Map ctrl-e to default scroll action?

[brucejxz]

Is it possible to use ctrl-e to perform the default scroll down by 1 line action? I find it annoying that the file is opened in place when my intention is to scroll down by 1 line. I therefore have this config, which disables the mapping altogether but it would be nice if I could map it to scroll:

vim.keymap.set('n', '<C-e>', '', opts('No-op'))

[gegoune]

You can use vim.keymap.del() to remove any mappings you don't want that are set up by api.config.mappings.default_on_attach().

[brucejxz]

Thanks. When/how should I set this though? If I do:

  api.config.mappings.default_on_attach(bufnr)
  vim.keymap.del('n', '<C-e>')

Then run :NvimTreeFindFile, I get this error:

Error executing Lua callback: vim/keymap.lua:0: E31: No such mapping
stack traceback:
        [C]: in function 'nvim_del_keymap'
        vim/keymap.lua: in function 'del'
        ...bruce/code/dotfiles/nvim/.config/nvim/init.lua:621: in function 'on_attach'
        ...cal/share/nvim/lazy/nvim-tree.lua/lua/nvim-tree/view.lua:94: in function 'create_buffer'
        ...cal/share/nvim/lazy/nvim-tree.lua/lua/nvim-tree/view.lua:251: in function 'open'
        ...ocal/share/nvim/lazy/nvim-tree.lua/lua/nvim-tree/lib.lua:139: in function 'open_view_and_draw'
        ...ocal/share/nvim/lazy/nvim-tree.lua/lua/nvim-tree/lib.lua:205: in function 'open'
        ...y/nvim-tree.lua/lua/nvim-tree/actions/tree/find-file.lua:51: in function 'find_file'
        ...share/nvim/lazy/nvim-tree.lua/lua/nvim-tree/commands.lua:82: in function <...share/nvim/lazy/nvim-tree.lua/lua/nvim-tree/commands.lua:81>

[alex-courtis]

See :help nvim-tree-mappings example:

  local function my_on_attach(bufnr)
    ---

    -- OR use all default mappings
    api.config.mappings.default_on_attach(bufnr)

    -- remove a default
    vim.keymap.del('n', '<C-]>', { buffer = bufnr })

    ---
  end

  require("nvim-tree").setup({
    ---
    on_attach = my_on_attach,
    ---
  })

[gegoune]

Indeed, for the record, missing bit is buffer argument: , { buffer = bufnr }) from your call to .del().

[brucejxz]

Awesome. Thanks, both. Yeah, I was missing the buffer option, which is obvious in hindsight.