关于nvim-tree的简单设置

前言

最近临近开学，为了方便在课堂上随手写一点作业，我开始对neovim进行配置，尽量让它满足一个类Ide的功能，那么必不可少的就是文件树的功能，那么这里，我就来简单记录一下nvim-tree的配置过程。这里我们使用packer插件管理器，对插件进行安装。

需求

neovim >=0.8.0

nvim-web-devicons is optional and used to display file icons. It requires a patched font. Your terminal emulator must be configured to use that font, usually "Hack Nerd Font"

安装nvim-tree

return require('packer').startup(function()
    -- Packer can manage itself
    use 'wbthomason/packer.nvim'
    -- gruvbox theme
    use {
        "ellisonleao/gruvbox.nvim",
        requires = {"rktjmp/lush.nvim"}
    }
    -- nvim-tree (这个就是插件)
    use {
        'kyazdani42/nvim-tree.lua',
        requires = 'kyazdani42/nvim-web-devicons'
    }
end)

考虑到大家都应该会使用packer了，将上述代码写入plugins.lua即可
在init.lua里写入

-- disable netrw at the very start of your init.lua
vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

-- set termguicolors to enable highlight groups
vim.opt.termguicolors = true

-- empty setup using defaults
require("nvim-tree").setup()

-- OR setup with some options
require("nvim-tree").setup({
  sort_by = "case_sensitive",
  view = {
    width = 30,
  },
  renderer = {
    group_empty = true,
  },
  filters = {
    dotfiles = true,
  },
})

创建 lua/plugin-config/nvim-tree.lua 文件，在里面写入

local function my_on_attach(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)

  -- custom mappings
  vim.keymap.set('n', '<C-t>', api.tree.change_root_to_parent,        opts('Up'))
  vim.keymap.set('n', '?',     api.tree.toggle_help,                  opts('Help'))
end

-- pass to setup along with your other options
require("nvim-tree").setup {
  ---
  on_attach = my_on_attach,
  ---
}
自此，我们就已经安装完成了，只需要在nvim里面输入:TreeToggle即可打开文件树。接下来我们开始配置快捷键
**在/lua/keybindings.lua 写入**

-- nvimTree
map('n', '', ':NvimTreeToggle', opt)

这样就可以使用Alt+M来打开，Atl+hjkl来切换了。