Rule: argument-always-wildcard

[anderseknert]

Encountered in the wild, but most likely quite uncommon. If all definitions of a function have a wildcard argument at the same position, that argument should just be removed.

fun(x, _) if {
    # ...
}

fun(x, _) if {
    # ...
}

I think this is most likely to happen in refactoring, where you might remove the one definition where it's actually used.