How to use OSC 52 clipboard for copy only?

[doums]

Problem

With terminals I use (wezterm/alacritty) the new osc52 clipboard feature works as expected for copy but not for paste operation.
For instance wezterm does not seem to allow reading the clipboard wez/wezterm/issues/2050

When I try to paste eg pressing p nvim become unresponsive, freeze during ~10seconds with the following message "Waiting for OSC 52 response from the terminal. Press Ctrl-C to interrupt…".
Finally, after this 10s timeouts or pressing ctrlC, the previously yanked text is pasted.

There is a way to set g.clipboard to enable osc52 for copy only, and keep whatever is nvim's default for paste?

I tried this but it's not working, I lose the osc52 feature

-- this is not working
vim.g.clipboard = {
  name = 'OSC 52',
  copy = {
    ['+'] = require('vim.ui.clipboard.osc52').copy('+'),
    ['*'] = require('vim.ui.clipboard.osc52').copy('*'),
  },
  paste = nil -- do not override it, use nvim's default
}

Steps to reproduce

1. start nvim with nvim --clean -u mini.lua

vim.o.clipboard = 'unnamedplus'

vim.g.clipboard = {
  name = 'OSC 52',
  copy = {
    ['+'] = require('vim.ui.clipboard.osc52').copy('+'),
    ['*'] = require('vim.ui.clipboard.osc52').copy('*'),
  },
  paste = {
    ['+'] = require('vim.ui.clipboard.osc52').paste('+'),
    ['*'] = require('vim.ui.clipboard.osc52').paste('*'),
  },
}

2. yank some text eg. y then paste p

Expected behavior

Should past the yanked text instant and do not freeze 10s with "Waiting for OSC 52 response from the terminal. Press Ctrl-C to interrupt..." message

Neovim version (nvim -v)

NVIM v0.10.0-dev-2682+g011585f35f RelWithDebInfo LuaJIT 2.1.1702233742

Vim (not Nvim) behaves the same?

Operating system/version

archlinux 6.8.1-arch1-1

Terminal name/version

• wezterm 20240203-110809-5046fc22
• alacritty 0.13.1 (fe2a3c56)

Installation

aur neovim-git

[tristone13th]

I also encountered this problem with Windows Terminal.

[tgbrooks]

The example in my recent issue might help you (by completing disabling pasting to + and *): #28611
It also resolves a related problem in Windows Terminal (and possibly others, I haven't checked) where yanking is slow when using the folke/which-key.nvim plugin.

[fcying]

There are still issues with using the no_paste function in windows terminal.
when I paste, it returns clipboard: provider returned invalid data
test config

local g, fn = vim.g, vim.fn
g.mapleader = " "
g.mapleader = " "
g.config_dir = fn.fnamemodify(fn.resolve(fn.expand("<sfile>:p")), ":h")
g.runtime_dir = g.config_dir .. "/.repro"
for _, name in ipairs({ "config", "data", "state", "cache" }) do
    vim.env[("XDG_%s_HOME"):format(name:upper())] = g.runtime_dir .. "/" .. name
end

local lazypath = g.runtime_dir .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
    vim.fn.system({ "git", "clone", "--filter=blob:none", "--single-branch",
        "https://github.com/folke/lazy.nvim.git", lazypath })
end

vim.opt.runtimepath:prepend(lazypath)
local plugins = {
    "folke/tokyonight.nvim",
}

require("lazy").setup(plugins, {
    root = g.runtime_dir .. "/plugins",
})
vim.cmd.colorscheme("tokyonight")

vim.opt.clipboard = "unnamedplus"
function no_paste(reg)
    return function(lines)
        -- Do nothing! We can't paste with OSC52
    end
end

vim.g.clipboard = {
    name = "OSC 52",
    copy = {
         ["+"] = require("vim.ui.clipboard.osc52").copy("+"),
         ["*"] = require("vim.ui.clipboard.osc52").copy("*"),
    },
    paste = {
        ["+"] = no_paste("+"), -- Pasting disabled
        ["*"] = no_paste("*"), -- Pasting disabled
    }
}

[rockneverdies55]

Not sure if disabling the pasting will effect my workflow or not but this seems to fix the problem. Thank you.

[tgbrooks]

@fcying Perhaps that's due to the -- Do nothing! We can't paste with OSC52 line since that function would normally return the value to paste. I haven't tried it but you could try returning a empty string or something there instead.

@rockneverdies55 FYI you can paste from the Windows clipboard with ctrl+shift+v even after disabling paste in vim.g.clipboard.

[ch3n9w]

try this:

vim.api.nvim_create_autocmd('TextYankPost', {
    callback = function()
        vim.highlight.on_yank()
        local copy_to_unnamedplus = require('vim.ui.clipboard.osc52').copy('+')
        copy_to_unnamedplus(vim.v.event.regcontents)
        local copy_to_unnamed = require('vim.ui.clipboard.osc52').copy('*')
        copy_to_unnamed(vim.v.event.regcontents)
    end
})

while keeping your vim.o.clipboard as same as before, so I can still paste contents from system clipboard using p if there is no ssh envolved.