add view.indent_markers (#1134)

lua/nvim-tree/renderer/init.lua

@@ -256,7 +256,7 @@ function M.draw()
   hl = {}
 
   icon_state = _icons.get_config()
-  local show_arrows = vim.g.nvim_tree_indent_markers ~= 1
+  local show_arrows = not M.config.indent_markers.enable
     and icon_state.show_folder_icon
     and icon_state.show_folder_arrows
   _padding.reload_padding_function()
@@ -289,4 +289,12 @@ function M.render_hl(bufnr)
   end
 end
 
+function M.setup(opts)
+  M.config = {
+    indent_markers = opts.renderer.indent_markers,
+  }
+
+  require("nvim-tree.renderer.padding").setup(opts)
+end
+
 return M