feat(actions): expand all under folder (#1292)

README.md

@@ -190,6 +190,9 @@ require'nvim-tree'.setup { -- BEGIN_DEFAULT_OPTS
       global = false,
       restrict_above_cwd = false,
     },
+    expand_all = {
+      max_folder_discovery = 300,
+    },
     open_file = {
       quit_on_open = false,
       resize_window = true,
@@ -261,6 +264,7 @@ require'nvim-tree'.setup { -- BEGIN_DEFAULT_OPTS
 - Double left click acts like `<CR>`
 - Double right click acts like `<C-]>`
 - `W` will collapse the whole tree
+- `E` will expand the whole tree. Be aware this might hang neovim for a while if running on a big folder (see `:help nvim-tree.actions.expand_all.max_folder_discovery`).
 - `S` will prompt the user to enter a path and then expands the tree to match the path
 - `.` will enter vim command mode with the file the cursor is on
 - `C-k` will toggle a popup with file infos about the file under the cursor
@@ -331,6 +335,7 @@ local list = {
   { key = "q",                            action = "close" },
   { key = "g?",                           action = "toggle_help" },
   { key = "W",                            action = "collapse_all" },
+  { key = "E",                            action = "expand_all" },
   { key = "S",                            action = "search_node" },
   { key = "<C-k>",                        action = "toggle_file_info" },
   { key = ".",                            action = "run_file_command" }