Print warning when git state is not recognized.

lua/lib/utils.lua

@@ -1,7 +1,14 @@
 local M = {}
+local api = vim.api
 
 function M.path_to_matching_str(path)
   return path:gsub('(%-)', '(%%-)'):gsub('(%.)', '(%%.)'):gsub('(%_)', '(%%_)')
 end
 
+function M.echo_warning(msg)
+  api.nvim_command('echohl WarningMsg')
+  api.nvim_command("echom '[LuaTree] "..msg:gsub("'", "''").."'")
+  api.nvim_command('echohl None')
+end
+
 return M