Matching a surround when adjecent to it, not only when inside it

[rotmh]

I think it would be very useful if when I do mi(, and I'm not inside a parenthesis set, it would select a set further in the line (if exists), or even in the document (to match f and t behavior). For example, for the line:

fn foo_bar_baz(arg_a: &str, arg_b: usize)
//  ^
//  cursor here

When hitting mi(, the arg_a: &str, arg_b: usize will get selected.