Is there a way to replace clipboard contents instead of adding to it?

[Tudmotu]

NvimTree has the feature where you can add multiple files to your "clipboard" then paste them all at once.
While this is a cool feature, it sometimes gets in my way since I press "c" or "x" on some file by accident, then I copy/cut the actual file I wanted, but when I paste it it pastes both files.

Is there a way to configure NvimTree to replace the contents of the clipboard on every c/x press?
Or alternatively, is there a way to clear the clipboard?

Thanks

[alex-courtis]

The clipboard is additive, without an option to replace.

You can clear the clipboard :help nvim-tree-api.fs.clear_clipboard()

Create a function:

local function clear_and_copy()
  api.fs.clear_clipboard()
  api.fs.copy.node()
end

Map it in your on_attach:

vim.keymap.set('n', 'c',     clear_and_copy,                      opts('Clear And Copy'))

[alex-courtis]

Mappings using the "standard" on_attach opts :help nvim-tree-mappings only apply inside the nvim-tree buffer.

You can apply them everywhere by removing bufnr however I don't recommend it. I don't think I'm understanding your use case...

[Tudmotu]

Thanks! It works 😃
Regarding buffer - thanks, I understand it now. I only want it inside NvimTree.
This is the on_attach function I used:

on_attach = function (bufnr)
    local api = require "nvim-tree.api"

    local function opts(desc)
      return { desc = "nvim-tree: " .. desc, buffer = bufnr, noremap = true, silent = true, nowait = true }
    end

    -- default mappings
    api.config.mappings.default_on_attach(bufnr)
    local function clear_and_copy()
        api.fs.clear_clipboard()
        api.fs.copy.node()
    end

    local function clear_and_cut()
        api.fs.clear_clipboard()
        api.fs.cut()
    end

    vim.keymap.set('n', 'c', clear_and_copy, opts('Clear And Copy'))
    vim.keymap.set('n', 'x', clear_and_cut, opts('Clear And Cut'))
end,

[alex-courtis]

That's great.

I'd be most grateful if you documented your Recipe

[Tudmotu]

Added:
https://github.com/nvim-tree/nvim-tree.lua/wiki/Recipes#clear-clipboard-before-every-copy--cut-operation

[alex-courtis]

Many thanks!