Associates a new string value with key under group_name.
If key cannot be found then it is created.
If group_name cannot be found then it is created.
Unlike g_key_file_set_value(), this function handles characters
that need escaping, such as newlines.
Since 2.6
Associates a new string value with key under group_name. If key cannot be found then it is created. If group_name cannot be found then it is created. Unlike g_key_file_set_value(), this function handles characters that need escaping, such as newlines. Since 2.6