some light refactoring

nvim/lua/etc.lua

@@ -4,22 +4,25 @@ local M = {}
 local telescope = require("telescope.builtin")
 
 -- cache directory checks for great speed
-local is_inside_work_tree = {}
-
-
-M.project_files = function()
-  local opts = {}
+local work_tree_lookup_cache = {}
 
+M.cwd_is_in_git_repo = function()
   local cwd = vim.fn.getcwd()
 
-  if is_inside_work_tree[cwd] == nil then
+  if work_tree_lookup_cache[cwd] == nil then
     -- The directory has not been checked
     vim.fn.system("git rev-parse --is-inside-work-tree")
     -- Add the result to our cache
-    is_inside_work_tree[cwd] = vim.v.shell_error == 0
+    work_tree_lookup_cache[cwd] = vim.v.shell_error == 0
   end
 
-  if is_inside_work_tree[cwd] then
+  return work_tree_lookup_cache[cwd]
+end
+
+M.project_files = function()
+  local opts = {}
+
+  if M.cwd_is_in_git_repo() then
     telescope.git_files(opts)
   else
     telescope.find_files(opts)