> # Interactive
> cat_line(interactive)
Error: dispatched!
Run `rlang::last_error()` to see where the error occurred.
Execution halted

> # Non-interactive
> cat_line(non_interactive)
Error: dispatched!
Backtrace:
    x
 1. \-global::f()
 2.   \-global::g()
 3.     \-global::h()
Execution halted

