From 53c8eb3ef1f44206bcbcde2f5e2820f68b627307 Mon Sep 17 00:00:00 2001
From: eug-vs <eugene@eug-vs.xyz>
Date: Sun, 5 Feb 2023 14:27:52 +0300
Subject: feat(nvim): custom open_on_startup callback

---
 nvim/.config/nvim/lua/filetree.lua | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/nvim/.config/nvim/lua/filetree.lua b/nvim/.config/nvim/lua/filetree.lua
index 761aca6..0760163 100644
--- a/nvim/.config/nvim/lua/filetree.lua
+++ b/nvim/.config/nvim/lua/filetree.lua
@@ -1,9 +1,10 @@
 local tree_cb = require'nvim-tree.config'.nvim_tree_callback
 
+
 require'nvim-tree'.setup {
-  open_on_setup = true,
   hijack_cursor = true,
   view = {
+    width = 30,
     mappings = {
       list = {
         { key = "l", cb = tree_cb("edit") },
@@ -15,5 +16,27 @@ require'nvim-tree'.setup {
   }
 }
 
+local function open_on_startup(data)
+
+  -- buffer is a [No Name]
+  local no_name = data.file == "" and vim.bo[data.buf].buftype == ""
+
+  -- buffer is a directory
+  local directory = vim.fn.isdirectory(data.file) == 1
+
+  if not no_name and not directory then
+    return
+  end
+
+  -- change to the directory
+  if directory then
+    vim.cmd.cd(data.file)
+  end
+
+  -- open the tree
+  require("nvim-tree.api").tree.open()
+end
+
 vim.api.nvim_set_keymap('n', '<F3>', ':NvimTreeToggle<CR>', { noremap = true, silent = true })
 vim.api.nvim_command('autocmd BufEnter * ++nested if winnr("$") == 1 && bufname() == "NvimTree_" . tabpagenr() | quit | endif')
+vim.api.nvim_create_autocmd({ "VimEnter" }, { callback = open_on_startup })
-- 
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