slight optimization

reuse the same folder array. just keep it in memory forever

nvim/.config/nvim/init.lua

@@ -358,15 +358,18 @@ do
         return vim.fn.globpath(dir, glob_pattern, false, false, false) ~= ''
     end
 
-    ---return iterator starting from cwd and going upwards until the project
-    ---root is found by looking for the .git folder.
-    ---@return fun(): string?
-    local function all_folders_till_root()
+    local all_folders_till_root = nil
+    do
         local cwd = vim.fn.getcwd()
-        local folders = {cwd}
+        local folders = {cwd} -- array of all folders from cwd to root
         for dir in vim.fs.parents(cwd) do
             table.insert(folders, dir)
         end
+
+        ---return iterator starting from cwd and going upwards until the project
+        ---root is found by looking for the .git folder.
+        ---@return fun(): string?
+        all_folders_till_root = function()
             local curr = 0
             return function()
                 curr = curr + 1
@@ -377,6 +380,7 @@ do
                 return f
             end
         end
+    end
 
     ---@param glob_pattern string
     ---@return boolean