Check if comment author has url

Solution

Thanks to shanebp answer here

<?php if( get_comment_author() == get_comment_author_link() ) 
                    comment_author_link();
                    else 
                     echo '<a href="https://wordpress.stackexchange.com/questions/314265/site.com/go?url=". get_comment_author_url() ."" target="_blank">'. get_comment_author() .'</a>' ?>

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