Use tilde ~ in substitution inside neovim?

Question

In vim 8.1 (tiny), I can use ~ in a substitution, but it won't work when using neovim 0.6.0.

For example, if I have a file with the text:

one two three

And I enter vim with "vim -u NONE -N", I can do :%s/one/sub to change the text into:

sub two three

And then use :%s/two/~ to get:

sub sub three

And finally :%s/three/~ to get:

sub sub sub

However, when using neovim by "nvim -u NONE", it seems to take the same ~ as an empty string.

Is this feature deprecated or something? It's not that it's really important for me, but neovim documentation still mentions it (at least inside /magic).

Answer 1

This is a bug. Try

:set icm=
:s/one/sub
:s/two/~

And it starts working even if set icm& back later.

I would be nice if someone raise an issue on Neovim github ASAP.