Patch windows (#222)

lua/nvim-tree/utils.lua

@@ -11,4 +11,26 @@ function M.echo_warning(msg)
   api.nvim_command('echohl None')
 end
 
+local path_separator = package.config:sub(1,1)
+function M.path_join(paths)
+  return table.concat(paths, path_separator)
+end
+
+function M.path_split(path)
+  return path:gmatch('[^'..path_separator..']+'..path_separator..'?')
+end
+
+function M.path_add_trailing(path)
+  if path:sub(-1) == path_separator then
+    return path
+  end
+
+  return path..path_separator
+end
+
+function M.path_remove_trailing(path)
+  return path:gsub(path_separator..'$', '')
+end
+
+M.path_separator = path_separator
 return M