nvim

lua/autocmd.lua

@@ -0,0 +1,36 @@
+vim.api.nvim_create_autocmd({'BufEnter', 'QuitPre'}, {
+    nested = false,
+    callback = function(e)
+        local tree = require('nvim-tree.api').tree
+
+        -- Nothing to do if tree is not opened
+        if not tree.is_visible() then
+            return
+        end
+
+        -- How many focusable windows do we have? (excluding e.g. incline status window)
+        local winCount = 0
+        for _,winId in ipairs(vim.api.nvim_list_wins()) do
+            if vim.api.nvim_win_get_config(winId).focusable then
+                winCount = winCount + 1
+            end
+        end
+
+        -- We want to quit and only one window besides tree is left
+        if e.event == 'QuitPre' and winCount == 2 then
+            vim.api.nvim_cmd({cmd = 'qall'}, {})
+        end
+
+        -- :bd was probably issued an only tree window is left
+        -- Behave as if tree was closed (see `:h :bd`)
+        if e.event == 'BufEnter' and winCount == 1 then
+            -- Required to avoid "Vim:E444: Cannot close last window"
+            vim.defer_fn(function()
+                -- close nvim-tree: will go to the last buffer used before closing
+                tree.toggle({find_file = true, focus = true})
+                -- re-open nivm-tree
+                tree.toggle({find_file = true, focus = false})
+            end, 10)
+        end
+    end
+})