fix: b:undo_ftplugin contain unlet(not bang) is error happen#130

tsuyoshicho wants to merge 1 commit intotyru:mastertyru/caw.vim:masterfrom

tsuyoshicho:fix/undo_ftplugin_contain_notbang_unlettsuyoshicho/caw.vim:fix/undo_ftplugin_contain_notbang_unletCopy head branch name to clipboard