I am developing a wordpress theme which will be sold out to users on some marketplace. I was finding a way to edit Wordpress widget.
And I found that and from here all the code is available in /wp-includes/default-widgets.php
If I only wanted to change the title then I will have surely passed a parameter in register_sidebar() before_title options but the problem is I don't want to only change the title but add images to the recent post (Without Plugin) which requires the modification of the code.
Now my question is 'What can be the downsides of editing the wordpress widget files directly?' Will the wordpress update overwrite it or the buyers of the theme will be safe?
