]

Hi. I have noticed in my project that the function argument is replaced by the _ symbol even though the parameter is used in the function. After that, an error appears Cannot find 'filter' in scope

The problem goes away if you add the displayable parameter isFilter(with: ...) to the passed function.

Tested it on a version 0.53.0

func convert(
-   filter: Filter,
+  filter _: Filter,
    accounts: [Account],
    total: MulticurrencyTotal?,
    outgoingTotal: MulticurrencyTotal?
) -> History? {
    guard
        let firstParameter = incomingTotal?.currency,
        let secondParameter = outgoingTotal?.currency,
        isFilter(filter, accounts: accounts)
    else {
        return nil
    }
    return History(firstParameter, secondParameter)
}

func isFilter(_ filter: Filter, accounts: [Account]) -> Bool {
    ...
}

[nicklockwood]

@mnazirov fixed in 0.53.1