From cd3b426b15ace7d35c71bdee593163e09994c76f Mon Sep 17 00:00:00 2001
From: Tom van der Lee <t0m.vd.l33@gmail.com>
Date: Thu, 10 Sep 2026 22:21:57 +0200
Subject: Swap nerdtree for neo-tree.nvim in the Neovim config

Requested: a modern, git-status-aware file explorer instead of
nerdtree (which has no built-in git integration). neo-tree.nvim shows
per-file git status (modified/staged/added/etc.) directly in the tree,
plus dedicated git-status/buffers/diagnostics panels if wanted later.

- Same auto-open-when-no-file / stdin-guard behavior as the old
  nerdtree autocmds, reimplemented for neo-tree.
- close_if_last_window = true replaces nerdtree's manual "quit when
  it's the last window" autocmd.
- Added <leader>e to toggle it, since neo-tree isn't opened by a
  memorable bare command the way :NERDTree was.

Vim's own vimrc still uses nerdtree, untouched - this only affects the
Neovim-only config.
---
 neovim/.config/nvim/lua/plugins/filetree.lua | 34 ++++++++++++++++------------
 1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/neovim/.config/nvim/lua/plugins/filetree.lua b/neovim/.config/nvim/lua/plugins/filetree.lua
index cdee9f7..2455cb1 100644
--- a/neovim/.config/nvim/lua/plugins/filetree.lua
+++ b/neovim/.config/nvim/lua/plugins/filetree.lua
@@ -1,31 +1,37 @@
 return {
-  "preservim/nerdtree",
+  "nvim-neo-tree/neo-tree.nvim",
+  branch = "v3.x",
   lazy = false,
+  dependencies = {
+    "nvim-lua/plenary.nvim",
+    "nvim-tree/nvim-web-devicons",
+    "MunifTanjim/nui.nvim",
+  },
+  keys = {
+    { "<leader>e", "<cmd>Neotree toggle<cr>", desc = "Toggle file explorer" },
+  },
   config = function()
-    -- Open NERDTree when no file is specified; quit when it's the last window
-    local augroup = vim.api.nvim_create_augroup("nerdtree_auto", { clear = true })
+    require("neo-tree").setup({
+      close_if_last_window = true,
+      filesystem = {
+        follow_current_file = { enabled = true },
+      },
+    })
 
+    -- Open neo-tree when no file is specified (mirrors the vimrc's old
+    -- NERDTree auto-open behavior), but not when nvim is reading stdin.
+    local augroup = vim.api.nvim_create_augroup("neotree_auto", { clear = true })
     vim.api.nvim_create_autocmd("StdinReadPre", {
       group = augroup,
       callback = function()
         vim.g.std_in = 1
       end,
     })
-
     vim.api.nvim_create_autocmd("VimEnter", {
       group = augroup,
       callback = function()
         if vim.fn.argc() == 0 and vim.g.std_in == nil then
-          vim.cmd("NERDTree")
-        end
-      end,
-    })
-
-    vim.api.nvim_create_autocmd("BufEnter", {
-      group = augroup,
-      callback = function()
-        if vim.fn.winnr("$") == 1 and vim.bo.filetype == "nerdtree" then
-          vim.cmd("quit")
+          vim.cmd("Neotree show")
         end
       end,
     })
-- 
cgit v1.3