How can I prevent Joomla from removing octothorpe/pound from URL post login?

Question

For example, I would like to send the following links in an email to users:

1. https://www.example.com/#foo
2. https://www.example.com/deep-link/#foo

When clicked on, I get the following results:

1. https://www.example.com/#foo
2. https://www.example.com/register/user-information?view=login#foo

Both make sense. But once I log in, #foo is dropped from each URL.

Answer 1

The # and the string after together are called a fragment. Your question seems to suggest that you expect the fragment to be preserved as you run a post request (such as logging in) but that would be unnatural. Depending on what you are hoping to achieve you may be better off using a query string in your email link, or setting a cookie when a fragment is present. Perhaps you could edit your question with details of why you want the fragment to be appended to subsequent uris?