Consider replacing default kill ring bindings with normal cut/paste commands

[Affonso-Gui]

Forking from #40631

Ideally Zed would support emacs-like killrings (#25270 and #22490).
However, I understand that making an emacs emulator is not a project goal, and the Zed team should have a bunch of tasks with higher priority.

By using a unified clipboard and standard cut/paste commands, we can provide an experience that is closer to the out-of-the-box emacs behavior (#33351) while also avoiding some pitfalls of the current killring implementation (#28715).

I think this one is harder. I personally (even in emacs) don't use the kill-ring functionality beyond a single item. This likely stems from he fact that for macOS native apps there is a single buffer which you can ctrl-k kill into / ctrl-y yank from that is distinct from the clipboard. I leverage this extensively in Zed and in other macOS apps to juggle two clipboard-like items. This is particularly useful when combined with Zed multicursors.

But I totally understand folks who (a) would prefer to have ctrl-k ctrl-w alt-w use the system clipboard and/or (b) find an incorrect/incomplete kill-ring implementation harder to use than none at all. It'd be nice to if it were easy/possible to have a Zed setting which toggled the behavior for multiple keymaps, but this would likely require additional work (e.g. a proper compatibility mode like vim/helix not just a keymap overlay).

Personally I rather try to fix the current breakage as described in #28715 and others. In the past I've tried to ensure that most default behavior is consistent independent of softwraps / window width (e.g. #25428) and I'm pretty embarrassed this behavior slipped in.