Your plugin is not broken but I just wanted to mention those 2 annoying bugs that I cant seem to figure out.
Sometimes I get logs displaying the URL with the term "/undefined" at the end of them and I cant pin point where its coming from.
Why are we seeing Undefined? Where is it coming from?
When applying a redirect of an expired post, apparently we have to apply the same redirection to 2 URL strings
1st URL: http://www.domain.com/category/post-info
2nd URL: http://www.domain.com/category/post-info/
Notice the Front slash at the end of the second string, oddly enough, I started seeing reoccurring logs of posts I had already redirected in the past, only to realize that those ones did not have a front slash at the end of the string.
Is there a way for Redirection to take this "/" in consideration and automatically apply the redirect instead of having to create double redirections?