Function “esc_url” referenced in a past post does not need to be modified if the URL is a location away from the root of the website: “/csalaz/csalaz.html” is equivalent to “../csalaz.html”. Therefore I have changed the return URL from the blog to the first link and am no longer modifying the function in “formatting.php”.
My thanks again to the developers of WordPress.
The early riser gets through his business but not through early rising.