Request: "Compressed"

[Lokathor]

Just how fn_args_layout works for function declarations, but make it work for function calls as well.

eg:

use super::*;

pub fn create_window_ex_w() {
  CreateWindowExW(dwExStyle, lpClassName, lpWindowName, dwStyle, X, Y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)
}

should become (depending on line with and such) something like this:

use super::*;

pub fn create_window_ex_w() {
  CreateWindowExW(dwExStyle, lpClassName, lpWindowName,
    dwStyle, X, Y, nWidth, nHeight, hWndParent, hMenu,
    hInstance, lpParam)
}

instead of going to a completely vertical layout.

[calebcartwright]

This is technically a duplicate of #4146, however, that issue had a subtly massive scope since it covered both chains and calls (similar to #4306) and I was thinking about extracting a new issue focused on the call args piece.

Is your interest strictly in a compressed-like variant on calls, or would it be alright with you if we broaden this a tad to discuss the feasibility of a new option to cover call layout/style (naming will be fun given the unfortunate name of the existing option that actually controls params in fn items, not args in calls), with Compressed being a potential variant?

I suspect some of the original challenges (#2010) that prevented a compressed variant in the first place are still prevalent, but I wonder if some form of a preserve-variant similar to what we're targeting for chains could be possible as a middle ground.

[Lokathor]

Uh, however you want it.

I just have these occasional FFI calls which have to match a particular many-args signature and rustfmt makes them take up half a page of space.

I have no opinions on if chains should be in scope or how they should work if they are. I just need normal function calls to work. That's the only time I'm stuck with this many args instead of combining them into an array or a args-struct or a builder or something else like that.