human
Solve the following python programming problem given the following code:
@ contextmanager 
def _render_jar_tool_args(self, options) : 
    'Format the arguments to jar-tool.

    :param Options options:
    ' 
    args = [] 
    with temporary_dir () as manifest_stage_dir : 
        classpath = relativize_classpath (self.classpath, os.path.dirname (self._path), followlinks = False) 
        def as_cli_entry(entry) : 
            src = entry.materialize (manifest_stage_dir) 
            return ('{}={}'.format (src, entry.dest) if entry.dest else src) 
files = (map (as_cli_entry, self._entries) if self._entries else []) 
        jars = (self._jars or []) 
        with safe_args (classpath, options, delimiter = ',') as classpath_args : 
            with safe_args (manifest_stage_dir, options, delimiter = ',') as files_args : 
                with safe_args (jars, options, delimiter = ',') as jars_args : 
                    if self._manifest_entry : 
                        manifest_file = self._manifest_entry.materialize (manifest_stage_dir) 
else : 
                        manifest_file = None 
if (self._main and manifest_file) : 
                        main_arg = None 
                        with open (manifest_file, 'a') as f : 
                            f.write ('Main-Class: {}
'.format (self._main)) 
else : 
                        main_arg = self._main 
if main_arg : 
                        args.append ('-main={}'.format (self._main)) 
if classpath_args : 
                        args.append ('-classpath={}'.format (','.join (classpath_args))) 
if manifest_file : 
                        args.append ('-manifest={}'.format (manifest_file)) 
if files_args : 
                        args.append ('-files={}'.format (','.join (files_args))) 
if jars_args : 
                        args.append ('-jars={}'.format (','.join (jars_args))) 
(yield args) 

    
    

    Fix the buggy line: with safe_args (manifest_stage_dir, options, delimiter = ',') as files_args :
assistant
#Here is Python code to fix the buggy line: with safe_args (manifest_stage_dir, options, delimiter = ',') as files_args :
.

with safe_args (files, options, delimiter = ',') as files_args :