fix nvim: neo-tree add title

dot_config/nvim/exact_lua/exact_plugins/exact_components/barbar.lua

@@ -21,7 +21,12 @@ return {
         -- separator = {left = '', right = ''},
       },
       sidebar_filetypes = {
-        ['neo-tree'] = {event = 'BufWipeout'},
+        ['neo-tree'] = {
+          event = 'BufWipeout',
+          text = ' Explorer',
+          align = 'left',
+          -- event = 'BufWinEnter'
+        },
         undotree = {
           text = 'undotree',
           align = 'center', -- *optionally* specify an alignment (either 'left', 'center', or 'right')
@@ -46,6 +51,44 @@ return {
       -- }
       require('barbar').setup(opts)
 
+      -- 修正neo-tree的winbar開啟後，切換winbat tab會導致barbar offset跑掉的問題
+      -- <https://chatgpt.com/share/683aa9e0-6214-800f-96f9-df29d366ad2a>
+      local function neo_tree_is_visible()
+        for _, win in ipairs(vim.api.nvim_list_wins()) do
+          local buf = vim.api.nvim_win_get_buf(win)
+          if vim.bo[buf].filetype == "neo-tree" then
+            return true
+          end
+        end
+        return false
+      end
+      vim.api.nvim_create_autocmd("BufEnter", {
+        pattern = "*",
+        callback = function()
+          if vim.bo.filetype == "neo-tree" then
+            for _, win in ipairs(vim.api.nvim_list_wins()) do
+              local buf = vim.api.nvim_win_get_buf(win)
+              if vim.bo[buf].filetype == "neo-tree" then
+                local width = vim.api.nvim_win_get_width(win)
+                require("barbar.api").set_offset(width, " Explorer")
+                break
+              end
+            end
+          end
+        end,
+      })
+      vim.api.nvim_create_autocmd("BufLeave", {
+        pattern = "*",
+        callback = function()
+          -- ⚠️ 只有在「沒有任何 neo-tree 視窗」時才清除 offset
+          vim.defer_fn(function()
+            if not neo_tree_is_visible() then
+              require("barbar.api").set_offset(0)
+            end
+          end, 10)  -- 使用 defer 確保事件序列完成
+        end,
+      })
+
       -- 重定義 :q 命令為僅關閉當前 Buffer
       vim.api.nvim_create_user_command('Q', function()
         vim.cmd('BufferClose') -- 使用 barbar.nvim 的 BufferClose 呀命