feat(#2799): filesystem_watchers.ignore_dirs and git.disable_for_dirs may be functions

doc/nvim-tree-lua.txt

@@ -1170,8 +1170,9 @@ Only relevant when `git.show_on_dirs` is `true`.
 
 *nvim-tree.git.disable_for_dirs*
 Disable git integration when git top-level matches these paths.
-May be relative, evaluated via |fnamemodify| `":p"`
-  Type: `table`, Default: `{}`
+Strings may be relative, evaluated via |fnamemodify| `":p"`
+Function is passed an absolute path and returns true for disable.
+  Type: `string[] | fun(path: string): boolean`, Default: `{}`
 
 *nvim-tree.git.timeout*
 Kills the git process after some time if it takes too long.
@@ -1333,10 +1334,12 @@ Idle milliseconds between filesystem change and action.
   Type: `number`, Default: `50` (ms)
 
 *nvim-tree.filesystem_watchers.ignore_dirs*
-List of vim regex for absolute directory paths that will not be watched.
-Backslashes must be escaped e.g. `"my-project/\\.build$"`. See |string-match|.
+List of vim regex for absolute directory paths that will not be watched or
+function returning whether a path should be ignored.
+Strings must be backslash escaped e.g. `"my-proj/\\.build$"`. See |string-match|.
+Function is passed an absolute path.
 Useful when path is not in `.gitignore` or git integration is disabled.
-  Type: {string}, Default: `{}`
+  Type: `string[] | fun(path: string): boolean`, Default: `{}`
 
 ==============================================================================
  5.13 OPTS: ACTIONS                                   *nvim-tree-opts-actions*

lua/nvim-tree.lua

@@ -632,9 +632,15 @@ local ACCEPTED_TYPES = {
   update_focused_file = {
     exclude = { "function" },
   },
+  git = {
+    disable_for_dirs = { "function" },
+  },
   filters = {
     custom = { "function" },
   },
+  filesystem_watchers = {
+    ignore_dirs = { "function" },
+  },
   actions = {
     open_file = {
       window_picker = {

lua/nvim-tree/explorer/watch.lua

@@ -40,10 +40,14 @@ local function is_folder_ignored(path)
     end
   end
 
-  for _, ignore_dir in ipairs(M.config.filesystem_watchers.ignore_dirs) do
-    if vim.fn.match(path, ignore_dir) ~= -1 then
-      return true
+  if type(M.config.filesystem_watchers.ignore_dirs) == "table" then
+    for _, ignore_dir in ipairs(M.config.filesystem_watchers.ignore_dirs) do
+      if vim.fn.match(path, ignore_dir) ~= -1 then
+        return true
+      end
     end
+  elseif type(M.config.filesystem_watchers.ignore_dirs) == "function" then
+    return M.config.filesystem_watchers.ignore_dirs(path)
   end
 
   return false

lua/nvim-tree/git/init.lua

@@ -170,12 +170,18 @@ function M.get_toplevel(path)
   if not toplevel or not git_dir then
     return nil
   end
+  local toplevel_norm = vim.fn.fnamemodify(toplevel, ":p")
 
   -- ignore disabled paths
-  for _, disabled_for_dir in ipairs(M.config.git.disable_for_dirs) do
-    local toplevel_norm = vim.fn.fnamemodify(toplevel, ":p")
-    local disabled_norm = vim.fn.fnamemodify(disabled_for_dir, ":p")
-    if toplevel_norm == disabled_norm then
+  if type(M.config.git.disable_for_dirs) == "table" then
+    for _, disabled_for_dir in ipairs(M.config.git.disable_for_dirs) do
+      local disabled_norm = vim.fn.fnamemodify(disabled_for_dir, ":p")
+      if toplevel_norm == disabled_norm then
+        return nil
+      end
+    end
+  elseif type(M.config.git.disable_for_dirs) == "function" then
+    if M.config.git.disable_for_dirs(toplevel_norm) then
       return nil
     end
   end